* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: 'Segoe UI', Tahoma, sans-serif;
}

body {
    height: 100vh;
    background: linear-gradient(135deg, #0f172a, #1e293b);
    display: flex;
    justify-content: center;
    align-items: center;
    color: #fff;
}

.page-wrapper {
    width: 100%;
    max-width: 420px;
    padding: 20px;
}

.card {
    background: rgba(255, 255, 255, 0.06);
    backdrop-filter: blur(12px);
    border-radius: 16px;
    padding: 30px;
    box-shadow: 0 10px 30px rgba(0,0,0,0.4);
    border: 1px solid rgba(255,255,255,0.08);
}

.title {
    font-size: 26px;
    font-weight: 700;
    text-align: center;
    margin-bottom: 6px;
}

.subtitle {
    text-align: center;
    font-size: 14px;
    opacity: 0.8;
    margin-bottom: 20px;
}

input {
    width: 100%;
    padding: 12px 14px;
    margin: 10px 0;
    border: none;
    border-radius: 10px;
    background: rgba(255,255,255,0.1);
    color: #fff;
    outline: none;
}

input::placeholder {
    color: rgba(255,255,255,0.6);
}

button {
    width: 100%;
    padding: 12px;
    margin-top: 12px;
    border: none;
    border-radius: 10px;
    background: #3b82f6;
    color: white;
    font-weight: 600;
    cursor: pointer;
    transition: 0.2s;
}

button:hover {
    background: #2563eb;
}

.links {
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
}

.links a {
    color: #60a5fa;
    text-decoration: none;
    font-weight: 600;
}

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

.divider {
    text-align: center;
    margin: 15px 0;
    opacity: 0.5;
}

.error {
    background: rgba(239, 68, 68, 0.15);
    border: 1px solid rgba(239, 68, 68, 0.4);
    padding: 10px;
    border-radius: 8px;
    margin-bottom: 10px;
    text-align: center;
    color: #fca5a5;
}

.welcome {
    text-align: center;
}

.welcome h2 {
    margin-bottom: 10px;
}

.welcome a {
    display: inline-block;
    margin-top: 15px;
    color: #60a5fa;
    text-decoration: none;
}

.btn {
    padding: 10px 20px;
    border-radius: 8px;
    text-decoration: none;
    margin: 5px;
    display: inline-block;
}

.logout {
    background: red;
    color: white;
}

.stay {
    background: green;
    color: white;
}