/* ===================================
   Auth Pages - Login & Register Styles
   =================================== */

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

body, html {
    height: 100%;
    font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
    line-height: 1.6;
    color: #1e293b;
    overflow-x: hidden;
}

/* CSS Variables */
:root {
    --primary-color: #2563eb;
    --primary-dark: #1d4ed8;
    --primary-light: #3b82f6;
    --secondary-color: #64748b;
    --success-color: #059669;
    --warning-color: #d97706;
    --danger-color: #dc2626;
    --dark-color: #1e293b;
    --light-color: #f8fafc;
    --white: #ffffff;
    --gray-50: #f9fafb;
    --gray-100: #f3f4f6;
    --gray-200: #e5e7eb;
    --gray-300: #d1d5db;
    --gray-400: #9ca3af;
    --gray-500: #6b7280;
    --gray-600: #4b5563;
    --gray-700: #374151;
    --gray-800: #1f2937;
    --gray-900: #111827;
    --gradient-primary: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
    --gradient-secondary: linear-gradient(135deg, #f093fb 0%, #f5576c 100%);
    --gradient-success: linear-gradient(135deg, #4facfe 0%, #00f2fe 100%);
    --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    --shadow-2xl: 0 25px 50px -12px rgba(0, 0, 0, 0.25);
    --border-radius: 12px;
    --border-radius-lg: 16px;
    --border-radius-xl: 20px;
    --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

/* Auth Container */
.auth-container {
    min-height: 100vh;
    display: flex;
    position: relative;
    background: linear-gradient(135deg, #667eea 0%, #764ba2 100%);
}

/* Background Section */
.auth-background {
    flex: 1;
    position: relative;
    display: flex;
    align-items: center;
    justify-content: center;
    background: linear-gradient(135deg, rgba(102, 126, 234, 0.9) 0%, rgba(118, 75, 162, 0.9) 100%),
                url('https://images.unsplash.com/photo-1497366216548-37526070297c?ixlib=rb-4.0.3&ixid=M3wxMjA3fDB8MHxwaG90by1wYWdlfHx8fGVufDB8fHx8fA%3D%3D&auto=format&fit=crop&w=2069&q=80') center/cover;
    overflow: hidden;
}

.auth-background::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: url('data:image/svg+xml,<svg xmlns="http://www.w3.org/2000/svg" viewBox="0 0 100 100"><defs><pattern id="authPattern" width="20" height="20" patternUnits="userSpaceOnUse"><circle cx="10" cy="10" r="1" fill="rgba(255,255,255,0.1)"/></pattern></defs><rect width="100" height="100" fill="url(%23authPattern)"/></svg>');
    opacity: 0.3;
}

.auth-background-content {
    position: relative;
    z-index: 1;
    color: white;
    text-align: center;
    max-width: 500px;
    padding: 2rem;
}

.auth-background-content h1 {
    font-size: 3.5rem;
    font-weight: 800;
    margin-bottom: 1.5rem;
    text-shadow: 0 4px 8px rgba(0, 0, 0, 0.3);
    line-height: 1.1;
}

.auth-background-content p {
    font-size: 1.25rem;
    opacity: 0.9;
    margin-bottom: 2rem;
    text-shadow: 0 2px 4px rgba(0, 0, 0, 0.3);
}

.auth-features {
    display: grid;
    gap: 1rem;
    margin-top: 2rem;
}

.auth-feature {
    display: flex;
    align-items: center;
    padding: 1rem;
    background: rgba(255, 255, 255, 0.1);
    border-radius: var(--border-radius);
    backdrop-filter: blur(10px);
    border: 1px solid rgba(255, 255, 255, 0.2);
}

.auth-feature-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: rgba(255, 255, 255, 0.2);
    display: flex;
    align-items: center;
    justify-content: center;
    margin-right: 1rem;
    font-size: 1.25rem;
}

.auth-feature-content h3 {
    font-size: 1.1rem;
    font-weight: 600;
    margin-bottom: 0.25rem;
    text-align: left;
}

.auth-feature-content p {
    font-size: 0.9rem;
    opacity: 0.8;
    margin: 0;
    text-align: left;
}

/* Form Section */
.auth-form-section {
    width: 100%;
    max-width: 500px;
    background: white;
    display: flex;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    position: relative;
    box-shadow: var(--shadow-2xl);
}

