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

body {
    background: linear-gradient(135deg, #9eaab4 0%, #607b91 100%);
    min-height: 100vh;
    display: flex;
    justify-content: center;
    align-items: center;
    padding: 20px;
}

.auth-container {
    width: 100%;
    max-width: 450px;
}

.auth-card {
    background: white;
    border-radius: 15px;
    box-shadow: 0 15px 35px rgba(0, 0, 0, 0.2);
    overflow: hidden;
}

.auth-header {
    background: linear-gradient(135deg, #3a7bd5 0%, #00d2ff 100%);
    color: white;
    padding: 30px;
    text-align: center;
}

.auth-header i {
    font-size: 3rem;
    margin-bottom: 15px;
    display: block;
}

.auth-header h1 {
    font-size: 1.8rem;
    margin-bottom: 10px;
}

.auth-header p {
    opacity: 0.9;
    font-size: 0.95rem;
}

.auth-body {
    padding: 30px;
}

.form-group {
    margin-bottom: 20px;
}

.form-group label {
    display: block;
    margin-bottom: 8px;
    font-weight: 600;
    color: #2c3e50;
}

.input-with-icon {
    position: relative;
}

.input-icon {
    position: absolute;
    left: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #7f8c8d;
}

.input-with-icon input {
    width: 100%;
    padding: 12px 15px 12px 45px;
    border: 2px solid #e0e0e0;
    border-radius: 8px;
    font-size: 16px;
    transition: all 0.3s;
}

.input-with-icon input:focus {
    border-color: #3498db;
    outline: none;
    box-shadow: 0 0 0 3px rgba(52, 152, 219, 0.2);
}

.password-toggle {
    position: absolute;
    right: 15px;
    top: 50%;
    transform: translateY(-50%);
    color: #7f8c8d;
    cursor: pointer;
}

.auth-btn {
    width: 100%;
    padding: 14px;
    background: #3498db;
    color: white;
    border: none;
    border-radius: 8px;
    font-size: 16px;
    font-weight: 600;
    cursor: pointer;
    transition: background 0.3s;
    display: flex;
    justify-content: center;
    align-items: center;
    text-decoration: none;
}

.auth-btn i {
    margin-right: 10px;
}

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

.auth-links {
    text-align: center;
    margin-top: 20px;
}

.auth-links a {
    color: #3498db;
    text-decoration: none;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
}

.auth-links a i {
    margin-right: 8px;
}

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

.alert {
    padding: 12px 15px;
    border-radius: 8px;
    margin-bottom: 20px;
    display: flex;
    align-items: center;
}

.alert-success {
    background: #d4edda;
    color: #155724;
    border: 1px solid #c3e6cb;
}

.alert-error {
    background: #f8d7da;
    color: #721c24;
    border: 1px solid #f5c6cb;
    animation: shake 0.5s;
}

.alert i {
    margin-right: 10px;
}

.dev-info {
    background: #fff3cd;
    color: #856404;
    padding: 12px;
    border-radius: 6px;
    margin-top: 15px;
    font-size: 0.85rem;
    border: 1px solid #ffeaa7;
}

.dev-info a {
    color: #856404;
    word-break: break-all;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    10%, 30%, 50%, 70%, 90% { transform: translateX(-5px); }
    20%, 40%, 60%, 80% { transform: translateX(5px); }
}

@media (max-width: 480px) {
    .auth-card {
        margin: 10px;
    }
    
    .auth-header,
    .auth-body {
        padding: 20px;
    }
}