/* Number Sense Master - Responsive Stylesheet */
:root {
    --bg: #f8fafc;
    --surface: #ffffff;
    --surface-alt: #f1f5f9;
    --text: #0f172a;
    --text-muted: #475569;
    --primary: #1d4ed8;
    --primary-dark: #1e3a8a;
    --primary-light: #dbeafe;
    --accent: #f59e0b;
    --accent-dark: #b45309;
    --success: #16a34a;
    --success-bg: #dcfce7;
    --danger: #dc2626;
    --danger-bg: #fee2e2;
    --border: #e2e8f0;
    --radius: 14px;
    --shadow: 0 4px 20px rgba(15, 23, 42, 0.06);
    --font-sans: 'Inter', system-ui, -apple-system, sans-serif;
    --font-mono: 'JetBrains Mono', monospace;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
body {
    font-family: var(--font-sans);
    background: var(--bg);
    color: var(--text);
    line-height: 1.5;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}
a { color: var(--primary); text-decoration: none; }
a:hover { text-decoration: underline; }
.hidden { display: none !important; }
.container { width: 100%; max-width: 1240px; margin: 0 auto; padding: 0 18px; }

/* Top Horizontal Ad Space */
.top-ad-bar {
    background: #0f172a;
    padding: 8px 0;
    border-bottom: 1px solid #1e293b;
}
.top-ad-container { display: flex; justify-content: center; align-items: center; }
.top-ad-link { display: block; width: 100%; max-width: 1180px; border-radius: 10px; overflow: hidden; }
.top-ad-img { width: 100%; height: auto; max-height: 120px; object-fit: cover; display: block; border-radius: 10px; }

/* Site Header */
.site-header {
    background: var(--surface);
    border-bottom: 1px solid var(--border);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 1px 6px rgba(15,23,42,0.04);
}
.header-inner {
    display: flex;
    align-items: center;
    justify-content: space-between;
    min-height: 70px;
    gap: 16px;
}
.brand-logo { display: flex; align-items: center; gap: 12px; text-decoration: none !important; color: var(--text); }
.brand-icon {
    width: 44px; height: 44px; border-radius: 12px;
    background: linear-gradient(135deg, var(--primary-dark), var(--primary));
    color: #fff; display: flex; align-items: center; justify-content: center;
    font-weight: 900; font-size: 24px; box-shadow: 0 4px 12px rgba(29,78,216,0.25);
}
.brand-text { display: flex; flex-direction: column; }
.brand-title { font-size: 1.2rem; font-weight: 800; letter-spacing: -0.02em; }
.brand-highlight { color: var(--primary); }
.brand-sub { font-size: 0.76rem; color: var(--text-muted); font-weight: 600; }

.site-nav { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; }
.nav-link {
    padding: 8px 14px; border-radius: 10px; font-weight: 600; font-size: 0.92rem;
    color: var(--text-muted); text-decoration: none !important; transition: all 0.15s;
    display: inline-flex; align-items: center; gap: 6px;
}
.nav-link:hover, .nav-link.active { background: var(--primary-light); color: var(--primary-dark); }
.nav-user-pill { display: flex; align-items: center; gap: 8px; margin-left: 6px; padding-left: 10px; border-left: 1px solid var(--border); }
.user-badge { font-size: 0.85rem; font-weight: 700; color: var(--primary-dark); }
.btn-logout { font-size: 0.8rem; font-weight: 700; color: var(--danger); padding: 4px 10px; border-radius: 6px; background: var(--danger-bg); }

.mobile-menu-btn {
    display: none; background: none; border: 1px solid var(--border); border-radius: 8px;
    padding: 8px; cursor: pointer; flex-direction: column; gap: 4px;
}
.mobile-menu-btn span { width: 22px; height: 2px; background: var(--text); display: block; }

