:root {
    /* Colors */
    --primary: #6366f1;
    --primary-light: #818cf8;
    --primary-dark: #4f46e5;
    --accent: #a855f7;
    --bg-main: #020617;
    --bg-card: rgba(30, 41, 59, 0.4);
    --text-main: #f8fafc;
    --text-muted: #94a3b8;

    /* Glassmorphism Layers */
    --glass-bg-base: rgba(255, 255, 255, 0.03);
    --glass-bg-elevated: rgba(255, 255, 255, 0.07);
    --glass-border: rgba(255, 255, 255, 0.08);
    --glass-border-bright: rgba(255, 255, 255, 0.15);

    /* Standardization Tokens */
    --radius-xl: 32px;
    --radius-lg: 24px;
    --radius-md: 16px;
    --radius-sm: 12px;

    --transition-premium: all 0.4s cubic-bezier(0.3, 1, 0.5, 1);
    --shadow-premium: 0 20px 50px rgba(0, 0, 0, 0.4);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Inter', system-ui, -apple-system, sans-serif;
}

body {
    background: radial-gradient(circle at 50% 0%, #17153a 0%, #020617 100%);
    color: var(--text-main);
    min-height: 100vh;
    padding: 2rem;
    line-height: 1.6;
    overflow-x: hidden;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
}

/* Header & Navigation */
.app-header {
    margin-bottom: 4rem;
}

.header-main {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 2rem;
}

.logo-area h1 {
    font-size: 2.5rem;
    font-weight: 800;
    letter-spacing: -1px;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.subtitle {
    color: var(--text-muted);
    font-size: 0.95rem;
}

.header-actions {
    display: flex;
    gap: 1rem;
    align-items: center;
}

.nav-wrapper {
    display: flex;
    justify-content: space-between;
    align-items: center;
    background: var(--glass-bg-base);
    padding: 0.6rem;
    border-radius: var(--radius-lg);
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
}

.tabs-container {
    display: flex;
    gap: 0.5rem;
}

.tab-btn {
    padding: 0.8rem 2rem;
    border: none;
    background: transparent;
    color: var(--text-muted);
    font-weight: 700;
    cursor: pointer;
    border-radius: var(--radius-md);
    transition: var(--transition-premium);
    display: flex;
    align-items: center;
    gap: 0.6rem;
    font-size: 0.95rem;
}

.tab-btn.active {
    background: var(--primary);
    color: white;
    box-shadow: 0 4px 15px rgba(99, 102, 241, 0.4);
}

.badge {
    background: rgba(0, 0, 0, 0.3);
    padding: 0.2rem 0.5rem;
    border-radius: 8px;
    font-size: 0.75rem;
}

.search-wrapper {
    position: relative;
    width: 350px;
    margin-right: 0.5rem;
}

#search-input {
    width: 100%;
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--glass-border);
    padding: 0.8rem 1.2rem 0.8rem 2.8rem;
    border-radius: 14px;
    color: white;
    outline: none;
    transition: all 0.3s;
}

#search-input:focus {
    border-color: var(--primary);
    background: rgba(15, 23, 42, 0.8);
}

.search-icon {
    position: absolute;
    left: 1rem;
    top: 50%;
    transform: translateY(-50%);
    font-size: 0.9rem;
    opacity: 0.5;
}

/* Buttons */
.glass-btn {
    padding: 0.8rem 1.8rem;
    border-radius: var(--radius-md);
    border: 1px solid var(--glass-border);
    background: var(--glass-bg-base);
    color: white;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition-premium);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    font-size: 0.95rem;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
}

.glass-btn.primary {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    border: none;
}

.glass-btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 10px 20px rgba(0, 0, 0, 0.2);
}

.glass-btn:disabled {
    opacity: 0.3;
    cursor: not-allowed;
    transform: none;
}

.icon-btn {
    width: 48px;
    height: 48px;
    border-radius: var(--radius-md);
    background: var(--glass-bg-base);
    border: 1px solid var(--glass-border);
    color: white;
    font-size: 1.2rem;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-premium);
}

.icon-btn:hover {
    background: var(--glass-border);
    transform: rotate(45deg);
}

/* Grid & Cards */
.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 3rem;
    min-height: 400px;
}

