/* ══════════════════════════════════════════
   DESIGN SYSTEM — CK Labs Lab v2
   Dark immersive, accent #6c63ff
══════════════════════════════════════════ */
:root {
  --bg: #0a0c12;
  --bg2: #0f1118;
  --surface: #161923;
  --surface2: #1e2433;
  --surface3: #252d40;
  --accent: #6c63ff;
  --accent2: #8b85ff;
  --accent-glow: rgba(108,99,255,0.35);
  --success: #34d399;
  --warning: #f59e0b;
  --danger: #ef4444;
  --text: #f1f5f9;
  --muted: #64748b;
  --muted2: #94a3b8;
  --border: rgba(255,255,255,0.08);
  --border2: rgba(255,255,255,0.12);
  --gold: #ffd700;
  /* Editor syntax highlighting (override v1 orange theme → v2 purple theme) */
  --editor-bg: #0d1117;
  --editor-fg: #c9d1d9;
  --editor-kw: #c4b5fd;
  --editor-str: #a6e3a1;
  --editor-num: #fab387;
  --editor-fn: #89b4fa;
  --editor-comment: #6b7280;
  --editor-op: #f38ba8;
  --editor-star: #ffd700;
  --editor-table: #f59e0b;
  --sidebar-w: 260px;
  --sidebar-collapsed: 60px;
  --topbar-h: 60px;
  --nav-h: 56px;
  --transition: 0.22s ease;
  --radius: 12px;
  --radius-sm: 8px;
}
[data-theme="light"],body.light-mode {
  --bg: #f8fafc;
  --bg2: #f1f5f9;
  --surface: #ffffff;
  --surface2: #f1f5f9;
  --surface3: #e2e8f0;
  --border: rgba(0,0,0,0.08);
  --border2: rgba(0,0,0,0.12);
  --text: #0f172a;
  --muted: #64748b;
  --muted2: #475569;
}

*,*::before,*::after{box-sizing:border-box;margin:0;padding:0}
html,body{height:100%;overflow:hidden}
body{
  font-family:'Inter',system-ui,-apple-system,sans-serif;
  background:var(--bg);
  color:var(--text);
  font-size:14px;
  line-height:1.5;
  /* Override v1 body flex that breaks v2 layout */
  display:block;
  min-height:auto;
  flex-direction:unset;
}

/* ── Scrollbars ── */
::-webkit-scrollbar{width:5px;height:5px}
::-webkit-scrollbar-track{background:transparent}
::-webkit-scrollbar-thumb{background:var(--surface3);border-radius:4px}

/* ══════════════════════════════════════════
   MODALS & OVERLAYS
   Rule: display:none = hidden + no events.
   NEVER use pointer-events:none on modals.
══════════════════════════════════════════ */
/* Default modal is HIDDEN — only visible via inline style or .active class */
.modal{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,0.85);
  align-items:center;justify-content:center;
  z-index:9999;padding:20px;
  backdrop-filter:blur(4px);
}
.modal-box{
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:20px;
  padding:32px 28px;
  max-width:440px;width:100%;
  text-align:center;
  box-shadow:0 0 60px rgba(108,99,255,0.2);
  position:relative;
}
.modal-box h2{font-size:22px;font-weight:800;margin-bottom:8px;color:var(--text)}
.modal-box p{color:var(--muted2);font-size:14px;margin-bottom:20px;line-height:1.6}

.streak-banner{
  position:fixed;top:0;left:0;right:0;
  background:linear-gradient(90deg,#f59e0b,#ef4444);
  color:#fff;text-align:center;font-weight:700;font-size:14px;
  padding:10px;z-index:9998;
  transform:translateY(-100%);
  transition:transform .4s ease;
}
.streak-banner.visible,.streak-banner.show{transform:translateY(0);display:block}

/* ── Tour ── */
/* Override v1 scroll-lock that breaks v2 flex layout */
html.is-tour-open body{
  position:static!important;
  top:auto!important;left:auto!important;right:auto!important;
  width:auto!important;
  overflow:hidden!important;
}
.tour-overlay{
  position:fixed!important;inset:0!important;z-index:8000!important;
  pointer-events:none;display:none;
}
.tour-overlay.active{display:block!important;pointer-events:auto!important}
.tour-backdrop{position:absolute;inset:0;background:rgba(0,0,0,0.72);pointer-events:all;cursor:pointer}
.tour-spotlight{
  position:absolute;
  border-radius:var(--radius);
  box-shadow:0 0 0 9999px rgba(0,0,0,0.72);
  pointer-events:none;z-index:1;
  transition:all .35s ease;
}
.tour-spotlight-ring{
  position:absolute;
  border:2px solid var(--accent);
  border-radius:var(--radius);
  pointer-events:none;z-index:2;
  transition:all .35s ease;
  animation:ringPulse 1.5s ease-in-out infinite;
}
@keyframes ringPulse{0%,100%{opacity:1;transform:scale(1)}50%{opacity:.6;transform:scale(1.03)}}

.tour-tooltip{
  position:fixed!important;
  background:var(--surface)!important;
  border:1px solid var(--accent-glow)!important;
  border-radius:var(--radius)!important;
  padding:20px 24px 16px!important;
  max-width:360px!important;width:calc(100vw - 40px);
  box-shadow:0 8px 32px rgba(0,0,0,0.4),0 0 0 1px var(--accent-glow)!important;
  z-index:200000!important;
  pointer-events:auto!important;
  cursor:default;
}
.tour-tooltip *{pointer-events:auto!important}
.tour-title{font-weight:800;font-size:16px;margin-bottom:8px;color:var(--text)}
.tour-text{color:var(--muted2);font-size:14px;line-height:1.55;margin-bottom:16px}
.tour-actions{display:flex!important;align-items:center!important;justify-content:center!important;gap:12px!important;flex-wrap:wrap!important;padding-top:8px!important}
.tour-step-indicator{font-size:12px;color:var(--muted);flex:none}
.tour-btn{
  border:none!important;border-radius:var(--radius-sm)!important;cursor:pointer!important;
  font-weight:600!important;font-size:15px!important;
  min-width:120px!important;padding:12px 24px!important;
  transition:all var(--transition);
  pointer-events:auto!important;position:relative!important;z-index:1!important;
}
.tour-btn-skip{background:var(--surface3);color:var(--muted2)}
.tour-btn-skip:hover{background:var(--surface2);color:var(--text)}
.tour-btn-next{background:var(--accent);color:#fff;box-shadow:0 4px 16px var(--accent-glow)}
.tour-btn-next:hover{background:var(--accent2)}

/* ── Celebration ── */
.confetti-canvas{
  position:fixed;inset:0;z-index:7998;
  pointer-events:none!important;
  display:none;
}
.confetti-canvas.active{display:block}
.celebration-overlay{
  display:none;position:fixed;inset:0;z-index:7999;
  background:rgba(0,0,0,0.8);
  align-items:center;justify-content:center;
  backdrop-filter:blur(4px);
  pointer-events:none;
}
.celebration-overlay.active{display:flex}
.celebration-card{
  background:var(--surface);
  border:1px solid var(--accent-glow);
  border-radius:20px;
  padding:40px 32px;
  text-align:center;
  cursor:pointer;
  max-width:360px;width:90%;
  box-shadow:0 0 60px var(--accent-glow);
  animation:celebIn .4s cubic-bezier(.34,1.56,.64,1);
}
@keyframes celebIn{from{transform:scale(.7);opacity:0}to{transform:scale(1);opacity:1}}
.celebration-emoji{font-size:60px;margin-bottom:12px}
.celebration-title{font-size:24px;font-weight:800;color:var(--text);margin-bottom:8px}
.celebration-sub{color:var(--muted2);font-size:14px;margin-bottom:12px}
.celebration-xp{
  background:rgba(108,99,255,0.15);
  border:1px solid var(--accent-glow);
  color:var(--accent2);
  font-weight:700;font-size:18px;
  padding:8px 20px;border-radius:30px;
  display:inline-block;
}

/* ── Register Gate ── */
#registerGate{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,0.92);z-index:200001;
  align-items:center;justify-content:center;padding:20px;
}

/* ── Login Modal — z-index ABOVE welcomeModal (9999) ── */
.login-modal{
  display:none;position:fixed;inset:0;
  background:rgba(0,0,0,0.85);z-index:10000;
  align-items:center;justify-content:center;padding:20px;
  backdrop-filter:blur(4px);
}
.login-modal.active{display:flex}
.login-box{
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:20px;padding:32px 28px;
  max-width:400px;width:100%;text-align:center;
}
.login-box h2{font-size:20px;font-weight:800;margin-bottom:8px}
.login-box p{color:var(--muted2);font-size:14px;margin-bottom:20px}
.login-input{
  width:100%;padding:13px 16px;
  border-radius:var(--radius-sm);
  border:1px solid var(--border2);
  background:var(--surface2);
  color:var(--text);font-size:15px;
  outline:none;margin-bottom:12px;
}
.login-input:focus{border-color:var(--accent);box-shadow:0 0 0 3px var(--accent-glow)}
.oauth-provider-list{
  display:flex;flex-direction:column;gap:10px;
}
.oauth-btn{
  width:100%;display:flex;align-items:center;justify-content:center;gap:10px;
  padding:13px 16px;border-radius:12px;border:1px solid var(--border2);
  background:var(--surface2);color:var(--text);font-size:14px;font-weight:700;
  cursor:pointer;transition:all var(--transition);
}
.oauth-btn:hover{
  border-color:var(--accent-glow);
  background:rgba(108,99,255,0.08);
}
.oauth-btn-apple{
  background:#111827;color:#f8fafc;border-color:rgba(255,255,255,0.12);
}
.oauth-btn-apple:hover{
  border-color:rgba(255,255,255,0.22);
  background:#0f172a;
}
.oauth-btn-icon{
  width:22px;height:22px;border-radius:999px;display:inline-flex;align-items:center;justify-content:center;
  font-size:12px;font-weight:800;background:rgba(255,255,255,0.9);color:#111827;flex-shrink:0;
}
.oauth-btn-google .oauth-btn-icon{
  background:#fff;color:#4285f4;
}
.oauth-status{
  margin:14px 0 0;font-size:12px;line-height:1.5;color:var(--muted2);
}

