/* ═══════════════════════════════════════════════════
   KeyQuest 2.0 — Full Design System
   Accessible · Game-quality · K-2 Friendly
═══════════════════════════════════════════════════ */

/* ── Token System ── */
:root {
  --c-primary:     #6C63FF;
  --c-primary-dk:  #4B44CC;
  --c-secondary:   #FF6B9D;
  --c-accent:      #FFD93D;
  --c-green:       #6BCB77;
  --c-green-dk:    #27AE60;
  --c-red:         #FF6B6B;
  --c-orange:      #FFA94D;
  --c-blue:        #4FC3F7;
  --c-purple:      #9B59B6;
  --c-teacher:     #2ECC71;
  --c-teacher-dk:  #27AE60;

  --c-bg:          #F0EFFE;
  --c-card:        #FFFFFF;
  --c-border:      #E0DEFF;
  --c-text:        #2D2D3A;
  --c-text-lt:     #6B6B80;
  --c-key-def:     #ECEBFF;
  --c-key-home:    #C8C4FF;
  --c-key-target:  #FFD93D;
  --c-key-ok:      #6BCB77;
  --c-key-wrong:   #FF6B6B;

  --f-display: 'Fredoka One', cursive;
  --f-body:    'Nunito', sans-serif;
  --f-dyslexia:'Lexend', sans-serif;

  --r-sm:  8px;
  --r-md:  16px;
  --r-lg:  24px;
  --r-xl:  40px;
  --r-pill:999px;

  --sh-sm: 0 2px 8px  rgba(108,99,255,.12);
  --sh-md: 0 8px 24px rgba(108,99,255,.18);
  --sh-lg: 0 16px 48px rgba(108,99,255,.22);

  --transition: 0.18s ease;
}

/* ── High Contrast Mode ── */
body.high-contrast {
  --c-bg:       #000;
  --c-card:     #111;
  --c-border:   #fff;
  --c-text:     #fff;
  --c-text-lt:  #ccc;
  --c-key-def:  #222;
  --c-key-home: #333;
  --c-primary:  #FFD700;
  --c-primary-dk:#FFD700;
  --c-accent:   #FFD700;
  --c-green:    #00FF88;
  --c-green-dk: #00FF88;
}
body.high-contrast .btn-student { background: #FFD700 !important; color: #000 !important; }
body.high-contrast .landing-bg  { background: #000 !important; }
body.high-contrast .kb-key      { color: #fff; border: 1px solid #555; }

/* ── Dyslexia Font Mode ── */
body.dyslexia-font,
body.dyslexia-font * { font-family: var(--f-dyslexia) !important; letter-spacing: 0.05em; line-height: 1.7; }

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html, body { height: 100%; overflow: hidden; }
body { font-family: var(--f-body); background: var(--c-bg); color: var(--c-text); font-size: 17px; line-height: 1.5; }

#app { width: 100%; height: 100vh; position: relative; overflow: hidden; }

/* ── Screens ── */
.screen {
  position: absolute; inset: 0;
  opacity: 0; pointer-events: none;
  transform: translateY(12px);
  transition: opacity .28s ease, transform .28s ease;
  overflow-y: auto; overflow-x: hidden;
}
.screen.active { opacity: 1; pointer-events: all; transform: translateY(0); }

/* ══════════════════════════════════════════════
   LANDING
══════════════════════════════════════════════ */
.landing-bg {
  position: fixed; inset: 0; z-index: 0;
  background: linear-gradient(145deg, #6C63FF 0%, #9B59B6 45%, #FF6B9D 100%);
  overflow: hidden;
}
.bubble {
  position: absolute; border-radius: 50%;
  background: rgba(255,255,255,.12);
  animation: bubbleFloat 6s ease-in-out infinite;
}
.b1 { width: 200px; height: 200px; top: -60px; left: -40px; animation-delay: 0s; }
.b2 { width: 140px; height: 140px; top: 20%; right: -30px; animation-delay: 1.5s; }
.b3 { width: 100px; height: 100px; bottom: 15%; left: 10%; animation-delay: 3s; }
.b4 { width: 180px; height: 180px; bottom: -50px; right: 5%; animation-delay: 0.8s; }
@keyframes bubbleFloat {
  0%,100% { transform: translateY(0) scale(1); }
  50% { transform: translateY(-20px) scale(1.05); }
}

.landing-content {
  position: relative; z-index: 1;
  min-height: 100vh;
  display: flex; flex-direction: column; align-items: center; justify-content: center;
  padding: 40px 24px; text-align: center; gap: 24px;
}
.logo-kb { font-size: 88px; animation: logoFloat 2.5s ease-in-out infinite; }
@keyframes logoFloat { 0%,100%{transform:translateY(0)} 50%{transform:translateY(-14px)} }
.logo-title { font-family: var(--f-display); font-size: clamp(52px,12vw,88px); color: #fff; text-shadow: 0 4px 20px rgba(0,0,0,.25); }
.logo-sub { font-size: clamp(15px,3vw,20px); color: rgba(255,255,255,.88); margin-top: 4px; }

