/**
 * LuggageTribe Design System
 * Unified styling for consistency across the platform
 */

:root {
    /* Primary Colors - LuggageTribe Blue */
    --lt-primary: #013777;
    --lt-primary-dark: #002855;
    --lt-primary-light: #1a4a8f;
    --lt-secondary: #34CCFF;
    --lt-secondary-dark: #00b8e6;
    --lt-secondary-light: #5dd5ff;
    
    /* Status Colors */
    --lt-success: #10b981;
    --lt-success-light: #d1fae5;
    --lt-warning: #f59e0b;
    --lt-warning-light: #fef3c7;
    --lt-danger: #ef4444;
    --lt-danger-light: #fee2e2;
    --lt-info: #3b82f6;
    --lt-info-light: #dbeafe;
    
    /* Neutral Colors */
    --lt-light: #f8fafc;
    --lt-light-gray: #e2e8f0;
    --lt-gray: #94a3b8;
    --lt-dark: #1e293b;
    --lt-dark-gray: #475569;
    
    /* Typography */
    --lt-font-primary: 'Poppins', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --lt-font-heading: 'Playfair Display', Georgia, serif;
    
    /* Spacing */
    --lt-spacing-xs: 0.25rem;
    --lt-spacing-sm: 0.5rem;
    --lt-spacing-md: 1rem;
    --lt-spacing-lg: 1.5rem;
    --lt-spacing-xl: 2rem;
    --lt-spacing-2xl: 3rem;
    
    /* Border Radius */
    --lt-radius-sm: 0.375rem;
    --lt-radius-md: 0.5rem;
    --lt-radius-lg: 0.75rem;
    --lt-radius-xl: 1rem;
    --lt-radius-2xl: 1.5rem;
    
    /* Shadows */
    --lt-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --lt-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --lt-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --lt-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);
    
    /* Transitions */
    --lt-transition: all 0.3s ease;
    --lt-transition-fast: all 0.15s ease;
}

/* ============================================
   BUTTONS - Consistent Styling
   ============================================ */
.btn-lt-primary {
    background: linear-gradient(135deg, var(--lt-primary), var(--lt-secondary));
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--lt-radius-md);
    font-weight: 500;
    font-size: 0.95rem;
    transition: var(--lt-transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    text-decoration: none;
}

.btn-lt-primary:hover:not(:disabled) {
    background: linear-gradient(135deg, var(--lt-primary-dark), var(--lt-secondary-dark));
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-lg);
    color: white;
}

.btn-lt-primary:disabled,
.btn-lt-primary.loading {
    opacity: 0.6;
    cursor: not-allowed;
    pointer-events: none;
}

.btn-lt-secondary {
    background: white;
    color: var(--lt-primary);
    border: 2px solid var(--lt-primary);
    padding: 0.75rem 1.5rem;
    border-radius: var(--lt-radius-md);
    font-weight: 500;
    transition: var(--lt-transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-lt-secondary:hover:not(:disabled) {
    background: var(--lt-primary);
    color: white;
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-md);
}

.btn-lt-success {
    background: var(--lt-success);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--lt-radius-md);
    font-weight: 500;
    transition: var(--lt-transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-lt-success:hover:not(:disabled) {
    background: #059669;
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-md);
}

.btn-lt-danger {
    background: var(--lt-danger);
    color: white;
    border: none;
    padding: 0.75rem 1.5rem;
    border-radius: var(--lt-radius-md);
    font-weight: 500;
    transition: var(--lt-transition);
    cursor: pointer;
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
}

.btn-lt-danger:hover:not(:disabled) {
    background: #dc2626;
    transform: translateY(-2px);
    box-shadow: var(--lt-shadow-md);
}

/* Button Loading State */
.btn-lt-primary .spinner-border,
.btn-lt-secondary .spinner-border,
.btn-lt-success .spinner-border,
.btn-lt-danger .spinner-border {
    width: 1rem;
    height: 1rem;
    border-width: 2px;
}

/* ============================================
   CARDS - Consistent Styling
   ============================================ */
.lt-card {
    background: white;
    border-radius: var(--lt-radius-xl);
    padding: var(--lt-spacing-xl);
    box-shadow: var(--lt-shadow-md);
    transition: var(--lt-transition);
    border: 1px solid var(--lt-light-gray);
}

.lt-card:hover {
    box-shadow: var(--lt-shadow-lg);
    transform: translateY(-2px);
}

.lt-card-header {
    border-bottom: 2px solid var(--lt-light-gray);
    padding-bottom: var(--lt-spacing-md);
    margin-bottom: var(--lt-spacing-lg);
}

.lt-card-title {
    color: var(--lt-primary);
    font-family: var(--lt-font-heading);
    font-weight: 600;
    font-size: 1.5rem;
    margin: 0;
}

