/* ==========================================================================
   H2 Hackathon Arena — Styles
   Adapted from Bookwise Push Copy Arena
   ========================================================================== */

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

:root {
    --primary: #6C3CE1;
    --primary-light: #8B5CF6;
    --primary-dark: #5224B5;
    --accent: #FF6B35;
    --accent-light: #FF8F66;
    --bg: #FAF7F2;
    --bg-card: #FFFFFF;
    --dark: #1A1A2E;
    --dark-soft: #2D2D44;
    --gray-100: #F5F5F0;
    --gray-200: #E8E5DF;
    --gray-300: #D1CDC5;
    --gray-400: #9E9A93;
    --gray-500: #6E6A63;
    --success: #22C55E;
    --warning: #F59E0B;
    --danger: #EF4444;
    --font-display: 'Space Grotesk', sans-serif;
    --font-body: 'Inter', sans-serif;
    --radius-sm: 8px;
    --radius-md: 12px;
    --radius-lg: 16px;
    --radius-xl: 24px;
    --shadow-sm: 0 1px 3px rgba(26,26,46,0.06);
    --shadow-md: 0 4px 12px rgba(26,26,46,0.08);
    --shadow-lg: 0 8px 30px rgba(26,26,46,0.12);
    --shadow-glow: 0 0 0 3px rgba(108,60,225,0.25);
    --transition: 0.2s ease;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
}

body {
    font-family: var(--font-body);
    background: var(--bg);
    color: var(--dark);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

h1, h2, h3, h4 {
    font-family: var(--font-display);
    font-weight: 700;
    line-height: 1.2;
}

a { color: var(--primary); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--primary-dark); }

/* --- Nav --- */
.nav {
    background: var(--dark);
    color: #fff;
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: 0 2px 12px rgba(26,26,46,0.15);
}
.nav-inner {
    max-width: 1100px;
    margin: 0 auto;
    padding: 0 24px;
    height: 60px;
    display: flex;
    align-items: center;
    gap: 32px;
}
.nav-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    color: #fff;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.1rem;
}
.logo-icon {
    background: var(--primary);
    color: #fff;
    width: 32px;
    height: 32px;
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 0.75rem;
    font-weight: 700;
}
.nav-links { display: flex; gap: 8px; flex: 1; }
.nav-link {
    color: rgba(255,255,255,0.6);
    font-size: 0.9rem;
    font-weight: 500;
    padding: 6px 14px;
    border-radius: var(--radius-sm);
    transition: all var(--transition);
}
.nav-link:hover { color: #fff; background: rgba(255,255,255,0.08); }
.nav-link.active { color: #fff; background: rgba(108,60,225,0.4); }
.nav-user {
    color: rgba(255,255,255,0.7);
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 8px;
}
.nav-logout {
    color: rgba(255,255,255,0.4);
    font-size: 0.8rem;
}
.nav-logout:hover { color: rgba(255,255,255,0.8); }

/* --- Main --- */
.main { flex: 1; max-width: 1100px; margin: 0 auto; padding: 32px 24px; width: 100%; }

/* --- Footer --- */
.footer {
    border-top: 1px solid var(--gray-200);
    padding: 16px 24px;
    text-align: center;
}
.footer-inner {
    max-width: 1100px;
    margin: 0 auto;
    font-size: 0.85rem;
    color: var(--gray-400);
}

/* --- Login --- */
.login-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    min-height: 60vh;
}
.login-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-lg);
    padding: 48px;
    max-width: 440px;
    width: 100%;
    text-align: center;
}
.login-title {
    font-size: 1.8rem;
    margin-bottom: 8px;
}
.login-subtitle {
    color: var(--gray-500);
    font-size: 0.95rem;
    margin-bottom: 32px;
    line-height: 1.5;
}
.login-label {
    display: block;
    text-align: left;
    font-weight: 600;
    font-size: 0.9rem;
    margin-bottom: 8px;
}
.login-select {
    width: 100%;
    padding: 12px 16px;
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-family: var(--font-body);
    background: var(--bg-card);
    appearance: none;
    cursor: pointer;
    margin-bottom: 20px;
    transition: border-color var(--transition);
}
.login-select:focus { outline: none; border-color: var(--primary); box-shadow: var(--shadow-glow); }
.login-btn {
    width: 100%;
    padding: 14px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: background var(--transition);
}
.login-btn:hover { background: var(--primary-dark); }