.landing-chars { display: flex; gap: 24px; font-size: 52px; }
.lc { display: inline-block; animation: charFloat 3s ease-in-out infinite; }
.lc1{animation-delay:0s} .lc2{animation-delay:.5s} .lc3{animation-delay:1s} .lc4{animation-delay:1.5s}
@keyframes charFloat { 0%,100%{transform:translateY(0) rotate(-4deg)} 50%{transform:translateY(-18px) rotate(4deg)} }

.landing-btns { display: flex; flex-direction: column; gap: 16px; width: 100%; max-width: 360px; }

/* ══════════════════════════════════════════════
   BUTTONS
══════════════════════════════════════════════ */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: 10px;
  padding: 16px 32px; border: none; border-radius: var(--r-pill);
  font-family: var(--f-body); font-size: 20px; font-weight: 800;
  cursor: pointer; transition: transform var(--transition), box-shadow var(--transition);
  min-height: 56px;
}
.btn:hover  { transform: translateY(-3px); box-shadow: var(--sh-md); }
.btn:active { transform: translateY(1px);  box-shadow: var(--sh-sm); }
.btn-icon   { font-size: 22px; }

.btn-student     { background: linear-gradient(135deg, #FFD93D, #FFA94D); color: #2D2D3A; box-shadow: 0 6px 20px rgba(255,165,0,.4); }
.btn-teacher     { background: rgba(255,255,255,.18); color: #fff; border: 2px solid rgba(255,255,255,.45); backdrop-filter: blur(8px); }
.btn-teacher-solid { background: linear-gradient(135deg, var(--c-teacher), var(--c-teacher-dk)); color: #fff; border-radius: var(--r-md); font-size: 16px; padding: 12px 24px; min-height: 44px; }
.btn-ghost       { background: var(--c-key-def); color: var(--c-primary); border-radius: var(--r-md); font-size: 16px; padding: 10px 20px; min-height: 44px; }
.btn-next        { background: linear-gradient(135deg, var(--c-green), var(--c-green-dk)); color: #fff; border-radius: var(--r-md); font-size: 18px; min-height: 52px; }
.btn-class-mode  { background: rgba(255,255,255,.2); color: #fff; border: 1.5px solid rgba(255,255,255,.4); border-radius: var(--r-md); font-size: 15px; padding: 8px 18px; min-height: 38px; }
.btn-sm          { font-size: 14px; padding: 8px 16px; min-height: 38px; }

.btn-back {
  display: inline-flex; align-items: center; gap: 6px;
  background: none; border: 2px solid var(--c-border); border-radius: var(--r-md);
  padding: 8px 16px; font-size: 15px; font-weight: 700; cursor: pointer; color: var(--c-primary);
  transition: background var(--transition);
}
.btn-back:hover { background: var(--c-border); }
.btn-back-game {
  background: rgba(255,255,255,.9); border: none; padding: 8px 16px;
  border-radius: var(--r-md); font-size: 14px; font-weight: 700; cursor: pointer; color: var(--c-primary);
  box-shadow: var(--sh-sm);
}
.btn-logout {
  background: rgba(255,255,255,.18); border: 1.5px solid rgba(255,255,255,.35);
  padding: 6px 14px; border-radius: var(--r-md); font-size: 13px; font-weight: 700;
  cursor: pointer; color: #fff; transition: background var(--transition);
}
.btn-logout:hover { background: rgba(255,255,255,.3); }
.btn-icon-sm {
  width: 36px; height: 36px; border-radius: 50%;
  background: rgba(255,255,255,.2); border: 1.5px solid rgba(255,255,255,.3);
  color: #fff; cursor: pointer; font-size: 15px; font-weight: 700;
  display: inline-flex; align-items: center; justify-content: center;
}

/* ══════════════════════════════════════════════
   ROSTER / LOGIN
══════════════════════════════════════════════ */
.roster-header {
  background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
  padding: 16px 24px; display: flex; align-items: center; gap: 16px; flex-wrap: wrap;
}
.roster-header h2 { font-family: var(--f-display); font-size: 24px; color: #fff; flex: 1; }
.roster-class-tabs { display: flex; gap: 8px; flex-wrap: wrap; }
.class-tab-btn {
  padding: 6px 14px; border: 2px solid rgba(255,255,255,.5); border-radius: var(--r-pill);
  background: rgba(255,255,255,.15); color: #fff; font-size: 13px; font-weight: 700; cursor: pointer;
}
.class-tab-btn.active { background: #fff; color: var(--c-primary); }

.roster-body { padding: 24px; }
.roster-hint { text-align: center; font-size: 22px; font-weight: 700; color: var(--c-primary); margin-bottom: 24px; }