/* ── Omar ── */
.omar-panel{
  position:fixed;bottom:24px;right:24px;
  z-index:3000;display:flex;flex-direction:column;align-items:flex-end;gap:8px;
}
.omar-chat{
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:var(--radius);
  width:300px;box-shadow:0 8px 32px rgba(0,0,0,0.4);
  display:none;
}
.omar-chat.open{display:block}
.omar-header{
  display:flex;align-items:center;gap:10px;
  padding:14px 16px;
  border-bottom:1px solid var(--border);
}
.omar-avatar{
  position:relative;
  width:42px;
  height:42px;
  border-radius:14px;
  background:
    radial-gradient(circle at 32% 38%, rgba(255,255,255,.95) 0 4px, transparent 4.5px),
    radial-gradient(circle at 68% 38%, rgba(255,255,255,.95) 0 4px, transparent 4.5px),
    linear-gradient(180deg, #8b7cff 0%, #6c63ff 100%);
  box-shadow:0 8px 20px rgba(108,99,255,.24), inset 0 1px 0 rgba(255,255,255,.2);
  display:flex;
  align-items:center;
  justify-content:center;
}
.omar-avatar::before{
  content:'';
  position:absolute;
  top:-9px;
  left:50%;
  width:16px;
  height:10px;
  border-top:2px solid rgba(196,181,253,.95);
  border-left:2px solid rgba(196,181,253,.95);
  border-right:2px solid rgba(196,181,253,.95);
  border-radius:10px 10px 0 0;
  transform:translateX(-50%);
}
.omar-avatar::after{
  content:'';
  position:absolute;
  top:-13px;
  left:50%;
  width:7px;
  height:7px;
  border-radius:50%;
  background:#f8c45c;
  box-shadow:0 0 12px rgba(248,196,92,.7);
  transform:translateX(-50%);
}
.omar-avatar-face{
  position:relative;
  top:5px;
  font-size:12px;
  letter-spacing:-1px;
  color:#f8fafc;
  text-shadow:0 1px 0 rgba(15,23,42,.25);
}
.omar-header-name{font-weight:700;font-size:14px}
.omar-header-role{font-size:11px;color:var(--muted)}
.omar-msg{padding:14px 16px;font-size:13px;color:var(--muted2);line-height:1.55;min-height:60px}
.omar-btn{
  width:52px;height:52px;border-radius:50%;
  background:linear-gradient(135deg,#7c73ff 0%,#6c63ff 58%,#54c7d3 100%);
  border:1px solid rgba(255,255,255,.12);
  font-size:22px;cursor:pointer;
  box-shadow:0 4px 20px var(--accent-glow);
  transition:transform var(--transition),box-shadow var(--transition);
  display:flex;align-items:center;justify-content:center;
  position:relative;
  overflow:hidden;
}
.omar-btn::before{
  content:'';
  position:absolute;
  inset:6px;
  border-radius:50%;
  background:radial-gradient(circle at 30% 30%, rgba(255,255,255,.24), transparent 45%);
}
.omar-btn-face{
  position:relative;
  z-index:1;
  font-size:14px;
  letter-spacing:-1px;
  color:#fff;
}
.omar-btn:hover{transform:scale(1.08);box-shadow:0 6px 28px var(--accent-glow)}

/* Omar visual variants — switch with data-omar-style on .omar-panel */
.omar-panel[data-omar-style="buddy"] .omar-avatar-face,
.omar-panel[data-omar-style="buddy"] .omar-btn-face{
  font-family:inherit;
}

.omar-panel[data-omar-style="orbiter"] .omar-avatar{
  width:44px;
  height:44px;
  border-radius:50%;
  background:
    radial-gradient(circle at 50% 52%, #eff6ff 0 10px, transparent 10.5px),
    radial-gradient(circle at 35% 38%, #0f172a 0 2px, transparent 2.5px),
    radial-gradient(circle at 65% 38%, #0f172a 0 2px, transparent 2.5px),
    linear-gradient(180deg, #7dd3fc 0%, #38bdf8 100%);
  box-shadow:0 10px 24px rgba(56,189,248,.22), inset 0 1px 0 rgba(255,255,255,.24);
}
.omar-panel[data-omar-style="orbiter"] .omar-avatar::before{
  top:-6px;
  width:52px;
  height:20px;
  border:2px solid rgba(125,211,252,.9);
  border-radius:50%;
  transform:translateX(-50%) rotate(-10deg);
  background:none;
}
.omar-panel[data-omar-style="orbiter"] .omar-avatar::after{
  top:6px;
  left:auto;
  right:-5px;
  width:8px;
  height:8px;
  transform:none;
  background:#fef08a;
  box-shadow:0 0 14px rgba(254,240,138,.8);
}
.omar-panel[data-omar-style="orbiter"] .omar-avatar-face,
.omar-panel[data-omar-style="orbiter"] .omar-btn-face{
  color:#0f172a;
  font-size:11px;
  top:8px;
}
.omar-panel[data-omar-style="orbiter"] .omar-btn{
  background:linear-gradient(135deg,#38bdf8 0%,#22d3ee 100%);
  box-shadow:0 6px 22px rgba(34,211,238,.32);
}

.omar-panel[data-omar-style="pixel"] .omar-avatar{
  border-radius:10px;
  background:
    linear-gradient(180deg,#2b3345 0%,#111827 100%);
  box-shadow:0 8px 18px rgba(15,23,42,.34), inset 0 0 0 2px rgba(148,163,184,.16);
}
.omar-panel[data-omar-style="pixel"] .omar-avatar::before{
  top:-8px;
  width:22px;
  height:8px;
  border:none;
  border-radius:0;
  background:
    linear-gradient(90deg, transparent 0 2px, #94a3b8 2px 4px, transparent 4px 8px, #94a3b8 8px 10px, transparent 10px 14px, #94a3b8 14px 16px, transparent 16px 20px);
}
.omar-panel[data-omar-style="pixel"] .omar-avatar::after{
  top:12px;
  left:50%;
  width:18px;
  height:8px;
  transform:translateX(-50%);
  background:
    linear-gradient(90deg, #f8fafc 0 4px, transparent 4px 6px, #f8fafc 6px 10px, transparent 10px 14px, #f8fafc 14px 18px);
  border-radius:0;
  box-shadow:none;
}
.omar-panel[data-omar-style="pixel"] .omar-avatar-face{
  color:#67e8f9;
  font-family:"Courier New", monospace;
  font-size:10px;
  top:6px;
}
.omar-panel[data-omar-style="pixel"] .omar-btn{
  border-radius:16px;
  background:linear-gradient(135deg,#1f2937 0%,#4c1d95 100%);
  box-shadow:0 8px 18px rgba(76,29,149,.32);
}
.omar-panel[data-omar-style="pixel"] .omar-btn::before{
  inset:8px;
  border-radius:10px;
  background:linear-gradient(180deg,rgba(255,255,255,.14),transparent);
}
.omar-panel[data-omar-style="pixel"] .omar-btn-face{
  font-family:"Courier New", monospace;
  font-size:11px;
  color:#67e8f9;
}

.omar-panel[data-omar-style="marshmallow"] .omar-avatar{
  border-radius:16px;
  background:
    radial-gradient(circle at 32% 40%, #ffffff 0 4px, transparent 4.5px),
    radial-gradient(circle at 68% 40%, #ffffff 0 4px, transparent 4.5px),
    linear-gradient(180deg,#f9a8d4 0%,#c4b5fd 100%);
  box-shadow:0 10px 20px rgba(196,181,253,.28), inset 0 1px 0 rgba(255,255,255,.28);
}
.omar-panel[data-omar-style="marshmallow"] .omar-avatar::before{
  top:-7px;
  width:18px;
  height:12px;
  border:none;
  border-radius:999px;
  background:linear-gradient(90deg,#f9a8d4 0%,#fde68a 100%);
}
.omar-panel[data-omar-style="marshmallow"] .omar-avatar::after{
  top:auto;
  bottom:-5px;
  left:50%;
  width:16px;
  height:8px;
  transform:translateX(-50%);
  background:#f8fafc;
  box-shadow:none;
  border-radius:0 0 12px 12px;
}
.omar-panel[data-omar-style="marshmallow"] .omar-btn{
  background:linear-gradient(135deg,#f9a8d4 0%,#a78bfa 100%);
  box-shadow:0 8px 22px rgba(167,139,250,.28);
}
.omar-panel[data-omar-style="marshmallow"] .omar-btn-face{
  font-size:13px;
}

/* ── Toast ── */
.toast-stack{
  position:fixed;bottom:80px;left:50%;transform:translateX(-50%);
  /* Reset v1 top/right to prevent stretching into a giant invisible overlay */
  top:auto;right:auto;
  z-index:9997;display:flex;flex-direction:column;gap:8px;align-items:center;
  pointer-events:none;
}
.toast{pointer-events:auto}
.toast{
  padding:10px 20px;border-radius:30px;font-weight:600;font-size:13px;
  box-shadow:0 4px 20px rgba(0,0,0,0.3);
  animation:toastIn .3s ease;white-space:nowrap;
}
@keyframes toastIn{from{opacity:0;transform:translateY(12px)}to{opacity:1;transform:translateY(0)}}
.toast-success{background:#065f46;color:#34d399;border:1px solid rgba(52,211,153,0.25)}
.toast-error{background:#7f1d1d;color:#fca5a5;border:1px solid rgba(252,165,165,0.25)}
.toast-info{background:var(--surface);color:var(--accent2);border:1px solid var(--accent-glow)}
.toast-warning{background:#78350f;color:#fde68a;border:1px solid rgba(253,230,138,0.25)}

