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

:root {
    --primary-color: #ff9900;
    --secondary-color: #1bb141;
    --bg-color: #1a1a1a;
    --card-bg: #2a2a2a;
    --text-primary: #ffffff;
    --text-secondary: #b0b0b0;
    --border-color: #404040;
    --success-color: #4caf50;
    --error-color: #f44336;
}

body {
    font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Oxygen, Ubuntu, Cantarell, sans-serif;
    background: var(--bg-color);
    color: var(--text-primary);
    min-height: 100vh;
    padding: 20px;
}

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

/* Header */
header {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 20px 30px;
    margin-bottom: 30px;
    border: 1px solid var(--border-color);
}

.header-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 15px;
}

header h1 {
    font-size: 2em;
    font-weight: bold;
    color: var(--primary-color);
}

.header-buttons {
    display: flex;
    gap: 10px;
}

.icon-btn {
    background: transparent;
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    width: 40px;
    height: 40px;
    border-radius: 8px;
    cursor: pointer;
    font-size: 1.2em;
    transition: all 0.2s;
}

.icon-btn:hover {
    background: var(--border-color);
    transform: scale(1.05);
}

.stats-bar {
    display: flex;
    gap: 30px;
    padding-top: 15px;
    border-top: 1px solid var(--border-color);
}

.stat-item {
    display: flex;
    flex-direction: column;
    gap: 5px;
}

.stat-label {
    font-size: 0.85em;
    color: var(--text-secondary);
    text-transform: uppercase;
    letter-spacing: 0.5px;
}

.stat-value {
    font-size: 1.8em;
    font-weight: bold;
    color: var(--text-primary);
}

/* Game Area */
.game-area {
    background: var(--card-bg);
    border-radius: 12px;
    padding: 40px;
    border: 1px solid var(--border-color);
    min-height: 500px;
}

.loading {
    text-align: center;
    padding: 60px 20px;
}

.spinner {
    border: 3px solid var(--border-color);
    border-top: 3px solid var(--primary-color);
    border-radius: 50%;
    width: 50px;
    height: 50px;
    animation: spin 1s linear infinite;
    margin: 0 auto 20px;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.question-text {
    text-align: center;
    margin-bottom: 40px;
}

.question-text h2 {
    font-size: 1.8em;
    font-weight: 600;
}

/* Models Container */
.models-container {
    display: grid;
    gap: 20px;
    margin-bottom: 30px;
}

.models-container.two-models {
    grid-template-columns: 1fr 1fr;
}

.models-container.three-models {
    grid-template-columns: 1fr 1fr 1fr;
}

.model-card {
    background: var(--bg-color);
    border-radius: 12px;
    overflow: hidden;
    border: 2px solid var(--border-color);
    cursor: pointer;
    transition: all 0.3s;
    position: relative;
}

.model-card:hover {
    border-color: var(--primary-color);
    transform: translateY(-5px);
    box-shadow: 0 10px 30px rgba(255, 153, 0, 0.2);
}

.model-card.selected {
    border-color: var(--primary-color);
    box-shadow: 0 0 20px rgba(255, 153, 0, 0.4);
}

.model-card.correct {
    border-color: var(--success-color);
    box-shadow: 0 0 20px rgba(76, 175, 80, 0.4);
}

.model-card.incorrect {
    border-color: var(--error-color);
    box-shadow: 0 0 20px rgba(244, 67, 54, 0.4);
}

.model-image-wrapper {
    position: relative;
    width: 100%;
    padding-top: 100%;
    overflow: hidden;
    background: var(--border-color);
}

.model-image-wrapper img {
    position: absolute;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    object-fit: cover;
}

.model-info {
    padding: 15px;
    text-align: center;
}

.model-name {
    font-size: 1.1em;
    font-weight: 600;
    margin-bottom: 10px;
    color: var(--text-primary);
}