/* Buttons */
.btn {
    display: inline-flex; align-items: center; justify-content: center; gap: 8px;
    padding: 10px 18px; border-radius: 10px; font-weight: 700; font-size: 0.95rem;
    cursor: pointer; border: 1px solid transparent; transition: all 0.15s; text-decoration: none !important;
    font-family: inherit;
}
.btn-primary { background: var(--primary); color: #fff; }
.btn-primary:hover { background: var(--primary-dark); }
.btn-launch {
    background: linear-gradient(135deg, #f59e0b, #d97706); color: #0f172a;
    box-shadow: 0 4px 14px rgba(245, 158, 11, 0.35);
}
.btn-launch:hover { filter: brightness(1.05); transform: translateY(-1px); }
.btn-outline { background: #fff; border-color: var(--border); color: var(--text); }
.btn-outline:hover { background: var(--surface-alt); }
.btn-danger-outline { background: #fff; border-color: var(--danger); color: var(--danger); }
.btn-ghost { background: var(--surface-alt); color: var(--text-muted); }
.btn-ghost:hover { background: #e2e8f0; color: var(--text); }
.btn-sm { padding: 6px 12px; font-size: 0.84rem; border-radius: 8px; }
.btn-lg { padding: 12px 22px; font-size: 1.02rem; }
.btn-xl { padding: 15px 28px; font-size: 1.1rem; }
.btn-block { width: 100%; }
.btn-tiny {
    padding: 3px 9px; font-size: 0.75rem; font-weight: 700; border-radius: 6px;
    border: 1px solid var(--border); background: #fff; cursor: pointer; color: var(--text-muted);
}
.btn-tiny:hover { background: var(--primary-light); color: var(--primary-dark); }
.btn-danger-tiny { color: var(--danger); border-color: #fecaca; background: #fff5f5; }

/* Main Layout */
.site-main { flex: 1; padding: 24px 0 48px; }
.main-container { display: flex; flex-direction: column; gap: 22px; }

/* Kid-Friendly Welcome & Choice Cards */
.kid-hero-grid {
    display: grid; grid-template-columns: 1.25fr 1fr; gap: 18px; align-items: stretch;
}
.kid-choice-card {
    border-radius: 18px; padding: 22px 24px; display: flex; flex-direction: column;
    justify-content: space-between; gap: 12px; box-shadow: var(--shadow);
}
.kid-card-free {
    background: linear-gradient(135deg, #1e3a8a 0%, #1d4ed8 100%);
    color: #fff;
}
.kid-card-badge {
    display: inline-flex; align-items: center; gap: 8px; align-self: flex-start;
    background: rgba(255,255,255,0.16); padding: 5px 12px; border-radius: 20px;
    font-weight: 800; font-size: 0.84rem;
}
.pulse-dot { width: 9px; height: 9px; border-radius: 50%; background: #4ade80; box-shadow: 0 0 8px #4ade80; }
.kid-card-heading { font-size: 1.45rem; font-weight: 900; letter-spacing: -0.01em; }
.kid-card-text { font-size: 0.96rem; color: #e0f2fe; line-height: 1.45; }
.kid-steps-pills { display: flex; gap: 8px; flex-wrap: wrap; margin-top: 2px; }
.kid-step-pill {
    background: rgba(15, 23, 42, 0.35); border: 1px solid rgba(255,255,255,0.2);
    padding: 5px 12px; border-radius: 99px; font-size: 0.82rem; font-weight: 700; color: #fff;
}

.kid-card-key {
    background: #fffbeb; border: 2px solid #f59e0b; color: #0f172a;
}
.kid-key-header { display: flex; align-items: center; gap: 12px; }
.kid-key-icon {
    font-size: 2rem; width: 50px; height: 50px; border-radius: 14px;
    background: #fef3c7; border: 1px solid #fde68a; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.kid-key-header h2 { font-size: 1.15rem; font-weight: 900; color: #78350f; }
.kid-key-header p { font-size: 0.88rem; color: #92400e; }
.key-input-group { display: flex; gap: 8px; flex-wrap: wrap; }
.key-input {
    flex: 1; min-width: 190px; padding: 12px 14px; border-radius: 12px; border: 2px solid #f59e0b;
    background: #ffffff; color: #0f172a; font-family: var(--font-mono);
    font-weight: 800; font-size: 1.05rem; text-transform: uppercase;
}
.key-input::placeholder { color: #94a3b8; text-transform: none; font-family: var(--font-sans); font-weight: 600; }
.key-status-msg { font-size: 0.86rem; margin-top: 6px; font-weight: 800; color: #b45309; }

