@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;600;800&display=swap');

:root {
    --bg-primary: #0f172a;
    --bg-secondary: #1e293b;
    --accent: #3b82f6;
    --accent-hover: #2563eb;
    --success: #10b981;
    --danger: #ef4444;
    --text-main: #f8fafc;
    --text-muted: #94a3b8;
    --border: rgba(255, 255, 255, 0.1);
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.05);
}

* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
    font-family: 'Outfit', sans-serif;
}

body {
    background-color: var(--bg-primary);
    color: var(--text-main);
    height: 100vh;
    overflow: hidden;
    display: flex;
    justify-content: center;
    align-items: center;
    background-image: radial-gradient(circle at top right, rgba(59, 130, 246, 0.15), transparent 40%),
                      radial-gradient(circle at bottom left, rgba(16, 185, 129, 0.1), transparent 40%);
}

.screen {
    display: none;
    width: 100%;
    height: 100%;
    position: absolute;
    top: 0;
    left: 0;
}

.screen.active {
    display: flex;
}

/* Intro Screen */
#intro-screen, #result-screen {
    flex-direction: column;
    justify-content: center;
    align-items: center;
    text-align: center;
}

.card {
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    padding: 3rem;
    border-radius: 24px;
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    max-width: 500px;
    width: 90%;
    animation: fadeUp 0.5s ease-out forwards;
}

@keyframes fadeUp {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

h1 {
    font-size: 3rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    background: linear-gradient(135deg, #60a5fa, #3b82f6);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

p.subtitle {
    color: var(--text-muted);
    font-size: 1.1rem;
    margin-bottom: 2rem;
}

input[type="text"] {
    width: 100%;
    padding: 1rem 1.5rem;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: rgba(15, 23, 42, 0.6);
    color: white;
    font-size: 1.1rem;
    margin-bottom: 1.5rem;
    outline: none;
    transition: all 0.3s ease;
}

input[type="text"]:focus {
    border-color: var(--accent);
    box-shadow: 0 0 0 4px rgba(59, 130, 246, 0.2);
}

.btn {
    width: 100%;
    padding: 1rem;
    border-radius: 12px;
    border: none;
    background: var(--accent);
    color: white;
    font-size: 1.2rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn:hover {
    background: var(--accent-hover);
    transform: translateY(-2px);
    box-shadow: 0 10px 15px -3px rgba(59, 130, 246, 0.4);
}

.links {
    margin-top: 1.5rem;
}

.links a {
    color: var(--text-muted);
    text-decoration: none;
    font-size: 0.9rem;
    transition: color 0.2s;
}

.links a:hover {
    color: var(--text-main);
}

/* Game Screen */
#game-screen {
    display: none;
    flex-direction: row;
    padding: 2rem;
    gap: 2rem;
    height: 100vh;
}

#game-screen.active {
    display: flex;
}

.panel-left {
    flex: 6;
    background: var(--glass-bg);
    backdrop-filter: blur(16px);
    border: 1px solid var(--glass-border);
    border-radius: 24px;
    padding: 2rem;
    overflow-y: auto;
    position: relative;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.panel-left h2 {
    margin-bottom: 1.5rem;
    font-size: 1.8rem;
    border-bottom: 1px solid var(--border);
    padding-bottom: 1rem;
}

.document-content {
    font-size: 1.1rem;
    line-height: 1.8;
    color: #cbd5e1;
}

.document-content p { margin-bottom: 1rem; }
.document-content ul { margin-bottom: 1rem; padding-left: 2rem; }

.panel-right {
    flex: 4;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

.status-bar {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 1.5rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.timer {
    font-size: 2.5rem;
    font-weight: 800;
    font-variant-numeric: tabular-nums;
    color: var(--accent);
}

.progress {
    font-size: 1.2rem;
    font-weight: 600;
    color: var(--text-muted);
}

.question-box {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2rem;
    flex-grow: 1;
    display: flex;
    flex-direction: column;
}

.question-text {
    font-size: 1.4rem;
    font-weight: 600;
    margin-bottom: 2rem;
    line-height: 1.4;
}

.options {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.option-btn {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 1.2rem 1.5rem;
    color: white;
    font-size: 1.1rem;
    text-align: left;
    cursor: pointer;
    transition: all 0.2s;
    display: flex;
    align-items: center;
}

.option-btn .key {
    background: var(--bg-secondary);
    padding: 0.2rem 0.6rem;
    border-radius: 6px;
    margin-right: 1rem;
    font-weight: bold;
    color: var(--accent);
    border: 1px solid var(--border);
}

.option-btn:hover {
    background: var(--bg-secondary);
    transform: translateX(5px);
    border-color: var(--accent);
}

.option-btn.selected {
    background: rgba(59, 130, 246, 0.2);
    border-color: var(--accent);
}

.option-btn.correct {
    background: rgba(16, 185, 129, 0.2);
    border-color: var(--success);
    color: var(--success);
}

.option-btn.wrong {
    background: rgba(239, 68, 68, 0.2);
    border-color: var(--danger);
    color: var(--danger);
}

/* Penalty Overlay */
#penalty-overlay {
    position: absolute;
    top: 0; left: 0; width: 100%; height: 100%;
    background: rgba(239, 68, 68, 0.9);
    backdrop-filter: blur(10px);
    display: none;
    justify-content: center;
    align-items: center;
    flex-direction: column;
    z-index: 100;
    color: white;
    text-align: center;
}

#penalty-overlay.active {
    display: flex;
    animation: flashIn 0.3s ease-out;
}

@keyframes flashIn {
    0% { opacity: 0; transform: scale(1.1); }
    100% { opacity: 1; transform: scale(1); }
}

#penalty-overlay h2 { font-size: 3rem; margin-bottom: 1rem; }
.penalty-timer { font-size: 6rem; font-weight: 800; }

/* Result Screen */
.stats-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1.5rem;
    margin: 2rem 0;
}

.stat-box {
    background: rgba(15, 23, 42, 0.6);
    border: 1px solid var(--border);
    border-radius: 16px;
    padding: 1.5rem;
}

.stat-box .label {
    color: var(--text-muted);
    font-size: 0.9rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    margin-bottom: 0.5rem;
}

.stat-box .value {
    font-size: 2rem;
    font-weight: 800;
    color: var(--accent);
}

/* Scrollbar styling */
::-webkit-scrollbar { width: 8px; }
::-webkit-scrollbar-track { background: rgba(0,0,0,0.1); border-radius: 4px; }
::-webkit-scrollbar-thumb { background: var(--bg-secondary); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: var(--accent); }

/* Leaderboard Page Specific */
.leaderboard-container {
    width: 100%;
    max-width: 800px;
    margin: 0 auto;
    padding: 3rem 1rem;
}

.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 2rem;
    background: var(--glass-bg);
    border-radius: 16px;
    overflow: hidden;
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
}

.leaderboard-table th, .leaderboard-table td {
    padding: 1.2rem 1.5rem;
    text-align: left;
    border-bottom: 1px solid var(--border);
}

.leaderboard-table th {
    background: rgba(0,0,0,0.2);
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 1px;
    font-size: 0.9rem;
}

.leaderboard-table tr:last-child td { border-bottom: none; }
.leaderboard-table tbody tr { transition: background 0.2s; }
.leaderboard-table tbody tr:hover { background: rgba(255,255,255,0.05); }

.rank-1 { color: #fbbf24; font-weight: 800; }
.rank-2 { color: #94a3b8; font-weight: 800; }
.rank-3 { color: #b45309; font-weight: 800; }