.roster-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: 16px; max-width: 900px; margin: 0 auto;
}
.roster-card {
  background: var(--c-card); border: 3px solid var(--c-border);
  border-radius: var(--r-lg); padding: 20px 12px;
  text-align: center; cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.roster-card:hover  { transform: scale(1.06); box-shadow: var(--sh-md); border-color: var(--c-primary); }
.roster-card:active { transform: scale(.98); }
.rc-avatar { font-size: 56px; }
.rc-color-ring { width: 60px; height: 60px; border-radius: 50%; display: flex; align-items: center; justify-content: center; font-size: 36px; }
.rc-name   { font-family: var(--f-display); font-size: 16px; color: var(--c-primary); }

/* ══════════════════════════════════════════════
   PASSCODE
══════════════════════════════════════════════ */
.passcode-wrap {
  max-width: 440px; margin: 60px auto; background: var(--c-card);
  border-radius: var(--r-xl); box-shadow: var(--sh-lg); padding: 40px 32px;
  text-align: center; display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.passcode-avatar { font-size: 72px; animation: logoFloat 2.5s ease-in-out infinite; }
.passcode-title  { font-family: var(--f-display); font-size: 26px; color: var(--c-primary); }
.passcode-hint   { font-size: 16px; color: var(--c-text-lt); }
.passcode-progress { display: flex; gap: 12px; justify-content: center; }
.pc-dot {
  width: 20px; height: 20px; border-radius: 50%;
  border: 3px solid var(--c-primary); background: transparent;
  transition: background .2s;
}
.pc-dot.filled { background: var(--c-primary); }

.passcode-grid {
  display: grid; grid-template-columns: repeat(3,1fr); gap: 12px; width: 100%;
}
.pc-emoji {
  font-size: 44px; padding: 12px; border-radius: var(--r-md); border: 3px solid var(--c-border);
  background: var(--c-bg); cursor: pointer;
  transition: transform .15s, border-color .15s, background .15s;
  user-select: none;
}
.pc-emoji:hover  { transform: scale(1.12); border-color: var(--c-primary); background: var(--c-key-def); }
.pc-emoji:active { transform: scale(.95); }
.pc-emoji.flash-ok   { background: #D4EDDA; border-color: var(--c-green); }
.pc-emoji.flash-bad  { background: #F8D7DA; border-color: var(--c-red); animation: shakeKey .3s ease; }

.passcode-error { background: #FFE5E5; color: var(--c-red); border: 1.5px solid #FFCDD2; border-radius: var(--r-sm); padding: 10px 16px; font-weight: 700; font-size: 15px; }

/* ══════════════════════════════════════════════
   STUDENT HOME
══════════════════════════════════════════════ */
.student-topbar {
  background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
  padding: 12px 20px; display: flex; align-items: center; justify-content: space-between;
}
.student-identity { display: flex; align-items: center; gap: 12px; }
.student-avatar-wrap { position: relative; }
.sh-avatar { font-size: 40px; }
.sh-coins  { position: absolute; bottom: -6px; right: -10px; background: var(--c-accent); border-radius: var(--r-pill); padding: 1px 6px; font-size: 11px; font-weight: 800; color: #333; white-space: nowrap; }
.sh-id     { font-family: var(--f-display); font-size: 18px; color: #fff; }
.student-topbar-right { display: flex; align-items: center; gap: 8px; }

.home-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px; padding: 24px; max-width: 700px; margin: 0 auto;
}
.home-card {
  background: var(--c-card); border-radius: var(--r-lg); padding: 28px 20px;
  text-align: center; cursor: pointer; border: 3px solid var(--c-border);
  transition: transform var(--transition), box-shadow var(--transition), border-color var(--transition);
  display: flex; flex-direction: column; align-items: center; gap: 8px;
}
.home-card:hover  { transform: translateY(-6px); box-shadow: var(--sh-md); }
.home-card:active { transform: translateY(0); }
.hc-icon  { font-size: 52px; }
.hc-label { font-family: var(--f-display); font-size: 20px; color: var(--c-text); }
.hc-sub   { font-size: 13px; color: var(--c-text-lt); }

.home-card-adventure { border-color: var(--c-primary); background: linear-gradient(135deg, #fff 70%, #F0EFFE); }
.home-card-write     { border-color: var(--c-secondary); background: linear-gradient(135deg, #fff 70%, #FFE4EE); }
.home-card-badges    { border-color: var(--c-accent); background: linear-gradient(135deg, #fff 70%, #FFFBE6); }
.home-card-shop      { border-color: var(--c-green); background: linear-gradient(135deg, #fff 70%, #F0FFF4); }

.home-narrative {
  margin: 0 24px 24px; background: linear-gradient(135deg, #FFFDE7, #FFF9C4);
  border: 2px dashed var(--c-accent); border-radius: var(--r-md);
  padding: 14px 20px; text-align: center; max-width: 700px; margin-left: auto; margin-right: auto;
}
#home-narrative-text { font-size: 16px; font-weight: 600; }

/* ══════════════════════════════════════════════
   ADVENTURE MAP
══════════════════════════════════════════════ */
.map-topbar {
  background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
  padding: 12px 20px; display: flex; align-items: center; gap: 16px;
}
.map-title { font-family: var(--f-display); font-size: 22px; color: #fff; flex: 1; }
.map-coins { color: var(--c-accent); font-weight: 800; font-size: 16px; }
.map-body  { padding: 24px; }
.map-path  { display: flex; flex-direction: column; gap: 12px; max-width: 720px; margin: 0 auto; }

