/* ===============================
   GLOBAL RESET
=================================*/
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: 'Segoe UI', sans-serif;
    background: linear-gradient(135deg, #3498db, #2c3e50);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
}

/* ===============================
   AUTH CARD
=================================*/
.auth-container {
    background: #ffffff;
    width: 100%;
    max-width: 420px;
    padding: 35px;
    border-radius: 12px;
    box-shadow: 0 15px 40px rgba(0,0,0,0.2);
    animation: fadeIn 0.6s ease;
}

.auth-container h2 {
    text-align: center;
    margin-bottom: 25px;
    color: #2c3e50;
}

/* ===============================
   INPUTS
=================================*/
.auth-form input {
    width: 100%;
    padding: 12px 14px;
    margin-bottom: 18px;
    border: 1px solid #ddd;
    border-radius: 8px;
    font-size: 14px;
    transition: 0.3s;
}

.auth-form input:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 2px rgba(52,152,219,0.2);
}

/* ===============================
   BUTTON
=================================*/
.auth-btn {
    width: 100%;
    padding: 12px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 15px;
    cursor: pointer;
    transition: 0.3s;
}

.auth-btn:hover {
    background: #2980b9;
}

/* ===============================
   LINKS
=================================*/
.auth-link {
    text-align: center;
    margin-top: 15px;
    font-size: 14px;
}

.auth-link a {
    color: #3498db;
    text-decoration: none;
}

.auth-link a:hover {
    text-decoration: underline;
}

/* ===============================
   ALERTS
=================================*/
.alert-error {
    background: #f8d7da;
    color: #721c24;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    padding: 10px;
    border-radius: 6px;
    margin-bottom: 15px;
    font-size: 13px;
}

/* ===============================
   RESPONSIVE
=================================*/
@media (max-width: 480px) {
    .auth-container {
        padding: 25px;
        margin: 15px;
    }
}

/* ===============================
   ANIMATION
=================================*/
@keyframes fadeIn {
    from { opacity: 0; transform: translateY(20px); }
    to { opacity: 1; transform: translateY(0); }
}