/* ── Aide modal ── */
.aide-btn{
  position:fixed;bottom:24px;left:24px;z-index:2999;
  width:44px;height:44px;border-radius:50%;
  background:var(--surface2);border:1px solid var(--border2);
  color:var(--muted2);font-size:18px;font-weight:700;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all var(--transition);
}
.aide-btn:hover{background:var(--surface3);color:var(--text)}
.aide-modal{
  display:none;position:fixed;inset:0;z-index:9000;
  background:rgba(0,0,0,0.8);align-items:center;justify-content:center;padding:20px;
  backdrop-filter:blur(4px);
}
.aide-modal.open{display:flex}
.aide-box{
  background:var(--surface);
  border:1px solid var(--border2);
  border-radius:20px;
  padding:28px;max-width:520px;width:100%;
  max-height:80vh;overflow-y:auto;position:relative;
}
.aide-close{
  position:absolute;top:14px;right:16px;
  background:none;border:none;color:var(--muted);font-size:22px;cursor:pointer;
}
.aide-section{margin-bottom:20px}
.aide-section-title{font-weight:700;font-size:12px;text-transform:uppercase;letter-spacing:1px;color:var(--muted);margin-bottom:10px}
.aide-row{display:flex;gap:10px;margin-bottom:6px;align-items:flex-start}
.aide-kw{
  font-family:monospace;font-size:12px;font-weight:700;
  background:var(--surface2);color:var(--accent2);
  padding:2px 8px;border-radius:5px;flex-shrink:0;white-space:nowrap;
}
.aide-desc{font-size:13px;color:var(--muted2);display:flex;flex-direction:column;gap:2px}
.aide-example{font-family:monospace;font-size:11px;color:var(--muted);background:var(--bg2);padding:2px 6px;border-radius:4px;margin-top:2px;display:inline-block}

/* ══════════════════════════════════════════
   APP LAYOUT
══════════════════════════════════════════ */
#appContainer{
  display:none;
  flex-direction:column;
  height:100vh;height:100dvh;
  overflow:hidden;
}

/* ── Top navigation bar ── */
.topnav{
  height:auto;min-height:var(--topbar-h);
  background:var(--bg2);
  border-bottom:1px solid var(--border);
  display:flex;align-items:stretch;
  padding:0 20px;gap:0;
  flex-shrink:0;
  position:relative;z-index:200;
}
.topnav-logo{
  font-size:17px;font-weight:800;
  color:var(--text);
  letter-spacing:-.3px;
  margin-right:24px;
  white-space:nowrap;
  display:flex;align-items:center;gap:8px;
  align-self:center;
}
.topnav-logo span{color:var(--accent)}
.topnav-nav{
  display:flex;align-items:stretch;gap:2px;
  flex:1;overflow-x:auto;
  scrollbar-width:none;
}
.topnav-nav::-webkit-scrollbar{display:none}
.nav-btn{
  padding:14px 24px;border-radius:var(--radius-sm);
  border:none;background:transparent;
  color:var(--muted2);font-weight:500;font-size:14px;
  cursor:pointer;white-space:nowrap;
  min-height:56px;min-width:60px;
  transition:all var(--transition);
  position:relative;
  /* Generous click zone */
  -webkit-tap-highlight-color:transparent;
  touch-action:manipulation;
}
.nav-btn:hover{background:var(--surface);color:var(--text)}
.nav-btn.active{
  background:var(--surface);
  color:var(--accent2);font-weight:700;
}
.nav-btn.active::after{
  content:'';
  position:absolute;bottom:-1px;left:12px;right:12px;
  height:2px;background:var(--accent);border-radius:2px;
}
.topnav-right{
  display:flex;align-items:center;gap:8px;margin-left:16px;flex-shrink:0;
  align-self:center;
}
/* Daily limit badge */
.daily-limit-badge{
  display:flex;align-items:center;gap:4px;font-size:11px;font-weight:600;
  color:var(--muted2);margin-right:4px;padding:3px 8px;
  background:var(--surface2);border:1px solid var(--border);border-radius:var(--radius-sm);
}
.daily-limit-badge.warning{color:var(--warning);border-color:var(--warning)}
.daily-limit-badge.exhausted{color:var(--error);border-color:var(--error)}
.topbar-btn{
  width:36px;height:36px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);
  color:var(--muted2);font-size:16px;
  cursor:pointer;display:flex;align-items:center;justify-content:center;
  transition:all var(--transition);
}
.topbar-btn.auth-btn{
  width:auto;
  padding:0 12px;
  font-size:12px;
  font-weight:700;
  letter-spacing:.02em;
}
.topbar-btn:hover{background:var(--surface2);color:var(--text);border-color:var(--border2)}
.profile-badge{
  display:flex;align-items:center;gap:8px;
  background:var(--surface);border:1px solid var(--border);
  border-radius:30px;padding:5px 12px 5px 6px;cursor:default;
  transition:all var(--transition);
}
.profile-badge:hover{border-color:var(--border)}
.profile-badge-avatar{font-size:20px;line-height:1}
.profile-badge-xp{font-size:12px;font-weight:700;color:var(--accent2)}

/* Hamburger */
.hamburger{
  display:none;width:36px;height:36px;
  border-radius:var(--radius-sm);background:var(--surface);
  border:1px solid var(--border);color:var(--muted2);font-size:18px;
  cursor:pointer;align-items:center;justify-content:center;
}
.mobile-menu-btn{
  display:none;
  position:fixed;top:12px;left:12px;z-index:8500;
  width:40px;height:40px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);
  color:var(--text);font-size:18px;cursor:pointer;
  align-items:center;justify-content:center;
}
.sidebar-overlay{
  display:none;position:fixed;inset:0;z-index:399;
  background:rgba(0,0,0,0.6);
}

/* ── Body area below topnav ── */
.app-body{
  display:flex;flex:1;overflow:hidden;
}

/* ── Sidebar Left ── */
#sidebarLeft{
  width:var(--sidebar-w);
  min-width:var(--sidebar-w);
  background:var(--bg2);
  border-right:1px solid var(--border);
  display:flex;flex-direction:column;
  overflow:hidden;
  flex-shrink:0;
  transition:width var(--transition),min-width var(--transition);
  position:relative;z-index:100;
}
#sidebarLeft.collapsed{
  width:var(--sidebar-collapsed);
  min-width:var(--sidebar-collapsed);
}
#sidebarLeft .sidebar-inner{
  display:flex;flex-direction:column;
  flex:1;overflow:hidden;
  padding:0;
}
.sidebar-toggle-btn{
  width:100%;padding:10px 12px;
  background:var(--surface2);border:none;border-bottom:2px solid var(--border);
  color:var(--accent2);font-size:14px;font-weight:600;cursor:pointer;
  display:flex;align-items:center;justify-content:center;gap:6px;
  transition:all var(--transition);flex-shrink:0;letter-spacing:.3px;
}
.sidebar-toggle-btn:hover{color:var(--accent);background:var(--surface3);border-bottom-color:var(--accent-glow)}
#sidebarLeft.collapsed .sidebar-toggle-btn{
  background:rgba(108,99,255,.12);border-bottom-color:var(--accent-glow);
  color:var(--accent);padding:12px;
}
#sidebarLeft.collapsed .sidebar-toggle-btn .toggle-label{display:none}

.sidebar-reopen{position:fixed;top:50%;transform:translateY(-50%);z-index:50;padding:8px 4px;background:var(--surface2);border:1px solid var(--border);border-radius:0 8px 8px 0;color:var(--accent);cursor:pointer;font-size:14px}
.sidebar-reopen-left{left:0}

.sidebar-scroll{
  flex:1;overflow-y:auto;padding:16px 12px;
}
#sidebarLeft.collapsed .sidebar-scroll{padding:8px 4px}
#sidebarLeft.collapsed .sidebar-label{display:none}
#sidebarLeft.collapsed .profile-info{display:none}
#sidebarLeft.collapsed .stats{display:none}
#sidebarLeft.collapsed .tables-section h3{display:none}

.profile{display:flex;align-items:center;gap:10px;margin-bottom:16px;padding-bottom:14px;border-bottom:1px solid var(--border)}
.avatar{font-size:32px;flex-shrink:0;line-height:1}
.profile-info{flex:1;min-width:0}
.profile-name{font-weight:700;font-size:13px;white-space:nowrap;overflow:hidden;text-overflow:ellipsis}
.profile-title{font-size:11px;color:var(--muted);margin:2px 0 4px}
.xp-bar{height:4px;background:var(--surface3);border-radius:2px;overflow:hidden}
.xp-fill{height:100%;background:linear-gradient(90deg,var(--accent),var(--accent2));border-radius:2px;transition:width .4s ease}

.stats{display:grid;grid-template-columns:1fr 1fr;gap:8px;margin-bottom:16px}
.stat{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:8px;text-align:center;
}
.stat-value{font-size:20px;font-weight:800;color:var(--accent2)}
.stat-label{font-size:10px;color:var(--muted);text-transform:uppercase;letter-spacing:.5px;margin-top:2px}

.tables-section h3{
  font-size:11px;font-weight:700;text-transform:uppercase;
  letter-spacing:.8px;color:var(--muted);margin-bottom:8px;
}
.table-chip{
  display:flex;align-items:center;gap:6px;
  padding:7px 10px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);
  cursor:pointer;margin-bottom:5px;font-size:12px;
  transition:all var(--transition);
  position:relative;
}
.table-chip:hover{border-color:var(--accent-glow);background:var(--surface2)}
.table-chip.table-relevant{
  border-color:var(--accent);
  box-shadow:0 0 0 2px var(--accent-glow),0 0 12px var(--accent-glow);
  background:rgba(108,99,255,0.08);
}
.table-cols{margin-left:auto;color:var(--muted);font-size:10px}

/* ── Main content ── */
.main{
  flex:1;overflow:hidden;
  display:flex;flex-direction:column;
  min-width:0;
}
.tab-pane{
  display:none;flex:1;overflow-y:auto;
  padding:24px;
}
.tab-pane.active{display:flex;flex-direction:column}