/* Level node */
.level-node {
  display: flex; align-items: center; gap: 16px;
  background: var(--c-card); border: 3px solid var(--c-border);
  border-radius: var(--r-xl); padding: 16px 20px;
  cursor: pointer; transition: transform .15s, box-shadow .15s, border-color .15s;
  position: relative;
}
.level-node:hover:not(.ln-locked) { transform: translateX(8px); box-shadow: var(--sh-md); border-color: var(--c-primary); }
.ln-locked { opacity: .5; cursor: not-allowed; }
.ln-done   { border-color: var(--c-green); background: linear-gradient(135deg, #fff 70%, #F0FFF4); }
.ln-current{ border-color: var(--c-primary); background: linear-gradient(135deg, #fff 70%, #F0EFFE); animation: nodePulse 2s ease-in-out infinite; }
@keyframes nodePulse { 0%,100%{box-shadow:var(--sh-sm)} 50%{box-shadow:0 0 20px rgba(108,99,255,.4)} }

.ln-num {
  width: 52px; height: 52px; border-radius: 50%;
  background: var(--c-primary); color: #fff;
  font-family: var(--f-display); font-size: 22px;
  display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.ln-locked .ln-num  { background: #CCC; }
.ln-done   .ln-num  { background: var(--c-green); }

.ln-info { flex: 1; }
.ln-name { font-family: var(--f-display); font-size: 19px; color: var(--c-primary); }
.ln-desc { font-size: 13px; color: var(--c-text-lt); margin-top: 2px; }
.ln-stars{ font-size: 15px; }
.ln-icon { font-size: 28px; }

/* ══════════════════════════════════════════════
   GAME SCREEN
══════════════════════════════════════════════ */
.game-topbar {
  background: linear-gradient(135deg, var(--c-primary), var(--c-purple));
  padding: 10px 16px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.game-meta { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; }
.game-badge-name {
  background: rgba(255,255,255,.2); color: #fff;
  padding: 3px 12px; border-radius: var(--r-pill); font-weight: 800; font-size: 14px;
}
.game-stat { color: #fff; font-weight: 700; font-size: 14px; }

.game-body {
  display: flex; flex-direction: column; align-items: center;
  padding: 16px; gap: 12px; min-height: calc(100vh - 120px);
}

/* Instruction */
.game-instruction {
  background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg);
  padding: 12px 20px; max-width: 640px; width: 100%;
  display: flex; align-items: center; gap: 10px;
}
.gi-icon { font-size: 28px; }
.gi-text { font-size: 18px; font-weight: 700; color: var(--c-primary); flex: 1; }
.gi-speak { background: none; border: none; font-size: 20px; cursor: pointer; padding: 4px; }

/* Prompt box */
.game-prompt-box {
  background: var(--c-card); border: 3px solid var(--c-primary); border-radius: var(--r-lg);
  padding: 20px 28px; max-width: 700px; width: 100%;
  min-height: 80px; display: flex; align-items: center; justify-content: center;
  box-shadow: var(--sh-md);
}
.game-prompt { display: flex; flex-wrap: wrap; gap: 2px; justify-content: center; align-items: center; }
.pc { /* prompt-char */
  font-family: var(--f-display); font-size: clamp(28px, 5vw, 48px);
  padding: 3px 6px; border-radius: var(--r-sm); transition: all .1s; line-height: 1.1;
}
.pc.pending   { color: var(--c-text-lt); }
.pc.current   { color: var(--c-primary); background: var(--c-key-def); border-bottom: 3px solid var(--c-primary); animation: pcBlink 1s ease-in-out infinite; }
.pc.correct   { color: var(--c-green); }
.pc.wrong-char{ color: var(--c-red); background: #FFE5E5; text-decoration: line-through; }
.pc.space-char{ width: 24px; }
@keyframes pcBlink { 0%,100%{background:var(--c-key-def)} 50%{background:#DDD8FF} }

/* Finger guide */
.finger-guide { background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg); padding: 16px 20px; max-width: 540px; width: 100%; }
.fg-hands  { display: flex; align-items: flex-end; justify-content: center; gap: 16px; }
.fg-hand   { display: flex; gap: 4px; }
.fg-finger {
  width: 42px; height: 52px; border-radius: 8px 8px 0 0;
  background: var(--c-key-def); border: 2px solid var(--c-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 13px; font-weight: 800; color: var(--c-text-lt);
  transition: background .2s;
}
.fg-finger.fg-index  { background: var(--c-key-home); }
.fg-finger.active    { background: var(--c-key-target) !important; color: #333; transform: translateY(-6px); }
.fg-thumb {
  width: 80px; height: 28px; border-radius: 4px;
  background: var(--c-key-def); border: 2px solid var(--c-border);
  display: flex; align-items: center; justify-content: center;
  font-size: 11px; font-weight: 700; color: var(--c-text-lt); align-self: flex-end;
}

