/* ── Reset & Base ──────────────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
  --bg:          #0f0f23;
  --surface:     #1a1a35;
  --card-bg:     #1e1e3f;
  --border:      #2d2d5e;
  --text:        #e8e8f0;
  --text-muted:  #8888aa;
  --accent:      #7c3aed;
  --accent-hover:#6d28d9;
  --success:     #22c55e;
  --warning:     #f59e0b;
  --danger:      #ef4444;
  --blue:        #3b82f6;
  --purple:      #8b5cf6;
  --green:       #10b981;
  --orange:      #f97316;
  --radius:      12px;
  --shadow:      0 4px 24px rgba(0,0,0,.4);
  --font:        'Inter', system-ui, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 16px;
  line-height: 1.6;
  min-height: 100vh;
}

/* ── Typography ─────────────────────────────────────────────────────────────── */
h1,h2,h3,h4 { font-weight: 700; line-height: 1.25; }
h1 { font-size: clamp(1.6rem, 4vw, 2.5rem); }
h2 { font-size: 1.35rem; margin-bottom: .75rem; }
h3 { font-size: 1.1rem; margin-bottom: .5rem; }
a  { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }
code { background: rgba(124,58,237,.15); padding: .1em .4em; border-radius: 4px; font-size: .9em; }
pre  { background: var(--surface); padding: 1rem; border-radius: var(--radius); overflow-x: auto; }

/* ── Container ──────────────────────────────────────────────────────────────── */
.container { width: 100%; max-width: 1100px; margin: 0 auto; padding: 0 1rem; }
.page-narrow { max-width: 680px; margin: 0 auto; }

/* ── Cards ──────────────────────────────────────────────────────────────────── */
.card {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  box-shadow: var(--shadow);
}
.card + .card { margin-top: 1.25rem; }
.mt-2 { margin-top: 1rem; }
.mt-3 { margin-top: 1.5rem; }
.mb-2 { margin-bottom: 1rem; }
.mb-3 { margin-bottom: 1.5rem; }

/* ── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex; align-items: center; justify-content: center; gap: .4rem;
  padding: .55rem 1.2rem;
  border-radius: 8px;
  font-size: .95rem;
  font-weight: 600;
  cursor: pointer;
  border: 2px solid transparent;
  transition: all .18s;
  white-space: nowrap;
  text-decoration: none;
}
.btn:hover { text-decoration: none; }
.btn-primary  { background: var(--accent); color: #fff; border-color: var(--accent); }
.btn-primary:hover { background: var(--accent-hover); border-color: var(--accent-hover); }
.btn-outline  { background: transparent; color: var(--accent); border-color: var(--accent); }
.btn-outline:hover { background: rgba(124,58,237,.12); }
.btn-success  { background: var(--success); color: #fff; border-color: var(--success); }
.btn-danger   { background: var(--danger);  color: #fff; border-color: var(--danger); }
.btn-danger:hover { opacity: .85; }
.btn-lg { padding: .8rem 2rem; font-size: 1.05rem; border-radius: 10px; }
.btn-block { width: 100%; }
.btn-sm { padding: .35rem .75rem; font-size: .85rem; }
.btn[disabled] { opacity: .5; cursor: not-allowed; }

/* ── Badges ─────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block; padding: .2rem .55rem;
  border-radius: 20px; font-size: .75rem; font-weight: 600;
}
.badge-blue    { background: rgba(59,130,246,.2);  color: #93c5fd; }
.badge-purple  { background: rgba(139,92,246,.2);  color: #c4b5fd; }
.badge-green   { background: rgba(16,185,129,.2);  color: #6ee7b7; }
.badge-orange  { background: rgba(249,115,22,.2);  color: #fdba74; }
.badge-gray    { background: rgba(100,100,120,.2); color: #aaa; }
.badge-easy    { background: rgba(34,197,94,.2);   color: #86efac; }
.badge-medium  { background: rgba(245,158,11,.2);  color: #fcd34d; }
.badge-hard    { background: rgba(239,68,68,.2);   color: #fca5a5; }
.badge-active  { background: rgba(34,197,94,.15);  color: var(--success); }
.badge-inactive{ background: rgba(239,68,68,.15);  color: var(--danger); }
.badge-version { background: rgba(124,58,237,.2);  color: #c4b5fd; }

