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

body {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

/* ===== KOTAK LOGIN / REGISTER ===== */
.auth-box {
    background: #fff;
    padding: 40px;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    width: 100%;
    max-width: 400px;
}

.auth-box h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #333;
}

.auth-box form {
    display: flex;
    flex-direction: column;
    gap: 15px;
}

.auth-box input {
    padding: 12px 15px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 15px;
    transition: border-color 0.3s;
}

.auth-box input:focus {
    outline: none;
    border-color: #667eea;
}

.auth-box button {
    padding: 12px;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: #fff;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: bold;
    cursor: pointer;
    transition: opacity 0.3s;
}

.auth-box button:hover {
    opacity: 0.9;
}

.auth-box p {
    text-align: center;
    margin-top: 20px;
    color: #666;
    font-size: 14px;
}

.auth-box a {
    color: #667eea;
    text-decoration: none;
    font-weight: bold;
}

/* ===== ALERT (PESAN ERROR / SUKSES) ===== */
.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    font-size: 14px;
    text-align: center;
}

.alert.error {
    background: #fde8e8;
    color: #c0392b;
    border: 1px solid #f5b7b1;
}

.alert.sukses {
    background: #e8f8f0;
    color: #1e8449;
    border: 1px solid #a9dfbf;
}