/* Keyboard */
.keyboard-wrap {
  background: #2A2A38; border-radius: var(--r-lg); padding: 14px;
  max-width: 740px; width: 100%; box-shadow: 0 8px 32px rgba(0,0,0,.35);
}
.kb-row   { display: flex; justify-content: center; gap: 4px; margin-bottom: 4px; }
.kb-key   {
  display: flex; align-items: center; justify-content: center;
  min-width: 44px; height: 44px;
  background: var(--c-key-def); border-radius: 7px;
  font-family: var(--f-body); font-size: 14px; font-weight: 800; color: var(--c-text);
  border-bottom: 3px solid #C5C2E8;
  transition: background .12s, transform .1s, box-shadow .12s;
  user-select: none; position: relative;
}
.kb-key.home-row { background: var(--c-key-home); border-bottom-color: #9B97D0; }
.kb-key.target-key {
  background: var(--c-key-target) !important; border-bottom-color: #C9A500 !important;
  animation: keyPulse .8s ease-in-out infinite; box-shadow: 0 0 16px rgba(255,217,61,.7); transform: scale(1.1);
}
.kb-key.pressed-ok  { background: var(--c-key-ok) !important; border-bottom-color: #4CAF50 !important; transform: scale(.95) translateY(2px); border-bottom-width: 1px; }
.kb-key.pressed-bad { background: var(--c-key-wrong) !important; color: #fff !important; animation: shakeKey .3s ease; }
.kb-key.dimmed { opacity: .22; }
.kb-key.wide-tab  { min-width: 66px; font-size: 11px; }
.kb-key.wide-caps { min-width: 78px; font-size: 11px; }
.kb-key.wide-shift{ min-width: 96px; font-size: 11px; }
.kb-key.wide-space{ min-width: 240px; }
.kb-key.wide-enter{ min-width: 78px; font-size: 11px; }

@keyframes keyPulse { 0%,100%{box-shadow:0 0 10px rgba(255,217,61,.5);transform:scale(1.1)} 50%{box-shadow:0 0 24px rgba(255,217,61,.9);transform:scale(1.13)} }
@keyframes shakeKey  { 0%,100%{transform:translateX(0)} 25%{transform:translateX(-5px)} 75%{transform:translateX(5px)} }

.key-dot { position: absolute; top: 3px; right: 3px; width: 7px; height: 7px; border-radius: 50%; }
.kd-l-pinky{ background:#FF6B6B } .kd-l-ring{background:var(--c-orange)} .kd-l-mid{background:var(--c-blue)}
.kd-l-idx  { background:var(--c-green) } .kd-r-idx{background:var(--c-green)} .kd-r-mid{background:var(--c-blue)}
.kd-r-ring { background:var(--c-orange) } .kd-r-pinky{background:#FF6B6B}

/* Progress bar */
.game-progress {
  height: 22px; background: var(--c-border); border-radius: var(--r-pill);
  max-width: 700px; width: 100%; position: relative; overflow: hidden;
}
.gp-fill { height: 100%; background: linear-gradient(90deg, var(--c-primary), var(--c-secondary)); transition: width .4s ease; border-radius: var(--r-pill); }
.gp-label { position: absolute; right: 10px; top: 50%; transform: translateY(-50%); font-size: 12px; font-weight: 700; color: var(--c-primary); }

/* Reward flash */
.reward-flash {
  position: absolute; inset: 0; display: flex; align-items: center; justify-content: center;
  pointer-events: none; z-index: 20;
}
.rf-inner { text-align: center; animation: rfPop .6s ease-out forwards; }
.rf-emoji { font-size: 80px; }
.rf-text  { font-family: var(--f-display); font-size: 40px; color: var(--c-primary); }
@keyframes rfPop { 0%{transform:scale(0) rotate(-10deg);opacity:0} 60%{transform:scale(1.15) rotate(4deg);opacity:1} 100%{transform:scale(1) rotate(0);opacity:1} }

/* Level complete */
.level-complete-overlay {
  position: absolute; inset: 0; background: rgba(108,99,255,.82);
  display: flex; align-items: center; justify-content: center; z-index: 30; backdrop-filter: blur(6px);
}
.lc-card {
  background: var(--c-card); border-radius: var(--r-xl); padding: 40px 36px;
  text-align: center; max-width: 460px; width: 90%;
  display: flex; flex-direction: column; gap: 12px; box-shadow: var(--sh-lg);
  animation: rfPop .5s ease-out;
}
.lc-confetti { position: absolute; pointer-events: none; }
.lc-emoji    { font-size: 72px; }
.lc-title    { font-family: var(--f-display); font-size: 34px; color: var(--c-primary); }
.lc-stars    { font-size: 36px; }
.lc-stats    { display: grid; grid-template-columns: repeat(3,1fr); gap: 10px; }
.lc-stat-box { background: var(--c-bg); border-radius: var(--r-md); padding: 10px 6px; }
.lc-sv       { font-family: var(--f-display); font-size: 26px; color: var(--c-primary); }
.lc-sl       { font-size: 11px; color: var(--c-text-lt); font-weight: 700; }
.lc-coins    { font-family: var(--f-display); font-size: 24px; color: var(--c-green-dk); }
.lc-badge-earned { background: #FFF9E6; border: 2px solid var(--c-accent); border-radius: var(--r-md); padding: 10px 16px; font-weight: 700; }
.lc-btns     { display: flex; flex-direction: column; gap: 10px; }