.model-views {
    font-size: 1.5em;
    font-weight: bold;
    color: var(--primary-color);
}

.model-views.hidden {
    color: var(--text-secondary);
    font-size: 2em;
}

.model-views.revealing {
    animation: pulse 0.5s ease-in-out;
    color: var(--primary-color);
    font-weight: bold;
}

.model-views.correct-views {
    color: var(--success-color);
    animation: correctPulse 0.6s ease-in-out;
}

.model-views.incorrect-views {
    color: var(--error-color);
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.1);
    }
}

@keyframes correctPulse {
    0% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.2);
        text-shadow: 0 0 20px var(--success-color);
    }
    100% {
        transform: scale(1);
    }
}

/* Быстрое уведомление */
.quick-notification {
    position: fixed;
    top: 100px;
    left: 50%;
    transform: translateX(-50%) translateY(-20px);
    background: var(--card-bg);
    border: 2px solid var(--border-color);
    border-radius: 16px;
    padding: 20px 40px;
    z-index: 3000;
    opacity: 1;
    pointer-events: none;
    transition: all 0.3s ease-out;
    box-shadow: 0 10px 40px rgba(0, 0, 0, 0.5);
    min-width: 200px;
    text-align: center;
}

.quick-notification.show {
    opacity: 1;
    transform: translateX(-50%) translateY(0);
    pointer-events: auto;
}

.quick-notification.correct {
    border-color: var(--success-color);
    background: var(--card-bg);
}

.quick-notification.incorrect {
    border-color: var(--error-color);
    background: var(--card-bg);
}

.notif-icon {
    font-size: 3em;
    margin-bottom: 10px;
}

.notif-text {
    font-size: 1.5em;
    font-weight: bold;
    margin-bottom: 5px;
}

.notif-streak {
    font-size: 1.1em;
    color: var(--primary-color);
    font-weight: bold;
    margin-top: 10px;
}

.models-container {
    transition: opacity 0.3s, transform 0.3s;
}

/* Result Modal */
.result-modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 1000;
    animation: fadeIn 0.3s;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

.result-content {
    background: var(--card-bg);
    border-radius: 16px;
    padding: 40px;
    max-width: 500px;
    width: 90%;
    text-align: center;
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s;
}

@keyframes slideUp {
    from {
        transform: translateY(30px);
        opacity: 0;
    }
    to {
        transform: translateY(0);
        opacity: 1;
    }
}

.result-icon {
    font-size: 4em;
    margin-bottom: 20px;
}

.result-title {
    font-size: 2em;
    font-weight: bold;
    margin-bottom: 20px;
}

.result-title.correct {
    color: var(--success-color);
}

.result-title.incorrect {
    color: var(--error-color);
}

.result-stats {
    display: flex;
    justify-content: space-around;
    margin: 20px 0;
    padding: 20px;
    background: var(--bg-color);
    border-radius: 8px;
}

.result-details {
    margin: 20px 0;
    line-height: 1.8;
    color: var(--text-secondary);
}

.result-buttons {
    display: flex;
    gap: 15px;
    margin-top: 30px;
}

.btn-primary, .btn-secondary {
    flex: 1;
    padding: 15px 30px;
    border: none;
    border-radius: 8px;
    font-size: 1.1em;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s;
}

.btn-primary {
    background: var(--primary-color);
    color: var(--bg-color);
}

.btn-primary:hover {
    background: #ffaa00;
    transform: translateY(-2px);
}

.btn-secondary {
    background: var(--border-color);
    color: var(--text-primary);
}

.btn-secondary:hover {
    background: #505050;
}

/* Modal */
.modal {
    position: fixed;
    top: 0;
    left: 0;
    width: 100%;
    height: 100%;
    background: rgba(0, 0, 0, 0.8);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 2000;
    animation: fadeIn 0.3s;
}

