:root {
    --primary-gradient: linear-gradient(135deg, #6366f1 0%, #a855f7 100%);
    --bg-color: #0f172a;
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --glass-bg: rgba(255, 255, 255, 0.05);
    --glass-border: rgba(255, 255, 255, 0.1);
    --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --correct-color: #10b981;
    --incorrect-color: #ef4444;
    --accent-color: #f59e0b;
    --font-heading: 'Outfit', sans-serif;
    --font-body: 'Inter', sans-serif;
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    background-color: var(--bg-color);
    color: var(--text-primary);
    font-family: var(--font-body);
    min-height: 100dvh;
    
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    overflow-x: hidden;
    overflow-y: auto;
    
    touch-action: pan-y pinch-zoom;
    
}

.bg-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    z-index: -1;
    overflow: hidden;
    background: radial-gradient(circle at top right, #1e1b4b, #0f172a);
}

.blob {
    position: absolute;
    width: 400px;
    height: 400px;
    background: var(--primary-gradient);
    filter: blur(80px);
    border-radius: 50%;
    opacity: 0.15;
    animation: move 20s infinite alternate;
}

.blob-1 {
    top: -100px;
    left: -100px;
    animation-duration: 25s;
}

.blob-2 {
    bottom: -100px;
    right: -100px;
    animation-duration: 30s;
    background: linear-gradient(135deg, #3b82f6, #2dd4bf);
}

.blob-3 {
    top: 50%;
    left: 50%;
    width: 300px;
    height: 300px;
    animation-duration: 22s;
    background: linear-gradient(135deg, #f43f5e, #fb923c);
}

@keyframes move {
    from {
        transform: translate(0, 0) scale(1);
    }

    to {
        transform: translate(100px, 50px) scale(1.1);
    }
}

.preloader {
    position: fixed;
    inset: 0;
    background: var(--bg-color);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    transition: opacity 0.8s cubic-bezier(0.4, 0, 0.2, 1);
}

.preloader.hidden {
    opacity: 0;
    pointer-events: none;
}

.loader-content {
    text-align: center;
}

.spinner-container {
    position: relative;
    width: 100px;
    height: 100px;
    margin: 0 auto 30px;
}

.spinner-core {
    position: absolute;
    inset: 15px;
    background: var(--primary-gradient);
    border-radius: 50%;
    animation: pulse 1.5s ease-in-out infinite;
}

.spinner-ring {
    position: absolute;
    inset: 0;
    border: 4px solid transparent;
    border-top-color: #6366f1;
    border-bottom-color: #a855f7;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

@keyframes spin {
    to {
        transform: rotate(360deg);
    }
}

@keyframes pulse {

    0%,
    100% {
        transform: scale(1);
        opacity: 0.8;
    }

    50% {
        transform: scale(0.8);
        opacity: 0.5;
    }
}

.loading-text {
    font-family: var(--font-heading);
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--text-primary);
    margin-bottom: 20px;
}

.loading-animals {
    display: flex;
    gap: 15px;
    justify-content: center;
}

.loading-emoji {
    font-size: 2rem;
    animation: bounce 0.6s ease-in-out infinite alternate;
}

.loading-emoji:nth-child(2) {
    animation-delay: 0.2s;
}

.loading-emoji:nth-child(3) {
    animation-delay: 0.4s;
}

@keyframes bounce {
    from {
        transform: translateY(0);
    }

    to {
        transform: translateY(-15px);
    }
}

.game-wrapper {
    width: 100%;
    max-width: 550px;
    padding: 40px 20px;
    
    min-height: 100dvh;
    
    display: none;
    
    flex-direction: column;
    align-items: center;
    justify-content: center;
}

.glass-card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 20px;
    box-shadow: var(--glass-shadow);
    padding: 30px;
    text-align: center;
    width: 100%;
    flex-shrink: 0;
    
    margin: auto 0;
    
}

.game-header {
    margin-bottom: 20px;
}

.game-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    
    font-weight: 800;
    background: var(--primary-gradient);
    -webkit-background-clip: text;
    background-clip: text;
    -webkit-text-fill-color: transparent;
    margin-bottom: 4px;
    letter-spacing: -0.02em;
}

.game-subtitle {
    color: var(--text-secondary);
    font-size: 1rem;
    font-weight: 500;
}

.stats-bar {
    display: flex;
    justify-content: center;
    gap: 12px;
    margin-bottom: 20px;
    