/* ══════════════════════════════════════════════
   FREE WRITE
══════════════════════════════════════════════ */
.fw-topbar {
  background: linear-gradient(135deg, var(--c-secondary), #C0006E);
  padding: 12px 20px; display: flex; align-items: center; gap: 12px; flex-wrap: wrap;
}
.fw-title { font-family: var(--f-display); font-size: 22px; color: #fff; flex: 1; }
.fw-topstats { display: flex; gap: 12px; color: #fff; font-weight: 700; font-size: 14px; }

.fw-prompt-banner {
  background: #FFF8DC; border-bottom: 3px solid var(--c-accent);
  padding: 12px 20px; display: flex; align-items: center; gap: 10px;
  font-size: 17px; font-weight: 700;
}
.fw-prompt-label { color: var(--c-text-lt); font-size: 13px; white-space: nowrap; }

.fw-editor-area {
  flex: 1; display: flex; flex-direction: column;
  padding: 20px; height: calc(100vh - 220px);
}
.fw-textarea {
  flex: 1; width: 100%; resize: none;
  border: 3px solid var(--c-secondary); border-radius: var(--r-lg);
  padding: 20px 24px; font-family: var(--f-body); font-size: 22px; line-height: 1.7;
  color: var(--c-text); outline: none;
  background: var(--c-card); box-shadow: var(--sh-md);
  transition: border-color .2s;
  min-height: 300px;
}
.fw-textarea:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(108,99,255,.15); }
.fw-textarea::placeholder { color: #CCC; }

.fw-statusbar {
  background: var(--c-card); border-top: 2px solid var(--c-border);
  padding: 12px 20px; display: flex; align-items: center; justify-content: space-between; flex-wrap: wrap; gap: 10px;
}
.fw-stat-row { display: flex; flex-wrap: wrap; gap: 8px; }
.fw-stat-chip {
  background: var(--c-bg); border: 1.5px solid var(--c-border);
  border-radius: var(--r-pill); padding: 5px 12px; font-size: 13px; font-weight: 600;
}
.fw-submit-btn { padding: 10px 24px; font-size: 16px; min-height: 44px; }

/* ══════════════════════════════════════════════
   BADGES + SHOP
══════════════════════════════════════════════ */
.sub-topbar {
  background: linear-gradient(135deg, var(--c-accent), #E69900);
  padding: 12px 20px; display: flex; align-items: center; gap: 16px;
}
.sub-topbar h2 { font-family: var(--f-display); font-size: 24px; color: #333; flex: 1; }

.badges-body { padding: 20px; }
.badges-summary {
  background: var(--c-card); border-radius: var(--r-lg); padding: 16px 20px;
  margin-bottom: 16px; display: flex; gap: 20px; align-items: center; flex-wrap: wrap;
  box-shadow: var(--sh-sm);
}
.badges-grid {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(130px,1fr)); gap: 14px;
}
.badge-card {
  background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg);
  padding: 16px 10px; text-align: center; display: flex; flex-direction: column; align-items: center; gap: 6px;
  transition: transform .15s, box-shadow .15s;
}
.badge-card.earned { border-color: var(--c-accent); background: linear-gradient(135deg,#fff 70%,#FFF9C4); }
.badge-card:hover.earned { transform: scale(1.06); box-shadow: var(--sh-md); }
.badge-card.locked { opacity: .45; filter: grayscale(.5); }
.badge-icon { font-size: 44px; }
.badge-name { font-size: 13px; font-weight: 800; color: var(--c-text); }
.badge-desc { font-size: 11px; color: var(--c-text-lt); }

.shop-body { padding: 20px; }
.shop-section-title { font-family: var(--f-display); font-size: 20px; color: var(--c-primary); margin: 16px 0 10px; }
.shop-balance { font-family: var(--f-display); font-size: 18px; color: var(--c-accent); margin-left: auto; }
.shop-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(120px,1fr)); gap: 12px; margin-bottom: 8px; }
.shop-item {
  background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg);
  padding: 14px 10px; text-align: center;
  display: flex; flex-direction: column; align-items: center; gap: 6px; cursor: pointer;
  transition: transform .15s, box-shadow .15s;
}
.shop-item:hover { transform: scale(1.06); box-shadow: var(--sh-md); border-color: var(--c-green); }
.shop-item.owned { border-color: var(--c-green); background: #F0FFF4; cursor: default; }
.si-icon  { font-size: 38px; }
.si-name  { font-size: 12px; font-weight: 800; }
.si-price { font-size: 13px; font-weight: 700; color: var(--c-green-dk); }
.si-owned { font-size: 12px; color: var(--c-green-dk); font-weight: 700; }

