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

:root {
    --primary-gold: #ffd700;
    --secondary-gold: #ffed4e;
    --primary-blue: #1e3c72;
    --secondary-blue: #2a5298;
    --success-green: #4CAF50;
    --danger-red: #ff6b6b;
    --warning-orange: #ff9800;
    --glass-bg: rgba(255,255,255,0.1);
    --glass-border: rgba(255,255,255,0.2);
    --shadow-light: 0 4px 20px rgba(0,0,0,0.1);
    --shadow-medium: 0 8px 32px rgba(0,0,0,0.2);
    --shadow-heavy: 0 12px 40px rgba(0,0,0,0.3);
    --border-radius: 15px;
    --border-radius-small: 8px;
    --transition: all 0.3s ease;
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, var(--primary-blue) 0%, var(--secondary-blue) 100%);
    color: #fff;
    min-height: 100vh;
    line-height: 1.6;
}

.container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 20px;
}

/* Header */
header {
    text-align: center;
    margin-bottom: 30px;
    padding: 20px 0;
}

header h1 {
    font-size: clamp(1.8rem, 4vw, 2.5rem);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
    background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    margin-bottom: 15px;
}

.user-info {
    display: inline-flex;
    align-items: center;
    gap: 15px;
    background: var(--glass-bg);
    padding: 10px 20px;
    border-radius: 25px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.logout-btn {
    color: var(--danger-red);
    text-decoration: none;
    padding: 5px 15px;
    border: 1px solid var(--danger-red);
    border-radius: 20px;
    transition: var(--transition);
    font-size: 0.9rem;
}

.logout-btn:hover {
    background: var(--danger-red);
    color: white;
}

/* Auth Styles */
.auth-container {
    max-width: 450px;
    margin: 0 auto 40px;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
}

.auth-tabs {
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    margin-bottom: 25px;
    border-radius: var(--border-radius-small);
    overflow: hidden;
    background: rgba(0,0,0,0.2);
}

.tab-btn {
    padding: 12px 8px;
    background: transparent;
    border: none;
    color: #fff;
    cursor: pointer;
    transition: var(--transition);
    font-size: 0.9rem;
    position: relative;
}

.tab-btn.active {
    background: var(--glass-bg);
}

.tab-btn::before {
    content: '';
    position: absolute;
    bottom: 0;
    left: 0;
    right: 0;
    height: 2px;
    background: var(--primary-gold);
    transform: scaleX(0);
    transition: var(--transition);
}

.tab-btn.active::before {
    transform: scaleX(1);
}

.auth-form {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.auth-form input {
    padding: 15px;
    border: none;
    border-radius: var(--border-radius-small);
    background: rgba(255,255,255,0.9);
    color: #333;
    font-size: 16px;
    transition: var(--transition);
}

.auth-form input:focus {
    outline: none;
    box-shadow: 0 0 0 2px var(--primary-gold);
}

.auth-form button {
    padding: 15px;
    background: linear-gradient(45deg, var(--success-green), #45a049);
    border: none;
    border-radius: var(--border-radius-small);
    color: white;
    font-size: 16px;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
}

.auth-form button:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.hidden {
    display: none !important;
}

.error {
    background: var(--danger-red);
    color: white;
    padding: 15px;
    border-radius: var(--border-radius-small);
    margin-bottom: 20px;
    text-align: center;
    font-weight: 500;
}

.guest-message {
    text-align: center;
    padding: 20px 0;
}

.guest-message h3 {
    margin-bottom: 15px;
    color: var(--primary-gold);
    font-size: 1.3rem;
}

.guest-message p {
    margin-bottom: 25px;
    color: rgba(255,255,255,0.8);
    font-size: 1rem;
}

/* Guest Mode Indicator */
.guest-mode-indicator {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
    margin-bottom: 25px;
    padding: 15px;
    background: rgba(255, 152, 0, 0.15);
    border-radius: var(--border-radius-small);
    border: 1px solid rgba(255, 152, 0, 0.3);
}

.guest-badge {
    background: linear-gradient(45deg, var(--warning-orange), #f57c00);
    color: white;
    padding: 6px 16px;
    border-radius: 20px;
    font-size: 0.85rem;
    font-weight: bold;
}

.guest-mode-indicator small {
    color: rgba(255,255,255,0.7);
    font-size: 0.9rem;
}

/* Main Game Layout */
.quiz-container {
    max-width: 1400px;
    margin: 0 auto;
}

.game-status {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
    background: var(--glass-bg);
    padding: 20px;
    border-radius: var(--border-radius);
    margin-bottom: 30px;
    backdrop-filter: blur(10px);
    border: 1px solid var(--glass-border);
}

.question-info, .prize-info {
    text-align: center;
    font-size: 1.1rem;
    font-weight: 600;
}

.prize-info {
    color: var(--primary-gold);
}

.main-game-area {
    display: grid;
    grid-template-columns: 1fr 2fr 1fr;
    gap: 30px;
    margin-bottom: 30px;
    align-items: start;
}

/* Question Section - Now in the center */
.question-section {
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    backdrop-filter: blur(15px);
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
    min-height: 500px;
    display: flex;
    flex-direction: column;
    justify-content: center;
    grid-column: 2;
    order: 2;
}

