:root {
    --bg-color: #0f172a;
    --text-color: #f1f5f9;
    --primary-color: #3b82f6;
    --primary-hover: #2563eb;
    --glass-bg: rgba(30, 41, 59, 0.7);
    --glass-border: rgba(255, 255, 255, 0.1);
}

body {
    margin: 0;
    font-family: 'Inter', sans-serif;
    background-color: var(--bg-color);
    color: var(--text-color);
    line-height: 1.6;
}

header {
    position: sticky;
    top: 0;
    backdrop-filter: blur(10px);
    background: var(--glass-bg);
    border-bottom: 1px solid var(--glass-border);
    padding: 1rem 2rem;
    z-index: 100;
}

nav {
    display: flex;
    justify-content: space-between;
    align-items: center;
    max-width: 1200px;
    margin: 0 auto;
}

.logo {
    font-weight: 700;
    font-size: 1.5rem;
    background: linear-gradient(to right, #60a5fa, #a78bfa);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.nav-links a {
    color: var(--text-color);
    text-decoration: none;
    margin-left: 1.5rem;
    font-weight: 500;
    transition: color 0.2s;
}

.nav-links a:hover {
    color: var(--primary-color);
}

.btn-primary {
    background-color: var(--primary-color);
    padding: 0.5rem 1rem;
    border-radius: 0.5rem;
    color: white !important;
}

.btn-primary:hover {
    background-color: var(--primary-hover);
}

.btn-text {
    background: none;
    border: none;
    color: var(--text-color);
    font-family: inherit;
    font-size: 1rem;
    cursor: pointer;
    font-weight: 500;
    margin-left: 1.5rem;
}

.btn-text:hover {
    color: var(--primary-color);
}

.container {
    max-width: 800px;
    margin: 2rem auto;
    padding: 0 1rem;
}

.card {
    background: var(--glass-bg);
    border: 1px solid var(--glass-border);
    border-radius: 1rem;
    padding: 2rem;
    margin-bottom: 2rem;
}

h1, h2, h3 {
    margin-top: 0;
}

form p {
    margin-bottom: 1rem;
}

input[type="text"], input[type="password"], input[type="email"] {
    width: 100%;
    padding: 0.75rem;
    border-radius: 0.5rem;
    border: 1px solid #334155;
    background: #1e293b;
    color: white;
    box-sizing: border-box;
}

button[type="submit"] {
    background-color: var(--primary-color);
    color: white;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 0.5rem;
    cursor: pointer;
    font-weight: 600;
    width: 100%;
}