@keyframes cardReveal {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.card-container {
    perspective: 2000px;
    height: 420px;
    animation: cardReveal 0.6s cubic-bezier(0.3, 1, 0.5, 1);
    position: relative;
    z-index: 1;
}

.card-container:has(.card.is-flipped) {
    z-index: 10;
}

.card {
    position: relative;
    width: 100%;
    height: 100%;
    transition: transform 0.8s cubic-bezier(0.34, 1.56, 0.64, 1);
    transform-style: preserve-3d;
    cursor: pointer;
}

.card:hover {
    transform: translateY(-10px);
}

.card.is-flipped {
    transform: rotateY(180deg);
}

.card.is-flipped:hover {
    transform: rotateY(180deg) translateY(-10px);
}

.card-face {
    position: absolute;
    width: 100%;
    height: 100%;
    backface-visibility: hidden;
    -webkit-backface-visibility: hidden;
    border-radius: var(--radius-lg);
    padding: 2.5rem;
    background: var(--bg-card);
    border: 1px solid var(--glass-border);
    backdrop-filter: blur(25px);
    -webkit-backdrop-filter: blur(25px);
    box-shadow: var(--shadow-premium);
    overflow: hidden;
    transition: var(--transition-premium);
    /* High performance 3D layering */
    transform-style: preserve-3d;
}

.card-front {
    position: absolute;
    top: 0;
    left: 0;
    transform: rotateY(0deg) translateZ(2px);
    z-index: 2;
}

.card-back {
    position: absolute;
    top: 0;
    left: 0;
    transform: rotateY(180deg) translateZ(2px);
    display: flex;
    flex-direction: column;
    justify-content: center;
    text-align: center;
    z-index: 1;
}

.card.is-flipped .card-front {
    z-index: 1;
    pointer-events: none;
}

.card.is-flipped .card-back {
    z-index: 2;
    pointer-events: auto;
}

/* Mastery Level Visual Evolution */
.mastery-badge {
    position: absolute;
    top: 1.5rem;
    left: 1.5rem;
    background: rgba(0, 0, 0, 0.4);
    padding: 0.3rem 0.8rem;
    border-radius: 20px;
    font-size: 0.7rem;
    font-weight: 800;
    color: var(--text-muted);
    border: 1px solid var(--glass-border);
    z-index: 10;
    text-transform: uppercase;
    letter-spacing: 1px;
}

/* Lvl 1: Seedling (Default) */
.mastery-lvl-1 .card-face {
    border-color: rgba(148, 163, 184, 0.2);
}

/* Lvl 2: Sprout (Green) */
.mastery-lvl-2 .card-face {
    border-color: rgba(34, 197, 94, 0.3);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.4) 0%, rgba(20, 83, 45, 0.1) 100%);
}

.mastery-lvl-2 .mastery-badge {
    color: #4ade80;
    border-color: rgba(34, 197, 94, 0.4);
}

/* Lvl 3: Sapling (Primary/Blue) */
.mastery-lvl-3 .card-face {
    border-color: rgba(99, 102, 241, 0.4);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.4) 0%, rgba(49, 46, 129, 0.1) 100%);
    box-shadow: 0 0 30px rgba(99, 102, 241, 0.1);
}

.mastery-lvl-3 .mastery-badge {
    color: var(--primary-light);
    border-color: rgba(99, 102, 241, 0.5);
}

/* Lvl 4: Mastered (Gold) */
@keyframes masterPulse {
    0% {
        box-shadow: 0 0 20px rgba(234, 179, 8, 0.1), var(--shadow-premium);
    }

    50% {
        box-shadow: 0 0 40px rgba(234, 179, 8, 0.3), var(--shadow-premium);
    }

    100% {
        box-shadow: 0 0 20px rgba(234, 179, 8, 0.1), var(--shadow-premium);
    }
}

.mastery-lvl-4 .card-face {
    border-color: rgba(234, 179, 8, 0.5);
    background: linear-gradient(135deg, rgba(30, 41, 59, 0.5) 0%, rgba(113, 63, 18, 0.15) 100%);
    animation: masterPulse 3s infinite ease-in-out;
}