/* ── Alerts ─────────────────────────────────────────────────────────────────── */
.alert { padding: .8rem 1.2rem; border-radius: var(--radius); margin-bottom: 1rem; font-weight: 500; }
.alert-success { background: rgba(34,197,94,.15);  color: var(--success); border: 1px solid rgba(34,197,94,.3); }
.alert-error   { background: rgba(239,68,68,.15);  color: var(--danger);  border: 1px solid rgba(239,68,68,.3); }

/* ── Forms ──────────────────────────────────────────────────────────────────── */
.form-group  { margin-bottom: 1rem; }
.form-label  { display: block; margin-bottom: .35rem; font-size: .9rem; font-weight: 500; color: var(--text-muted); }
.form-input, .form-select, .form-textarea {
  width: 100%; padding: .65rem .9rem;
  background: var(--surface); border: 1.5px solid var(--border);
  color: var(--text); border-radius: 8px;
  font-size: 1rem; font-family: inherit;
  transition: border-color .18s;
}
.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none; border-color: var(--accent);
}
.form-textarea { resize: vertical; min-height: 80px; }
.form-hint { font-size: .8rem; color: var(--text-muted); margin-top: .3rem; }
.form-card { max-width: 760px; }
.form-section { margin-bottom: 1.5rem; border-top: 1px solid var(--border); padding-top: 1rem; }
.form-actions { display: flex; gap: 1rem; flex-wrap: wrap; margin-top: 1.5rem; }

/* ── Tables ─────────────────────────────────────────────────────────────────── */
.table-responsive { overflow-x: auto; }
.table { width: 100%; border-collapse: collapse; font-size: .9rem; }
.table th { padding: .65rem .75rem; text-align: left; color: var(--text-muted);
            font-size: .8rem; text-transform: uppercase; letter-spacing: .04em;
            border-bottom: 1px solid var(--border); }
.table td { padding: .6rem .75rem; border-bottom: 1px solid rgba(45,45,94,.5); vertical-align: middle; }
.table tr:hover td { background: rgba(124,58,237,.05); }
.table-count { font-size: .85rem; color: var(--text-muted); margin-bottom: .75rem; }

/* ── Header ─────────────────────────────────────────────────────────────────── */
.site-header { background: var(--surface); border-bottom: 1px solid var(--border); position: sticky; top: 0; z-index: 100; }
.header-inner { display: flex; align-items: center; justify-content: space-between; height: 56px; }
.logo { font-weight: 800; font-size: 1.2rem; color: var(--text); }
.logo:hover { text-decoration: none; }
.header-nav { display: flex; gap: 1.5rem; }
.header-nav a { font-size: .9rem; font-weight: 500; color: var(--text-muted); }
.header-nav a:hover { color: var(--text); text-decoration: none; }

/* ── Footer ─────────────────────────────────────────────────────────────────── */
.site-footer { border-top: 1px solid var(--border); padding: 1rem 0; text-align: center;
               color: var(--text-muted); font-size: .85rem; margin-top: 3rem; }

/* ── Hero ───────────────────────────────────────────────────────────────────── */
.hero { padding: 4rem 0 3rem; }
.hero-inner { display: grid; grid-template-columns: 1fr auto; align-items: center; gap: 2rem; }
.hero-title { color: var(--text); margin-bottom: 1rem; }
.hero-subtitle { color: var(--text-muted); font-size: 1.1rem; margin-bottom: 1.5rem; max-width: 480px; }
.hero-actions { display: flex; gap: 1rem; flex-wrap: wrap; }
.egg-demo { width: 160px; opacity: .7; }
.how-it-works { padding: 2.5rem 0; }

/* ── NRV Video Hero ─────────────────────────────────────────────────────────── */
.nrv-video-hero { position: relative; width: 100%; min-height: 520px;
                  display: flex; align-items: center; justify-content: center;
                  overflow: hidden; background: #000; }
.nrv-video-bg { position: absolute; inset: 0; width: 100%; height: 100%;
                object-fit: cover; opacity: .55; }
.nrv-video-overlay { position: relative; z-index: 2; text-align: center;
                     padding: 3rem 1rem; max-width: 760px; }
.nrv-video-badge { display: inline-block; font-family: monospace; font-size: .8rem;
                   color: #00ff88; border: 1px solid #00ff88; padding: .3rem .9rem;
                   border-radius: 4px; margin-bottom: 1.25rem; letter-spacing: .12em; }
.nrv-video-title { font-size: clamp(2rem, 5vw, 3.2rem); font-weight: 900;
                   color: #fff; line-height: 1.15; margin-bottom: 1rem;
                   text-shadow: 0 2px 20px rgba(0,0,0,.8); }
.nrv-video-sub { color: rgba(255,255,255,.8); font-size: 1.05rem;
                 margin-bottom: 2rem; line-height: 1.6;
                 text-shadow: 0 1px 8px rgba(0,0,0,.9); }
.nrv-video-actions { display: flex; gap: 1rem; justify-content: center; flex-wrap: wrap; }