.step-block { display: flex; flex-direction: column; gap: 6px; }
.kid-step-tag {
    display: inline-block; font-size: 0.78rem; font-weight: 900; letter-spacing: 0.05em;
    color: var(--primary-dark); background: var(--primary-light); padding: 4px 10px;
    border-radius: 8px; align-self: flex-start;
}
.step2-banner { margin: 14px 0 6px; }

/* Coach Session Strip */
.coach-session-strip {
    background: #ecfdf5; border: 2px solid #10b981; border-radius: 12px;
    padding: 12px 18px; display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 14px; font-size: 0.9rem;
}
.strip-label { color: #047857; font-weight: 600; margin-right: 4px; }
.key-pill { background: #065f46; color: #fff; padding: 3px 8px; border-radius: 6px; font-family: var(--font-mono); font-weight: 700; }
.badge-mode { background: #d1fae5; color: #065f46; padding: 3px 8px; border-radius: 6px; font-weight: 700; }
.nickname-input { padding: 5px 10px; border-radius: 8px; border: 1px solid #10b981; font-size: 0.88rem; width: 150px; }

/* Division Tabs & Setup Toolbar */
.setup-header-bar {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px; display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 16px; box-shadow: var(--shadow);
}
.division-tabs { display: flex; gap: 10px; flex-wrap: wrap; }
.division-tab {
    display: flex; align-items: center; gap: 12px; padding: 12px 18px;
    border-radius: 12px; border: 2px solid var(--border); background: var(--surface-alt);
    cursor: pointer; text-align: left; transition: all 0.15s; font-family: inherit;
}
.division-tab.active {
    border-color: var(--primary); background: var(--primary-light); color: var(--primary-dark);
}
.div-icon { font-size: 1.5rem; }
.div-text { display: flex; flex-direction: column; }
.div-text strong { font-size: 0.98rem; }
.div-text span { font-size: 0.78rem; color: var(--text-muted); }
.setup-actions-bar { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.count-pill { background: var(--primary); color: #fff; padding: 2px 9px; border-radius: 12px; font-weight: 800; }
.quick-select-btns { display: flex; gap: 6px; flex-wrap: wrap; }

.teacher-locked-notice {
    background: #eff6ff; border: 2px solid #3b82f6; border-radius: 12px;
    padding: 14px 18px; display: flex; align-items: center; gap: 12px; color: #1e3a8a;
}

/* Skills Grid */
.division-panel-intro {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap;
    gap: 12px; margin: 16px 0;
}
.division-panel-intro h2 { font-size: 1.35rem; font-weight: 800; }
.division-panel-intro p { color: var(--text-muted); font-size: 0.92rem; }
.test-rule-callout {
    background: #fffbeb; border: 1px solid #fde68a; color: #92400e;
    padding: 8px 14px; border-radius: 10px; font-size: 0.84rem; max-width: 480px;
}
.sections-grid {
    display: grid; grid-template-columns: repeat(auto-fit, minmax(350px, 1fr)); gap: 18px;
}
.sequence-section-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 16px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 12px;
}
.section-card-header {
    display: flex; justify-content: space-between; align-items: flex-start; gap: 10px;
    padding-bottom: 10px; border-bottom: 1px solid var(--border);
}
.section-badge {
    display: inline-block; font-size: 0.72rem; font-weight: 800; text-transform: uppercase;
    background: var(--primary-light); color: var(--primary-dark); padding: 2px 8px; border-radius: 6px; margin-bottom: 4px;
}
.section-card-header h3 { font-size: 1rem; font-weight: 800; }
.section-toggle-group { display: flex; gap: 4px; }
.skills-checklist { display: flex; flex-direction: column; gap: 6px; max-height: 430px; overflow-y: auto; padding-right: 4px; }
.skill-check-item {
    display: flex; align-items: flex-start; gap: 10px; padding: 8px 10px;
    border-radius: 10px; border: 1px solid var(--border); cursor: pointer; transition: background 0.12s;
}
.skill-check-item:hover { background: var(--surface-alt); }
.skill-checkbox { margin-top: 4px; width: 17px; height: 17px; accent-color: var(--primary); cursor: pointer; }
.skill-info { display: flex; flex-direction: column; gap: 2px; flex: 1; }
.skill-title-row { display: flex; align-items: baseline; gap: 6px; font-size: 0.88rem; font-weight: 600; }
.skill-code { font-family: var(--font-mono); font-size: 0.76rem; font-weight: 800; color: var(--primary); }
.skill-example { font-family: var(--font-mono); font-size: 0.76rem; color: var(--text-muted); }