/* ── Sidebar Right ── */
.sidebar-right{
  width:220px;min-width:220px;
  background:var(--bg2);border-left:1px solid var(--border);
  flex-shrink:0;overflow-y:auto;padding:16px 12px;
  transition:all var(--transition);
}
.sidebar-right.collapsed{width:0;min-width:0;padding:0;overflow:hidden}
.sidebar-right-reopen{
  display:none;position:fixed;top:50%;right:0;transform:translateY(-50%);
  width:24px;height:48px;border-radius:6px 0 0 6px;
  background:var(--accent);border:1px solid var(--accent-glow);border-right:none;
  color:#fff;font-size:14px;cursor:pointer;
  align-items:center;justify-content:center;z-index:999;
  box-shadow:-2px 0 8px rgba(108,99,255,.3);
  transition:all var(--transition);
}
.sidebar-right-reopen:hover{background:var(--accent2);box-shadow:-3px 0 12px rgba(108,99,255,.5)}
/* Left sidebar reopen */
.sidebar-left-reopen{
  display:none;position:fixed;top:50%;left:0;transform:translateY(-50%);
  width:24px;height:48px;border-radius:0 6px 6px 0;
  background:var(--accent);border:1px solid var(--accent-glow);border-left:none;
  color:#fff;font-size:14px;cursor:pointer;
  align-items:center;justify-content:center;z-index:999;
  box-shadow:2px 0 8px rgba(108,99,255,.3);
  transition:all var(--transition);
}
.sidebar-left-reopen:hover{background:var(--accent2);box-shadow:3px 0 12px rgba(108,99,255,.5)}
.sidebar-right h3{
  font-size:11px;font-weight:700;text-transform:uppercase;
  letter-spacing:.8px;color:var(--muted);margin-bottom:8px;
}
.skill-row{display:flex;align-items:center;gap:8px;margin-bottom:7px}
.skill-dot{width:10px;height:10px;border-radius:50%;flex-shrink:0}
.skill-dot.locked{background:var(--surface3)}
.skill-dot.learning{background:var(--warning)}
.skill-dot.mastered{background:var(--success)}
.skill-name{font-size:12px;flex:1;color:var(--muted2)}
.skill-pct{font-size:11px;color:var(--muted);font-weight:600}
.badge-grid{display:flex;flex-wrap:wrap;gap:6px;margin-bottom:16px}
.badge{
  display:flex;flex-direction:column;align-items:center;
  padding:6px 8px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);
  font-size:10px;color:var(--muted2);text-align:center;gap:2px;
  width:56px;cursor:default;transition:all var(--transition);
}
.badge:not(.locked){border-color:rgba(253,230,138,0.3);background:rgba(253,230,138,0.05)}
.badge.locked{opacity:.4;filter:grayscale(1)}
.badge-icon{font-size:20px}

/* ══════════════════════════════════════════
   PLAYGROUND TAB — IMMERSIVE 2-COL
══════════════════════════════════════════ */
#tab-playground{flex-direction:column;gap:0;padding:20px}

.challenge-header{
  display:flex;justify-content:space-between;align-items:center;
  margin-bottom:16px;
}
.challenge-header h2{font-size:18px;font-weight:800}
.filter-bar{display:flex;gap:6px;flex-wrap:wrap}
.filter-btn{
  padding:5px 12px;border-radius:30px;font-size:12px;font-weight:600;
  border:1px solid var(--border2);background:transparent;
  color:var(--muted2);cursor:pointer;transition:all var(--transition);
}
.filter-btn:hover{border-color:var(--accent-glow);color:var(--text)}
.filter-btn.filter-active{
  background:var(--accent);border-color:var(--accent);
  color:#fff;box-shadow:0 2px 10px var(--accent-glow);
}

.challenge-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(200px,1fr));
  gap:12px;
  margin-bottom:20px;
}
.ch-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:14px;
  cursor:pointer;transition:all var(--transition);
  position:relative;overflow:hidden;
  pointer-events:auto!important;
  z-index:1;
}
.ch-card::before{
  content:'';position:absolute;inset:0;
  background:linear-gradient(135deg,var(--accent),transparent);
  opacity:0;transition:opacity var(--transition);
}
.ch-card:hover{border-color:var(--accent-glow);transform:translateY(-2px);box-shadow:0 6px 20px rgba(0,0,0,0.3)}
.ch-card:hover::before{opacity:.04}
.ch-card.active{border-color:var(--accent);box-shadow:0 0 0 2px var(--accent-glow)}
.ch-card.completed{border-color:rgba(52,211,153,0.35);background:rgba(52,211,153,0.04);opacity:1}
.ch-card.completed::after{
  content:'✓';position:absolute;top:10px;right:12px;
  color:var(--success);font-weight:800;font-size:14px;
}
.ch-tier{
  font-size:10px;font-weight:700;padding:2px 8px;border-radius:30px;
  letter-spacing:.5px;margin-right:4px;
}
.tier-1{background:rgba(52,211,153,0.15);color:#34d399}
.tier-2{background:rgba(245,158,11,0.15);color:#f59e0b}
.tier-3{background:rgba(239,68,68,0.15);color:#ef4444}
.tier-4{background:rgba(168,85,247,0.15);color:#a855f7}
.ch-domain{font-size:10px;color:var(--muted);font-weight:600;text-transform:uppercase;letter-spacing:.3px}
.ch-title{font-weight:700;font-size:13px;margin:6px 0 4px;line-height:1.3}
.ch-desc{font-size:12px;color:var(--muted2);line-height:1.4;margin-bottom:6px}
.ch-xp{font-size:11px;font-weight:700;color:var(--accent2)}

/* ── Active challenge zone — vertical flow ── */
#activeChallenge{display:none;margin-top:0}

/* Notification card */
.notif-card{
  border-radius:var(--radius);
  padding:12px 14px;font-size:13px;
  border:1px solid;line-height:1.5;
}
.notif-card.notif-teams{
  background:rgba(100,153,255,0.08);
  border-color:rgba(100,153,255,0.25);
}
.notif-card.notif-slack{
  background:rgba(74,21,75,0.25);
  border-color:rgba(200,100,200,0.3);
}
.notif-card.notif-email{
  background:rgba(52,211,153,0.06);
  border-color:rgba(52,211,153,0.2);
}
.notif-card.notif-sms{
  background:rgba(245,158,11,0.08);
  border-color:rgba(245,158,11,0.25);
}
.notif-card-header{
  font-size:11px;font-weight:700;letter-spacing:.5px;
  text-transform:uppercase;opacity:.7;margin-bottom:6px;
}
.notif-card-body{color:var(--muted2)}
.notif-card-body strong{color:var(--text)}

.challenge-desc-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:16px;
}
.challenge-desc-card h3{font-size:16px;font-weight:800;margin-bottom:6px}
.challenge-desc-card p{color:var(--muted2);font-size:13px;line-height:1.55;margin-bottom:8px}
.challenge-context{font-size:12px;color:var(--muted);background:var(--surface2);border-radius:var(--radius-sm);padding:8px 10px}

.hint-btn{
  margin-top:auto;padding:9px 16px;border-radius:var(--radius-sm);
  background:rgba(245,158,11,0.1);border:1px solid rgba(245,158,11,0.25);
  color:#f59e0b;font-weight:600;font-size:13px;cursor:pointer;
  transition:all var(--transition);
}
.hint-btn:hover{background:rgba(245,158,11,0.18)}

/* ── Editor ── */
.editor-wrap{
  position:relative;flex:1;min-height:200px;
  border-radius:var(--radius);overflow:hidden;
  background:#0d1117;border:1px solid var(--border2);
}
.editor-highlight{
  position:absolute;inset:0;padding:14px;
  font-family:'Fira Code',monospace;font-size:14px;
  line-height:1.6;white-space:pre-wrap;word-wrap:break-word;
  color:var(--editor-fg);pointer-events:none;z-index:1;
  overflow:hidden;tab-size:2;
}
/* sql-editor: transparent text so highlight layer shows through, caret visible */
.sql-editor{
  width:100%;min-height:200px;
  background:transparent;border:none;outline:none;
  padding:14px;font-family:'Fira Code',monospace;font-size:14px;
  line-height:1.6;color:transparent;resize:none;
  caret-color:#fff;
  position:relative;z-index:2;cursor:text;
  user-select:text;-webkit-user-select:text;
  tab-size:2;
}
.sql-editor:focus{
  outline:none;
}
.editor-wrap:focus-within{
  border-color:var(--accent)!important;
  box-shadow:0 0 0 2px var(--accent-glow);
}
.ac-dropdown{
  position:absolute;left:14px;
  background:var(--surface);border:1px solid var(--accent-glow);
  border-radius:var(--radius-sm);min-width:200px;max-height:200px;overflow-y:auto;
  box-shadow:0 8px 24px rgba(0,0,0,0.5);z-index:100;display:none;
}
.ac-dropdown.open{display:block}
.ac-item{
  padding:7px 12px;font-size:13px;cursor:pointer;
  display:flex;align-items:center;gap:8px;color:var(--text);
  transition:background var(--transition);font-family:'Fira Code',monospace;
}
.ac-item:hover,.ac-item.selected{background:var(--surface2);color:var(--accent2)}
.ac-tag{font-size:9px;padding:1px 5px;border-radius:3px;font-weight:700;text-transform:uppercase;letter-spacing:.5px}
.ac-tag-kw{background:rgba(108,99,255,0.2);color:var(--accent2)}
.ac-tag-fn{background:rgba(52,211,153,0.2);color:var(--success)}
.ac-tag-tbl{background:rgba(245,158,11,0.2);color:#f59e0b}
.ac-tag-col{background:rgba(100,200,255,0.2);color:#60c0ff}

.editor-actions{display:flex;gap:8px;flex-wrap:wrap}
.btn{
  padding:9px 16px;border-radius:var(--radius-sm);
  border:none;font-weight:600;font-size:13px;
  cursor:pointer;transition:all var(--transition);display:inline-flex;align-items:center;gap:6px;
}
.btn-run{background:rgba(52,211,153,0.15);color:#34d399;border:1px solid rgba(52,211,153,0.25)}
.btn-run:hover{background:rgba(52,211,153,0.25)}
.btn-validate{background:var(--accent);color:#fff;box-shadow:0 4px 16px var(--accent-glow)}
.btn-validate:hover{background:var(--accent2)}
.btn-omar{background:rgba(108,99,255,0.12);color:var(--accent2);border:1px solid var(--accent-glow)}
.btn-omar:hover{background:rgba(108,99,255,0.22)}
.btn-hint{background:rgba(245,158,11,0.12);color:#f59e0b;border:1px solid rgba(245,158,11,0.25)}
.btn-hint:hover{background:rgba(245,158,11,0.22)}
.btn-clear{background:var(--surface2);color:var(--muted2);border:1px solid var(--border)}
.btn-clear:hover{background:var(--surface3);color:var(--text)}