/* ── CRT Terminal (Join page) ───────────────────────────────────────────────── */
.crt-wrap { background: #0a0a00; border-radius: 12px; padding: 2rem 2rem 1.5rem;
            border: 2px solid #3a3a00; box-shadow: 0 0 40px rgba(0,255,100,.08),
            inset 0 0 60px rgba(0,0,0,.6); position: relative; }
.crt-wrap::before { content: ''; position: absolute; inset: 0; border-radius: 12px;
  background: repeating-linear-gradient(0deg, transparent, transparent 2px,
    rgba(0,255,100,.025) 2px, rgba(0,255,100,.025) 4px); pointer-events: none; }
.crt-header { font-family: monospace; color: #00ff88; font-size: .8rem;
              letter-spacing: .15em; margin-bottom: .5rem; opacity: .7; }
.crt-title { font-family: monospace; color: #00ff88; font-size: 1.05rem;
             font-weight: bold; letter-spacing: .08em; margin-bottom: 1.5rem;
             text-shadow: 0 0 8px #00ff88; }
.crt-label { font-family: monospace; color: #00ff88; font-size: .85rem;
             display: block; margin-bottom: .4rem; }
.crt-input { background: #000; border: 1px solid #00ff88; color: #00ff88;
             font-family: monospace; font-size: 1.4rem; letter-spacing: .3em;
             text-transform: uppercase; padding: .6rem 1rem; border-radius: 4px;
             width: 100%; text-align: center;
             box-shadow: 0 0 8px rgba(0,255,136,.2); }
.crt-input:focus { outline: none; box-shadow: 0 0 16px rgba(0,255,136,.4); }
.crt-input::placeholder { color: rgba(0,255,136,.3); letter-spacing: .3em; }
.crt-btn { background: #00ff88; color: #000; border: none; font-family: monospace;
           font-weight: 900; font-size: 1rem; letter-spacing: .1em; padding: .75rem 2rem;
           border-radius: 4px; cursor: pointer; width: 100%; margin-top: .75rem;
           text-transform: uppercase; transition: opacity .15s; }
.crt-btn:hover { opacity: .85; }
.crt-status { font-family: monospace; font-size: .75rem; color: rgba(0,255,136,.6);
              margin-top: .75rem; }
.crt-img-wrap { text-align: center; margin-bottom: 1.5rem; }
.crt-img-wrap img { max-width: 100%; border-radius: 8px;
                    box-shadow: 0 0 30px rgba(0,255,100,.15); }
.steps-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 1rem; margin-top: 1.5rem; }
.step-card { background: var(--card-bg); border: 1px solid var(--border); border-radius: var(--radius); padding: 1.25rem; text-align: center; }
.step-num { width: 2.5rem; height: 2.5rem; background: var(--accent); border-radius: 50%;
            display: inline-flex; align-items: center; justify-content: center;
            font-weight: 800; font-size: 1.1rem; margin-bottom: .75rem; }
.leaderboard-preview { padding: 2rem 0 3rem; }

/* ── Version cards ───────────────────────────────────────────────────────────── */
.version-grid { display: grid; grid-template-columns: repeat(2, 1fr); gap: .75rem; }
@media (min-width:480px) { .version-grid { grid-template-columns: repeat(4, 1fr); } }
.version-card { position: relative; display: flex; flex-direction: column; align-items: center; padding: 1rem .75rem;
                background: var(--surface); border: 2px solid var(--border); border-radius: var(--radius);
                cursor: pointer; transition: all .18s; }
.version-card input[type="radio"] { position: absolute; opacity: 0; }
.version-card.selected, .version-card:hover { border-color: var(--accent); background: rgba(124,58,237,.1); }
.version-code  { font-size: 2rem; font-weight: 800; color: var(--accent); }
.version-title { font-size: .8rem; color: var(--text-muted); text-align: center; }
.version-letters { font-size: .75rem; color: var(--text-muted); }
.member-row { margin-bottom: .5rem; }