/* Gamified Practice Arena */
.arena-view { display: flex; flex-direction: column; gap: 16px; }
.arena-hud {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 12px 18px; display: flex; align-items: center; justify-content: space-between;
    flex-wrap: wrap; gap: 14px; box-shadow: var(--shadow);
}
.hud-left, .hud-right { display: flex; align-items: center; gap: 10px; }
.hud-mode-tag {
    background: var(--primary-light); color: var(--primary-dark); font-weight: 800;
    font-size: 0.82rem; padding: 4px 10px; border-radius: 8px;
}
.hud-stats-grid { display: flex; align-items: center; gap: 12px; flex-wrap: wrap; }
.hud-stat-box {
    background: var(--surface-alt); padding: 6px 14px; border-radius: 10px;
    display: flex; flex-direction: column; align-items: center; min-width: 86px;
}
.hud-label { font-size: 0.68rem; font-weight: 800; color: var(--text-muted); letter-spacing: 0.04em; }
.hud-value { font-family: var(--font-mono); font-size: 1.08rem; font-weight: 800; }
.hud-xp { color: var(--primary); }
.hud-mult { color: var(--accent-dark); }
.streak-box.on-fire { background: #fff7ed; border: 1px solid #fdba74; color: #c2410c; transform: scale(1.04); transition: all 0.2s; }

.rank-progress-bar {
    background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
    padding: 10px 16px; display: flex; flex-direction: column; gap: 6px;
}
.rank-info { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.88rem; }
.rank-badge { font-weight: 800; color: var(--primary-dark); }
.combo-callout { font-weight: 700; color: var(--accent-dark); }
.xp-track { width: 100%; height: 8px; background: var(--surface-alt); border-radius: 99px; overflow: hidden; }
.xp-fill { height: 100%; background: linear-gradient(90deg, #3b82f6, #f59e0b, #ef4444); transition: width 0.3s ease; }

/* Question Stage */
.question-stage-card {
    position: relative; background: var(--surface); border: 2px solid var(--border);
    border-radius: 18px; padding: 28px 24px; box-shadow: 0 10px 30px rgba(15,23,42,0.07);
    display: flex; flex-direction: column; align-items: center; gap: 18px; overflow: hidden;
}
.question-stage-card.streak-glow-1 { border-color: #60a5fa; box-shadow: 0 0 24px rgba(59,130,246,0.2); }
.question-stage-card.streak-glow-2 { border-color: #f59e0b; box-shadow: 0 0 28px rgba(245,158,11,0.28); }
.question-stage-card.streak-glow-3 { border-color: #ef4444; box-shadow: 0 0 34px rgba(239,68,68,0.34); }

.confetti-canvas { position: absolute; inset: 0; width: 100%; height: 100%; pointer-events: none; z-index: 5; }
.floating-xp-container { position: absolute; top: 18px; right: 24px; pointer-events: none; z-index: 10; }
.float-xp {
    font-weight: 900; font-size: 1.1rem; color: #16a34a;
    animation: floatUp 1.1s ease-out forwards;
}
@keyframes floatUp {
    0% { opacity: 1; transform: translateY(0) scale(0.9); }
    100% { opacity: 0; transform: translateY(-36px) scale(1.15); }
}

.question-meta-bar { width: 100%; display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; }
.q-skill-pill { background: var(--surface-alt); color: var(--text-muted); padding: 4px 12px; border-radius: 20px; font-size: 0.82rem; font-weight: 700; }
.q-star-badge { background: #fef3c7; color: #b45309; border: 1px solid #fde68a; padding: 4px 12px; border-radius: 20px; font-size: 0.82rem; font-weight: 800; }

.question-display-wrap {
    display: flex; align-items: baseline; justify-content: center; flex-wrap: wrap;
    gap: 12px; padding: 18px 10px; text-align: center; max-width: 900px;
}
.question-number-tag { font-family: var(--font-mono); font-size: 1.4rem; font-weight: 800; color: var(--text-muted); }
.question-prompt { font-family: var(--font-mono); font-size: 2.1rem; font-weight: 800; color: var(--text); line-height: 1.3; }
.question-unit-suffix { font-size: 1.25rem; font-weight: 700; color: var(--primary-dark); }
.format-hint-bar { font-size: 0.85rem; color: var(--text-muted); background: var(--surface-alt); padding: 5px 14px; border-radius: 8px; text-align: center; }

