/* Auth Pages - Modern Design System */

:root {
    /* Primary Colors */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #0ea5e9;
    --primary-600: #0284c7;
    --primary-700: #0369a1;
    
    /* Neutral Colors */
    --neutral-50: #f9fafb;
    --neutral-100: #f3f4f6;
    --neutral-200: #e5e7eb;
    --neutral-300: #d1d5db;
    --neutral-400: #9ca3af;
    --neutral-500: #6b7280;
    --neutral-600: #4b5563;
    --neutral-700: #374151;
    --neutral-800: #1f2937;
    --neutral-900: #111827;
    
    /* Success Colors */
    --success-50: #f0fdf4;
    --success-500: #22c55e;
    --success-600: #16a34a;
    
    /* Error Colors */
    --error-50: #fef2f2;
    --error-500: #ef4444;
    --error-600: #dc2626;
    
    /* Design Tokens */
    --radius-sm: 6px;
    --radius-md: 8px;
    --radius-lg: 12px;
    --radius-xl: 16px;
    --radius-2xl: 20px;
    
    --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
    --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1), 0 2px 4px -2px rgb(0 0 0 / 0.1);
    --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1), 0 4px 6px -4px rgb(0 0 0 / 0.1);
    --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1), 0 8px 10px -6px rgb(0 0 0 / 0.1);
    
    --spacing-1: 0.25rem;
    --spacing-2: 0.5rem;
    --spacing-3: 0.75rem;
    --spacing-4: 1rem;
    --spacing-5: 1.25rem;
    --spacing-6: 1.5rem;
    --spacing-8: 2rem;
    --spacing-10: 2.5rem;
    --spacing-12: 3rem;
    --spacing-16: 4rem;
    
    --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 250ms cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 350ms cubic-bezier(0.4, 0, 0.2, 1);
}

/* Main Layout */
.auth-main {
    min-height: calc(100vh - 80px);
    background-color: var(--neutral-50);
    padding: var(--spacing-10) 0;
    display: flex;
    align-items: center;
    font-family: -apple-system, BlinkMacSystemFont, 'SF Pro Display', 'Segoe UI', system-ui, sans-serif;
}

.auth-layout {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-16);
    max-width: 1200px;
    margin: 0 auto;
    width: 100%;
    align-items: center;
    padding: 0 var(--spacing-6);
}

/* Visual Area */
.auth-visual {
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--spacing-10);
}

.visual-content {
    text-align: center;
    max-width: 500px;
}

.visual-icon {
    width: 120px;
    height: 120px;
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    margin: 0 auto var(--spacing-8);
    color: white;
    font-size: 48px;
    box-shadow: var(--shadow-xl);
    animation: pulse 2s infinite;
}

@keyframes pulse {
    0%, 100% {
        transform: scale(1);
    }
    50% {
        transform: scale(1.05);
    }
}

.visual-content h2 {
    font-size: 32px;
    font-weight: 700;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-4);
    line-height: 1.2;
}

.visual-content p {
    font-size: 18px;
    color: var(--neutral-500);
    line-height: 1.6;
    margin-bottom: var(--spacing-10);
}

.features {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-6);
    margin-top: var(--spacing-10);
}

.feature-item {
    display: flex;
    align-items: center;
    gap: var(--spacing-3);
    padding: var(--spacing-4);
    background: white;
    border-radius: var(--radius-xl);
    border: 1px solid var(--neutral-200);
    box-shadow: var(--shadow-sm);
    transition: var(--transition-normal);
}

.feature-item:hover {
    transform: translateY(-2px);
    box-shadow: var(--shadow-lg);
    border-color: var(--primary-200);
}

.feature-item i {
    width: 24px;
    height: 24px;
    background: var(--primary-50);
    color: var(--primary-500);
    border-radius: var(--radius-md);
    display: flex;
    align-items: center;
    justify-content: center;
    font-size: 14px;
    flex-shrink: 0;
}

.feature-item span {
    font-size: 14px;
    font-weight: 500;
    color: var(--neutral-900);
}

/* Form Container */
.auth-form-container {
    display: flex;
    justify-content: center;
}

.auth-card {
    background: white;
    border-radius: var(--radius-2xl);
    box-shadow: var(--shadow-xl);
    overflow: hidden;
    position: relative;
    border: 1px solid var(--neutral-200);
    width: 100%;
    max-width: 500px;
    animation: slideInUp 0.6s ease-out;
}

