:root {
    --bg-color: #0f172a;
    --text-color: #f8fafc;
    --accent-color: #38bdf8;
    --glass-bg: rgba(255, 255, 255, 0.1);
    --glass-border: rgba(255, 255, 255, 0.2);
    --input-bg: rgba(0, 0, 0, 0.3);
}

body {
    margin: 0;
    padding: 0;
    font-family: 'Segoe UI', system-ui, -apple-system, sans-serif;
    background: linear-gradient(135deg, #0f172a 0%, #1e293b 100%);
    color: var(--text-color);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
}

.container {
    background: var(--glass-bg);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    border: 1px solid var(--glass-border);
    border-radius: 16px;
    padding: 2.5rem;
    text-align: center;
    box-shadow: 0 4px 30px rgba(0, 0, 0, 0.1);
    width: 350px;
    transition: transform 0.3s ease;
}

h1 {
    font-size: 2rem;
    margin-bottom: 2rem;
    background: linear-gradient(to right, #38bdf8, #818cf8);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

input {
    width: 100%;
    padding: 12px;
    margin: 8px 0;
    box-sizing: border-box;
    border: 1px solid var(--glass-border);
    border-radius: 8px;
    background: var(--input-bg);
    color: white;
    font-size: 1rem;
    outline: none;
    transition: border-color 0.3s;
}

input:focus {
    border-color: var(--accent-color);
}

button {
    width: 100%;
    margin-top: 1.5rem;
    background: linear-gradient(135deg, #38bdf8 0%, #3b82f6 100%);
    border: none;
    padding: 12px;
    color: white;
    font-size: 1rem;
    font-weight: 600;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.3s ease;
}

button:hover {
    filter: brightness(1.1);
    transform: translateY(-1px);
}

.links {
    margin-top: 1.5rem;
    font-size: 0.9rem;
}

.links a {
    color: var(--accent-color);
    text-decoration: none;
    margin: 0 5px;
}

.links a:hover {
    text-decoration: underline;
}

.error {
    color: #f87171;
    font-size: 0.9rem;
    margin-top: 10px;
    min-height: 20px;
}