/* ── Game dashboard ──────────────────────────────────────────────────────────── */
.main-content { padding: 1.5rem 0; }
.page-title { margin-bottom: 1.5rem; }

/* Lobby screen */
.lobby-code { font-size: 3.5rem; font-weight: 900; letter-spacing: .2em;
              color: var(--accent); font-family: monospace; line-height: 1; }
.lobby-version { font-size: 2rem; font-weight: 700; color: var(--success);
                 font-family: monospace; letter-spacing: .1em; }
.lobby-note { background: rgba(124,58,237,.12); border: 1px solid var(--border);
              border-radius: 8px; padding: .85rem 1rem; margin-top: 1.5rem;
              font-size: .95rem; color: var(--text); }

.sticky-bar { position: sticky; top: 56px; z-index: 90;
              background: var(--surface); border-bottom: 1px solid var(--border); }
.sticky-bar-inner { display: flex; gap: 1rem; align-items: center; padding: .5rem 0; flex-wrap: wrap; }
.sticky-code, .sticky-version, .sticky-progress, .sticky-timer, .sticky-score {
  font-size: .85rem; font-weight: 600; color: var(--text-muted);
}
.sticky-timer  { color: var(--warning); font-variant-numeric: tabular-nums; }
.sticky-score  { color: var(--success); }
.sticky-online { color: #00cc66; font-size: .8rem; }

.dashboard-body { padding-top: 1.5rem; }
.dashboard-top  { display: grid; grid-template-columns: auto 1fr; gap: 1.5rem; align-items: start; }
@media (max-width:600px) { .dashboard-top { grid-template-columns: 1fr; } }
.egg-container h2, .letters-container h2 { font-size: 1rem; color: var(--text-muted); margin-bottom: .5rem; }
.egg-svg-wrapper { width: 160px; }
.egg-svg-wrapper.golden #goldenPiece { opacity: 1 !important; }

.letter-inventory { display: flex; flex-wrap: wrap; gap: .4rem; min-height: 2rem; }
.letter-chip { display: inline-flex; align-items: center; justify-content: center;
               width: 2rem; height: 2rem; background: var(--accent);
               border-radius: 6px; font-weight: 800; font-size: .9rem; }
.letter-chip-skipped { background: rgba(239,68,68,.2); color: var(--danger);
                       border: 1px dashed var(--danger); }
.skipped-note { font-size: .85rem; color: var(--danger); margin: -.5rem 0 .75rem; }

.phrase-display { display: flex; flex-wrap: wrap; gap: .3rem; margin-top: .5rem; }
.phrase-slot { display: inline-flex; align-items: center; justify-content: center;
               width: 2rem; height: 2.5rem; border-radius: 6px;
               font-weight: 700; font-size: 1.1rem; }
.phrase-slot.revealed { background: var(--surface); border: 1px solid var(--accent); color: var(--accent); }
.phrase-slot.hidden        { background: var(--surface); border: 1px dashed var(--border); color: var(--text-muted); }
.phrase-slot.hint-revealed { background: var(--surface); border: 1px solid #f0c040; color: #f0c040; font-weight: bold; }
.phrase-space { width: .75rem; }
.phrase-display-lg .phrase-slot { width: 2.5rem; height: 3rem; font-size: 1.3rem; }

.dashboard-team   { margin-top: 1.25rem; }
.member-list      { display: flex; flex-wrap: wrap; gap: .5rem; }
.member-chip      { background: var(--surface); border: 1px solid var(--border); padding: .3rem .75rem; border-radius: 20px; font-size: .9rem; }
.dashboard-action { margin-top: 1.25rem; }
.task-progress-list { display: flex; flex-wrap: wrap; gap: .5rem; margin-top: .5rem; }
.task-progress-item { display: flex; align-items: center; gap: .3rem; padding: .2rem .5rem;
                      background: var(--surface); border-radius: 6px; font-size: .8rem; }