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

.auth-header {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-700) 100%);
    color: white;
    padding: var(--spacing-8);
    text-align: center;
    position: relative;
    overflow: hidden;
}

.auth-header::before {
    content: '';
    position: absolute;
    top: -50%;
    left: -50%;
    width: 200%;
    height: 200%;
    background: radial-gradient(circle, rgba(255,255,255,0.1) 0%, transparent 70%);
    animation: shimmer 3s infinite;
}

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

.logo {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    margin-bottom: var(--spacing-4);
    position: relative;
    z-index: 1;
}

.logo i {
    font-size: 32px;
}

.auth-header h1 {
    font-size: 24px;
    font-weight: 700;
    margin: 0;
    position: relative;
    z-index: 1;
}

.auth-header p {
    font-size: 14px;
    opacity: 0.9;
    margin: 0;
    position: relative;
    z-index: 1;
}

/* Form Styles */
.auth-form {
    padding: var(--spacing-8);
}

.form-group {
    margin-bottom: var(--spacing-5);
}

.form-group:last-child {
    margin-bottom: 0;
}

.form-group label {
    display: block;
    font-weight: 500;
    color: var(--neutral-900);
    margin-bottom: var(--spacing-2);
    font-size: 14px;
}

.form-group input,
.form-group select,
.form-group textarea {
    width: 100%;
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-lg);
    font-size: 14px;
    transition: var(--transition-normal);
    background-color: var(--neutral-50);
    font-family: inherit;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: none;
    border-color: var(--primary-500);
    box-shadow: 0 0 0 3px rgb(14 165 233 / 0.1);
    background-color: white;
}

.form-group input.error,
.form-group select.error,
.form-group textarea.error {
    border-color: var(--error-500);
    box-shadow: 0 0 0 3px rgb(239 68 68 / 0.1);
}

.form-group textarea {
    resize: vertical;
    min-height: 80px;
}

/* Password Input */
.password-input {
    position: relative;
}

.password-toggle {
    position: absolute;
    right: var(--spacing-3);
    top: 50%;
    transform: translateY(-50%);
    background: none;
    border: none;
    color: var(--neutral-500);
    cursor: pointer;
    padding: var(--spacing-1);
    border-radius: var(--radius-sm);
    transition: var(--transition-normal);
}

.password-toggle:hover {
    color: var(--primary-500);
    background-color: var(--neutral-100);
}

/* Form Options */
.form-options {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: var(--spacing-6);
    flex-wrap: wrap;
    gap: var(--spacing-3);
}

.checkbox-label {
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    cursor: pointer;
    font-size: 14px;
    color: var(--neutral-600);
}

.checkbox-label input[type="checkbox"] {
    width: auto;
    margin: 0;
}

.checkmark {
    width: 18px;
    height: 18px;
    border: 2px solid var(--neutral-300);
    border-radius: var(--radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    transition: var(--transition-normal);
}

.checkbox-label input[type="checkbox"]:checked + .checkmark {
    background: var(--primary-500);
    border-color: var(--primary-500);
    color: white;
}

.forgot-link {
    color: var(--primary-500);
    text-decoration: none;
    font-size: 14px;
    font-weight: 500;
    transition: var(--transition-normal);
}

.forgot-link:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

/* Form Actions */
.form-actions {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
    margin-top: var(--spacing-8);
}

.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-2);
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    border: 1px solid transparent;
    text-decoration: none;
    min-height: 48px;
}

.btn-primary {
    background: var(--primary-500);
    color: white;
}

.btn-primary:hover {
    background: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-lg);
}

.btn-full {
    width: 100%;
}

.btn-submit {
    background: linear-gradient(135deg, var(--primary-500) 0%, var(--primary-600) 100%);
    color: white;
    font-weight: 600;
}

.btn-submit:hover {
    background: linear-gradient(135deg, var(--primary-600) 0%, var(--primary-700) 100%);
    transform: translateY(-2px);
    box-shadow: var(--shadow-xl);
}

/* Social Login */
.divider {
    text-align: center;
    position: relative;
    margin: var(--spacing-6) 0;
}

.divider::before {
    content: '';
    position: absolute;
    top: 50%;
    left: 0;
    right: 0;
    height: 1px;
    background: var(--neutral-200);
}

.divider span {
    background: white;
    padding: 0 var(--spacing-4);
    color: var(--neutral-500);
    font-size: 14px;
    font-weight: 500;
}

.social-buttons {
    display: flex;
    flex-direction: column;
    gap: var(--spacing-3);
}