.mastery-lvl-4 .mastery-badge {
    color: #facc15;
    background: rgba(113, 63, 18, 0.3);
    border-color: rgba(234, 179, 8, 0.6);
    box-shadow: 0 0 10px rgba(234, 179, 8, 0.3);
}

.learned-toggle {
    position: absolute;
    top: 1.5rem;
    right: 1.5rem;
    padding: 0.5rem 1rem;
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    font-size: 0.75rem;
    font-weight: 800;
    cursor: pointer;
    transition: var(--transition-premium);
    z-index: 10;
}

.card.is-learned .learned-toggle {
    background: rgba(34, 197, 94, 0.2);
    border-color: #22c55e;
    color: #4ade80;
}

.card-front-main {
    width: 100%;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    padding: 1rem;
}

.pictogram-container {
    flex: 1;
    width: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin-bottom: 2rem;
    overflow: visible;
}

.pictogram-container svg {
    width: auto;
    height: auto;
    max-width: 100%;
    max-height: 85%;
    filter: drop-shadow(0 0 15px rgba(99, 102, 241, 0.3));
    transition: transform 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

.card:hover .pictogram-container svg {
    transform: scale(1.05);
}

.visual-label {
    margin-top: auto;
    padding-bottom: 1.5rem;
    width: 100%;
    text-align: center;
    font-size: 1.2rem;
    font-weight: 800;
    letter-spacing: 4px;
    text-transform: uppercase;
    color: var(--text-muted);
    opacity: 0.4;
    transition: all 0.3s;
    pointer-events: none;
}

.card:hover .visual-label {
    opacity: 0.8;
    letter-spacing: 6px;
    color: var(--primary-light);
}

.word-title {
    font-size: 2rem;
    font-weight: 800;
    color: var(--primary-light);
    margin-bottom: 0.5rem;
}

.meaning {
    font-size: 1.3rem;
    font-weight: 600;
    color: #e2e8f0;
    margin-bottom: 2rem;
}

.example {
    font-size: 1rem;
    color: var(--text-muted);
    font-style: italic;
    line-height: 1.6;
}

.example-cn {
    font-size: 0.9rem;
    color: rgba(255, 255, 255, 0.4);
    margin-top: 0.5rem;
}

.audio-controls {
    display: flex;
    gap: 1rem;
    justify-content: center;
    margin-top: 1.5rem;
    position: relative;
    z-index: 100;
    /* Ensure it's above everything on the card face */
}

.play-btn {
    background: rgba(255, 255, 255, 0.05);
    border: 1px solid var(--glass-border-bright);
    padding: 0.8rem 1.5rem;
    border-radius: 12px;
    color: white;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    position: relative;
    z-index: 200;
    pointer-events: auto;
}

.play-btn:hover {
    background: var(--primary);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.4);
}

/* Modals */
.modal {
    display: none;
    position: fixed;
    z-index: 2000;
    inset: 0;
    background: rgba(2, 6, 23, 0.8);
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    justify-content: center;
    align-items: center;
}

.modal.active {
    display: flex;
}

.modal-content.panel {
    background: rgba(15, 23, 42, 0.96);
    border: 1px solid var(--glass-border-bright);
    border-radius: var(--radius-xl);
    padding: 2.5rem;
    width: 95%;
    max-width: 600px;
    max-height: 90vh;
    overflow-y: auto;
    box-shadow: 0 50px 100px rgba(0, 0, 0, 0.7);
    -webkit-backdrop-filter: blur(30px);
    backdrop-filter: blur(30px);
}

.settings-panel h3 {
    margin-bottom: 2rem;
    text-align: center;
}

.settings-section {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.settings-section h4 {
    margin-bottom: 1.2rem;
    color: var(--primary-light);
    font-size: 1rem;
    border-left: 3px solid var(--primary);
    padding-left: 0.8rem;
}

.help-menu-popup {
    display: none;
    position: fixed;
    background: rgba(15, 23, 42, 0.95);
    border: 1px solid var(--glass-border-bright);
    border-radius: var(--radius-md);
    padding: 0.5rem;
    z-index: 5000;
    box-shadow: 0 10px 30px rgba(0, 0, 0, 0.5);
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    min-width: 220px;
    animation: fadeIn 0.2s ease;
}