/* ══════════════════════════════════════════════
   TEACHER DASHBOARD
══════════════════════════════════════════════ */
.teacher-topbar {
  background: linear-gradient(135deg, var(--c-teacher-dk), #1A8A4B);
  padding: 12px 20px; display: flex; align-items: center; justify-content: space-between;
}
.tt-title { font-family: var(--f-display); font-size: 24px; color: #fff; }
.tt-right { display: flex; align-items: center; gap: 10px; }

.teacher-tabs {
  display: flex; border-bottom: 2px solid var(--c-border);
  background: var(--c-card); padding: 0 16px; overflow-x: auto;
}
.ttab {
  padding: 12px 18px; border: none; background: none;
  font-family: var(--f-body); font-size: 15px; font-weight: 700;
  cursor: pointer; color: var(--c-text-lt); border-bottom: 3px solid transparent;
  margin-bottom: -2px; white-space: nowrap;
  transition: color .15s, border-color .15s;
}
.ttab.active { color: var(--c-teacher-dk); border-bottom-color: var(--c-teacher); }
.ttab:hover:not(.active) { color: var(--c-text); }

.tpanel { padding: 20px; }
.tpanel.hidden { display: none; }

/* Classroom switcher */
.classroom-switcher, .classroom-switcher-inline {
  display: flex; flex-wrap: wrap; gap: 8px; margin-bottom: 16px;
}
.cs-btn {
  padding: 7px 16px; border: 2px solid var(--c-border); border-radius: var(--r-pill);
  background: var(--c-card); font-size: 14px; font-weight: 700; cursor: pointer;
  transition: background .15s, border-color .15s;
}
.cs-btn.active { background: var(--c-teacher); color: #fff; border-color: var(--c-teacher); }
.cs-btn:hover:not(.active) { border-color: var(--c-teacher); }

/* Overview stats */
.overview-stats {
  display: grid; grid-template-columns: repeat(auto-fill, minmax(160px,1fr)); gap: 14px; margin-bottom: 20px;
}
.ov-stat {
  background: var(--c-card); border-radius: var(--r-lg); padding: 18px 16px; text-align: center;
  border: 2px solid var(--c-border); box-shadow: var(--sh-sm);
}
.ov-val  { font-family: var(--f-display); font-size: 32px; color: var(--c-primary); }
.ov-lbl  { font-size: 12px; color: var(--c-text-lt); font-weight: 700; text-transform: uppercase; margin-top: 4px; }

/* Students table */
.students-toolbar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; margin-bottom: 14px; }
.search-box { flex: 1; min-width: 180px; max-width: 280px; padding: 9px 16px; border: 2px solid var(--c-border); border-radius: var(--r-md); font-size: 15px; font-family: var(--f-body); outline: none; }
.search-box:focus { border-color: var(--c-teacher); }
.students-table-wrap { overflow-x: auto; }
.students-table { width: 100%; border-collapse: collapse; font-size: 14px; }
.students-table th { background: var(--c-bg); padding: 10px 14px; text-align: left; font-weight: 800; color: var(--c-text-lt); font-size: 12px; text-transform: uppercase; border-bottom: 2px solid var(--c-border); }
.students-table td { padding: 10px 14px; border-bottom: 1px solid var(--c-border); vertical-align: middle; }
.students-table tr:hover td { background: var(--c-bg); }
.tbl-act-btn { padding: 5px 12px; background: var(--c-primary); color: #fff; border: none; border-radius: var(--r-sm); font-size: 12px; font-weight: 700; cursor: pointer; }
.tbl-act-btn:hover { opacity: .85; }

/* Student detail panel */
.student-detail-panel {
  margin-top: 20px; background: var(--c-card); border: 2px solid var(--c-border);
  border-radius: var(--r-lg); padding: 24px;
}
.sdp-header { display: flex; justify-content: space-between; align-items: center; margin-bottom: 16px; }
.sdp-header h3 { font-family: var(--f-display); font-size: 22px; color: var(--c-primary); }
.sdp-header button { background: none; border: none; font-size: 20px; cursor: pointer; }

/* Shared form elements */
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 13px; font-weight: 700; color: var(--c-text-lt); text-transform: uppercase; }
.form-input {
  padding: 12px 16px; border: 2.5px solid var(--c-border); border-radius: var(--r-md);
  font-family: var(--f-body); font-size: 17px; font-weight: 700; color: var(--c-text);
  outline: none; transition: border-color .2s, box-shadow .2s;
}
.form-input:focus { border-color: var(--c-primary); box-shadow: 0 0 0 4px rgba(108,99,255,.12); }

.error-box {
  background: #FFE5E5; color: var(--c-red); border: 1.5px solid #FFCDD2;
  border-radius: var(--r-sm); padding: 10px 14px; font-size: 14px; font-weight: 600;
}

