:root {
    --bg-dark: #070b14;
    --bg-surface: #0f172a;
    --bg-card: rgba(15, 23, 42, 0.78);
    --bg-card-hover: rgba(30, 41, 59, 0.88);
    --accent-primary: #38bdf8;
    --accent-indigo: #6366f1;
    --accent-violet: #8b5cf6;
    --gold: #f59e0b;
    --gold-bright: #fbbf24;
    --gold-soft: #fcd34d;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --success: #10b981;
    --danger: #ef4444;
    --warning: #f59e0b;
    --border-subtle: rgba(148, 163, 184, 0.16);
    --border-active: rgba(56, 189, 248, 0.55);
    --border-gold: rgba(245, 158, 11, 0.35);
    --header-height: 62px;
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    -webkit-tap-highlight-color: transparent;
}

body {
    background-color: var(--bg-dark);
    background-image:
        radial-gradient(circle at 12% 18%, rgba(56, 189, 248, 0.10) 0%, transparent 42%),
        radial-gradient(circle at 88% 15%, rgba(99, 102, 241, 0.11) 0%, transparent 45%),
        radial-gradient(circle at 50% 90%, rgba(245, 158, 11, 0.06) 0%, transparent 50%);
    background-attachment: fixed;
    color: var(--text-main);
    font-family: 'Plus Jakarta Sans', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    overflow-x: hidden;
    line-height: 1.55;
}

/* =========================================
   HEADER & NAVIGATION
   ========================================= */
.site-header {
    background: rgba(7, 11, 20, 0.82);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border-bottom: 1px solid var(--border-subtle);
    position: sticky;
    top: 0;
    z-index: 200;
    width: 100%;
}

.header-inner {
    max-width: 960px;
    margin: 0 auto;
    padding: 0 18px;
    height: var(--header-height);
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
}

.brand-link {
    display: flex;
    align-items: center;
    gap: 10px;
    text-decoration: none;
    color: var(--text-main);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.25rem;
    letter-spacing: -0.3px;
}

.brand-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    border-radius: 9px;
    background: linear-gradient(135deg, var(--accent-primary), var(--accent-indigo));
    color: #fff;
    font-size: 1.05rem;
    box-shadow: 0 4px 12px rgba(56, 189, 248, 0.3);
}

.brand-accent {
    color: var(--accent-primary);
}

.header-right {
    display: flex;
    align-items: center;
    gap: 10px;
}

.lang-switch-group {
    display: inline-flex;
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--border-subtle);
    border-radius: 10px;
    padding: 3px;
}

.lang-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    font-size: 0.78rem;
    font-weight: 700;
    padding: 5px 10px;
    border-radius: 7px;
    cursor: pointer;
    transition: all 0.2s ease;
    font-family: inherit;
    display: flex;
    align-items: center;
    gap: 4px;
}

.lang-btn:hover {
    color: var(--text-main);
}

.lang-btn.active {
    background: rgba(56, 189, 248, 0.18);
    color: var(--accent-primary);
    border: 1px solid rgba(56, 189, 248, 0.35);
}

.menu-toggle-btn {
    display: none;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    font-size: 1.25rem;
    width: 38px;
    height: 38px;
    border-radius: 9px;
    cursor: pointer;
    align-items: center;
    justify-content: center;
}

.nav-links {
    display: flex;
    gap: 6px;
    align-items: center;
}

.nav-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.88rem;
    font-weight: 600;
    padding: 8px 13px;
    border-radius: 8px;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.nav-link:hover {
    color: var(--text-main);
    background: rgba(148, 163, 184, 0.1);
}

/* =========================================
   CONTAINER & HERO HEADER
   ========================================= */
.container {
    flex: 1;
    max-width: 780px;
    width: 100%;
    margin: 28px auto;
    padding: 0 16px;
}

.admin-wrapper {
    max-width: 940px;
    width: 100%;
    margin: 24px auto;
    padding: 0 16px;
}

.quiz-wrapper {
    width: 100%;
}

.quiz-header {
    text-align: center;
    margin-bottom: 24px;
}

.hero-pill {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 5px 14px;
    border-radius: 999px;
    background: rgba(56, 189, 248, 0.1);
    border: 1px solid rgba(56, 189, 248, 0.28);
    color: var(--accent-primary);
    font-size: 0.78rem;
    font-weight: 700;
    letter-spacing: 0.3px;
    margin-bottom: 12px;
}