.help-menu-popup.active {
    display: block;
}

.help-menu-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.8rem 1rem;
    color: var(--text-main);
    text-decoration: none;
    font-size: 0.85rem;
    border-radius: 8px;
    transition: all 0.2s;
    cursor: pointer;
}

.help-menu-item:hover {
    background: var(--primary);
    color: white;
}

.help-menu-item .url {
    font-size: 0.7rem;
    opacity: 0.5;
    margin-left: 1rem;
}

.help-menu-item:hover .url {
    opacity: 0.8;
}

.help-menu-header {
    padding: 0.5rem 1rem;
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 800;
    border-bottom: 1px solid var(--glass-border);
    margin-bottom: 0.3rem;
}

.modal-actions {
    display: flex;
    gap: 1rem;
    margin-top: 2.5rem;
}

.help-hint {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 16px;
    height: 16px;
    background: rgba(255, 255, 255, 0.1);
    border: 1px solid var(--glass-border);
    border-radius: 50%;
    font-size: 10px;
    color: var(--primary-light);
    cursor: help;
    transition: var(--transition-premium);
}

.help-hint:hover {
    background: var(--primary);
    color: white;
    transform: scale(1.1);
}

.form-group input,
.form-group select {
    width: 100%;
    padding: 1.1rem 1.4rem;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-md);
    color: white;
    font-size: 1rem;
    outline: none;
    transition: var(--transition-premium);
}

.form-group input:focus,
.form-group select:focus {
    border-color: var(--primary);
    background: rgba(255, 255, 255, 0.08);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.15);
}

.form-group select option,
.form-group select optgroup {
    background: #0f172a;
    color: white;
}

.form-group select optgroup {
    font-style: normal;
    color: var(--text-muted);
}

/* Custom Scrollbar for Modal content */
.modal-content::-webkit-scrollbar {
    width: 6px;
}

.modal-content::-webkit-scrollbar-track {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-thumb {
    background: var(--primary);
    border-radius: 10px;
}

.modal-content::-webkit-scrollbar-thumb:hover {
    background: var(--primary-light);
}

.modal-actions .primary-btn,
.modal-actions .secondary-btn {
    flex: 1;
    padding: 1.2rem;
    font-size: 1.1rem;
    font-weight: 900;
    border-radius: var(--radius-md);
}

.challenge-mode-btn {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    padding: 1.5rem;
    border-radius: var(--radius-lg);
    color: white;
    text-align: left;
    cursor: pointer;
    transition: var(--transition-premium);
    margin-bottom: 1.2rem;
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.challenge-mode-btn strong {
    font-size: 1.2rem;
    color: var(--primary-light);
}

.challenge-mode-btn span {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.challenge-mode-btn:hover {
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--primary);
    transform: scale(1.02);
}

/* Gacha Challenge View */
.modal.game-view {
    background: radial-gradient(circle at 50% 50%, #0f172a 0%, #020617 100%);
    align-items: center;
    padding: 2rem;
    overflow-y: hidden;
}

.game-container {
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    position: relative;
    padding: 0;
}

.game-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding-bottom: 1rem;
    border-bottom: 1px solid var(--glass-border);
}

.game-stats {
    font-size: 1.1rem;
    font-weight: 900;
    color: var(--primary-light);
    background: rgba(99, 102, 241, 0.1);
    padding: 0.6rem 1.8rem;
    border-radius: var(--radius-xl);
    border: 1px solid var(--glass-border-bright);
}

.gacha-grid {
    grid-template-columns: repeat(3, 1fr);
    gap: 1.5rem 2rem;
    justify-items: center;
    padding: 0.5rem;
}

.game-view .card-container {
    height: 380px;
    width: 100%;
}

.game-view .card {
    height: 300px;
}

.game-view .card-face {
    padding: 2.2rem;
    border-radius: var(--radius-lg);
}

.game-view .word-title {
    font-size: 1.8rem;
    font-weight: 900;
}

.game-view .meaning {
    font-size: 1.2rem;
    margin-bottom: 1.5rem;
}

.game-view .learned-toggle {
    top: 1.2rem;
    right: 1.2rem;
}

/* Game Card Variants */
.game-card .card-face {
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.6);
    border-width: 2px;
}