.auth-form-container {
    width: 100%;
    max-width: 400px;
}

.auth-brand {
    text-align: center;
    margin-bottom: 2rem;
}

.auth-brand-logo {
    width: 60px;
    height: 60px;
    background: var(--gradient-primary);
    border-radius: var(--border-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 1rem;
    font-size: 1.5rem;
    color: white;
    font-weight: bold;
}

.auth-brand h2 {
    font-size: 1.75rem;
    font-weight: 800;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
}

.auth-brand p {
    color: var(--secondary-color);
    margin: 0;
}

/* Form Styles */
.auth-form {
    width: 100%;
}

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

.form-label {
    display: block;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.5rem;
    font-size: 0.875rem;
    letter-spacing: 0.025em;
}

.form-control {
    width: 100%;
    padding: 0.875rem 1rem;
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    font-size: 1rem;
    transition: var(--transition);
    background: white;
    color: var(--dark-color);
}

.form-control:focus {
    outline: none;
    border-color: var(--primary-color);
    box-shadow: 0 0 0 3px rgba(37, 99, 235, 0.1);
    transform: translateY(-1px);
}

.form-control.is-invalid {
    border-color: var(--danger-color);
    box-shadow: 0 0 0 3px rgba(220, 38, 38, 0.1);
}

.invalid-feedback {
    color: var(--danger-color);
    font-size: 0.875rem;
    margin-top: 0.5rem;
    display: block;
}

/* Role Selection */
.role-selection {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 1rem;
    margin-bottom: 1.5rem;
}

.role-option {
    position: relative;
    cursor: pointer;
}

.role-option input[type="radio"] {
    position: absolute;
    opacity: 0;
    width: 100%;
    height: 100%;
    margin: 0;
    cursor: pointer;
}

.role-card {
    background: var(--gray-50);
    border: 2px solid var(--gray-200);
    border-radius: var(--border-radius);
    padding: 1.25rem 1rem;
    text-align: center;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
}

.role-card::before {
    content: '';
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    height: 3px;
    background: var(--gradient-primary);
    transform: scaleX(0);
    transition: var(--transition);
}

.role-option input[type="radio"]:checked + .role-card {
    border-color: var(--primary-color);
    background: rgba(37, 99, 235, 0.05);
    transform: translateY(-2px);
    box-shadow: var(--shadow-md);
}

.role-option input[type="radio"]:checked + .role-card::before {
    transform: scaleX(1);
}

.role-icon {
    width: 48px;
    height: 48px;
    border-radius: 50%;
    background: var(--gray-200);
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto 0.75rem;
    font-size: 1.25rem;
    color: var(--secondary-color);
    transition: var(--transition);
}

.role-option input[type="radio"]:checked + .role-card .role-icon {
    background: var(--gradient-primary);
    color: white;
    transform: scale(1.05);
}

.role-title {
    font-size: 1rem;
    font-weight: 600;
    color: var(--dark-color);
    margin-bottom: 0.25rem;
}

.role-description {
    font-size: 0.8rem;
    color: var(--secondary-color);
    line-height: 1.3;
}

/* Password Strength */
.password-strength {
    margin-top: 0.5rem;
}

.strength-bar {
    height: 3px;
    border-radius: 1.5px;
    background: var(--gray-200);
    margin-top: 0.25rem;
    overflow: hidden;
}

.strength-fill {
    height: 100%;
    transition: var(--transition);
    border-radius: 1.5px;
}

.strength-weak .strength-fill {
    width: 33%;
    background: var(--danger-color);
}

.strength-medium .strength-fill {
    width: 66%;
    background: var(--warning-color);
}

.strength-strong .strength-fill {
    width: 100%;
    background: var(--success-color);
}

.strength-text {
    font-size: 0.75rem;
    color: var(--secondary-color);
    margin-top: 0.25rem;
}

/* Checkbox */
.form-check {
    display: flex;
    align-items: flex-start;
    margin-bottom: 1.5rem;
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin-top: 2px;
    margin-right: 0.75rem;
    border: 2px solid var(--gray-300);
    border-radius: 4px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.form-check-label {
    font-size: 0.875rem;
    color: var(--secondary-color);
    line-height: 1.4;
    cursor: pointer;
}

.form-check-label a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

.form-check-label a:hover {
    text-decoration: underline;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    padding: 0.875rem 1.5rem;
    border: none;
    border-radius: var(--border-radius);
    font-size: 1rem;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    transition: var(--transition);
    position: relative;
    overflow: hidden;
    width: 100%;
}

.btn-primary {
    background: var(--gradient-primary);
    color: white;
    box-shadow: var(--shadow-md);
}