.glow-title {
    font-family: 'Space Grotesk', sans-serif;
    color: var(--text-main);
    font-size: clamp(1.65rem, 5vw, 2.35rem);
    font-weight: 700;
    letter-spacing: -0.6px;
    margin-bottom: 8px;
    word-break: break-word;
}

.subtitle {
    color: var(--text-muted);
    font-size: clamp(0.9rem, 3vw, 1.02rem);
    max-width: 580px;
    margin: 0 auto 12px;
}

/* =========================================
   CARD & DIRECT-START DASHBOARD
   ========================================= */
.card {
    background: var(--bg-card);
    border: 1px solid var(--border-subtle);
    border-radius: 18px;
    padding: clamp(18px, 4vw, 30px);
    box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45), inset 0 1px 0 rgba(255, 255, 255, 0.05);
    backdrop-filter: blur(18px);
    -webkit-backdrop-filter: blur(18px);
    margin-bottom: 20px;
    width: 100%;
}

.start-dashboard-card {
    padding: clamp(20px, 4.5vw, 32px);
}

.dashboard-grid {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.config-section {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.config-header {
    display: flex;
    align-items: center;
    gap: 10px;
}

.config-step {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 24px;
    height: 24px;
    border-radius: 6px;
    background: rgba(99, 102, 241, 0.2);
    border: 1px solid rgba(99, 102, 241, 0.4);
    color: #a5b4fc;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.78rem;
    font-weight: 700;
}

.difficulty-label {
    font-size: 0.92rem;
    color: var(--text-main);
    font-weight: 700;
    letter-spacing: 0.2px;
}

.difficulty-chips {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 10px;
}

.diff-chip {
    background: rgba(30, 41, 59, 0.55);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    border-radius: 12px;
    padding: 11px 12px;
    font-size: 0.88rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 7px;
    transition: all 0.18s ease;
    font-family: inherit;
}

.diff-chip:hover {
    border-color: rgba(148, 163, 184, 0.4);
    color: var(--text-main);
    background: rgba(30, 41, 59, 0.85);
    transform: translateY(-1px);
}

.diff-chip.active {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--accent-primary);
    color: #fff;
    box-shadow: 0 0 18px rgba(56, 189, 248, 0.22);
    font-weight: 700;
}

/* Category Selector Chips */
.category-chips {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 10px;
}

.cat-chip {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    border-radius: 12px;
    padding: 11px 12px;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    transition: all 0.18s ease;
    font-family: inherit;
    text-align: left;
}

.cat-chip:hover {
    border-color: rgba(148, 163, 184, 0.4);
    color: var(--text-main);
    background: rgba(30, 41, 59, 0.85);
    transform: translateY(-1px);
}

.cat-chip.active {
    background: linear-gradient(135deg, rgba(99, 102, 241, 0.22), rgba(56, 189, 248, 0.18));
    border-color: var(--accent-primary);
    color: #fff;
    box-shadow: 0 0 16px rgba(56, 189, 248, 0.2);
    font-weight: 700;
}

.dashboard-footer {
    margin-top: 26px;
    padding-top: 20px;
    border-top: 1px solid var(--border-subtle);
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 16px;
}

.dashboard-rules {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: 10px;
    font-size: 0.82rem;
    color: var(--text-muted);
}

/* =========================================
   BUTTONS
   ========================================= */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 12px 22px;
    border-radius: 12px;
    font-size: 0.95rem;
    font-weight: 700;
    cursor: pointer;
    text-decoration: none;
    transition: all 0.2s ease;
    border: none;
    font-family: inherit;
    min-height: 46px;
    touch-action: manipulation;
}

.btn-primary {
    background: linear-gradient(135deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    color: #fff;
    box-shadow: 0 6px 20px rgba(56, 189, 248, 0.28);
}

.btn-primary:hover:not(:disabled) {
    box-shadow: 0 8px 26px rgba(56, 189, 248, 0.45);
    transform: translateY(-2px);
    filter: brightness(1.06);
}

.btn-launch-quiz {
    width: 100%;
    max-width: 400px;
    font-size: 1.06rem;
    padding: 15px 28px;
    border-radius: 14px;
    letter-spacing: 0.2px;
}

