:root {
    --bg-dark: #0f172a;
    --card-bg: #1e293b;
    --card-border: #334155;
    --text-main: #f8fafc;
}

body {
    background-color: var(--bg-dark);
    color: var(--text-main);
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

.navbar-dark-custom {
    background: rgba(30, 41, 59, 0.85);
    backdrop-filter: blur(12px);
    border-bottom: 1px solid var(--card-border);
}

.glass-card {
    background: rgba(30, 41, 59, 0.75);
    backdrop-filter: blur(10px);
    border: 1px solid var(--card-border);
    border-radius: 1rem;
    box-shadow: 0 10px 25px -5px rgba(0, 0, 0, 0.3);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.glass-card:hover {
    box-shadow: 0 15px 30px -5px rgba(99, 102, 241, 0.2);
}

.gradient-text {
    background: linear-gradient(135deg, #818cf8, #38bdf8, #34d399);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.gradient-btn {
    background: linear-gradient(135deg, #6366f1, #0284c7);
    color: #fff;
    border: none;
    font-weight: 600;
    transition: all 0.3s ease;
}

.gradient-btn:hover {
    background: linear-gradient(135deg, #4f46e5, #0369a1);
    color: #fff;
    transform: translateY(-2px);
    box-shadow: 0 8px 20px rgba(99, 102, 241, 0.4);
}

.form-control-dark {
    background-color: #0f172a;
    border: 1px solid #334155;
    color: #f8fafc;
    border-radius: 0.5rem;
}

.form-control-dark:focus {
    background-color: #0f172a;
    border-color: #818cf8;
    color: #f8fafc;
    box-shadow: 0 0 0 0.25rem rgba(129, 140, 248, 0.25);
}

.code-block {
    background: #090d16;
    border: 1px solid #1e293b;
    border-radius: 0.5rem;
    padding: 1rem;
    color: #38bdf8;
    font-family: 'Fira Code', monospace;
    font-size: 0.9rem;
    overflow-x: auto;
}

.announcement-bar {
    background: linear-gradient(90deg, rgba(99,102,241,0.2) 0%, rgba(6,182,212,0.2) 100%);
    border-bottom: 1px solid rgba(99,102,241,0.3);
    color: #e2e8f0;
    font-size: 0.9rem;
}

footer {
    margin-top: auto;
    border-top: 1px solid var(--card-border);
    background: #090d16;
}