}

.stat-pill {
    background: rgba(255, 255, 255, 0.05);
    border-radius: 10px;
    padding: 8px 15px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 90px;
    border: 1px solid var(--glass-border);
}

.stat-pill .label {
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.05em;
    margin-bottom: 4px;
}

.stat-pill .value {
    font-family: var(--font-heading);
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-primary);
}

.score-pill {
    border-left: 4px solid #6366f1;
}

.question-pill {
    border-left: 4px solid #a855f7;
}

.question-stage {
    margin-bottom: 25px;
}

.category-tag {
    display: inline-block;
    background: rgba(99, 102, 241, 0.1);
    color: #818cf8;
    padding: 4px 12px;
    border-radius: 20px;
    font-size: 0.8rem;
    font-weight: 600;
    margin-bottom: 10px;
    border: 1px solid rgba(99, 102, 241, 0.2);
}

.emoji-display {
    font-size: 5rem;
    margin-bottom: 20px;
    filter: drop-shadow(0 0 20px rgba(255, 255, 255, 0.1));
    display: inline-block;
    animation: float 3s ease-in-out infinite;
    
}

@keyframes float {

    0%,
    100% {
        transform: translateY(0) rotate(0);
    }

    50% {
        transform: translateY(-10px) rotate(5deg);
    }
}

.question-prompt {
    font-family: var(--font-heading);
    font-size: 1.4rem;
    font-weight: 700;
    color: var(--text-primary);
}

.options-layout {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 16px;
    margin-bottom: 30px;
}

.quiz-option {
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--glass-border);
    border-radius: 12px;
    padding: 12px;
    
    color: var(--text-primary);
    font-family: var(--font-body);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
    position: relative;
    overflow: hidden;
    outline: none;
}

.quiz-option:hover:not(:disabled) {
    background: rgba(255, 255, 255, 0.08);
    
}

.quiz-option.correct {
    background: var(--correct-color);
    border-color: var(--correct-color);
    color: white;
}

.quiz-option.incorrect {
    background: var(--incorrect-color);
    border-color: var(--incorrect-color);
    color: white;
    box-shadow: 0 0 20px rgba(239, 68, 68, 0.4);
}

.quiz-option:disabled {
    cursor: default;
    opacity: 0.7;
}

.interaction-feedback {
    height: 40px;
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.3s ease;
}

.interaction-feedback.correct {
    color: var(--correct-color);
}

.interaction-feedback.incorrect {
    color: var(--incorrect-color);
}

.action-btn {
    background: var(--primary-gradient);
    color: white;
    border: none;
    padding: 16px 32px;
    border-radius: 16px;
    font-family: var(--font-heading);
    font-size: 1.1rem;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s ease;
    display: inline-flex;
    align-items: center;
    gap: 12px;
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.action-btn:hover {
    box-shadow: 0 4px 15px rgba(124, 58, 237, 0.3);
}

.action-btn .icon {
    font-size: 1.2rem;
    transition: transform 0.3s ease;
}

.hidden {
    display: none !important;
}

.results-screen {
    animation: fadeIn 0.4s ease-out;
}

@keyframes fadeIn {
    from {
        opacity: 0;
    }

    to {
        opacity: 1;
    }
}

.trophy-icon {
    font-size: 3.5rem;
    margin-bottom: 15px;
    filter: drop-shadow(0 0 10px var(--accent-color));
}

.results-title {
    font-family: var(--font-heading);
    font-size: 2rem;
    font-weight: 800;
    margin-bottom: 10px;
}

.results-summary {
    font-size: 1.1rem;
    color: var(--text-secondary);
    margin-bottom: 10px;
}

.results-summary span {
    color: var(--text-primary);
    font-weight: 700;
}

.results-msg {
    color: var(--accent-color);
    font-weight: 600;
    margin-bottom: 25px;
    font-size: 1.05rem;
}

.restart-action .icon {
    transition: transform 0.6s ease;
}

.restart-action:hover .icon {
    transform: rotate(180deg);
}

@media (max-width: 640px) {
    .glass-card {
        padding: 20px 15px;
        border-radius: 16px;
        max-height: 98dvh;
    }

    .game-wrapper {
        padding: 10px;
    }

    .game-title {
        font-size: 1.75rem;
    }

    .emoji-display {
        font-size: 4rem;
    }

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

    .quiz-option {
        padding: 14px;
    }
}

::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--bg-color);
}

::-webkit-scrollbar-thumb {
    background: var(--glass-border);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: rgba(255, 255, 255, 0.2);
}