/* Reset and Base Styles */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

body {
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #333;
}

/* Login Container */
.login-container {
    width: 100%;
    max-width: 400px;
    padding: 2rem;
}

.login-box {
    background: white;
    border-radius: 12px;
    box-shadow: 0 20px 40px rgba(0, 0, 0, 0.1);
    padding: 2.5rem;
    animation: slideUp 0.6s ease-out;
}

@keyframes slideUp {
    from {
        opacity: 0;
        transform: translateY(30px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Header */
.login-header {
    text-align: center;
    margin-bottom: 2rem;
}

.login-header h1 {
    color: #2d3748;
    font-size: 1.8rem;
    font-weight: 600;
    margin-bottom: 0.5rem;
}

.login-header p {
    color: #718096;
    font-size: 0.95rem;
}

/* Alerts */
.alert {
    padding: 0.75rem 1rem;
    border-radius: 6px;
    margin-bottom: 1.5rem;
    font-size: 0.9rem;
    animation: fadeIn 0.3s ease-out;
}

.alert-error {
    background: #fed7d7;
    color: #c53030;
    border: 1px solid #feb2b2;
}

.alert-success {
    background: #c6f6d5;
    color: #22543d;
    border: 1px solid #9ae6b4;
}

@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Form Styles */
.login-form {
    margin-bottom: 1.5rem;
}

.form-group {
    margin-bottom: 1.5rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.5rem;
    color: #2d3748;
    font-weight: 500;
    font-size: 0.9rem;
}

.form-group input[type="text"],
.form-group input[type="password"] {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid #e2e8f0;
    border-radius: 6px;
    font-size: 1rem;
    transition: border-color 0.2s ease, box-shadow 0.2s ease;
    background: #fff;
}

.form-group input:focus {
    outline: none;
    border-color: #667eea;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Checkbox */
.checkbox-group {
    display: flex;
    align-items: center;
}

.checkbox-group label {
    display: flex;
    align-items: center;
    cursor: pointer;
    margin-bottom: 0;
    font-size: 0.9rem;
}

.checkbox-group input[type="checkbox"] {
    display: none;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid #e2e8f0;
    border-radius: 3px;
    margin-right: 0.5rem;
    position: relative;
    transition: all 0.2s ease;
}

.checkbox-group input[type="checkbox"]:checked + .checkmark {
    background: #667eea;
    border-color: #667eea;
}

.checkbox-group input[type="checkbox"]:checked + .checkmark::after {
    content: '✓';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
    color: white;
    font-size: 12px;
    font-weight: bold;
}

/* Button */
.btn {
    display: inline-block;
    padding: 0.75rem 1.5rem;
    border: none;
    border-radius: 6px;
    font-size: 1rem;
    font-weight: 500;
    text-decoration: none;
    text-align: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-primary {
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    color: white;
}

.btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.3);
}

.btn-block {
    width: 100%;
}

/* Footer */
.login-footer {
    text-align: center;
    color: #718096;
    font-size: 0.85rem;
}

.login-footer a {
    color: #667eea;
    text-decoration: none;
}

.login-footer a:hover {
    text-decoration: underline;
}

.login-footer .copyright {
    margin-top: 1rem;
    color: #a0aec0;
}

/* Responsive */
@media (max-width: 480px) {
    .login-container {
        padding: 1rem;
    }

    .login-box {
        padding: 2rem;
    }

    .login-header h1 {
        font-size: 1.5rem;
    }
}