.answer-form { width: 100%; max-width: 540px; z-index: 6; }
.answer-input-row { display: flex; gap: 10px; width: 100%; }
.answer-input {
    flex: 1; padding: 14px 18px; font-family: var(--font-mono); font-size: 1.5rem; font-weight: 800;
    border-radius: 12px; border: 2px solid var(--primary); text-align: center; outline: none;
}
.answer-input:focus { box-shadow: 0 0 0 4px rgba(29,78,216,0.18); }
.btn-submit-ans { background: var(--primary); color: #fff; padding: 0 24px; font-size: 1.1rem; border-radius: 12px; }
.btn-next-q { background: var(--success); color: #fff; padding: 0 24px; font-size: 1.05rem; border-radius: 12px; }

/* Touch Keypad */
.touch-keypad {
    display: grid; grid-template-columns: repeat(4, 1fr); gap: 8px;
    width: 100%; max-width: 420px; z-index: 6; margin-top: 4px;
}
.key-btn {
    padding: 12px 8px; font-family: var(--font-mono); font-size: 1.15rem; font-weight: 800;
    border-radius: 10px; border: 1px solid var(--border); background: var(--surface-alt);
    cursor: pointer; user-select: none; transition: background 0.1s;
}
.key-btn:active { background: var(--primary-light); transform: scale(0.97); }
.key-op { background: #e0e7ff; color: var(--primary-dark); font-size: 0.98rem; }
.key-del, .key-clr { background: #fee2e2; color: var(--danger); font-size: 0.95rem; }

/* Feedback Panel */
.feedback-panel {
    width: 100%; max-width: 680px; border-radius: 12px; padding: 14px 18px;
    border: 2px solid var(--border); z-index: 6;
}
.feedback-panel.fb-correct { background: #f0fdf4; border-color: #22c55e; color: #14532d; }
.feedback-panel.fb-wrong { background: #fef2f2; border-color: #ef4444; color: #7f1d1d; }
.feedback-header { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; margin-bottom: 6px; }
.feedback-status-badge { font-weight: 900; font-size: 1.05rem; }
.feedback-explanation { font-size: 0.92rem; line-height: 1.45; }

/* Session Complete Card */
.session-complete-card {
    background: var(--surface); border: 2px solid var(--primary); border-radius: 18px;
    padding: 32px 24px; text-align: center; box-shadow: var(--shadow);
    display: flex; flex-direction: column; align-items: center; gap: 16px;
}
.complete-badge { background: var(--primary-light); color: var(--primary-dark); font-weight: 800; padding: 5px 14px; border-radius: 20px; }
.summary-stats-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(140px, 1fr)); gap: 14px; width: 100%; max-width: 680px; margin: 10px 0; }
.sum-card { background: var(--surface-alt); padding: 14px; border-radius: 12px; display: flex; flex-direction: column; gap: 4px; }
.sum-card span { font-size: 0.8rem; color: var(--text-muted); font-weight: 700; }
.sum-card strong { font-size: 1.4rem; font-family: var(--font-mono); color: var(--primary-dark); }
.complete-actions { display: flex; gap: 12px; flex-wrap: wrap; justify-content: center; }