/* Mystery Glow Animation */
@keyframes cardGlowPulse {
    0% {
        border-color: var(--glass-border);
        box-shadow: 0 0 0 rgba(99, 102, 241, 0);
    }

    50% {
        border-color: var(--primary);
        box-shadow: 0 0 30px rgba(99, 102, 241, 0.3);
    }

    100% {
        border-color: var(--glass-border);
        box-shadow: 0 0 0 rgba(99, 102, 241, 0);
    }
}

.game-card.hidden-card:not(.locked) .card-face {
    animation: cardGlowPulse 2s infinite ease-in-out;
    border-width: 2px;
}

.game-card.hidden-card .card-front {
    background: linear-gradient(135deg, #1e293b 0%, #0f172a 100%);
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1.5rem;
}

.game-card.hidden-card .card-front::after {
    content: "?";
    font-size: 5rem;
    font-weight: 900;
    color: var(--primary-light);
    opacity: 0.3;
}

.card-hint {
    font-size: 0.9rem;
    color: var(--text-muted);
    font-weight: 600;
    letter-spacing: 1px;
}

.game-card.hidden-card .card-front *:not(.card-hint) {
    display: none !important;
}

/* Assessment Buttons */
.game-card.locked .assessment-controls {
    display: none !important;
}

.game-card.locked .card {
    cursor: default;
}

.assessment-controls {
    display: flex;
    gap: 1rem;
    margin-top: 1.5rem;
    opacity: 0;
    transform: translateY(10px);
    transition: all 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    width: 100%;
}

.card.is-flipped+.assessment-controls {
    opacity: 1;
    transform: translateY(0);
}

.assess-btn {
    flex: 1;
    padding: 1rem;
    border: none;
    border-radius: 12px;
    font-weight: 800;
    cursor: pointer;
    transition: all 0.2s;
    font-size: 1rem;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
}

.assess-btn.know {
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    border: 1px solid rgba(34, 197, 94, 0.3);
}

.assess-btn.know:hover {
    background: #22c55e;
    color: white;
    box-shadow: 0 0 20px rgba(34, 197, 94, 0.4);
}

.assess-btn.unknown {
    background: rgba(239, 68, 68, 0.1);
    color: #f87171;
    border: 1px solid rgba(239, 68, 68, 0.3);
}

.assess-btn.unknown:hover {
    background: #ef4444;
    color: white;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

/* Feedback Animations */
@keyframes knowPulse {
    0% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0.7);
    }

    70% {
        box-shadow: 0 0 0 20px rgba(34, 197, 94, 0);
    }

    100% {
        box-shadow: 0 0 0 0 rgba(34, 197, 94, 0);
    }
}

@keyframes unknownShake {

    0%,
    100% {
        transform: translateX(0);
    }

    25% {
        transform: translateX(-10px);
    }

    75% {
        transform: translateX(10px);
    }
}

.game-card.effect-know .card-face {
    animation: knowPulse 0.6s ease-out;
    border-color: #22c55e;
}

.game-card.effect-unknown .card {
    animation: unknownShake 0.4s ease-in-out;
}

.game-card.effect-unknown .card-face {
    border-color: #ef4444;
    opacity: 0.6;
    filter: grayscale(0.5);
}

/* Score Overlay */
.result-overlay {
    display: none;
    position: fixed;
    inset: 0;
    background: rgba(2, 6, 23, 0.9);
    z-index: 3000;
    justify-content: center;
    align-items: center;
    -webkit-backdrop-filter: blur(20px);
    backdrop-filter: blur(20px);
    animation: fadeIn 0.5s ease;
}

.result-overlay.active {
    display: flex;
}

.result-box {
    text-align: center;
    padding: 3.5rem;
    background: rgba(15, 23, 42, 0.98);
    border: 1px solid var(--glass-border-bright);
    border-radius: var(--radius-xl);
    box-shadow: 0 60px 120px rgba(0, 0, 0, 0.8);
    transform: scale(0.9);
    animation: resultScaleIn 0.6s cubic-bezier(0.34, 1.56, 0.64, 1) forwards;
    max-width: 520px;
    width: 95%;
}

@keyframes resultScaleIn {
    to {
        transform: scale(1);
    }
}

#result-icon {
    font-size: 6rem;
    margin-bottom: 1.5rem;
    display: block;
}