.btn-primary:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    color: white;
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    transform: none;
}

.btn-link {
    background: transparent;
    color: var(--primary-color);
    padding: 0.5rem 1rem;
    font-weight: 500;
}

.btn-link:hover {
    background: rgba(37, 99, 235, 0.05);
    color: var(--primary-dark);
}

/* Links */
.auth-links {
    text-align: center;
    margin-top: 1.5rem;
    padding-top: 1.5rem;
    border-top: 1px solid var(--gray-200);
}

.auth-links p {
    color: var(--secondary-color);
    margin: 0;
}

.auth-links a {
    color: var(--primary-color);
    text-decoration: none;
    font-weight: 500;
}

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

/* Alerts */
.alert {
    padding: 1rem;
    border-radius: var(--border-radius);
    margin-bottom: 1.5rem;
    border: none;
    font-size: 0.875rem;
}

.alert-danger {
    background: rgba(220, 38, 38, 0.1);
    color: var(--danger-color);
    border-left: 4px solid var(--danger-color);
}

.alert-success {
    background: rgba(5, 150, 105, 0.1);
    color: var(--success-color);
    border-left: 4px solid var(--success-color);
}

.alert-info {
    background: rgba(37, 99, 235, 0.1);
    color: var(--primary-color);
    border-left: 4px solid var(--primary-color);
}

.alert ul {
    margin: 0;
    padding-left: 1.25rem;
}

.alert li {
    margin-bottom: 0.25rem;
}

.alert li:last-child {
    margin-bottom: 0;
}

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

.btn-loading::after {
    content: '';
    position: absolute;
    width: 20px;
    height: 20px;
    top: 50%;
    left: 50%;
    margin-left: -10px;
    margin-top: -10px;
    border: 2px solid transparent;
    border-top-color: currentColor;
    border-radius: 50%;
    animation: spin 1s linear infinite;
}

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

/* Floating Animation */
.floating {
    animation: floating 6s ease-in-out infinite;
}

@keyframes floating {
    0%, 100% { transform: translateY(0px); }
    50% { transform: translateY(-20px); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .auth-background {
        display: none;
    }
    
    .auth-form-section {
        max-width: 100%;
        min-height: 100vh;
        background: linear-gradient(135deg, rgba(102, 126, 234, 0.05) 0%, rgba(118, 75, 162, 0.05) 100%);
    }
}

@media (max-width: 768px) {
    .auth-form-section {
        padding: 1.5rem;
    }
    
    .auth-form-container {
        max-width: 100%;
    }
    
    .role-selection {
        grid-template-columns: 1fr;
        gap: 0.75rem;
    }
    
    .role-card {
        padding: 1rem 0.75rem;
    }
    
    .role-icon {
        width: 40px;
        height: 40px;
        font-size: 1.1rem;
    }
    
    .auth-background-content h1 {
        font-size: 2.5rem;
    }
    
    .auth-background-content p {
        font-size: 1.1rem;
    }
}

@media (max-width: 480px) {
    .auth-form-section {
        padding: 1rem;
    }
    
    .auth-brand h2 {
        font-size: 1.5rem;
    }
    
    .form-control {
        padding: 0.75rem;
    }
    
    .btn {
        padding: 0.75rem 1.25rem;
    }
}

/* Print Styles */
@media print {
    .auth-container {
        display: none;
    }
}

/* Accessibility */
@media (prefers-reduced-motion: reduce) {
    *,
    *::before,
    *::after {
        animation-duration: 0.01ms !important;
        animation-iteration-count: 1 !important;
        transition-duration: 0.01ms !important;
        scroll-behavior: auto !important;
    }
}

/* Focus Styles */
.form-control:focus,
.btn:focus,
.form-check-input:focus,
.role-option input:focus + .role-card {
    outline: 2px solid var(--primary-color);
    outline-offset: 2px;
}

/* Dark Mode Support */
@media (prefers-color-scheme: dark) {
    .auth-form-section {
        background: var(--gray-900);
        color: white;
    }
    
    .auth-brand h2 {
        color: white;
    }
    
    .form-control {
        background: var(--gray-800);
        border-color: var(--gray-700);
        color: white;
    }
    
    .form-control:focus {
        border-color: var(--primary-color);
        background: var(--gray-800);
    }
    
    .role-card {
        background: var(--gray-800);
        border-color: var(--gray-700);
    }
    
    .role-option input[type="radio"]:checked + .role-card {
        background: rgba(37, 99, 235, 0.2);
    }
}