/* Trick Reference Library */
.trick-library-section { margin-top: 24px; display: flex; flex-direction: column; gap: 16px; }
.section-heading { display: flex; justify-content: space-between; align-items: flex-end; flex-wrap: wrap; gap: 14px; }
.eyebrow-tag { font-size: 0.75rem; font-weight: 800; text-transform: uppercase; letter-spacing: 0.06em; color: var(--primary); display: block; margin-bottom: 4px; }
.trick-search-input { padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border); width: 320px; max-width: 100%; font-size: 0.92rem; }
.trick-cards-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(320px, 1fr)); gap: 14px; }
.trick-ref-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: 12px;
    padding: 16px; display: flex; flex-direction: column; gap: 8px; box-shadow: var(--shadow);
}
.trick-ref-top { display: flex; justify-content: space-between; align-items: center; gap: 8px; }
.trick-code-badge { font-size: 0.74rem; font-weight: 800; padding: 3px 8px; border-radius: 6px; }
.badge-elem { background: #dbeafe; color: #1e40af; }
.badge-jh { background: #fef3c7; color: #92400e; }
.btn-practice-single {
    background: none; border: 1px solid var(--primary); color: var(--primary);
    padding: 3px 10px; border-radius: 6px; font-size: 0.76rem; font-weight: 700; cursor: pointer;
}
.btn-practice-single:hover { background: var(--primary); color: #fff; }
.trick-ref-card h3 { font-size: 0.96rem; font-weight: 800; }
.trick-tip-text { font-size: 0.85rem; color: var(--text-muted); flex: 1; }
.trick-example-box { background: var(--surface-alt); padding: 6px 10px; border-radius: 8px; font-size: 0.8rem; display: flex; flex-direction: column; gap: 2px; }
.trick-example-box code { font-family: var(--font-mono); font-weight: 700; color: var(--primary-dark); }

/* Coach & Admin Pages */
.alert { padding: 14px 18px; border-radius: 12px; font-weight: 600; font-size: 0.95rem; }
.alert-success { background: var(--success-bg); color: #14532d; border: 1px solid #86efac; }
.alert-error { background: var(--danger-bg); color: #7f1d1d; border: 1px solid #fca5a5; }

.coach-auth-hero { display: flex; flex-direction: column; gap: 24px; }
.auth-hero-copy { background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow); }
.auth-hero-copy h1 { font-size: 1.65rem; font-weight: 900; margin-bottom: 10px; }
.coach-feature-list { margin-top: 12px; padding-left: 20px; display: flex; flex-direction: column; gap: 6px; color: var(--text-muted); }
.auth-forms-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); gap: 20px; }
.auth-card {
    position: relative; background: var(--surface); border: 1px solid var(--border);
    border-radius: var(--radius); padding: 24px; box-shadow: var(--shadow);
}
.auth-card-highlight { border: 2px solid var(--primary); }
.card-ribbon {
    position: absolute; top: 14px; right: 14px; background: var(--primary-light);
    color: var(--primary-dark); font-size: 0.74rem; font-weight: 800; padding: 3px 10px; border-radius: 12px;
}
.auth-sub { font-size: 0.88rem; color: var(--text-muted); margin-bottom: 16px; }
.stacked-form { display: flex; flex-direction: column; gap: 14px; }
.form-group { display: flex; flex-direction: column; gap: 5px; }
.form-group label { font-size: 0.86rem; font-weight: 700; }
.form-control {
    padding: 10px 14px; border-radius: 10px; border: 1px solid var(--border);
    font-size: 0.95rem; font-family: inherit; width: 100%;
}
.form-control:focus { outline: none; border-color: var(--primary); box-shadow: 0 0 0 3px rgba(29,78,216,0.12); }

.coach-dashboard-header, .admin-header-bar {
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 16px;
}
.new-key-spotlight {
    background: linear-gradient(135deg, #065f46, #047857); color: #fff;
    padding: 22px 26px; border-radius: var(--radius); display: flex;
    justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 18px;
}
.big-key-box { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; margin: 10px 0; }
.big-key-box code {
    font-family: var(--font-mono); font-size: 2rem; font-weight: 900;
    background: rgba(0,0,0,0.28); padding: 6px 18px; border-radius: 12px; letter-spacing: 0.05em;
}

.coach-main-grid { display: grid; grid-template-columns: 1fr 370px; gap: 22px; align-items: start; }
.key-generator-card, .sidebar-card, .admin-section-card {
    background: var(--surface); border: 1px solid var(--border); border-radius: var(--radius);
    padding: 22px; box-shadow: var(--shadow);
}
.coach-sidebar { display: flex; flex-direction: column; gap: 18px; }
.card-title-row { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 16px; }
.badge-24h { background: #fef3c7; color: #92400e; font-size: 0.78rem; font-weight: 800; padding: 4px 10px; border-radius: 20px; }