.results{
  border-radius:var(--radius);overflow:auto;
  max-height:240px;font-size:13px;
}
.results table{width:100%;border-collapse:collapse}
.results th{
  background:var(--surface2);padding:8px 12px;
  text-align:left;font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;color:var(--muted);
  border-bottom:1px solid var(--border);white-space:nowrap;
}
.results td{
  padding:7px 12px;border-bottom:1px solid var(--border);
  color:var(--muted2);
}
.results tr:hover td{background:var(--surface)}
.results-ok{
  padding:12px 16px;border-radius:var(--radius-sm);
  background:rgba(52,211,153,0.1);border:1px solid rgba(52,211,153,0.2);
  color:#34d399;font-weight:600;
}
.results-err{
  padding:12px 16px;border-radius:var(--radius-sm);
  background:rgba(239,68,68,0.1);border:1px solid rgba(239,68,68,0.2);
  color:#ef4444;font-weight:600;font-family:monospace;font-size:12px;
}

/* ══════════════════════════════════════════
   FONDAMENTAUX TAB
══════════════════════════════════════════ */
#tab-fondamentaux{gap:16px;padding:24px}
.fondamentaux-grid{
  display:grid;
  grid-template-columns:repeat(auto-fill,minmax(300px,1fr));
  gap:16px;
}
.fondamental-card{
  background:var(--surface);border:1px solid var(--border);
  border-radius:var(--radius);padding:20px;
  transition:all var(--transition);
}
.fondamental-card:hover{border-color:var(--accent-glow);transform:translateY(-2px);box-shadow:0 8px 24px rgba(0,0,0,0.3)}
.fondamental-tag{
  display:inline-block;padding:3px 10px;border-radius:30px;
  font-size:11px;font-weight:700;letter-spacing:.5px;margin-bottom:10px;
}
.tag-select{background:rgba(52,211,153,0.15);color:#34d399}
.tag-where{background:rgba(245,158,11,0.15);color:#f59e0b}
.tag-groupby{background:rgba(108,99,255,0.15);color:var(--accent2)}
.tag-join{background:rgba(239,68,68,0.15);color:#ef4444}
.tag-orderby{background:rgba(100,200,255,0.15);color:#60c0ff}
.tag-casewhen{background:rgba(168,85,247,0.15);color:#a855f7}

.fondamental-card h4{font-size:15px;font-weight:700;margin-bottom:6px}
.fondamental-card p{font-size:13px;color:var(--muted2);margin-bottom:12px;line-height:1.5}
.fondamental-code{
  background:#0d1117;border:1px solid var(--border);
  border-radius:var(--radius-sm);padding:12px;
  font-family:'Fira Code',monospace;font-size:12px;
  color:#a8c4ff;line-height:1.6;
  white-space:pre;overflow-x:auto;margin-bottom:10px;
}
.fondamental-usecase{
  font-size:12px;color:var(--muted);
  background:var(--surface2);
  border-radius:var(--radius-sm);padding:6px 10px;
  margin-bottom:12px;
}
.fondamental-usecase strong{color:var(--muted2)}
.try-sandbox-btn{
  width:100%;padding:9px;border-radius:var(--radius-sm);
  background:rgba(108,99,255,0.1);border:1px solid var(--accent-glow);
  color:var(--accent2);font-weight:600;font-size:12px;cursor:pointer;
  transition:all var(--transition);
}
.try-sandbox-btn:hover{background:rgba(108,99,255,0.2)}

/* ══════════════════════════════════════════
   MISSIONS TAB
══════════════════════════════════════════ */
#tab-missions{padding:24px}
#tab-missions h2{font-size:18px;font-weight:800;margin-bottom:16px}

/* ══════════════════════════════════════════
   SANDBOX TAB
══════════════════════════════════════════ */
#tab-sandbox{padding:24px;gap:16px}
#tab-sandbox h2{font-size:18px;font-weight:800}
#tab-sandbox .editor-wrap{min-height:200px;height:220px}

/* ══════════════════════════════════════════
   LEADERBOARD TAB
══════════════════════════════════════════ */
#tab-leaderboard{padding:24px}
.leaderboard-section h2{font-size:18px;font-weight:800;margin-bottom:6px}
.lb-podium{display:flex;justify-content:center;gap:12px;margin-bottom:24px;align-items:flex-end}
.lb-table{width:100%;border-collapse:collapse}
.lb-table th{
  background:var(--surface);padding:10px 14px;
  text-align:left;font-size:11px;font-weight:700;
  text-transform:uppercase;letter-spacing:.5px;color:var(--muted);
  border-bottom:1px solid var(--border);
}
.lb-table td{
  padding:10px 14px;border-bottom:1px solid var(--border);
  font-size:13px;color:var(--muted2);
}
.lb-table tr:hover td{background:var(--surface)}

/* ══════════════════════════════════════════
   MOBILE
══════════════════════════════════════════ */
.mobile-bottom-nav{
  display:none;
  position:fixed;bottom:0;left:0;right:0;z-index:500;
  background:var(--bg2);border-top:1px solid var(--border);
  padding:6px 8px;
  grid-template-columns:repeat(5,minmax(0,1fr));
  gap:4px;
}
.mob-nav-btn{
  display:flex;flex-direction:column;align-items:center;justify-content:center;
  padding:6px 2px;border-radius:var(--radius-sm);border:none;
  background:transparent;color:var(--muted);cursor:pointer;
  font-size:10px;gap:2px;min-height:44px;transition:all var(--transition);
}
.mob-nav-btn .icon{font-size:18px}
.mob-nav-btn span:last-child{
  display:block;
  max-width:100%;
  white-space:nowrap;
  overflow:hidden;
  text-overflow:ellipsis;
  line-height:1.05;
}
.mob-nav-btn.active{color:var(--accent2);background:rgba(108,99,255,0.08)}

/* ══════════════════════════════════════════
   MODE SWITCH — Lab / Intro toggle
══════════════════════════════════════════ */
.mode-switch{display:flex;gap:4px;background:var(--surface);border-radius:10px;padding:3px;margin-right:12px}
.mode-btn{padding:7px 14px;border:none;border-radius:8px;background:transparent;color:var(--muted2);font-size:12px;font-weight:700;cursor:pointer;transition:all .2s;white-space:nowrap;letter-spacing:.02em}
.mode-btn.active{background:var(--accent);color:#fff;box-shadow:0 2px 8px rgba(108,99,255,0.3)}
.mode-btn:hover:not(.active){color:var(--text);background:var(--surface2)}

/* ══════════════════════════════════════════
   INTRO MODE — "Démarrer avec SQL"
══════════════════════════════════════════ */
.intro-mode{flex:1;display:flex;flex-direction:column;overflow:hidden;padding:0}
.intro-tabs{display:flex;gap:0;background:var(--bg2);border-bottom:1px solid var(--border);padding:0 24px;flex-shrink:0;justify-content:center}
.intro-tab{padding:12px 24px;border:none;background:transparent;color:var(--muted2);font-size:14px;font-weight:600;cursor:pointer;white-space:nowrap;border-bottom:2.5px solid transparent;transition:all .2s;letter-spacing:.01em}
.intro-tab.active{color:var(--accent2);border-bottom-color:var(--accent)}
.intro-tab:hover:not(.active){color:var(--text);background:var(--surface)}
.intro-bottom-nav{display:none}
.intro-bottom-nav .mob-nav-btn.active{color:var(--accent2);background:var(--surface)}
.intro-subtab{flex:1;overflow-y:auto;overflow-x:hidden;display:none}
.intro-subtab.active{display:flex;flex-direction:column}
.intro-scroll{max-width:720px;margin:0 auto;padding:40px 24px 80px;overflow-x:hidden;width:100%}

/* Hero */
.intro-hero{text-align:center;margin-bottom:48px}
.intro-hero-badge{display:inline-block;padding:6px 14px;border-radius:999px;background:rgba(108,99,255,0.12);color:var(--accent2);font-size:12px;font-weight:700;letter-spacing:.04em;text-transform:uppercase;margin-bottom:16px}
.intro-hero h1{font-size:36px;font-weight:900;color:var(--text);margin:0 0 12px;line-height:1.15}
.intro-hero-sub{color:var(--muted2);font-size:16px;line-height:1.6;max-width:520px;margin:0 auto}

/* Steps */
.intro-step{display:flex;gap:20px;margin-bottom:40px;position:relative}
.intro-step::before{content:'';position:absolute;left:19px;top:40px;bottom:-40px;width:2px;background:var(--border2)}
.intro-step:last-child::before{display:none}
.intro-step-num{width:40px;height:40px;border-radius:50%;background:var(--accent);color:#fff;font-size:18px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0;position:relative;z-index:1}
.intro-step-final .intro-step-num{background:var(--success);font-size:22px;width:40px;height:40px}
.intro-step-content{flex:1;min-width:0}
.intro-step-content h2{font-size:22px;font-weight:800;color:var(--text);margin:6px 0 10px}
.intro-step-content p{color:var(--muted2);font-size:14px;line-height:1.7;margin:0 0 14px}

/* Callout */
.intro-callout{display:flex;gap:10px;padding:14px 16px;border-radius:12px;background:rgba(108,99,255,0.06);border:1px solid rgba(108,99,255,0.15);margin-bottom:16px;align-items:flex-start}
.intro-callout-icon{font-size:18px;flex-shrink:0;margin-top:1px}
.intro-callout span:last-child{color:var(--text);font-size:13px;line-height:1.6}