.final-score {
    font-size: 6rem;
    font-weight: 900;
    margin: 0.5rem 0;
    background: linear-gradient(135deg, #fff 0%, var(--primary-light) 100%);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
}

.result-actions {
    display: flex;
    gap: 1.5rem;
    margin-top: 2.5rem;
    justify-content: center;
}

.result-actions button {
    padding: 1.1rem 2.2rem;
    border-radius: var(--radius-md);
    font-size: 1.1rem;
    font-weight: 900;
    cursor: pointer;
    transition: var(--transition-premium);
    min-width: 170px;
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.8rem;
}

.primary-btn {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%);
    color: white;
    border: none;
    box-shadow: 0 10px 30px rgba(99, 102, 241, 0.4);
}

.primary-btn:hover {
    transform: translateY(-5px) scale(1.05);
    box-shadow: 0 20px 40px rgba(99, 102, 241, 0.6);
}

.secondary-btn {
    background: rgba(255, 255, 255, 0.05);
    color: #cbd5e1;
    border: 1px solid var(--glass-border);
}

/* Pagination & Toast */
.pagination-container {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    margin-top: 4rem;
    padding: 2rem 1rem;
}

#pagination-numbers {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    align-items: center;
    gap: 0.4rem;
    max-width: 100%;
}

.page-num {
    width: 44px;
    height: 44px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--radius-sm);
    background: var(--glass-bg-base);
    border: 1px solid var(--glass-border);
    cursor: pointer;
    font-weight: 800;
    transition: var(--transition-premium);
}

.page-num.active {
    background: var(--primary);
    color: white;
}

.page-num.dots {
    background: transparent;
    border: none;
    cursor: default;
    width: auto;
    padding: 0 0.5rem;
}

.page-num.dots:hover {
    transform: none;
    box-shadow: none;
}

.glass-btn.small {
    padding: 0.6rem 1.2rem;
    font-size: 0.85rem;
    min-width: 44px;
    height: 44px;
}

#toast-container {
    position: fixed;
    top: 2rem;
    left: 50%;
    transform: translateX(-50%);
    z-index: 3000;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
    pointer-events: none;
}

.toast {
    background: rgba(15, 23, 42, 0.9);
    border: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    border-radius: 16px;
    color: white;
    -webkit-backdrop-filter: blur(10px);
    backdrop-filter: blur(10px);
    animation: toastSlideIn 0.4s cubic-bezier(0.34, 1.56, 0.64, 1);
    pointer-events: auto;
}

/* Responsive */
@media (max-width: 900px) {
    .gacha-grid {
        grid-template-columns: repeat(2, 1fr);
    }
}

@media (max-width: 600px) {
    .gacha-grid {
        grid-template-columns: 1fr;
    }

    .game-header {
        flex-direction: column;
        gap: 1rem;
    }
}

/* --- Cinema Mode --- */
.modal.cinema-mode {
    background: radial-gradient(circle at 50% 50%, #020617 0%, #000 100%);
    display: none;
    z-index: 4000;
}

.cinema-mode.active {
    display: flex;
}

.cinema-container {
    width: 100vw;
    height: 100vh;
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
    position: relative;
    overflow: hidden;
}

.cinema-container::before {
    content: "";
    position: absolute;
    width: 600px;
    height: 600px;
    background: radial-gradient(circle, var(--primary) 0%, transparent 70%);
    filter: blur(100px);
    opacity: 0.15;
    z-index: 0;
    animation: ambientFloat 10s infinite alternate ease-in-out;
}

@keyframes ambientFloat {
    from {
        transform: translate(-10%, -10%) scale(1);
    }

    to {
        transform: translate(10%, 10%) scale(1.2);
    }
}

.cinema-card-stage {
    width: 90%;
    max-width: 900px;
    height: 70vh;
    z-index: 10;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 2rem;
    perspective: 2000px;
    position: relative;
}

.cinema-card-stage .card-container {
    width: 400px;
    height: 100%;
    animation: none;
    flex-shrink: 0;
}