/* ── Task screen ─────────────────────────────────────────────────────────────── */
.task-header { margin-bottom: 1.25rem; }
.task-progress-bar { height: 6px; background: var(--surface); border-radius: 3px; margin-bottom: .5rem; overflow: hidden; }
.task-progress-fill { height: 100%; background: var(--accent); border-radius: 3px; transition: width .4s; }
.task-meta { display: flex; gap: .5rem; align-items: center; flex-wrap: wrap; }
.task-num { font-size: .85rem; color: var(--text-muted); margin-left: auto; }
.task-card { padding: 1.5rem; }
.task-title  { font-size: 1.3rem; margin-bottom: .75rem; }
.task-prompt { color: var(--text-muted); margin-bottom: 1rem; }
.reading-text { background: var(--surface); border-left: 3px solid var(--accent); padding: 1rem;
                border-radius: 0 8px 8px 0; margin-bottom: 1rem; font-size: .95rem; line-height: 1.7; }
.question-text { font-size: 1.05rem; margin-bottom: .75rem; }
.mcq-options { display: grid; grid-template-columns: 1fr 1fr; gap: .5rem; }
@media (max-width:480px) { .mcq-options { grid-template-columns: 1fr; } }
.mcq-btn { padding: .75rem 1rem; background: var(--surface); border: 1.5px solid var(--border);
           color: var(--text); border-radius: 8px; cursor: pointer; font-size: .95rem; text-align: left;
           transition: all .18s; font-family: inherit; }
.mcq-btn:hover    { border-color: var(--accent); background: rgba(124,58,237,.1); }
.mcq-btn.selected { border-color: var(--accent); background: rgba(124,58,237,.15); }
.mcq-btn.correct  { border-color: var(--success); background: rgba(34,197,94,.1); }
.mcq-btn.wrong    { border-color: var(--danger);  background: rgba(239,68,68,.1); }

/* Hangman */
.hangman-definition { color: var(--text-muted); margin-bottom: 1rem; font-style: italic; }
.hangman-word { display: flex; gap: .5rem; flex-wrap: wrap; margin: 1rem 0; }
.hang-letter { display: inline-flex; align-items: center; justify-content: center;
               width: 2.5rem; height: 3rem; border-bottom: 3px solid var(--accent);
               font-size: 1.4rem; font-weight: 700; transition: all .2s; }
.hang-letter.revealed  { color: var(--success); }
.hang-letter.wrong-hint { color: var(--danger); }
.hangman-keyboard { display: flex; flex-wrap: wrap; gap: .3rem; margin: 1rem 0; }
.key-btn { width: 2.2rem; height: 2.2rem; background: var(--surface); border: 1px solid var(--border);
           color: var(--text); border-radius: 6px; cursor: pointer; font-weight: 600; font-size: .85rem;
           transition: all .15s; font-family: inherit; }
.key-btn:hover    { border-color: var(--accent); }
.key-btn.used-correct { background: rgba(34,197,94,.2);  border-color: var(--success); color: var(--success); }
.key-btn.used-wrong   { background: rgba(239,68,68,.15); border-color: var(--danger);  color: var(--danger); opacity:.6; }
.key-btn[disabled] { opacity: .35; cursor: not-allowed; }
.hangman-guess-full { display: flex; gap: .5rem; margin-top: .75rem; flex-wrap: wrap; }

/* Matching */
.matching-cols { display: grid; grid-template-columns: 1fr 1fr; gap: 1rem; }
@media (max-width:500px) { .matching-cols { grid-template-columns: 1fr; } }
.matching-col h4 { font-size: .85rem; color: var(--text-muted); margin-bottom: .5rem; }
.match-item { display: block; width: 100%; padding: .65rem .9rem; background: var(--surface);
              border: 1.5px solid var(--border); color: var(--text); border-radius: 8px;
              cursor: pointer; text-align: left; font-size: .9rem; margin-bottom: .4rem;
              transition: all .18s; font-family: inherit; }
.match-item:hover     { border-color: var(--accent); }
.match-item.selected  { border-color: var(--accent); background: rgba(124,58,237,.15); }
.match-item.paired    { border-color: var(--success); background: rgba(34,197,94,.1); opacity: .7; }
.matching-pairs { margin-top: 1rem; }
.pair-chip { display: inline-flex; gap: .5rem; background: var(--surface); border: 1px solid var(--border);
             padding: .3rem .7rem; border-radius: 20px; font-size: .85rem; margin: .2rem; transition: all .2s; }
.pair-chip.pair-correct { border-color: var(--success); background: rgba(34,197,94,.15); }
.pair-chip.pair-wrong   { border-color: var(--danger);  background: rgba(239,68,68,.15); }
.pair-status { font-weight: 700; }
.pair-chip.pair-correct .pair-status { color: var(--success); }
.pair-chip.pair-wrong   .pair-status { color: var(--danger); }