/* Code blocks */
.intro-code-block{background:var(--editor-bg);border:1px solid var(--border2);border-radius:12px;overflow:hidden;margin-bottom:14px}
.intro-code-label{padding:8px 14px;font-size:10px;font-weight:700;text-transform:uppercase;letter-spacing:.06em;color:var(--muted);background:var(--surface);border-bottom:1px solid var(--border)}
.intro-code-block pre{margin:0;padding:16px;font-family:'JetBrains Mono',monospace;font-size:13px;line-height:1.7;overflow-x:auto}
.intro-code-block code{color:var(--editor-fg)}
.intro-code-block .kw{color:var(--editor-kw);font-weight:600}
.intro-code-block .str{color:var(--editor-str)}
.intro-code-block .fn{color:var(--editor-fn)}
.intro-code-block .num{color:var(--editor-num)}

/* Formation teaser */
.intro-formation-teaser{padding:18px 20px;border-radius:14px;background:linear-gradient(135deg,rgba(108,99,255,0.06),rgba(52,211,153,0.06));border:1px solid rgba(108,99,255,0.15);margin:16px 0;display:flex;flex-direction:column;gap:10px}
.intro-formation-badge{display:inline-block;padding:4px 10px;border-radius:999px;background:rgba(52,211,153,0.12);color:var(--success);font-size:11px;font-weight:700;letter-spacing:.03em;width:fit-content}
.intro-formation-teaser>span:last-of-type{color:var(--muted2);font-size:13px;line-height:1.6}
.intro-formation-link{display:inline-flex;align-items:center;gap:4px;padding:10px 18px;border-radius:10px;background:var(--success);color:#052e16;font-size:13px;font-weight:800;text-decoration:none;width:fit-content;transition:all .2s}
.intro-formation-link:hover{background:#6ee7b7;transform:translateY(-1px)}

/* Dashboard preview cards */
.intro-dashboard-preview{display:flex;gap:10px;margin:8px 0}
.intro-dash-card{flex:1;padding:14px 10px;border-radius:10px;background:var(--surface);border:1px solid var(--border2);text-align:center}
.intro-dash-icon{font-size:24px;margin-bottom:4px}
.intro-dash-label{font-size:11px;color:var(--muted2);font-weight:600}

/* Vocabulary grid */
.intro-vocab-grid{display:grid;grid-template-columns:1fr 1fr;gap:12px;margin-bottom:18px}
.intro-vocab-card{padding:16px;border-radius:12px;background:var(--surface);border:1px solid var(--border2)}
.intro-vocab-icon{font-size:24px;margin-bottom:8px}
.intro-vocab-term{font-size:14px;font-weight:700;color:var(--text);margin-bottom:4px}
.intro-vocab-def{font-size:12px;color:var(--muted2);line-height:1.5}

/* Explain text */
.intro-explain{color:var(--muted2);font-size:13px;font-style:italic;margin:0 0 14px}

/* Try button */
.intro-try-btn{display:inline-flex;align-items:center;gap:6px;padding:10px 20px;border:1px solid var(--accent);border-radius:10px;background:rgba(108,99,255,0.08);color:var(--accent2);font-size:13px;font-weight:700;cursor:pointer;transition:all .2s;margin-bottom:16px}
.intro-try-btn:hover{background:var(--accent);color:#fff}

/* Validate step button */
.intro-validate-btn{display:inline-flex;align-items:center;gap:6px;padding:9px 18px;border:1px solid rgba(52,211,153,0.4);border-radius:10px;background:rgba(52,211,153,0.08);color:#34d399;font-size:13px;font-weight:700;cursor:pointer;transition:all .2s;margin-top:6px;margin-bottom:8px}
.intro-validate-btn:hover{background:rgba(52,211,153,0.18);border-color:#34d399}
.intro-validate-btn.done,.intro-validate-btn:disabled{background:rgba(52,211,153,0.15);color:#6ee7b7;border-color:rgba(52,211,153,0.3);cursor:default;opacity:.75}

/* Done state for intro steps */
.intro-step.done .intro-step-num{background:rgba(52,211,153,0.2)!important;color:#34d399!important;border:2px solid #34d399!important}

/* Video embed */
.intro-video-slot{margin:16px 0;border-radius:12px;overflow:hidden;aspect-ratio:16/9;background:var(--surface)}
.intro-video-slot iframe{width:100%;height:100%;border:0}

/* Next action cards */
.intro-next-actions{display:grid;grid-template-columns:repeat(3,1fr);gap:12px;margin-top:20px}
.intro-action-card{display:flex;flex-direction:column;align-items:center;gap:8px;padding:24px 16px;border:1px solid var(--border2);border-radius:14px;background:var(--surface);cursor:pointer;transition:all .2s;text-align:center}
.intro-action-card:hover{border-color:var(--accent);background:rgba(108,99,255,0.06);transform:translateY(-2px)}
.intro-action-icon{font-size:32px}
.intro-action-label{font-size:14px;font-weight:700;color:var(--text)}
.intro-action-desc{font-size:11px;color:var(--muted2);line-height:1.4}

#wm-mobile-hint{display:none}

@media(max-width:768px){
  #wm-mobile-hint{display:block!important}
  .hamburger{display:flex}
  .mobile-menu-btn{display:flex}
  .sidebar-overlay{display:block}
  .topnav-nav{display:none}
  .topnav-logo{font-size:15px}
  .mode-switch{margin-right:6px}
  .mode-btn{padding:5px 10px;font-size:10px}
  /* Intro: hide top tabs, show bottom nav on mobile */
  .intro-tabs{display:none}
  .intro-bottom-nav{display:grid;grid-template-columns:repeat(3,1fr);padding-bottom:max(6px,env(safe-area-inset-bottom))}
  .intro-scroll{padding:24px 14px 80px;box-sizing:border-box;width:100%}
  .intro-hero{text-align:center;padding:0 4px}
  .intro-hero h1{font-size:24px}
  .intro-hero-sub{font-size:13px;max-width:100%}
  .intro-step{gap:12px}
  .intro-step-num{width:32px;height:32px;font-size:14px}
  .intro-step::before{left:15px}
  .intro-step-content{min-width:0;max-width:100%;word-wrap:break-word}
  .intro-step-content h2{font-size:17px}
  .intro-step-content p{font-size:13px}
  .intro-vocab-grid{grid-template-columns:1fr}
  .intro-vocab-card{padding:14px}
  .intro-callout{padding:12px 14px}
  .intro-callout span:last-child{font-size:12px}
  .intro-code-block pre{padding:12px;font-size:12px;overflow-x:auto;-webkit-overflow-scrolling:touch}
  .intro-formation-teaser{padding:14px 16px}
  .intro-formation-teaser>span:last-of-type{font-size:12px}
  .intro-try-btn,.intro-validate-btn{font-size:12px;padding:10px 16px;width:100%;justify-content:center}
  .intro-next-actions{grid-template-columns:1fr}
  .intro-action-card{flex-direction:row;text-align:left;padding:16px}
  .intro-action-icon{font-size:24px}
  .mobile-bottom-nav{display:grid}
  /* Override v1 style.css emoji-only tabs that add ::after emojis on .tab under 480px */
  .mob-nav-btn.tab{font-size:10px!important}
  .mob-nav-btn.tab::after{content:none!important}
  .app-body{margin-bottom:64px}
  #sidebarLeft{
    position:fixed;left:0;top:0;bottom:0;z-index:400;
    transform:translateX(-100%);transition:transform var(--transition);
    width:var(--sidebar-w)!important;min-width:var(--sidebar-w)!important;
  }
  #sidebarLeft.mobile-open{transform:translateX(0)}
  .sidebar-right{display:none}
  .tab-pane{padding:14px;-webkit-overflow-scrolling:touch}
  #tab-playground{padding:14px}
  .challenge-grid{grid-template-columns:1fr 1fr}
}

/* ══════════════════════════════════════════
   WORD CHAIN & misc
══════════════════════════════════════════ */
#tab-wordchain{padding:16px}

/* Fix word-chain sticky validation button on mobile:
   tab-pane.active is flex-column → sticky inside flex child breaks.
   Solution: make tab-wordchain block (not flex) so overflow-y + sticky work,
   and ensure .wc-actions sticks above the 64px mobile bottom nav.
*/
@media(max-width:768px){
  #tab-wordchain.active{
    display:block!important;overflow-y:auto;overflow-x:hidden;-webkit-overflow-scrolling:touch;
  }
  #tab-wordchain .wc-container{
    max-width:100%;
    padding-bottom:calc(24px + env(safe-area-inset-bottom, 0px));
    overflow-x:hidden;
  }
  #tab-wordchain .wc-answer-zone{scroll-margin-top:12px}
  #tab-wordchain .wc-question{
    margin-bottom:14px;
  }
  #tab-wordchain .wc-schema-multi{
    gap:6px;
    margin-bottom:12px;
  }
  #tab-wordchain .wc-bank{
    display:grid;
    grid-template-columns:repeat(3,minmax(0,1fr));
    gap:8px;
    margin-bottom:12px;
    align-items:stretch;
  }
  #tab-wordchain .wc-tile-bank{
    width:100%;
    min-height:44px;
    padding:8px 6px;
    font-size:13px;
    display:flex;
    align-items:center;
    justify-content:center;
    text-align:center;
    white-space:normal;
    line-height:1.15;
    word-break:break-word;
  }
  #tab-wordchain .wc-actions{
    position:static!important;
    display:grid;
    grid-template-columns:minmax(0,1fr) minmax(0,1.45fr);
    gap:10px;
    background:transparent;
    border-top:none;
    box-shadow:none;
    padding:14px 0 calc(12px + env(safe-area-inset-bottom,0px));
    margin:12px 0 0;
    box-sizing:border-box;
  }
  #tab-wordchain .wc-btn{
    width:100%;
    min-height:48px;
  }
  #tab-wordchain .wc-question,
  #tab-wordchain .wc-answer-zone,
  #tab-wordchain .wc-bank,
  #tab-wordchain .wc-sql-preview,
  #tab-wordchain .wc-live-results{
    max-width:100%;
    overflow-x:hidden;
    box-sizing:border-box;
  }
}

/* ══════════════════════════════════════════
   ANIMATIONS
══════════════════════════════════════════ */
@keyframes tipBounce{
  from{transform:translateY(0)}
  to{transform:translateY(-6px)}
}
@keyframes fadeIn{
  from{opacity:0;transform:translateY(8px)}
  to{opacity:1;transform:translateY(0)}
}
.fade-in{animation:fadeIn .3s ease}

