:root {
    --bg-main: #eef2f6;          /* Soft slate light-grey, prevents harsh pure white brightness */
    --bg-secondary: #ffffff;     /* Crisp white for cards, panels, and header */
    --text-main: #1e293b;        /* Soft slate black for perfect legibility without being harsh */
    --text-muted: #64748b;       /* Cool slate grey for subtitles */
    --accent: #cbf200;           /* Restored original DBD Neon lime green-yellow */
    --accent-hover: #b8db00;     /* Restored original DBD Neon green hover */
    --accent-glow: rgba(203, 242, 0, 0.2); /* Restored original DBD Neon green glow */
    --border-color: #cbd5e1;     /* Highly visible but soft border to define elements clearly */
    --success: #10b981;
    --danger: #ef4444;
}

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

body {
    background-color: var(--bg-main);
    color: var(--text-main);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

/* Header & Branding */
header {
    background-color: var(--bg-secondary);
    padding: 1rem 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.brand {
    display: flex;
    align-items: center;
    gap: 1rem;
    font-size: 1.5rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    color: var(--text-main);
    text-decoration: none;
}

.brand-subtitle {
    font-size: 0.8rem;
    color: var(--accent);
    font-weight: 500;
    text-transform: uppercase;
    letter-spacing: 1px;
}

.nav-links {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.nav-links a {
    color: var(--text-muted);
    text-decoration: none;
    font-weight: 500;
    font-size: 0.95rem;
    transition: color 0.3s ease;
}

.nav-links a:hover, .nav-links a.active {
    color: var(--accent);
}

.btn {
    background-color: var(--accent);
    color: #000000;              /* Black text for high contrast on the neon brand green */
    border: none;
    padding: 0.6rem 1.4rem;
    border-radius: 8px;
    font-weight: 700;
    cursor: pointer;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    text-decoration: none;
    display: inline-block;
    box-shadow: 0 4px 12px var(--accent-glow);
}

.btn:hover {
    background-color: var(--accent-hover);
    color: #000000;              /* Ensure text remains black on hover */
    box-shadow: 0 6px 18px rgba(203, 242, 0, 0.35);
    transform: translateY(-1px);
}

.btn-secondary {
    background-color: transparent;
    color: var(--text-main);
    border: 1px solid var(--border-color);
    box-shadow: none;
}

.btn-secondary:hover {
    background-color: var(--bg-main);
    border-color: var(--accent);
    color: var(--accent);
    box-shadow: none;
}

.container {
    max-width: 1200px;
    margin: 0 auto;
    padding: 2.5rem 2rem;
    width: 100%;
    flex: 1;
}

.glass-panel {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 2rem;
    box-shadow: 0 10px 30px -15px rgba(15, 23, 42, 0.05);
}

.auth-container {
    max-width: 400px;
    margin: 4rem auto;
}

h1, h2, h3 {
    margin-bottom: 1.5rem;
    font-weight: 800;
    color: var(--text-main);
    letter-spacing: -0.5px;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: var(--text-muted);
    font-size: 0.9rem;
    font-weight: 500;
}

.form-control {
    width: 100%;
    background-color: var(--bg-secondary);
    border: 1px solid var(--border-color);
    color: var(--text-main);
    padding: 0.75rem 1rem;
    border-radius: 8px;
    font-size: 1rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 0 3px var(--accent-glow);
}

.grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
    gap: 1.75rem;
}

.match-card {
    background: var(--bg-secondary);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 1.75rem;
    text-align: center;
    transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.02);
}

.match-card:hover {
    transform: translateY(-4px);
    border-color: var(--accent);
    box-shadow: 0 10px 25px -10px rgba(15, 23, 42, 0.08);
}

.match-teams {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin: 1.25rem 0;
    font-size: 1.25rem;
    font-weight: 700;
}

.match-score-input {
    width: 60px;
    text-align: center;
    font-size: 1.5rem;
    font-weight: bold;
}

.footer {
    text-align: center;
    padding: 2.5rem 2rem;
    border-top: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.85rem;
    margin-top: auto;
    background-color: var(--bg-secondary);
}

.dbd-branding {
    color: var(--accent);
    font-weight: bold;
    letter-spacing: 1px;
}

.alert {
    padding: 1rem 1.25rem;
    border-radius: 8px;
    margin-bottom: 1.75rem;
    font-weight: 500;
    font-size: 0.95rem;
}

.alert-error {
    background-color: rgba(239, 68, 68, 0.06);
    color: var(--danger);
    border: 1px solid rgba(239, 68, 68, 0.15);
}

.alert-success {
    background-color: rgba(16, 185, 129, 0.06);
    color: var(--success);
    border: 1px solid rgba(16, 185, 129, 0.15);
}

table {
    width: 100%;
    border-collapse: collapse;
    margin-top: 1rem;
}

th, td {
    padding: 1rem 1.25rem;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

th {
    color: var(--text-muted);
    font-weight: 600;
    text-transform: uppercase;
    font-size: 0.8rem;
    letter-spacing: 1px;
    background-color: rgba(0, 0, 0, 0.015);
}

tr:hover td {
    background-color: rgba(0, 0, 0, 0.008);
}