.gen-step { display: flex; gap: 14px; margin-bottom: 18px; }
.step-num {
    width: 30px; height: 30px; border-radius: 50%; background: var(--primary); color: #fff;
    font-weight: 800; font-size: 0.9rem; display: flex; align-items: center; justify-content: center; flex-shrink: 0;
}
.step-body { flex: 1; display: flex; flex-direction: column; gap: 8px; }
.step-title { font-weight: 800; font-size: 0.96rem; }
.radio-cards-row { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 10px; }
.radio-card {
    border: 1px solid var(--border); border-radius: 10px; padding: 10px 12px;
    display: flex; align-items: flex-start; gap: 8px; cursor: pointer; background: var(--surface-alt);
}
.radio-card-content { display: flex; flex-direction: column; gap: 2px; font-size: 0.86rem; }
.radio-card-content small { color: var(--text-muted); font-size: 0.76rem; }

.coach-skills-picker { border: 1px solid var(--border); border-radius: 12px; padding: 14px; background: var(--surface-alt); margin-bottom: 18px; }
.picker-toolbar { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px; margin-bottom: 12px; }
.coach-div-heading { font-size: 1rem; font-weight: 800; margin: 12px 0 8px; color: var(--primary-dark); }
.coach-sections-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(260px, 1fr)); gap: 12px; }
.coach-sec-box { background: #fff; border: 1px solid var(--border); border-radius: 10px; padding: 10px; }
.coach-sec-head { display: flex; justify-content: space-between; align-items: center; gap: 6px; font-size: 0.82rem; padding-bottom: 6px; border-bottom: 1px solid var(--border); margin-bottom: 6px; }
.coach-sec-list { max-height: 210px; overflow-y: auto; display: flex; flex-direction: column; gap: 4px; }
.coach-skill-row { display: flex; align-items: baseline; gap: 6px; font-size: 0.8rem; cursor: pointer; }
.skill-code-mini { font-family: var(--font-mono); font-weight: 700; color: var(--primary); font-size: 0.74rem; }

.keys-list { display: flex; flex-direction: column; gap: 10px; margin-top: 10px; }
.key-history-item { border: 1px solid var(--border); border-radius: 10px; padding: 12px; display: flex; flex-direction: column; gap: 6px; }
.key-live { border-left: 4px solid var(--success); }
.key-expired { opacity: 0.68; background: var(--surface-alt); }
.key-item-top, .key-item-meta, .key-item-stats, .key-item-footer { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 6px; font-size: 0.8rem; }
.key-code-badge { font-family: var(--font-mono); font-weight: 800; font-size: 0.95rem; color: var(--primary-dark); }
.pill-live { background: var(--success-bg); color: var(--success); padding: 2px 8px; border-radius: 10px; font-weight: 700; }
.pill-expired { background: #e2e8f0; color: var(--text-muted); padding: 2px 8px; border-radius: 10px; }

.activity-feed { display: flex; flex-direction: column; gap: 8px; margin-top: 10px; }
.activity-row { display: flex; align-items: center; gap: 10px; font-size: 0.82rem; padding-bottom: 6px; border-bottom: 1px solid var(--border); }
.act-body { flex: 1; }

/* Printable PDF Test Generator Card */
.pdf-generator-banner-card {
    background: var(--surface); border: 2px solid #bfdbfe; border-radius: var(--radius);
    padding: 22px; box-shadow: var(--shadow); margin-bottom: 18px;
}
.pdf-gen-header {
    display: flex; justify-content: space-between; align-items: flex-start; flex-wrap: wrap; gap: 12px;
    padding-bottom: 16px; border-bottom: 1px solid var(--border); margin-bottom: 16px;
}
.pdf-gen-header h2 { font-size: 1.25rem; font-weight: 900; margin: 4px 0; color: var(--text); }
.pdf-gen-header p { font-size: 0.9rem; color: var(--text-muted); max-width: 820px; }
.pdf-division-cards-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }
.pdf-div-card {
    border: 1px solid var(--border); border-radius: 12px; padding: 16px;
    background: var(--surface-alt); display: flex; flex-direction: column; justify-content: space-between; gap: 14px;
}
.pdf-card-ready { border-left: 4px solid var(--primary); }
.pdf-card-cooldown { border-left: 4px solid var(--success); background: #f0fdf4; }
.pdf-div-top { display: flex; align-items: flex-start; gap: 12px; }
.pdf-div-icon { font-size: 2rem; line-height: 1; }
.pdf-div-top h3 { font-size: 1.02rem; font-weight: 800; margin-bottom: 4px; }
.pdf-div-top p { font-size: 0.84rem; color: var(--text-muted); }
.pdf-div-generated-state { display: flex; flex-direction: column; gap: 10px; }
.pdf-ready-meta { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 8px; font-size: 0.82rem; }
.pdf-download-btn-row { display: flex; gap: 10px; flex-wrap: wrap; }
.pdf-daily-list { display: flex; flex-direction: column; gap: 10px; }
.pdf-daily-item {
    background: #ffffff; border: 1px solid var(--border); border-radius: 10px; padding: 12px 14px;
    display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 10px;
}
.pdf-daily-item-info { display: flex; align-items: center; gap: 10px; flex-wrap: wrap; font-size: 0.88rem; }