/* --- Category Tabs --- */
.category-tabs {
    display: flex;
    gap: 8px;
    justify-content: center;
}
.cat-tab {
    padding: 8px 20px;
    border-radius: var(--radius-xl);
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--gray-500);
    background: var(--gray-100);
    border: 2px solid transparent;
    transition: all var(--transition);
    display: flex;
    align-items: center;
    gap: 8px;
}
.cat-tab:hover { color: var(--dark); background: var(--gray-200); }
.cat-tab--active {
    color: var(--primary);
    background: #F0EBFF;
    border-color: var(--primary-light);
}
.cat-count {
    font-size: 0.75rem;
    background: rgba(0,0,0,0.06);
    padding: 2px 8px;
    border-radius: 12px;
}
.cat-tab--active .cat-count {
    background: rgba(108,60,225,0.15);
}

/* --- Vote --- */
.vote-wrapper { max-width: 900px; margin: 0 auto; }
.vote-header { text-align: center; margin-bottom: 32px; }
.vote-prompt {
    font-size: 1.1rem;
    color: var(--gray-500);
    margin-top: 16px;
}
.vote-arena {
    display: flex;
    align-items: stretch;
    gap: 0;
}
.card-column { flex: 1; display: flex; flex-direction: column; }
.vote-vs {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 0 20px;
    font-family: var(--font-display);
    font-weight: 700;
    font-size: 1.2rem;
    color: var(--gray-400);
}

/* --- Project Card --- */
.project-card {
    background: var(--bg-card);
    border: 2px solid var(--gray-200);
    border-radius: var(--radius-lg);
    padding: 32px 28px;
    cursor: pointer;
    transition: all var(--transition);
    flex: 1;
    display: flex;
    flex-direction: column;
    gap: 8px;
}
.project-card:hover {
    border-color: var(--primary-light);
    box-shadow: var(--shadow-md);
    transform: translateY(-2px);
}
.project-card:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: var(--shadow-glow);
}
.project-card.card--chosen {
    border-color: var(--success);
    background: #F0FFF4;
    box-shadow: 0 0 0 3px rgba(34,197,94,0.25);
}
.project-name {
    font-size: 1.3rem;
    color: var(--dark);
}
.project-team {
    font-size: 0.9rem;
    color: var(--primary);
    font-weight: 600;
}
.project-desc {
    font-size: 0.95rem;
    color: var(--gray-500);
    line-height: 1.5;
    margin-top: 4px;
}

/* --- Progress --- */
.vote-progress {
    margin-top: 32px;
    display: flex;
    align-items: center;
    gap: 16px;
}
.progress-bar {
    flex: 1;
    height: 6px;
    background: var(--gray-200);
    border-radius: 3px;
    overflow: hidden;
}
.progress-fill {
    height: 100%;
    background: var(--primary);
    border-radius: 3px;
    transition: width 0.4s ease;
}
.progress-text {
    font-size: 0.85rem;
    color: var(--gray-400);
    white-space: nowrap;
}
.vote-hint {
    text-align: center;
    margin-top: 16px;
    font-size: 0.85rem;
    color: var(--gray-400);
}
.vote-footer {
    text-align: center;
    margin-top: 16px;
}
.vote-math {
    margin-top: 8px;
    font-size: 0.8rem;
    color: var(--gray-400);
    line-height: 1.5;
    max-width: 500px;
    margin-left: auto;
    margin-right: auto;
}
.vote-math a {
    color: var(--gray-500);
    text-decoration: underline;
}
.vote-hint kbd {
    background: var(--gray-100);
    border: 1px solid var(--gray-300);
    border-radius: 4px;
    padding: 2px 8px;
    font-size: 0.85em;
    font-family: var(--font-body);
}