.btn-secondary {
    background: rgba(30, 41, 59, 0.75);
    color: var(--text-main);
    border: 1px solid var(--border-subtle);
}

.btn-secondary:hover:not(:disabled) {
    background: rgba(51, 65, 85, 0.85);
    border-color: rgba(148, 163, 184, 0.4);
}

.btn-danger {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
    border: 1px solid rgba(239, 68, 68, 0.4);
}

.btn-danger:hover:not(:disabled) {
    background: var(--danger);
    color: #fff;
}

.btn-success {
    background: rgba(16, 185, 129, 0.18);
    color: #6ee7b7;
    border: 1px solid rgba(16, 185, 129, 0.4);
}

.btn-success:hover:not(:disabled) {
    background: var(--success);
    color: #06281e;
}

.btn-large {
    font-size: 1.05rem;
    padding: 14px 28px;
    min-height: 52px;
}

.btn-sm {
    font-size: 0.84rem;
    padding: 8px 14px;
    min-height: 36px;
}

.btn-group {
    display: flex;
    gap: 10px;
    justify-content: center;
    margin-top: 18px;
    width: 100%;
}

.btn:disabled {
    opacity: 0.55;
    cursor: not-allowed;
    transform: none !important;
}

/* =========================================
   HUD STATUS, STREAK & PROGRESS BAR
   ========================================= */
.status-panel {
    margin-bottom: 16px;
    width: 100%;
}

.progress-info {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
    gap: 8px;
    flex-wrap: wrap;
}

.hud-pill {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-muted);
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-subtle);
    padding: 5px 12px;
    border-radius: 10px;
}

.hud-center-group {
    display: flex;
    align-items: center;
    gap: 8px;
}

.streak-badge {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 10px;
    background: rgba(30, 41, 59, 0.75);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    transition: all 0.25s ease;
}

.streak-badge.streak-hot {
    background: rgba(245, 158, 11, 0.16);
    border-color: rgba(245, 158, 11, 0.5);
    color: var(--gold-bright);
    box-shadow: 0 0 14px rgba(245, 158, 11, 0.25);
}

.streak-pop {
    animation: streakPopAnim 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
}

@keyframes streakPopAnim {
    0% { transform: scale(1); }
    50% { transform: scale(1.22); }
    100% { transform: scale(1); }
}

.timer-badge {
    font-family: 'Space Grotesk', ui-monospace, monospace;
    font-size: 0.85rem;
    font-weight: 700;
    padding: 5px 12px;
    border-radius: 10px;
    background: rgba(15, 23, 42, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
}

.points-badge {
    font-family: 'Space Grotesk', sans-serif;
    font-size: 0.9rem;
    font-weight: 700;
    padding: 5px 13px;
    border-radius: 10px;
    background: rgba(56, 189, 248, 0.14);
    border: 1px solid rgba(56, 189, 248, 0.35);
    color: var(--accent-primary);
}

.progress-container {
    width: 100%;
    height: 8px;
    background: rgba(30, 41, 59, 0.8);
    border-radius: 999px;
    overflow: hidden;
}

.progress-bar {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--accent-primary) 0%, var(--accent-indigo) 100%);
    box-shadow: 0 0 12px rgba(56, 189, 248, 0.5);
    transition: width 0.35s ease;
}

/* =========================================
   QUESTION CARD & ANSWERS
   ========================================= */
.question-card {
    text-align: center;
}

.question-meta {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 18px;
    gap: 8px;
}

.meta-left {
    display: flex;
    align-items: center;
    gap: 8px;
    flex-wrap: wrap;
}

.badge {
    padding: 5px 11px;
    border-radius: 8px;
    font-size: 0.76rem;
    font-weight: 700;
    background: rgba(99, 102, 241, 0.15);
    border: 1px solid rgba(99, 102, 241, 0.35);
    color: #c7d2fe;
    white-space: nowrap;
}

.badge-diff {
    background: rgba(255, 255, 255, 0.06);
    border: 1px solid rgba(255, 255, 255, 0.16);
    color: var(--text-main);
}

.badge-diff-easy {
    background: rgba(16, 185, 129, 0.14);
    border-color: rgba(16, 185, 129, 0.4);
    color: #34d399;
}