/* ══════════════════════════════════════════
   SIDEBAR ACCORDIONS (progressive disclosure)
══════════════════════════════════════════ */
.sidebar-section {
  border-top: 1px solid var(--border);
  margin: 0;
}
.sidebar-section summary.sidebar-section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px 16px;
  font-size: 11px;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .8px;
  color: var(--muted);
  cursor: pointer;
  user-select: none;
  list-style: none;
  gap: 6px;
}
.sidebar-section summary::-webkit-details-marker { display: none; }
.sidebar-section summary.sidebar-section-header::after {
  content: '▸';
  margin-left: auto;
  transition: transform 0.25s ease, color 0.25s ease;
  font-size: 14px;
  color: var(--muted);
  flex-shrink: 0;
}
.sidebar-section[open] summary.sidebar-section-header::after {
  transform: rotate(90deg);
  color: var(--accent2);
}
.sidebar-section[open] {
  background: rgba(108,99,255,0.02);
}
.sidebar-section-body {
  padding: 4px 12px 12px;
}
.sidebar-section-count {
  background: var(--surface2);
  border-radius: 10px;
  padding: 1px 7px;
  font-size: 10px;
  color: var(--muted2);
}

/* ══════════════════════════════════════════
   CHALLENGE TIER GROUPS (progressive disclosure)
══════════════════════════════════════════ */
.challenge-grouped { padding: 0; }
.tier-group {
  border-bottom: 1px solid var(--border);
  margin-bottom: 0;
  transition: opacity 0.2s ease;
}
.tier-group-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 16px;
  font-weight: 700;
  font-size: 13px;
  cursor: pointer;
  user-select: none;
  list-style: none;
  color: var(--text);
  background: var(--surface);
  transition: background 0.2s ease;
}
.tier-group-header::-webkit-details-marker { display: none; }
.tier-group-header::after {
  content: '▸';
  font-size: 14px;
  color: var(--muted);
  transition: transform 0.25s ease, color 0.25s ease;
  flex-shrink: 0;
  margin-left: 8px;
}
.tier-group[open] > .tier-group-header::after {
  transform: rotate(90deg);
  color: var(--accent2);
}
.tier-group:not([open]) .tier-group-header {
  background: var(--surface2);
  border-radius: var(--radius-sm);
  margin: 2px 0;
}
.tier-group[open] .tier-group-body {
  padding: 12px;
  background: var(--bg);
  animation: fadeIn 0.2s ease;
}
.tier-group-count {
  font-size: 11px;
  color: var(--muted2);
  background: var(--surface2);
  padding: 2px 8px;
  border-radius: 10px;
}

/* ══════════════════════════════════════════
   FOCUS MODE (challenge selected)
══════════════════════════════════════════ */
/* Focus mode: hide challenge list, maximize editor space */
.playground-focus-mode .challenge-grouped { display: none; }
.playground-focus-mode #challengeGrid { display: none; }
.playground-focus-mode .challenge-header { display: none; }

/* Focus mode: grow the SQL editor */
.playground-focus-mode .editor-wrap { min-height: 260px; }
@media(max-width:768px) {
  .playground-focus-mode .editor-wrap { min-height: 180px; }
}

/* Back button — visible only in focus mode */
.playground-back-btn {
  display: none;
  align-items: center;
  gap: 8px;
  background: var(--surface);
  border: 1px solid var(--border2);
  border-radius: var(--radius-sm);
  color: var(--accent);
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  padding: 9px 16px;
  margin-bottom: 12px;
  transition: all 0.15s ease;
  width: 100%;
  justify-content: flex-start;
  box-sizing: border-box;
  max-width: 100%;
}
.playground-back-btn::before { content: '←'; font-size: 16px; }
.playground-back-btn:hover {
  background: var(--surface2);
  border-color: var(--accent);
  color: var(--accent);
}
.playground-focus-mode .playground-back-btn { display: inline-flex; }

/* ══════════════════════════════════════════
   GUIDE BAR (persistent companion)
══════════════════════════════════════════ */
.guide-bar {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 20px;
  background: linear-gradient(90deg, rgba(108,99,255,0.08) 0%, transparent 100%);
  border-bottom: 1px solid rgba(108,99,255,0.15);
  font-size: 12px;
  color: var(--muted2);
  flex-shrink: 0;
  transition: opacity 0.3s;
}
.guide-icon { font-size: 14px; flex-shrink: 0; }
.guide-text { flex: 1; line-height: 1.4; }
.guide-dismiss {
  background: none; border: none;
  color: var(--muted); cursor: pointer;
  font-size: 16px; padding: 2px 6px;
  opacity: 0.6; transition: opacity 0.2s;
  flex-shrink: 0;
}
.guide-dismiss:hover { opacity: 1; }

/* ══════════════════════════════════════════
   TABLE VIEWER — left panel in immersive mode
══════════════════════════════════════════ */
.table-viewer{
  display:flex;flex-direction:column;gap:0;overflow:hidden;
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius);min-height:0;
}
.table-viewer__header{
  display:flex;align-items:center;gap:8px;
  padding:8px 12px;
  border-bottom:1px solid var(--border);
  background:var(--surface);flex-shrink:0;
}
.table-viewer__header span{
  font-size:12px;font-weight:700;color:var(--accent2);font-family:monospace;
}
.table-viewer__tabs{
  display:flex;gap:0;flex-shrink:0;
  border-bottom:1px solid var(--border);overflow-x:auto;
}
.table-viewer__tab{
  flex:none;padding:6px 12px;font-size:11px;font-weight:600;
  background:none;border:none;color:var(--muted);cursor:pointer;
  border-bottom:2px solid transparent;transition:all var(--transition);
  white-space:nowrap;font-family:monospace;
}
.table-viewer__tab:hover{color:var(--text);background:var(--surface)}
.table-viewer__tab--active{color:var(--accent2);border-bottom-color:var(--accent)}
.table-viewer__body{
  flex:1;overflow:auto;font-size:12px;min-height:0;
  max-height:280px;
}
.table-viewer__body table{width:100%;border-collapse:collapse;font-family:'JetBrains Mono','Fira Code',monospace}
.table-viewer__body th{
  background:var(--surface2);padding:6px 10px;
  text-align:left;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.3px;color:var(--accent2);
  border-bottom:1px solid var(--border);white-space:nowrap;
  position:sticky;top:0;z-index:1;
}
.table-viewer__body td{
  padding:5px 10px;border-bottom:1px solid var(--border);
  color:var(--muted2);white-space:nowrap;font-size:11px;
}
.table-viewer__body tr:hover td{background:var(--surface)}
.table-viewer__empty{
  display:flex;align-items:center;justify-content:center;
  height:100%;color:var(--muted);font-size:13px;padding:20px;text-align:center;
  flex:1;
}

/* Toggle button active state */
.btn-active{background:var(--accent)!important;color:#fff!important}

/* Table chip selected state */
.table-chip.table-selected{
  border-color:var(--accent);background:rgba(108,99,255,0.12);
}

/* ── Syntax indicator dot ── */
.syntax-dot{
  width:10px;height:10px;border-radius:50%;
  display:inline-block;flex-shrink:0;
  transition:background 0.3s ease, box-shadow 0.3s ease;
}
.syntax-dot--ok{background:var(--success);box-shadow:0 0 6px rgba(52,211,153,0.5)}
.syntax-dot--err{background:var(--danger);box-shadow:0 0 6px rgba(239,68,68,0.4)}
.syntax-dot--idle{background:var(--surface3)}

/* ── Live mode toggle ── */
.live-toggle{
  display:flex;align-items:center;gap:6px;font-size:11px;
  color:var(--muted);cursor:pointer;user-select:none;
}
.live-toggle input{accent-color:var(--accent)}
.live-toggle--active{color:var(--accent2)}

/* ══════════════════════════════════════════
   SANDBOX PEDAGOGY — SQL pipeline visualization
══════════════════════════════════════════ */
.spd-pipeline{
  margin-top:16px;padding:16px;
  background:var(--bg2);border:1px solid var(--border);
  border-radius:var(--radius);
}
.spd-title{
  font-size:13px;font-weight:700;color:var(--accent2);
  margin-bottom:12px;letter-spacing:0.2px;
}
.spd-steps{
  display:flex;flex-wrap:wrap;gap:6px;align-items:center;
  margin-bottom:14px;
}
.spd-step{
  display:flex;align-items:center;gap:6px;
  padding:6px 10px;border-radius:var(--radius-sm);
  background:var(--surface);border:1px solid var(--border);
  animation:spd-fade-in 0.3s ease both;
  font-size:12px;
}
.spd-step__icon{font-size:14px;flex-shrink:0}
.spd-step__content{display:flex;flex-direction:column;gap:1px}
.spd-step__label{
  font-family:'JetBrains Mono','Fira Code',monospace;
  font-size:11px;font-weight:600;color:var(--text);
}
.spd-step__desc{font-size:10px;color:var(--muted)}
.spd-step__arrow{color:var(--muted);font-size:14px;flex-shrink:0}
.spd-step--where{border-color:rgba(251,191,36,0.3);background:rgba(251,191,36,0.06)}
.spd-step--select{border-color:rgba(108,99,255,0.3);background:rgba(108,99,255,0.06)}
.spd-step--order{border-color:rgba(52,211,153,0.3);background:rgba(52,211,153,0.06)}
.spd-step--limit{border-color:rgba(239,68,68,0.3);background:rgba(239,68,68,0.06)}
.spd-step--group{border-color:rgba(139,133,255,0.3);background:rgba(139,133,255,0.06)}

@keyframes spd-fade-in{
  from{opacity:0;transform:translateY(4px)}
  to{opacity:1;transform:translateY(0)}
}