/* Admin Analytics */
.admin-login-wrap { max-width: 460px; margin: 32px auto; }
.kpi-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(200px, 1fr)); gap: 14px; }
.kpi-card { background: var(--surface); border: 1px solid var(--border); border-radius: 12px; padding: 16px; box-shadow: var(--shadow); display: flex; flex-direction: column; gap: 4px; }
.kpi-label { font-size: 0.78rem; font-weight: 700; color: var(--text-muted); text-transform: uppercase; }
.kpi-value { font-size: 1.75rem; font-weight: 900; font-family: var(--font-mono); color: var(--primary-dark); }
.kpi-sub { font-size: 0.78rem; color: var(--text-muted); }

.ad-manager-grid { display: grid; grid-template-columns: 1.2fr 1fr; gap: 20px; align-items: start; }
.form-row-2 { display: grid; grid-template-columns: 1fr 1fr; gap: 12px; margin-bottom: 12px; }
.checkbox-callout { background: var(--surface-alt); padding: 12px; border-radius: 10px; margin-bottom: 12px; }
.toggle-switch-label { display: flex; align-items: center; gap: 10px; cursor: pointer; }
.ad-live-preview-box { background: var(--surface-alt); padding: 14px; border-radius: 12px; display: flex; flex-direction: column; gap: 8px; }
.preview-banner-img { width: 100%; height: auto; border-radius: 8px; display: block; }
.status-pill { padding: 4px 10px; border-radius: 20px; font-size: 0.78rem; font-weight: 800; }
.status-on { background: var(--success-bg); color: var(--success); }
.status-off { background: var(--danger-bg); color: var(--danger); }

.admin-two-col { display: grid; grid-template-columns: 1.2fr 1fr; gap: 18px; }
.table-responsive { overflow-x: auto; margin-top: 10px; }
.data-table { width: 100%; border-collapse: collapse; font-size: 0.86rem; }
.data-table th, .data-table td { padding: 10px 12px; text-align: left; border-bottom: 1px solid var(--border); }
.data-table th { background: var(--surface-alt); font-weight: 800; color: var(--text-muted); font-size: 0.76rem; text-transform: uppercase; }
.role-badge { padding: 2px 7px; border-radius: 6px; font-size: 0.72rem; font-weight: 800; }
.role-admin { background: #fef3c7; color: #92400e; }
.role-teacher { background: #dbeafe; color: #1e40af; }

/* Footer */
.site-footer { background: var(--surface); border-top: 1px solid var(--border); padding: 22px 0; margin-top: auto; font-size: 0.86rem; color: var(--text-muted); }
.footer-inner { display: flex; justify-content: space-between; align-items: center; flex-wrap: wrap; gap: 14px; }
.footer-note { font-size: 0.78rem; margin-top: 4px; }
.footer-links { display: flex; gap: 16px; font-weight: 600; }

/* Mobile Responsiveness */
@media (max-width: 920px) {
    .kid-hero-grid, .coach-main-grid, .ad-manager-grid, .admin-two-col, .form-row-2, .pdf-division-cards-grid { grid-template-columns: 1fr; }
    .mobile-menu-btn { display: flex; }
    .site-nav {
        display: none; width: 100%; flex-direction: column; align-items: stretch;
        padding: 12px 0; border-top: 1px solid var(--border);
    }
    .site-nav.open { display: flex; }
    .header-inner { flex-wrap: wrap; }
    .question-prompt { font-size: 1.55rem; }
    .sections-grid { grid-template-columns: 1fr; }
}