.badge-diff-medium {
    background: rgba(245, 158, 11, 0.14);
    border-color: rgba(245, 158, 11, 0.4);
    color: #fbbf24;
}

.badge-diff-hard {
    background: rgba(239, 68, 68, 0.14);
    border-color: rgba(239, 68, 68, 0.4);
    color: #f87171;
}

.badge-warning {
    background: rgba(245, 158, 11, 0.2);
    border-color: var(--warning);
    color: #fbbf24;
}

.badge-success {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--success);
    color: #34d399;
}

.badge-danger {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--danger);
    color: #f87171;
}

.badge-muted {
    background: rgba(148, 163, 184, 0.12);
    border-color: rgba(148, 163, 184, 0.25);
    color: var(--text-muted);
}

.attempt-badge {
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
    white-space: nowrap;
}

.question-text {
    font-family: 'Space Grotesk', sans-serif;
    font-size: clamp(1.2rem, 4.2vw, 1.5rem);
    line-height: 1.42;
    text-align: center;
    margin: 14px 0 24px;
    color: var(--text-main);
    font-weight: 700;
    word-break: break-word;
}

/* Free-Text Input */
.answer-form {
    display: flex;
    flex-direction: column;
    align-items: center;
    width: 100%;
}

.input-answer {
    width: 100%;
    max-width: 480px;
    padding: 14px 18px;
    font-size: 16px;
    text-align: center;
    border-radius: 12px;
    border: 1.5px solid var(--border-subtle);
    background: rgba(7, 11, 20, 0.65);
    color: var(--text-main);
    outline: none;
    transition: all 0.2s ease;
    font-family: inherit;
    min-height: 50px;
}

.input-answer:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.18);
}

/* Multiple Choice Grid */
.choice-group {
    width: 100%;
    margin-top: 4px;
}

.choice-grid {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 12px;
    width: 100%;
}

.choice-btn {
    background: rgba(30, 41, 59, 0.55);
    border: 1.5px solid var(--border-subtle);
    border-radius: 13px;
    padding: 13px 15px;
    color: var(--text-main);
    font-size: clamp(0.92rem, 3.2vw, 1.0rem);
    font-weight: 600;
    font-family: inherit;
    cursor: pointer;
    text-align: left;
    display: flex;
    align-items: center;
    gap: 12px;
    transition: all 0.18s ease;
    min-height: 56px;
    width: 100%;
    word-break: break-word;
    touch-action: manipulation;
}

.choice-btn:hover:not(:disabled) {
    background: rgba(56, 189, 248, 0.12);
    border-color: var(--accent-primary);
    transform: translateY(-2px);
}

.choice-btn:active:not(:disabled) {
    transform: scale(0.99);
}

.choice-letter {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 30px;
    height: 30px;
    background: rgba(56, 189, 248, 0.14);
    border: 1px solid rgba(56, 189, 248, 0.35);
    border-radius: 8px;
    color: var(--accent-primary);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 0.85rem;
    flex-shrink: 0;
}

.choice-text {
    flex: 1;
}

.choice-selected {
    border-color: var(--accent-primary);
    background: rgba(56, 189, 248, 0.22);
}

.choice-correct {
    background: rgba(16, 185, 129, 0.22) !important;
    border-color: #10b981 !important;
    color: #6ee7b7 !important;
    box-shadow: 0 0 16px rgba(16, 185, 129, 0.35) !important;
}

.choice-wrong {
    background: rgba(239, 68, 68, 0.22) !important;
    border-color: #ef4444 !important;
    color: #fca5a5 !important;
    box-shadow: 0 0 16px rgba(239, 68, 68, 0.3) !important;
}

.hint-box {
    margin-top: 16px;
    padding: 13px 16px;
    border-radius: 12px;
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--gold);
    font-size: 0.9rem;
    color: var(--gold-soft);
    text-align: left;
    word-break: break-word;
}

.feedback-box {
    margin-top: 16px;
    font-size: clamp(0.95rem, 3.5vw, 1.08rem);
    text-align: center;
    min-height: 28px;
    font-weight: 700;
    word-break: break-word;
}

.feedback-correct {
    color: #34d399;
}

.feedback-wrong {
    color: #f87171;
}

.feedback-revealed {
    color: var(--gold-bright);
    font-size: 0.92rem;
    margin-top: 6px;
}