/* --- Done --- */
.done-message {
    text-align: center;
    padding: 64px 24px;
}
.done-message h2 {
    font-size: 1.5rem;
    margin-bottom: 8px;
}
.done-message p {
    color: var(--gray-500);
    margin-bottom: 24px;
}
.done-link {
    display: inline-block;
    padding: 12px 24px;
    background: var(--primary);
    color: #fff;
    border-radius: var(--radius-md);
    font-weight: 600;
    margin: 0 8px;
    transition: background var(--transition);
}
.done-link:hover { background: var(--primary-dark); color: #fff; }
.done-link--secondary {
    background: var(--gray-100);
    color: var(--dark);
}
.done-link--secondary:hover {
    background: var(--gray-200);
    color: var(--dark);
}

/* --- Copy Bar --- */
.copy-bar {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 20px;
    justify-content: center;
}
.copy-btn {
    padding: 10px 20px;
    background: var(--primary);
    color: #fff;
    border: none;
    border-radius: var(--radius-md);
    font-size: 0.9rem;
    font-weight: 600;
    font-family: var(--font-display);
    cursor: pointer;
    transition: background var(--transition);
}
.copy-btn:hover { background: var(--primary-dark); }
.copy-status {
    font-size: 0.85rem;
    color: var(--success);
    font-weight: 600;
}
.page-subtitle {
    text-align: center;
    color: var(--gray-500);
    font-size: 0.95rem;
    margin-bottom: 24px;
}

/* --- Leaderboard --- */
.leaderboard-wrapper { max-width: 900px; margin: 0 auto; }
.page-title { font-size: 1.8rem; margin-bottom: 16px; text-align: center; }
.leaderboard-meta {
    text-align: center;
    color: var(--gray-400);
    font-size: 0.9rem;
    margin-bottom: 24px;
}
.table-wrap { overflow-x: auto; }
.leaderboard-table {
    width: 100%;
    border-collapse: collapse;
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}
.leaderboard-table th {
    text-align: left;
    padding: 14px 16px;
    font-size: 0.8rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--gray-400);
    border-bottom: 2px solid var(--gray-200);
    font-family: var(--font-display);
}
.leaderboard-table td {
    padding: 14px 16px;
    font-size: 0.95rem;
    border-bottom: 1px solid var(--gray-100);
}
.leaderboard-table tr:last-child td { border-bottom: none; }
.col-rank { width: 50px; text-align: center; }
.col-elo { width: 80px; }
.col-wl { width: 80px; }
.col-winrate { width: 80px; }
.rank-badge {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 28px;
    height: 28px;
    border-radius: 50%;
    font-weight: 700;
    font-size: 0.85rem;
    font-family: var(--font-display);
}
.rank-gold { background: #FEF3C7; color: #92400E; }
.rank-silver { background: #F3F4F6; color: #374151; }
.rank-bronze { background: #FED7AA; color: #9A3412; }
.row-top-1 td { background: #FFFBEB; }
.row-top-2 td { background: #F9FAFB; }
.row-top-3 td { background: #FFF7ED; }

/* --- Responsive --- */
@media (max-width: 700px) {
    .vote-arena { flex-direction: column; gap: 16px; }
    .vote-vs { padding: 8px 0; }
    .nav-inner { gap: 16px; padding: 0 16px; }
    .nav-links { gap: 4px; }
    .nav-link { padding: 6px 10px; font-size: 0.8rem; }
    .login-card { padding: 32px 24px; }
    .project-card { padding: 24px 20px; }
}