/* Login card */
.screen-header { display: flex; align-items: center; gap: 16px; padding: 18px 24px; background: var(--c-card); border-bottom: 2px solid var(--c-border); }
.screen-header h2 { font-family: var(--f-display); font-size: 24px; color: var(--c-primary); }
.login-card {
  max-width: 420px; margin: 60px auto; background: var(--c-card); border-radius: var(--r-xl);
  box-shadow: var(--sh-lg); padding: 40px 36px; display: flex; flex-direction: column; gap: 16px;
}
.login-icon { font-size: 64px; text-align: center; animation: logoFloat 2.5s ease-in-out infinite; }
.login-card h3 { font-family: var(--f-display); font-size: 26px; color: var(--c-primary); text-align: center; }
.login-hint { font-size: 13px; color: var(--c-text-lt); text-align: center; }

/* Teacher panels inner layout */
.panel-grid-3 { display: grid; grid-template-columns: repeat(auto-fill, minmax(180px,1fr)); gap: 14px; margin-bottom: 20px; }
.panel-card {
  background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg);
  padding: 20px 16px; text-align: center; box-shadow: var(--sh-sm);
}

/* Analytics */
.chart-wrap { background: var(--c-card); border-radius: var(--r-lg); padding: 20px; box-shadow: var(--sh-sm); margin-bottom: 16px; }
.chart-title { font-family: var(--f-display); font-size: 18px; color: var(--c-primary); margin-bottom: 12px; }

/* Writing tab */
.prompt-card {
  background: var(--c-card); border: 2px solid var(--c-border); border-radius: var(--r-lg);
  padding: 16px 20px; display: flex; align-items: center; gap: 16px; margin-bottom: 10px;
}
.prompt-text { flex: 1; font-size: 16px; font-weight: 600; }
.prompt-meta { font-size: 12px; color: var(--c-text-lt); }

/* Divider */
.divider { border: none; border-top: 2px solid var(--c-border); margin: 16px 0; }

/* Privacy notice */
.privacy-box {
  background: #F0FFF4; border: 2px solid var(--c-green); border-radius: var(--r-md);
  padding: 16px; display: flex; flex-direction: column; gap: 5px; font-size: 13px; font-weight: 600; color: var(--c-green-dk);
}

/* Created-ID display */
.big-id { font-family: var(--f-display); font-size: 38px; color: var(--c-teacher-dk); letter-spacing: 3px; text-align: center; }
.created-id-box { background: #F0FFF4; border: 2px solid var(--c-green); border-radius: var(--r-md); padding: 20px; display: flex; flex-direction: column; align-items: center; gap: 8px; }

/* Modal */
.modal-backdrop {
  position: fixed; inset: 0; background: rgba(0,0,0,.55);
  display: flex; align-items: center; justify-content: center; z-index: 100; backdrop-filter: blur(4px);
}
.modal-box {
  background: var(--c-card); border-radius: var(--r-xl); padding: 32px;
  max-width: 480px; width: 90%; max-height: 90vh; overflow-y: auto;
  box-shadow: var(--sh-lg); display: flex; flex-direction: column; gap: 14px;
}
.modal-title { font-family: var(--f-display); font-size: 24px; color: var(--c-primary); }
.modal-close { background: none; border: none; font-size: 22px; cursor: pointer; align-self: flex-end; margin-top: -28px; margin-right: -8px; }

/* A11y floating bar */
.a11y-bar {
  position: fixed; bottom: 16px; right: 16px;
  background: var(--c-card); border-radius: var(--r-pill);
  box-shadow: var(--sh-md); padding: 6px 10px;
  display: flex; gap: 6px; z-index: 99;
}
.a11y-btn {
  width: 36px; height: 36px; border-radius: 50%; border: none;
  background: var(--c-bg); cursor: pointer; font-size: 16px; font-weight: 800;
  color: var(--c-primary); transition: background .15s;
}
.a11y-btn:hover { background: var(--c-key-def); }

/* ══════════════════════════════════════════════
   UTILITY
══════════════════════════════════════════════ */
.hidden { display: none !important; }
.text-center { text-align: center; }
.mt-8 { margin-top: 8px; }
.mt-16 { margin-top: 16px; }
.flex-row { display: flex; align-items: center; gap: 10px; }
.tag {
  display: inline-block; padding: 3px 10px; border-radius: var(--r-pill);
  font-size: 12px; font-weight: 700; background: var(--c-key-def); color: var(--c-primary);
}
.tag-green { background: #D4EDDA; color: var(--c-green-dk); }
.tag-red   { background: #F8D7DA; color: #C0392B; }

/* Responsive */
@media (max-width: 580px) {
  .home-grid { grid-template-columns: 1fr 1fr; gap: 10px; padding: 12px; }
  .keyboard-wrap { padding: 6px; }
  .kb-key { min-width: 26px; height: 32px; font-size: 11px; }
  .kb-key.wide-space { min-width: 100px; }
  .lc-card { padding: 24px 16px; }
  .roster-grid { grid-template-columns: repeat(auto-fill, minmax(110px,1fr)); }
  .overview-stats { grid-template-columns: repeat(2,1fr); }
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  *, .lc, .kb-key, .logo-kb, .passcode-avatar { animation: none !important; transition: none !important; }
}