/* =========================================
   ANIMATIONS
   ========================================= */
.sparkle-effect {
    animation: sparkle-glow 0.7s ease forwards;
}

@keyframes sparkle-glow {
    0% { box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45); }
    50% { box-shadow: 0 0 30px rgba(16, 185, 129, 0.45); border-color: #10b981; }
    100% { box-shadow: 0 20px 50px rgba(0, 0, 0, 0.45); }
}

.shake-effect {
    animation: shake 0.4s ease;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    20%, 60% { transform: translateX(-6px); }
    40%, 80% { transform: translateX(6px); }
}

/* =========================================
   FINALE & LEADERBOARD
   ========================================= */
.finale-card {
    text-align: center;
}

.finale-header {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 16px;
}

.sparkle-icon {
    font-size: 1.5rem;
}

.score-banner {
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-subtle);
    border-radius: 14px;
    padding: 18px;
    margin-bottom: 20px;
}

.score-highlight {
    font-size: clamp(1.05rem, 4vw, 1.28rem);
}

.gold-text {
    color: var(--accent-primary);
    font-family: 'Space Grotesk', sans-serif;
    font-weight: 700;
    font-size: 1.3rem;
}

.reward-box {
    background: rgba(15, 23, 42, 0.7);
    border-radius: 14px;
    padding: 20px 18px;
    margin-bottom: 20px;
    border-left: 4px solid var(--accent-primary);
    text-align: left;
}

.reward-box h2 {
    color: var(--text-main);
    font-size: clamp(1.15rem, 4vw, 1.4rem);
    margin-bottom: 10px;
}

.reward-description {
    font-size: clamp(0.94rem, 3.3vw, 1.02rem);
    line-height: 1.6;
    color: var(--text-muted);
}

.time-highlight {
    margin-top: 8px;
    font-size: 0.95rem;
    color: var(--text-muted);
}

.tier-box {
    position: relative;
    border-radius: 16px;
    padding: 24px 20px;
    margin: 20px 0;
    border: 1px solid var(--border-subtle);
    background: radial-gradient(circle at top, rgba(56, 189, 248, 0.1) 0%, rgba(15, 23, 42, 0.85) 100%);
    text-align: center;
}

.tier-badge-container {
    display: flex;
    justify-content: center;
    margin-bottom: 14px;
}

.tier-grade-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 64px;
    height: 64px;
    border-radius: 16px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 2rem;
    font-weight: 800;
    box-shadow: 0 8px 20px rgba(0, 0, 0, 0.4);
    border: 2px solid;
}

.tier-outstanding {
    background: linear-gradient(135deg, #fbbf24, #d97706);
    color: #090d16;
    border-color: #fde68a;
}

.tier-exceeds {
    background: linear-gradient(135deg, #34d399, #059669);
    color: #090d16;
    border-color: #a7f3d0;
}

.tier-acceptable {
    background: linear-gradient(135deg, #38bdf8, #2563eb);
    color: #ffffff;
    border-color: #bae6fd;
}

.tier-poor {
    background: linear-gradient(135deg, #fb923c, #ea580c);
    color: #ffffff;
    border-color: #fed7aa;
}

.tier-troll {
    background: linear-gradient(135deg, #64748b, #334155);
    color: #fca5a5;
    border-color: #ef4444;
}

.tier-subtitle {
    color: var(--accent-primary);
    font-weight: 600;
    margin-bottom: 10px;
    font-size: 0.95rem;
}

.leaderboard-entry-card {
    background: rgba(15, 23, 42, 0.7);
    border: 1px solid var(--border-subtle);
    padding: 22px;
    margin-top: 20px;
    text-align: center;
}

.input-with-btn {
    display: flex;
    gap: 10px;
    max-width: 500px;
    margin: 0 auto;
    width: 100%;
}

.input-with-btn .input-text {
    flex: 1;
    text-align: left;
}

.btn-dice {
    background: rgba(30, 41, 59, 0.8);
    border: 1px solid var(--border-subtle);
    color: var(--text-main);
    padding: 0 14px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 0.9rem;
    font-family: inherit;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    justify-content: center;
    transition: all 0.2s ease;
    min-height: 46px;
    white-space: nowrap;
}

.btn-dice:hover {
    background: rgba(56, 189, 248, 0.15);
    border-color: var(--accent-primary);
    color: var(--accent-primary);
}

