:root {
    --bg-dark: #0f172a;
    --card-bg: #1e293b;
    --accent: #00d4ff;
    --gold: #FFD700;
    --text: #f8fafc;
}

body {
    margin: 0;
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background-color: var(--bg-dark);
    color: var(--text);
    line-height: 1.6;
}

nav {
    background: rgba(30, 41, 59, 0.8);
    backdrop-filter: blur(10px);
    padding: 1rem 5%;
    display: flex;
    justify-content: space-between;
    align-items: center;
    position: sticky;
    top: 0;
    z-index: 1000;
    border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.logo {
    font-size: 1.5rem;
    font-weight: 800;
    letter-spacing: 2px;
    color: var(--accent);
}

nav ul {
    list-style: none;
    display: flex;
    gap: 20px;
}

nav a {
    color: var(--text);
    text-decoration: none;
    font-weight: 500;
    transition: 0.3s;
}

nav a:hover {
    color: var(--accent);
}

.container {
    max-width: 1000px;
    margin: 40px auto;
    padding: 20px;
}

.card {
    background: var(--card-bg);
    padding: 25px;
    border-radius: 15px;
    border: 1px solid rgba(255, 255, 255, 0.05);
    box-shadow: 0 10px 30px rgba(0,0,0,0.3);
    transition: transform 0.3s ease;
}

.card:hover {
    transform: translateY(-5px);
    border-color: var(--accent);
}

.btn {
    background: linear-gradient(45deg, var(--accent), #0055ff);
    color: white;
    padding: 12px 25px;
    border: none;
    border-radius: 8px;
    cursor: pointer;
    font-weight: bold;
    text-transform: uppercase;
    transition: 0.3s;
    text-decoration: none;
    display: inline-block;
}

.btn:hover {
    filter: brightness(1.2);
    box-shadow: 0 0 20px rgba(0, 212, 255, 0.4);
}

input, textarea {
    background: #334155;
    border: 1px solid #475569;
    color: white;
    padding: 12px;
    border-radius: 8px;
}

footer {
    text-align: center;
    padding: 40px;
    font-size: 0.9rem;
    opacity: 0.7;
}