.question-text {
    font-size: clamp(1.3rem, 2.5vw, 1.8rem);
    line-height: 1.5;
    margin-bottom: 40px;
    text-align: center;
    padding: 30px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius);
    border: 2px solid rgba(255,215,0,0.3);
    position: relative;
    font-weight: 500;
}

.question-text::before {
    content: '';
    position: absolute;
    top: -2px;
    left: -2px;
    right: -2px;
    bottom: -2px;
    background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
    border-radius: var(--border-radius);
    z-index: -1;
    opacity: 0.2;
}

.answers-grid {
    display: grid;
    grid-template-columns: 1fr;
    gap: 15px;
}

.answer-btn {
    padding: 20px 25px;
    background: var(--glass-bg);
    border: 2px solid var(--glass-border);
    border-radius: var(--border-radius-small);
    color: white;
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    text-align: left;
    position: relative;
    overflow: hidden;
    min-height: 60px;
    display: flex;
    align-items: center;
    font-weight: 500;
}

.answer-btn::before {
    content: '';
    position: absolute;
    top: 0;
    left: -100%;
    width: 100%;
    height: 100%;
    background: linear-gradient(90deg, transparent, rgba(255,255,255,0.1), transparent);
    transition: left 0.5s;
}

.answer-btn:hover::before {
    left: 100%;
}

.answer-btn:hover {
    background: rgba(255,255,255,0.15);
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
    border-color: rgba(255,215,0,0.5);
}

.answer-btn.selected {
    background: rgba(255, 193, 7, 0.3);
    border-color: #ffc107;
}

.answer-btn.correct {
    background: rgba(76, 175, 80, 0.3);
    border-color: var(--success-green);
    animation: correctAnswer 0.5s ease;
}

.answer-btn.wrong {
    background: rgba(244, 67, 54, 0.3);
    border-color: #f44336;
    animation: wrongAnswer 0.5s ease;
}

@keyframes correctAnswer {
    0% { transform: scale(1); }
    50% { transform: scale(1.05); }
    100% { transform: scale(1); }
}

@keyframes wrongAnswer {
    0% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
    100% { transform: translateX(0); }
}

/* Sidebar */
.game-sidebar {
    display: flex;
    flex-direction: column;
    gap: 20px;
}

.prize-ladder-compact, .global-ranking-compact {
    background: rgba(0,0,0,0.3);
    border-radius: var(--border-radius);
    padding: 20px;
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255,255,255,0.1);
}

.prize-ladder-compact {
    grid-column: 1;
    order: 1;
}

.global-ranking-compact {
    grid-column: 3;
    order: 3;
}

.prize-ladder-compact h4, .global-ranking-compact h4 {
    text-align: center;
    margin-bottom: 15px;
    color: var(--primary-gold);
    font-size: 1.1rem;
    border-bottom: 1px solid rgba(255,215,0,0.3);
    padding-bottom: 10px;
}

.prize-levels {
    display: flex;
    flex-direction: column-reverse;
    gap: 3px;
}

.prize-level {
    padding: 8px 12px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius-small);
    text-align: center;
    transition: var(--transition);
    border: 1px solid transparent;
    font-size: 0.9rem;
    font-weight: 500;
}

.prize-level.safety {
    background: rgba(255, 193, 7, 0.15);
    border-color: #ffc107;
}

.prize-level.current {
    background: rgba(255, 215, 0, 0.25);
    border-color: var(--primary-gold);
    animation: pulse 2s infinite;
    font-weight: bold;
    transform: scale(1.05);
}

@keyframes pulse {
    0%, 100% { opacity: 1; }
    50% { opacity: 0.7; }
}

.ranking-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 8px 12px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius-small);
    margin-bottom: 5px;
    font-size: 0.9rem;
}

.ranking-item-compact {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 6px 10px;
    background: rgba(255,255,255,0.05);
    border-radius: var(--border-radius-small);
    margin-bottom: 3px;
    font-size: 0.85rem;
}

.ranking-item .rank {
    color: var(--primary-gold);
    font-weight: bold;
    min-width: 20px;
}

.ranking-item-compact .rank {
    color: var(--primary-gold);
    font-weight: bold;
    min-width: 18px;
}

.ranking-item .name {
    flex: 1;
    margin: 0 10px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ranking-item-compact .name {
    flex: 1;
    margin: 0 8px;
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
}

.ranking-item .score {
    color: var(--success-green);
    font-weight: bold;
}

.ranking-item-compact .score {
    color: var(--success-green);
    font-weight: bold;
    font-size: 0.8rem;
}

/* Game Controls */
.game-controls {
    display: flex;
    justify-content: center;
    gap: 15px;
    margin-top: 30px;
    flex-wrap: wrap;
}

.btn {
    padding: 15px 30px;
    border: none;
    border-radius: var(--border-radius-small);
    font-size: 1rem;
    cursor: pointer;
    transition: var(--transition);
    font-weight: 600;
    min-width: 150px;
}

.btn-primary {
    background: linear-gradient(45deg, var(--success-green), #45a049);
    color: white;
}