.modal-content {
    background: var(--card-bg);
    border-radius: 16px;
    max-width: 600px;
    width: 90%;
    max-height: 90vh;
    overflow-y: auto;
    border: 1px solid var(--border-color);
    animation: slideUp 0.3s;
}

.modal-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 20px 30px;
    border-bottom: 1px solid var(--border-color);
}

.modal-header h2 {
    font-size: 1.5em;
}

.modal-close {
    background: transparent;
    border: none;
    color: var(--text-primary);
    font-size: 2em;
    cursor: pointer;
    width: 40px;
    height: 40px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: 8px;
    transition: background 0.2s;
}

.modal-close:hover {
    background: var(--border-color);
}

.modal-body {
    padding: 30px;
}

.setting-item {
    margin-bottom: 25px;
}

.toggle {
    display: flex;
    align-items: center;
    gap: 15px;
    cursor: pointer;
}

.toggle input {
    display: none;
}

.toggle-slider {
    position: relative;
    width: 50px;
    height: 26px;
    background: var(--border-color);
    border-radius: 13px;
    transition: background 0.3s;
}

.toggle-slider::before {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    border-radius: 50%;
    background: var(--text-primary);
    top: 3px;
    left: 3px;
    transition: transform 0.3s;
}

.toggle input:checked + .toggle-slider {
    background: var(--primary-color);
}

.toggle input:checked + .toggle-slider::before {
    transform: translateX(24px);
}

.toggle-label {
    font-size: 1.1em;
    font-weight: 600;
}

.setting-desc {
    margin-top: 8px;
    color: var(--text-secondary);
    font-size: 0.9em;
    margin-left: 65px;
}

.modal-body ul {
    list-style: none;
    padding: 0;
    margin: 20px 0;
}

.modal-body li {
    padding: 10px 0;
    padding-left: 25px;
    position: relative;
}

.modal-body li::before {
    content: '•';
    position: absolute;
    left: 0;
    color: var(--primary-color);
    font-size: 1.5em;
}

.help-note {
    margin-top: 20px;
    padding: 15px;
    background: var(--bg-color);
    border-radius: 8px;
    border-left: 4px solid var(--primary-color);
}

/* Поле ввода ника */
.username-input {
    width: 100%;
    padding: 15px;
    background: var(--bg-color);
    border: 2px solid var(--border-color);
    border-radius: 8px;
    color: var(--text-primary);
    font-size: 1.1em;
    transition: border-color 0.3s;
}

.username-input:focus {
    outline: none;
    border-color: var(--primary-color);
}

/* Лидерборд */
.leaderboard-list {
    max-height: 500px;
    overflow-y: auto;
}

.leaderboard-item {
    display: flex;
    align-items: center;
    padding: 15px;
    margin-bottom: 10px;
    background: var(--bg-color);
    border-radius: 8px;
    border: 1px solid var(--border-color);
    transition: all 0.2s;
}

.leaderboard-item:hover {
    background: var(--card-bg);
    transform: translateX(5px);
}

.leaderboard-item.current-user {
    border: 2px solid var(--primary-color);
    background: rgba(255, 153, 0, 0.1);
}

.leaderboard-rank {
    width: 50px;
    font-size: 1.3em;
    font-weight: bold;
    text-align: center;
    color: var(--primary-color);
}

.leaderboard-name {
    flex: 1;
    font-size: 1.1em;
    font-weight: 600;
}

.leaderboard-streak {
    font-size: 1.2em;
    font-weight: bold;
    color: var(--primary-color);
}

.you-badge {
    font-size: 0.8em;
    color: var(--primary-color);
    font-weight: normal;
    margin-left: 5px;
}

/* Адаптивность */
@media (max-width: 768px) {
    .models-container.two-models,
    .models-container.three-models {
        grid-template-columns: 1fr;
    }

    header h1 {
        font-size: 1.5em;
    }

    .game-area {
        padding: 20px;
    }

    .result-buttons {
        flex-direction: column;
    }
}