.cinema-card-stage .card {
    width: 100%;
    height: 100%;
}

.cinema-card-stage .card-face {
    padding: 2rem;
    background: rgba(15, 23, 42, 0.4);
    border: 2px solid var(--glass-border-bright);
    display: flex;
    flex-direction: column;
    justify-content: center;
    align-items: center;
}

.cinema-card-stage .pictogram-container {
    width: 100%;
    height: 60%;
    display: flex;
    justify-content: center;
    align-items: center;
}

.cinema-card-stage .pictogram-container svg {
    max-width: 100%;
    max-height: 100%;
    filter: drop-shadow(0 0 30px rgba(99, 102, 241, 0.5));
}

.cinema-card-stage .visual-label {
    margin-top: 1.5rem;
    font-size: 2rem;
    font-weight: 700;
    color: var(--text-primary);
}

.cinema-info-overlay {
    flex: 1;
    display: flex;
    flex-direction: column;
    justify-content: center;
    gap: 1.5rem;
    padding: 2rem;
    background: rgba(15, 23, 42, 0.3);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-lg);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    max-width: 450px;
}

.cinema-info-overlay .word-title {
    font-size: 2.5rem;
    font-weight: 700;
    color: var(--primary);
    margin-bottom: 0.5rem;
}

.cinema-info-overlay .meaning {
    font-size: 1.4rem;
    color: var(--text-secondary);
    margin-bottom: 0.5rem;
}

.cinema-info-overlay .example {
    font-size: 1.1rem;
    line-height: 1.6;
    color: var(--text-primary);
    font-style: italic;
}

.cinema-info-overlay .example-cn {
    font-size: 1rem;
    line-height: 1.6;
    color: var(--text-muted);
}

.cinema-controls {
    position: absolute;
    bottom: 3rem;
    display: flex;
    gap: 1.5rem;
    align-items: center;
    z-index: 20;
    background: rgba(255, 255, 255, 0.03);
    padding: 0.8rem 2rem;
    border-radius: 100px;
    border: 1px solid var(--glass-border);
    -webkit-backdrop-filter: blur(15px);
    backdrop-filter: blur(15px);
}

.glass-btn.circle {
    width: 55px;
    height: 55px;
    padding: 0;
    border-radius: 50%;
    font-size: 1.2rem;
}

.cinema-progress {
    position: absolute;
    bottom: 0;
    left: 0;
    width: 100%;
    height: 6px;
    background: rgba(255, 255, 255, 0.05);
}

.progress-fill {
    height: 100%;
    width: 0%;
    background: linear-gradient(90deg, var(--primary), var(--accent));
    transition: width 0.3s linear;
    box-shadow: 0 0 15px var(--primary);
}

/* --- Connect Game --- */
.connect-game-container {
    max-width: 1000px;
}

.connect-stage {
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: relative;
    height: 60vh;
    margin-top: 2rem;
    gap: 2rem;
}

.connect-column {
    display: flex;
    flex-direction: column;
    gap: 1.2rem;
    width: 250px;
    z-index: 10;
}

.connect-item {
    background: var(--glass-bg-base);
    border: 1px solid var(--glass-border);
    padding: 1.2rem;
    border-radius: var(--radius-md);
    text-align: center;
    cursor: pointer;
    transition: var(--transition-premium);
    font-weight: 800;
    font-size: 1.1rem;
    position: relative;
    min-height: 80px;
    display: flex;
    align-items: center;
    justify-content: center;
    user-select: none;
}

.connect-item:hover {
    background: var(--glass-bg-elevated);
    border-color: var(--primary-light);
    transform: translateX(5px);
}

.connect-column.pics .connect-item:hover {
    transform: translateX(-5px);
}

.connect-item.selected {
    border-color: var(--primary);
    background: rgba(99, 102, 241, 0.2);
    box-shadow: 0 0 20px rgba(99, 102, 241, 0.3);
}

.connect-item.matched {
    border-color: #22c55e;
    background: rgba(34, 197, 94, 0.1);
    color: #4ade80;
    pointer-events: none;
    opacity: 0.8;
}

.connect-column.pics .connect-item {
    padding: 0.5rem;
}

.pictogram-mini {
    width: 100%;
    height: 100%;
    display: flex;
    align-items: center;
    justify-content: center;
}