.btn-secondary {
    background: linear-gradient(45deg, var(--warning-orange), #f57c00);
    color: white;
}

.btn-tertiary {
    background: var(--glass-bg);
    color: white;
    border: 1px solid var(--glass-border);
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-light);
}

.btn:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.game-over {
    text-align: center;
    background: var(--glass-bg);
    border-radius: var(--border-radius);
    padding: 40px;
    backdrop-filter: blur(15px);
    margin-top: 30px;
    border: 1px solid var(--glass-border);
}

.game-over h2 {
    font-size: 2rem;
    margin-bottom: 20px;
    color: var(--primary-gold);
}

.game-over p {
    font-size: 1.2rem;
    margin-bottom: 25px;
}

.guest-reminder {
    color: rgba(255,255,255,0.7);
    font-style: italic;
    font-size: 1rem;
}

/* Global Ranking */
.global-ranking {
    max-width: 1000px;
    margin: 40px auto 0;
    background: var(--glass-bg);
    backdrop-filter: blur(15px);
    border-radius: var(--border-radius);
    padding: 30px;
    box-shadow: var(--shadow-medium);
    border: 1px solid var(--glass-border);
}

.global-ranking h3 {
    text-align: center;
    margin-bottom: 25px;
    font-size: 1.8rem;
    color: var(--primary-gold);
    text-shadow: 2px 2px 4px rgba(0,0,0,0.3);
}

.ranking-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
    gap: 15px;
}

.ranking-item.top-three {
    background: linear-gradient(45deg, rgba(255,215,0,0.2), rgba(255,193,7,0.1));
    border: 2px solid rgba(255,215,0,0.5);
    box-shadow: var(--shadow-light);
}

.ranking-item .rank.position-1,
.ranking-item .rank.position-2,
.ranking-item .rank.position-3 {
    padding: 5px 12px;
    border-radius: 15px;
    font-weight: bold;
}

.ranking-item .rank.position-1 {
    background: linear-gradient(45deg, var(--primary-gold), var(--secondary-gold));
    color: #333;
}

.ranking-item .rank.position-2 {
    background: linear-gradient(45deg, #c0c0c0, #e8e8e8);
    color: #333;
}

.ranking-item .rank.position-3 {
    background: linear-gradient(45deg, #cd7f32, #d4a574);
    color: #fff;
}

/* Responsive Design */
@media (max-width: 1200px) {
    .main-game-area {
        grid-template-columns: 1fr 1.5fr 1fr;
        gap: 20px;
    }
    
    .question-section {
        padding: 30px;
    }
}

@media (max-width: 1024px) {
    .main-game-area {
        grid-template-columns: 1fr;
        gap: 20px;
        grid-template-rows: auto auto auto;
    }
    
    .prize-ladder-compact {
        grid-column: 1;
        order: 1;
    }
    
    .question-section {
        grid-column: 1;
        order: 2;
        padding: 30px;
        min-height: auto;
    }
    
    .global-ranking-compact {
        grid-column: 1;
        order: 3;
    }
}

@media (max-width: 768px) {
    .container {
        padding: 15px;
    }
    
    .auth-tabs {
        grid-template-columns: 1fr;
        gap: 5px;
    }
    
    .tab-btn {
        padding: 15px;
        border-radius: var(--border-radius-small);
        margin-bottom: 5px;
    }
    
    .game-status {
        grid-template-columns: 1fr;
        gap: 15px;
        text-align: center;
    }
    
    .game-sidebar {
        grid-template-columns: 1fr;
        gap: 15px;
    }
    
    .question-section {
        padding: 25px;
    }
    
    .question-text {
        padding: 20px;
        margin-bottom: 30px;
    }
    
    .answer-btn {
        padding: 15px 20px;
        font-size: 0.95rem;
    }
    
    .game-controls {
        flex-direction: column;
        align-items: center;
    }
    
    .btn {
        width: 100%;
        max-width: 300px;
    }
    
    .ranking-grid {
        grid-template-columns: 1fr;
    }
    
    .guest-mode-indicator {
        flex-direction: column;
        gap: 8px;
    }
}

@media (max-width: 480px) {
    .auth-container {
        margin: 0 auto 20px;
        padding: 20px;
    }
    
    .question-text {
        font-size: 1.1rem;
        padding: 15px;
    }
    
    .answer-btn {
        padding: 12px 15px;
        font-size: 0.9rem;
        min-height: 50px;
    }
    
    .prize-level {
        font-size: 0.8rem;
        padding: 6px 10px;
    }
    
    .ranking-item {
        font-size: 0.85rem;
        padding: 6px 10px;
    }
    
    .global-ranking {
        margin-top: 20px;
        padding: 20px;
    }
    
    .btn {
        padding: 12px 20px;
        font-size: 0.9rem;
    }
}

/* Print styles */
@media print {
    .logout-btn, .game-controls, .auth-container {
        display: none;
    }
    
    body {
        background: white;
        color: black;
    }
    
    .question-section, .global-ranking {
        background: white;
        box-shadow: none;
        border: 1px solid #ccc;
    }
}