/* Battle of Minds Premium Styles */
@import url('https://fonts.googleapis.com/css2?family=Bebas+Neue&family=Space+Grotesk:wght@400;500;600;700&family=Space+Mono:wght@400;700&display=swap');

:root {
    --bg: #07070f;
    --surface: #10101e;
    --card: #16162a;
    --border: #252540;
    --green: #00ff99;
    --cyan: #00d4ff;
    --orange: #ff6b35;
    --yellow: #ffd600;
    --text: #e8e8f8;
    --muted: #7070a0;
    --danger: #ff4466;
}

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

body {
    background: var(--bg);
    color: var(--text);
    font-family: 'Space Grotesk', sans-serif;
    overflow-x: hidden;
}

/* Scrollbar */
::-webkit-scrollbar { width: 6px; }
::-webkit-scrollbar-track { background: var(--bg); }
::-webkit-scrollbar-thumb { background: var(--border); border-radius: 3px; }

/* Layout */
.container {
    max-width: 480px;
    margin: 0 auto;
    padding: 40px 20px;
    display: flex;
    flex-direction: column;
    align-items: center;
    min-height: 100vh;
}

.hero-bg {
    background: radial-gradient(ellipse at 50% 0%, #001a0a 0%, var(--bg) 60%);
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    z-index: -1;
}

/* Typography */
h1 {
    font-family: 'Bebas Neue', cursive;
    font-size: clamp(52px, 10vw, 72px);
    letter-spacing: 0.04em;
    line-height: 0.9;
    text-align: center;
}

.accent-green { color: var(--green); }
.accent-cyan { color: var(--cyan); }

.tagline {
    font-family: 'Space Mono', monospace;
    font-size: 12px;
    letter-spacing: 0.2em;
    color: var(--green);
    margin-bottom: 12px;
}

.description {
    color: var(--muted);
    margin-top: 16px;
    font-size: 16px;
    text-align: center;
}

/* Cards */
.card {
    background: var(--card);
    border: 1px solid var(--border);
    border-radius: 12px;
    padding: 20px;
    width: 100%;
}

.card-accent-green {
    border-color: rgba(0, 255, 153, 0.27);
    box-shadow: 0 0 30px rgba(0, 255, 153, 0.1);
}

/* Progress bar */
.progress-container {
    background: var(--surface);
    border-radius: 4px;
    height: 8px;
    overflow: hidden;
    margin-top: 10px;
}

.progress-bar {
    height: 100%;
    background: linear-gradient(90deg, var(--green), var(--cyan));
    border-radius: 4px;
    transition: width 0.5s ease;
}

/* Form */
.form-group {
    margin-bottom: 14px;
}

label {
    font-size: 12px;
    color: var(--muted);
    letter-spacing: 0.1em;
    display: block;
    margin-bottom: 6px;
    text-transform: uppercase;
}

input {
    background: var(--surface);
    color: var(--text);
    border: 1px solid var(--border);
    border-radius: 8px;
    padding: 12px 14px;
    font-family: 'Space Grotesk', sans-serif;
    font-size: 15px;
    width: 100%;
    outline: none;
    transition: border-color 0.2s, box-shadow 0.2s;
}

input:focus {
    border-color: var(--cyan);
    box-shadow: 0 0 0 2px rgba(0, 212, 255, 0.13);
}

/* Buttons */
.btn {
    border: none;
    border-radius: 8px;
    padding: 14px 32px;
    font-size: 18px;
    font-weight: 700;
    font-family: 'Space Grotesk', sans-serif;
    cursor: pointer;
    letter-spacing: 0.03em;
    transition: transform 0.1s, box-shadow 0.2s;
    width: 100%;
    text-transform: uppercase;
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 10px;
}

.btn-primary {
    background: var(--green);
    color: var(--bg);
    box-shadow: 0 0 20px rgba(0, 255, 153, 0.27);
}

.btn-primary:active { transform: translateY(2px); }
.btn-primary:hover { box-shadow: 0 0 30px rgba(0, 255, 153, 0.5); }

.btn:disabled {
    background: var(--muted);
    cursor: not-allowed;
    box-shadow: none;
}

/* Animations */
@keyframes slideIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}

.slide-in {
    animation: slideIn 0.4s ease forwards;
}

/* Leaderboard-like list */
.list-item {
    display: flex;
    align-items: center;
    gap: 12px;
    padding: 12px 16px;
    background: var(--card);
    border-radius: 8px;
    border-left: 3px solid var(--border);
    margin-bottom: 8px;
}

.list-item.active { border-left-color: var(--cyan); }