.diff-filter-tabs {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    justify-content: center;
    margin: 16px 0;
}

.diff-filter-tabs .tab-btn {
    border-radius: 10px;
    padding: 8px 16px;
    font-size: 0.86rem;
    background: rgba(30, 41, 59, 0.6);
    border: 1px solid var(--border-subtle);
    color: var(--text-muted);
    cursor: pointer;
    font-weight: 600;
}

.diff-filter-tabs .tab-btn.active {
    background: rgba(56, 189, 248, 0.16);
    border-color: var(--accent-primary);
    color: #fff;
}

.table-responsive {
    width: 100%;
    overflow-x: auto;
    -webkit-overflow-scrolling: touch;
}

.lb-table {
    width: 100%;
    border-collapse: collapse;
    text-align: left;
    font-size: 0.9rem;
}

.lb-table th {
    background: rgba(30, 41, 59, 0.7);
    color: var(--text-muted);
    font-weight: 700;
    padding: 11px 12px;
    border-bottom: 1px solid var(--border-subtle);
    white-space: nowrap;
}

.lb-table td {
    padding: 11px 12px;
    border-bottom: 1px solid rgba(148, 163, 184, 0.1);
    color: var(--text-main);
}

.lb-table tr:hover td {
    background: rgba(56, 189, 248, 0.05);
}

/* =========================================
   FORMS & INPUTS
   ========================================= */
.magic-form {
    display: flex;
    flex-direction: column;
    gap: 16px;
    text-align: left;
    width: 100%;
}

.form-group {
    display: flex;
    flex-direction: column;
    gap: 6px;
    width: 100%;
}

.form-group label {
    font-size: 0.88rem;
    font-weight: 700;
    color: var(--text-main);
}

.input-text, .textarea, select.input-text {
    padding: 12px 14px;
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
    background: rgba(7, 11, 20, 0.65);
    color: var(--text-main);
    font-size: 16px;
    font-family: inherit;
    outline: none;
    width: 100%;
    min-height: 46px;
}

.input-text:focus, .textarea:focus, select.input-text:focus {
    border-color: var(--accent-primary);
    box-shadow: 0 0 0 3px rgba(56, 189, 248, 0.16);
}

.input-text-sm {
    padding: 8px 10px;
    border-radius: 8px;
    border: 1px solid var(--border-subtle);
    background: rgba(7, 11, 20, 0.55);
    color: var(--text-main);
    font-size: 15px;
    min-height: 38px;
    width: 100%;
}

.field-help {
    font-size: 0.8rem;
    color: var(--text-muted);
}

.info-alert {
    background: rgba(56, 189, 248, 0.1);
    border-left: 4px solid var(--accent-primary);
    padding: 14px;
    border-radius: 10px;
    margin-bottom: 20px;
    font-size: 0.88rem;
    line-height: 1.5;
    color: var(--text-main);
}

.alert-danger {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid var(--danger);
    color: #fca5a5;
    padding: 12px;
    border-radius: 10px;
    margin-bottom: 16px;
    text-align: center;
    font-size: 0.9rem;
}

/* =========================================
   ADMIN COCKPIT
   ========================================= */
.admin-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 20px;
    flex-wrap: wrap;
    gap: 12px;
}

.admin-top-actions {
    display: flex;
    gap: 8px;
}

.tabs-nav {
    display: flex;
    gap: 6px;
    border-bottom: 1px solid var(--border-subtle);
    margin-bottom: 20px;
    overflow-x: auto;
    scrollbar-width: none;
    padding-bottom: 2px;
}

.tabs-nav::-webkit-scrollbar {
    display: none;
}

.tab-btn {
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid transparent;
    color: var(--text-muted);
    padding: 10px 14px;
    border-radius: 10px 10px 0 0;
    cursor: pointer;
    font-size: 0.85rem;
    font-family: inherit;
    font-weight: 700;
    display: inline-flex;
    align-items: center;
    gap: 6px;
    white-space: nowrap;
    flex-shrink: 0;
    min-height: 42px;
}

.tab-btn.active {
    background: var(--bg-card);
    color: var(--accent-primary);
    border-color: var(--border-subtle);
    border-bottom-color: transparent;
}