.btn-social {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-3);
    padding: var(--spacing-3) var(--spacing-4);
    border: 1px solid var(--neutral-300);
    border-radius: var(--radius-lg);
    background: white;
    color: var(--neutral-600);
    font-size: 14px;
    font-weight: 500;
    cursor: pointer;
    transition: var(--transition-normal);
    text-decoration: none;
    min-height: 48px;
}

.btn-social:hover {
    background: var(--neutral-50);
    border-color: var(--primary-300);
    color: var(--primary-600);
    transform: translateY(-1px);
    box-shadow: var(--shadow-md);
}

.btn-google:hover {
    border-color: #ea4335;
    color: #ea4335;
}

.btn-linkedin:hover {
    border-color: #0077b5;
    color: #0077b5;
}

/* Auth Footer */
.auth-footer {
    background-color: var(--neutral-50);
    padding: var(--spacing-5) var(--spacing-8);
    text-align: center;
    border-top: 1px solid var(--neutral-200);
}

.auth-footer p {
    margin: 0;
    color: var(--neutral-500);
    font-size: 14px;
}

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

.auth-footer a:hover {
    color: var(--primary-600);
    text-decoration: underline;
}

/* Form Rows */
.form-row {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-4);
}

/* Error Messages */
.error-message {
    color: var(--error-500);
    font-size: 12px;
    margin-top: var(--spacing-1);
    display: block;
}

.alert {
    padding: var(--spacing-3) var(--spacing-4);
    border-radius: var(--radius-lg);
    margin-bottom: var(--spacing-4);
    display: flex;
    align-items: center;
    gap: var(--spacing-2);
    font-size: 14px;
    border: 1px solid;
}

.alert-success {
    background: var(--success-50);
    color: var(--success-600);
    border-color: var(--success-200);
}

.alert-error {
    background: var(--error-50);
    color: var(--error-600);
    border-color: var(--error-200);
}

/* Loading State */
.btn.loading {
    position: relative;
    color: transparent;
    pointer-events: none;
}

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

@keyframes spin {
    0% { transform: translate(-50%, -50%) rotate(0deg); }
    100% { transform: translate(-50%, -50%) rotate(360deg); }
}

/* Responsive Design */
@media (max-width: 1024px) {
    .auth-layout {
        gap: var(--spacing-10);
    }
    
    .visual-content h2 {
        font-size: 28px;
    }
    
    .visual-content p {
        font-size: 16px;
    }
    
    .features {
        grid-template-columns: 1fr;
        gap: var(--spacing-4);
    }
}

@media (max-width: 768px) {
    .auth-main {
        padding: var(--spacing-5) 0;
    }
    
    .auth-layout {
        grid-template-columns: 1fr;
        gap: var(--spacing-10);
        padding: 0 var(--spacing-4);
    }
    
    .auth-visual {
        padding: var(--spacing-5);
        order: 2;
    }
    
    .auth-form-container {
        order: 1;
    }
    
    .visual-content h2 {
        font-size: 24px;
    }
    
    .visual-content p {
        font-size: 14px;
        margin-bottom: var(--spacing-8);
    }
    
    .visual-icon {
        width: 80px;
        height: 80px;
        font-size: 32px;
        margin-bottom: var(--spacing-6);
    }
    
    .features {
        grid-template-columns: 1fr 1fr;
        gap: var(--spacing-3);
    }
    
    .feature-item {
        padding: var(--spacing-3);
    }
    
    .feature-item span {
        font-size: 12px;
    }
    
    .auth-header {
        padding: var(--spacing-6);
    }
    
    .auth-form {
        padding: var(--spacing-6);
    }
    
    .form-row {
        grid-template-columns: 1fr;
        gap: 0;
    }
    
    .form-options {
        flex-direction: column;
        gap: var(--spacing-3);
        align-items: flex-start;
    }
}

@media (max-width: 480px) {
    .auth-layout {
        padding: 0 var(--spacing-3);
    }
    
    .auth-visual {
        padding: var(--spacing-4);
    }
    
    .visual-content h2 {
        font-size: 20px;
    }
    
    .visual-content p {
        font-size: 13px;
    }
    
    .features {
        grid-template-columns: 1fr;
    }
    
    .auth-header {
        padding: var(--spacing-5);
    }
    
    .auth-form {
        padding: var(--spacing-5);
    }
    
    .auth-footer {
        padding: var(--spacing-4) var(--spacing-5);
    }
}

/* Accessibility */
.btn:focus,
.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
    outline: 2px solid var(--primary-500);
    outline-offset: 2px;
}

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