.pictogram-mini svg {
    width: 100%;
    height: 60px;
    max-width: 120px;
    filter: drop-shadow(0 0 10px rgba(99, 102, 241, 0.4));
}

.connect-item.shake {
    animation: itemShake 0.4s cubic-bezier(0.36, 0.07, 0.19, 0.97) both;
    border-color: #ef4444;
    background: rgba(239, 68, 68, 0.1);
}

@keyframes itemShake {

    10%,
    90% {
        transform: translate3d(-1px, 0, 0);
    }

    20%,
    80% {
        transform: translate3d(2px, 0, 0);
    }

    30%,
    50%,
    70% {
        transform: translate3d(-4px, 0, 0);
    }

    40%,
    60% {
        transform: translate3d(4px, 0, 0);
    }
}

#connect-canvas {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    pointer-events: none;
    z-index: 5;
}

/* AI Generation */
.ai-loading {
    font-size: 3rem;
    animation: floatOrb 1.5s infinite alternate ease-in-out;
}

@keyframes floatOrb {
    from {
        transform: translateY(0) scale(1.1);
        filter: drop-shadow(0 0 10px var(--primary));
    }

    to {
        transform: translateY(-10px) scale(1);
        filter: drop-shadow(0 0 20px var(--accent));
    }
}

.ai-gen-btn:hover {
    background: linear-gradient(135deg, var(--primary) 0%, var(--accent) 100%) !important;
    border: none !important;
}

@media (max-width: 768px) {
    .connect-stage {
        height: 75vh;
        gap: 1rem;
    }

    .connect-column {
        width: 140px;
    }

    .connect-item {
        font-size: 0.9rem;
        padding: 0.8rem;
    }

    /* Cinema mode responsive */
    .cinema-card-stage {
        flex-direction: column;
        max-width: 95%;
        height: auto;
        gap: 1rem;
    }

    .cinema-card-stage .card-container {
        width: 100%;
        height: 300px;
    }

    .cinema-info-overlay {
        width: 100%;
        max-width: 100%;
        padding: 1.5rem;
    }

    .cinema-info-overlay .word-title {
        font-size: 2rem;
    }

    .cinema-info-overlay .meaning {
        font-size: 1.2rem;
    }

    .cinema-info-overlay .example {
        font-size: 1rem;
    }

    .cinema-controls {
        bottom: 2rem;
        padding: 0.6rem 1.5rem;
        gap: 1rem;
    }

    .glass-btn.circle {
        width: 45px;
        height: 45px;
        font-size: 1rem;
    }
}


/* Gacha Grid Responsive */
@media (max-width: 900px) {
    .gacha-grid {
        grid-template-columns: repeat(2, 1fr);
        gap: 1.5rem;
    }
}

@media (max-width: 600px) {
    .gacha-grid {
        grid-template-columns: 1fr;
        gap: 1.5rem;
    }
    
    .gacha-grid .card-container {
        max-width: 100%;
    }
}

/* CSS Version: 2024-01-fix-game-cards */

/* ========================================
   Footer Styles
   ======================================== */

.app-footer {
    margin-top: 4rem;
    padding: 2rem 0 1rem;
    border-top: 1px solid var(--glass-border);
    text-align: center;
}

.footer-content {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    flex-wrap: wrap;
    font-size: 0.9rem;
    color: var(--text-muted);
}

.github-link {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.5rem 1rem;
    background: var(--glass-bg-base);
    border: 1px solid var(--glass-border);
    border-radius: var(--radius-sm);
    color: var(--text-main);
    text-decoration: none;
    transition: var(--transition-premium);
}

.github-link:hover {
    background: var(--glass-bg-elevated);
    border-color: var(--glass-border-bright);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(99, 102, 241, 0.2);
}

.github-link svg {
    flex-shrink: 0;
}

.footer-divider {
    color: var(--glass-border);
}

.footer-text {
    color: var(--text-muted);
}

/* Responsive */
@media (max-width: 768px) {
    .app-footer {
        margin-top: 2rem;
        padding: 1.5rem 0 1rem;
    }
    
    .footer-content {
        font-size: 0.85rem;
        gap: 0.75rem;
    }
    
    .github-link {
        padding: 0.4rem 0.8rem;
        font-size: 0.85rem;
    }
}