/* Sequence */
.sequence-list { padding: 0; list-style: none; }
.sequence-item { display: flex; align-items: center; gap: .75rem; padding: .75rem 1rem;
                 background: var(--surface); border: 1.5px solid var(--border); border-radius: 8px;
                 margin-bottom: .5rem; transition: background .2s, border-color .2s; }
.sequence-item.drag-over  { border-color: var(--accent);  background: rgba(124,58,237,.1); }
.sequence-item.item-correct { border-color: var(--success); background: rgba(34,197,94,.12); }
.sequence-item.item-wrong   { border-color: var(--danger);  background: rgba(239,68,68,.12); }
.seq-handle { color: var(--text-muted); cursor: grab; font-size: 1.1rem; }
.seq-text { flex: 1; }
.seq-controls { display: flex; gap: .3rem; }
.seq-up, .seq-down { padding: .2rem .5rem; background: var(--surface); border: 1px solid var(--border);
                     border-radius: 4px; cursor: pointer; color: var(--text); font-size: .85rem; }
.seq-up:hover, .seq-down:hover { border-color: var(--accent); }
.sequence-hint { color: var(--text-muted); margin-bottom: .75rem; font-size: .9rem; }

/* Feedback */
.task-feedback { padding: .85rem 1rem; border-radius: 8px; margin-top: 1rem; font-weight: 600; }
.feedback-correct { background: rgba(34,197,94,.15);  color: var(--success); border: 1px solid rgba(34,197,94,.3); }
.feedback-wrong   { background: rgba(239,68,68,.15);  color: var(--danger);  border: 1px solid rgba(239,68,68,.3); }
.wrong-counter { color: var(--danger); font-size: .9rem; margin: .75rem 0; }
.hint-section { margin-top: 1rem; border-top: 1px solid var(--border); padding-top: .75rem; }
.giveup-section { margin-top: 1.25rem; border-top: 1px solid var(--border); padding-top: .75rem; text-align: right; }
.hint-text { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.3);
             color: var(--warning); padding: .75rem 1rem; border-radius: 8px; margin-top: .5rem; font-size: .9rem; }

/* ── Final-phrase hint system ─────────────────────────────────────────────── */
.hint-section  { margin: 1rem 0; border: 1px dashed rgba(245,158,11,.4);
                 border-radius: 8px; padding: .85rem 1rem; background: rgba(245,158,11,.04); }
.hint-header   { font-size: .8rem; color: var(--warning); letter-spacing: .06em;
                 text-transform: uppercase; margin-bottom: .6rem; }
.hint-buttons  { display: flex; gap: .5rem; flex-wrap: wrap; }
.btn-hint      { font-family: monospace; font-size: .82rem; cursor: pointer;
                 background: rgba(245,158,11,.12); border: 1px solid rgba(245,158,11,.4);
                 color: var(--warning); border-radius: 4px; padding: .4rem .8rem;
                 transition: background .15s; white-space: nowrap; }
.btn-hint:hover:not([disabled]) { background: rgba(245,158,11,.25); }
.btn-hint-used { background: rgba(0,255,136,.08) !important; border-color: rgba(0,255,136,.3) !important;
                 color: var(--accent) !important; cursor: default; }
.hint-display  { margin-top: .75rem; display: flex; flex-direction: column; gap: .4rem; }
.hint-item     { background: rgba(245,158,11,.1); border: 1px solid rgba(245,158,11,.25);
                 border-radius: 6px; padding: .5rem .85rem; font-family: monospace;
                 font-size: 1rem; letter-spacing: .08em; color: #f5f0e0; }
.hint-lvl      { color: var(--warning); font-size: .75rem; margin-right: .5rem;
                 opacity: .7; }

/* Leaderboard */
.leaderboard-table tr.rank-1 td:first-child { font-size: 1.3rem; }
.rank-1 td { background: rgba(255,215,0,.05); }
.rank-2 td { background: rgba(192,192,192,.05); }
.rank-3 td { background: rgba(205,127,50,.05); }
.score-highlight { color: var(--accent); font-size: 1.1rem; }
.medal { font-size: 1.3rem; }

/* Util */
.text-center { text-align: center; }
.text-muted  { color: var(--text-muted); }

/* ── Mobile ──────────────────────────────────────────────────────────────────── */
@media (max-width: 640px) {
  .hero-inner { grid-template-columns: 1fr; }
  .egg-demo   { display: none; }
  .btn-lg     { font-size: .95rem; padding: .75rem 1.5rem; }
  .sticky-bar-inner { gap: .5rem; }
}