/* Authentication Styles */
:root {
    --primary-color: #007bff;
    --primary-hover: #0056b3;
    --success-color: #28a745;
    --warning-color: #ffc107;
    --danger-color: #dc3545;
    --light-bg: #f8f9fa;
    --border-radius: 0.5rem;
    --shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075);
    --shadow-lg: 0 1rem 3rem rgba(0, 0, 0, 0.175);
}

body {
    font-family: 'Segoe UI', Tahoma, Geneva, Verdana, sans-serif;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    min-height: 100vh;
}

.auth-form-container {
    animation: slideInUp 0.6s ease-out;
}

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

.card {
    border: none;
    border-radius: var(--border-radius);
    box-shadow: var(--shadow-lg);
    backdrop-filter: blur(10px);
    background: rgba(255, 255, 255, 0.95);
}

.card-body {
    padding: 2rem;
}

.form-control {
    border-radius: var(--border-radius);
    border: 1px solid #e9ecef;
    padding: 0.75rem 1rem;
    font-size: 0.95rem;
    transition: all 0.3s ease;
}

.form-control:focus {
    border-color: var(--primary-color);
    box-shadow: 0 0 0 0.2rem rgba(0, 123, 255, 0.25);
    transform: translateY(-1px);
}

.input-group-text {
    background: var(--light-bg);
    border: 1px solid #e9ecef;
    border-radius: var(--border-radius);
    color: #6c757d;
}

.btn {
    border-radius: var(--border-radius);
    padding: 0.75rem 1.5rem;
    font-weight: 500;
    transition: all 0.3s ease;
    text-transform: none;
}

.btn:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 8px rgba(0, 0, 0, 0.15);
}

.btn-primary {
    background: linear-gradient(45deg, var(--primary-color), #6610f2);
    border: none;
}

.btn-primary:hover {
    background: linear-gradient(45deg, var(--primary-hover), #520dc2);
}

.btn-outline-primary {
    border: 2px solid var(--primary-color);
    color: var(--primary-color);
}

.btn-outline-primary:hover {
    background: var(--primary-color);
    border-color: var(--primary-color);
    color: white;
}

.alert {
    border-radius: var(--border-radius);
    border: none;
    margin-bottom: 1.5rem;
}

.alert-dismissible {
    padding-right: 4rem;
}

.form-check-input:checked {
    background-color: var(--primary-color);
    border-color: var(--primary-color);
}

.text-decoration-none:hover {
    text-decoration: underline !important;
}

/* Form validation styles */
.form-control.is-invalid {
    border-color: var(--danger-color);
    animation: shake 0.5s ease-in-out;
}

@keyframes shake {
    0%, 100% { transform: translateX(0); }
    25% { transform: translateX(-5px); }
    75% { transform: translateX(5px); }
}

.invalid-feedback {
    display: block;
    width: 100%;
    margin-top: 0.25rem;
    font-size: 0.875rem;
    color: var(--danger-color);
}

/* Loading states */
.btn.loading {
    position: relative;
    color: transparent;
}

.btn.loading::after {
    content: "";
    position: absolute;
    width: 16px;
    height: 16px;
    margin: auto;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
    top: 0;
    left: 0;
    bottom: 0;
    right: 0;
}

@keyframes spin {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

/* Responsive design */
@media (max-width: 768px) {
    .card-body {
        padding: 1.5rem;
    }
    
    .btn {
        padding: 0.625rem 1.25rem;
    }
    
    .display-4 {
        font-size: 2rem;
    }
}

/* Dark theme support */
[data-bs-theme="dark"] {
    --light-bg: #495057;
}

[data-bs-theme="dark"] body {
    background: linear-gradient(135deg, #2c3e50 0%, #34495e 100%);
}

[data-bs-theme="dark"] .card {
    background: rgba(33, 37, 41, 0.95);
    color: #fff;
}

[data-bs-theme="dark"] .form-control {
    background-color: #495057;
    border-color: #6c757d;
    color: #fff;
}

[data-bs-theme="dark"] .form-control:focus {
    background-color: #495057;
    border-color: var(--primary-color);
    color: #fff;
}

[data-bs-theme="dark"] .input-group-text {
    background-color: #495057;
    border-color: #6c757d;
    color: #adb5bd;
}

/* Accessibility improvements */
.form-control:focus,
.btn:focus {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Print styles */
@media print {
    body {
        background: white !important;
    }
    
    .card {
        box-shadow: none !important;
        border: 1px solid #dee2e6 !important;
    }
}