.tab-content {
    display: none;
}

.tab-content.active {
    display: block;
}

.question-admin-card {
    margin-bottom: 14px;
    padding: 18px;
}

.q-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 10px;
    font-size: 0.8rem;
    flex-wrap: wrap;
    gap: 8px;
}

.highlight-answer {
    color: var(--accent-primary);
    font-weight: 700;
    background: rgba(56, 189, 248, 0.1);
    padding: 2px 8px;
    border-radius: 6px;
    word-break: break-word;
}

.test-matcher-box {
    margin-top: 12px;
    padding: 12px;
    background: rgba(7, 11, 20, 0.45);
    border-radius: 10px;
    border: 1px solid var(--border-subtle);
}

.test-input-group {
    display: flex;
    gap: 8px;
    margin-top: 6px;
}

.test-result-feedback {
    margin-top: 8px;
    font-size: 0.85rem;
    word-break: break-word;
}

.q-actions {
    display: flex;
    gap: 8px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.inline-edit-form {
    margin-top: 14px;
    padding-top: 14px;
    border-top: 1px solid var(--border-subtle);
}

.empty-state {
    text-align: center;
    padding: 30px 10px;
    color: var(--text-muted);
}

/* =========================================
   FOOTER & LEGAL
   ========================================= */
.footer {
    text-align: center;
    padding: 20px 16px;
    color: var(--text-muted);
    font-size: 0.8rem;
    border-top: 1px solid var(--border-subtle);
    margin-top: auto;
}

.footer-links {
    margin-top: 10px;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    flex-wrap: wrap;
}

.footer-link {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.8rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: 8px;
    background: rgba(30, 41, 59, 0.5);
    border: 1px solid var(--border-subtle);
    transition: all 0.2s ease;
}

.footer-link:hover {
    color: var(--text-main);
    border-color: var(--accent-primary);
}

.footer-sep {
    display: none;
}

.legal-card {
    text-align: left;
    max-width: 760px;
    margin: 0 auto;
}

.legal-content {
    margin-top: 20px;
    line-height: 1.65;
    color: var(--text-main);
}

.legal-content h3 {
    color: var(--accent-primary);
    margin-top: 22px;
    margin-bottom: 8px;
    font-size: 1.15rem;
    border-bottom: 1px solid var(--border-subtle);
    padding-bottom: 4px;
}

.legal-content p, .legal-content ul {
    margin-bottom: 14px;
    color: var(--text-muted);
    font-size: 0.95rem;
}

.legal-content ul {
    padding-left: 20px;
}

.legal-content code {
    background: rgba(0, 0, 0, 0.35);
    padding: 2px 6px;
    border-radius: 4px;
    color: var(--accent-primary);
    font-size: 0.88em;
}

.hidden {
    display: none !important;
}

/* =========================================
   MOBILE RESPONSIVENESS
   ========================================= */
@media (max-width: 680px) {
    .container {
        margin: 14px auto 25px;
        padding: 0 12px;
    }

    .card {
        padding: 18px 14px;
        border-radius: 14px;
    }

    .menu-toggle-btn {
        display: inline-flex;
    }

    .nav-links {
        display: none;
        position: absolute;
        top: var(--header-height);
        left: 0;
        right: 0;
        background: rgba(7, 11, 20, 0.98);
        border-bottom: 1px solid var(--border-subtle);
        flex-direction: column;
        padding: 14px 16px;
        gap: 8px;
        box-shadow: 0 16px 32px rgba(0, 0, 0, 0.75);
    }

    .nav-links.nav-open {
        display: flex;
    }

    .nav-link {
        width: 100%;
        padding: 12px 14px;
        font-size: 0.96rem;
        background: rgba(30, 41, 59, 0.5);
        border: 1px solid var(--border-subtle);
    }

    .difficulty-chips {
        grid-template-columns: repeat(2, 1fr);
    }

    .category-chips {
        grid-template-columns: repeat(2, 1fr);
    }

    .choice-grid {
        grid-template-columns: 1fr;
        gap: 10px;
    }

    .btn-group {
        flex-direction: column;
    }

    .btn-group .btn {
        width: 100%;
    }

    .input-with-btn {
        flex-direction: column;
    }

    .test-input-group {
        flex-direction: column;
    }
}

@media (max-width: 420px) {
    .category-chips {
        grid-template-columns: 1fr;
    }
}