/* Mini table */
.spd-table-wrap{
  overflow-x:auto;max-height:200px;border-radius:var(--radius-sm);
  border:1px solid var(--border);
}
.spd-table{
  width:100%;border-collapse:collapse;
  font-family:'JetBrains Mono','Fira Code',monospace;font-size:11px;
}
.spd-table th{
  background:var(--surface2);padding:5px 8px;
  text-align:left;font-size:10px;font-weight:700;
  text-transform:uppercase;letter-spacing:.3px;
  border-bottom:1px solid var(--border);
  position:sticky;top:0;z-index:1;color:var(--muted);
  white-space:nowrap;
}
.spd-table td{
  padding:4px 8px;border-bottom:1px solid var(--border);
  color:var(--muted2);white-space:nowrap;
}
.spd-table tr:hover td{background:var(--surface)}
.spd-col-kept{color:var(--accent2)!important;font-weight:700}
.spd-col-dimmed{opacity:0.3}
.spd-row-cut td{opacity:0.25;text-decoration:line-through}
.spd-row-truncated td{
  text-align:center;color:var(--danger);
  font-style:italic;font-size:10px;padding:6px;
  border:none;
}

/* ══════════════════════════════════════════
   MOBILE — comprehensive improvements
   (appended to existing @media(max-width:768px) base rules above)
══════════════════════════════════════════ */

/* Autocomplete on touch devices — keep visible, larger touch targets */
@media(hover:none) and (pointer:coarse){
  .ac-dropdown .ac-item{padding:10px 14px;font-size:14px;min-height:40px}
}

@media(max-width:768px){
  /* Topnav: 2 rows on mobile — row 1: logo+profile, row 2: mode-switch */
  .topnav{
    flex-wrap:wrap;
    padding:env(safe-area-inset-top,0px) 12px 0 56px;
    gap:0;
    min-height:auto;
  }
  .topnav-logo{flex:1}
  .topnav-right{margin-left:auto;gap:6px}
  .mode-switch{
    order:10;width:100%;
    margin:6px 0 8px;padding:3px;
    overflow-x:auto;-webkit-overflow-scrolling:touch;
    scrollbar-width:none;justify-content:center;
  }
  .mode-switch::-webkit-scrollbar{display:none}

  /* Safe area sides */
  .tab-pane{padding-left:max(14px,env(safe-area-inset-left));padding-right:max(14px,env(safe-area-inset-right))}

  /* Sandbox: override inline height for mobile */
  #tab-sandbox .editor-wrap{height:160px!important}

  /* Fondamentaux: single column */
  .fondamentaux-grid{grid-template-columns:1fr}
  .fondamental-code{font-size:12px;overflow-x:auto;-webkit-overflow-scrolling:touch}

  /* Challenge header: stack vertically */
  .challenge-header{flex-direction:column;align-items:flex-start;gap:8px}

  /* Filter bar: horizontal scroll on mobile */
  .filter-bar{flex-wrap:nowrap;overflow-x:auto;padding-bottom:4px;-webkit-overflow-scrolling:touch}
  .filter-btn{flex-shrink:0}

  /* Back button: full-width tap target */
  .playground-back-btn{width:100%;justify-content:center;padding:12px 16px;margin-bottom:12px}

  /* Active challenge inner card: tighter padding */
  #activeChallenge,
  #tab-playground,
  #activeChallenge > div:last-child,
  .editor-wrap,
  .editor-actions,
  .results,
  #tableViewerZone,
  .table-viewer{
    max-width:100%;
    min-width:0;
    box-sizing:border-box;
  }
  #tab-playground,
  #activeChallenge{overflow-x:hidden}
  #activeChallenge > div:last-child{padding:14px!important;overflow-x:hidden}

  /* Editor: prevent iOS double-tap zoom (font < 16px triggers it) */
  .sql-editor{font-size:16px!important;min-height:140px}
  .editor-highlight{font-size:16px!important}
  .editor-wrap{min-height:140px;overflow:hidden}
  .sql-editor,
  .editor-highlight{max-width:100%;box-sizing:border-box}

  /* Editor actions: compact, single-line friendly on large phones */
  .editor-actions{
    gap:4px;
    display:grid;
    grid-template-columns:repeat(6,minmax(0,1fr));
    align-items:stretch;
    overflow-x:hidden;
  }
  .editor-actions > *{min-width:0}
  .btn{
    padding:8px 6px;
    font-size:11px;
    justify-content:center;
    white-space:nowrap;
    overflow:hidden;
    text-overflow:ellipsis;
    min-height:40px;
  }
  .btn-clear{padding:8px 6px}

  /* Hide verbose button text on very tight layouts */
  .live-toggle{display:none}

  /* Results: full height on mobile */
  .results{max-height:200px}

  /* Table viewer: compact */
  .table-viewer__body{max-height:160px}

  /* Sandbox: schema 1 col */
  #fullSchema{columns:1!important}

  /* Missions: single col */
  #missionSelect{grid-template-columns:1fr!important}

  /* Leaderboard: hide non-critical columns */
  .lb-table th:nth-child(3),.lb-table td:nth-child(3){display:none}
  .lb-table th:nth-child(6),.lb-table td:nth-child(6){display:none}

  /* Bottom nav: safe area on iPhone X+ */
  .mobile-bottom-nav{padding-bottom:max(6px,env(safe-area-inset-bottom))}

  /* Pro modal: full-width on mobile */
  #proUpgradeModal .modal-box{padding:20px 16px}

  /* Tier groups: tighter */
  .tier-group[open] .tier-group-body{padding:8px}

  /* SPD pipeline: wrap */
  .spd-steps{gap:4px}
  .spd-step{font-size:11px;padding:5px 8px}

  /* Fondamentaux tab: less padding */
  #tab-fondamentaux{padding:14px;gap:12px}

  /* Topbar buttons: smaller */
  .topbar-btn{padding:5px 8px;font-size:12px}
  .topbar-btn.auth-btn{padding:0 10px}
  .profile-badge{padding:4px 8px 4px 5px}
  .profile-badge-xp{font-size:11px}

  /* Omar: move above 64px bottom nav so button is visible + tappable */
  .omar-panel{bottom:94px;right:12px}
  .omar-chat{width:calc(100vw - 28px);max-height:50vh}

  /* ── Mobile: locked steps masquées ── */
  .biz-step.locked{display:none!important}
  /* ── Fix aide-btn position sur mobile ── */
  .aide-btn{bottom:96px!important;right:12px!important;left:auto!important}
  body[data-active-tab="wordchain"] .omar-panel{bottom:154px;right:12px}
  body[data-active-tab="wordchain"] .aide-btn{display:none!important}

  /* ── Focus mode: hide clutter when editing SQL ── */
  body.editor-focus,
  body.editor-focus .app-body,
  body.editor-focus .tab-pane,
  body.editor-focus #tab-playground,
  body.editor-focus #activeChallenge{
    overflow-x:hidden!important;
    overscroll-behavior-x:none;
    touch-action:pan-y;
  }
  body.editor-focus .topnav{display:none!important}
  body.editor-focus .mobile-bottom-nav{display:none!important}
  body.editor-focus .intro-bottom-nav{display:none!important}
  body.editor-focus .guide-bar{display:none!important}
  body.editor-focus .omar-panel{display:none!important}
  body.editor-focus .aide-btn{display:none!important}
  body.editor-focus .app-body{margin-bottom:0}
  body.editor-focus #notifCardContainer,
  body.editor-focus #activeChallengeContext,
  body.editor-focus #challengeTableHints{display:none!important}
  body.editor-focus #challengeDescBody{display:block!important}
  body.editor-focus #activeChallenge > div:last-child{
    margin-top:0;
    padding:12px!important;
    border-left:none;
    border-right:none;
    border-radius:0;
  }
  body.editor-focus .playground-back-btn{
    position:sticky;
    top:max(8px, env(safe-area-inset-top));
    z-index:20;
    background:rgba(15,23,42,0.96);
    backdrop-filter:blur(10px);
  }
  body.editor-focus .biz-quote,
  body.editor-focus .biz-header,
  body.editor-focus .biz-scope,
  body.editor-focus .biz-step .biz-guidance,
  body.editor-focus .ch-card-full .ch-desc,
  body.editor-focus #challengeContext{opacity:.2;max-height:40px;overflow:hidden;transition:all .2s}
  body.editor-focus .editor-wrap{min-height:200px}
  body.editor-focus .editor-actions{
    position:sticky;
    bottom:0;
    z-index:18;
    background:linear-gradient(180deg, rgba(15,23,42,0.0) 0%, rgba(15,23,42,0.92) 18%, rgba(15,23,42,0.98) 100%);
    padding-top:12px;
    padding-bottom:calc(10px + env(safe-area-inset-bottom, 0px));
  }
  body.editor-focus .results{max-height:none}
  body.editor-focus .biz-step.locked{display:none!important}
  .focus-exit-btn{display:none;position:fixed;top:8px;right:8px;z-index:9000;
    padding:8px 14px;border-radius:8px;border:1px solid var(--border);
    background:var(--surface);color:var(--text);font-size:12px;font-weight:600;cursor:pointer}
  body.editor-focus .focus-exit-btn{display:block}
}

@media(max-width:480px){
  .mobile-bottom-nav{gap:2px;padding:6px 6px max(6px,env(safe-area-inset-bottom))}
  .mob-nav-btn{padding:6px 0;min-height:42px;font-size:9px;gap:1px}
  .mob-nav-btn .icon{font-size:16px}
  .editor-actions{grid-template-columns:repeat(3,minmax(0,1fr))}
  #tab-wordchain .wc-bank{grid-template-columns:repeat(2,minmax(0,1fr));gap:6px}
  #tab-wordchain .wc-tile-bank{min-height:40px;padding:7px 6px;font-size:12.5px}
  /* Single-column challenge grid on phones < 480px */
  .challenge-grid{grid-template-columns:1fr}

  /* Tighter tab pane padding */
  .tab-pane{padding:10px}
  #tab-playground{padding:10px}
  #tab-fondamentaux{padding:10px}

  /* Smaller topnav logo */
  .topnav-logo{font-size:13px;gap:4px}

  /* Larger touch targets for ch-cards */
  .ch-card{padding:12px;min-height:80px}

  /* Sandbox pedagogy: hide on very small to save space */
  #sandboxPedagogy{display:none!important}
}