.lt-card-body {
    color: var(--lt-dark-gray);
    line-height: 1.6;
}

/* ============================================
   FORMS - Consistent Styling
   ============================================ */
.lt-form-group {
    margin-bottom: var(--lt-spacing-lg);
}

.lt-form-label {
    display: block;
    font-weight: 500;
    color: var(--lt-dark);
    margin-bottom: var(--lt-spacing-sm);
    font-size: 0.95rem;
}

.lt-form-control {
    width: 100%;
    padding: 0.75rem 1rem;
    border: 2px solid var(--lt-light-gray);
    border-radius: var(--lt-radius-md);
    font-size: 1rem;
    transition: var(--lt-transition);
    font-family: var(--lt-font-primary);
}

.lt-form-control:focus {
    outline: none;
    border-color: var(--lt-primary);
    box-shadow: 0 0 0 3px rgba(1, 55, 119, 0.1);
}

.lt-form-control:disabled {
    background-color: var(--lt-light);
    cursor: not-allowed;
}

.lt-form-error {
    color: var(--lt-danger);
    font-size: 0.875rem;
    margin-top: var(--lt-spacing-xs);
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.lt-form-help {
    color: var(--lt-gray);
    font-size: 0.875rem;
    margin-top: var(--lt-spacing-xs);
}

/* ============================================
   ALERTS & NOTIFICATIONS
   ============================================ */
.lt-alert {
    padding: var(--lt-spacing-md) var(--lt-spacing-lg);
    border-radius: var(--lt-radius-md);
    margin-bottom: var(--lt-spacing-md);
    display: flex;
    align-items: center;
    gap: var(--lt-spacing-md);
    border-left: 4px solid;
}

.lt-alert-success {
    background: var(--lt-success-light);
    border-color: var(--lt-success);
    color: #065f46;
}

.lt-alert-error {
    background: var(--lt-danger-light);
    border-color: var(--lt-danger);
    color: #991b1b;
}

.lt-alert-warning {
    background: var(--lt-warning-light);
    border-color: var(--lt-warning);
    color: #92400e;
}

.lt-alert-info {
    background: var(--lt-info-light);
    border-color: var(--lt-info);
    color: #1e40af;
}

/* Toast Notification Styles */
.lt-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: 9999;
    min-width: 300px;
    max-width: 400px;
    animation: slideInRight 0.3s ease;
}

@keyframes slideInRight {
    from {
        transform: translateX(100%);
        opacity: 0;
    }
    to {
        transform: translateX(0);
        opacity: 1;
    }
}

/* ============================================
   LOADING STATES
   ============================================ */
.lt-loading-overlay {
    position: absolute;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 10;
    border-radius: var(--lt-radius-xl);
}

.lt-spinner {
    width: 40px;
    height: 40px;
    border: 4px solid var(--lt-light-gray);
    border-top-color: var(--lt-primary);
    border-radius: 50%;
    animation: spin 0.8s linear infinite;
}

@keyframes spin {
    to { transform: rotate(360deg); }
}

.lt-skeleton {
    background: linear-gradient(90deg, var(--lt-light) 25%, var(--lt-light-gray) 50%, var(--lt-light) 75%);
    background-size: 200% 100%;
    animation: loading 1.5s ease-in-out infinite;
    border-radius: var(--lt-radius-md);
}

@keyframes loading {
    0% { background-position: 200% 0; }
    100% { background-position: -200% 0; }
}

/* ============================================
   BADGES & STATUS INDICATORS
   ============================================ */
.lt-badge {
    display: inline-flex;
    align-items: center;
    gap: 0.375rem;
    padding: 0.375rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.875rem;
    font-weight: 500;
}

.lt-badge-success {
    background: var(--lt-success-light);
    color: #065f46;
}

.lt-badge-warning {
    background: var(--lt-warning-light);
    color: #92400e;
}

.lt-badge-danger {
    background: var(--lt-danger-light);
    color: #991b1b;
}

.lt-badge-info {
    background: var(--lt-info-light);
    color: #1e40af;
}

.lt-badge-primary {
    background: rgba(1, 55, 119, 0.1);
    color: var(--lt-primary);
}

/* ============================================
   MOBILE RESPONSIVENESS
   ============================================ */
@media (max-width: 768px) {
    .lt-card {
        padding: var(--lt-spacing-md);
        border-radius: var(--lt-radius-lg);
        margin-bottom: var(--lt-spacing-md);
    }
    
    .lt-card-title {
        font-size: 1.25rem;
    }
    
    .btn-lt-primary,
    .btn-lt-secondary,
    .btn-lt-success,
    .btn-lt-danger {
        padding: 0.75rem 1.25rem;
        font-size: 0.9rem;
        min-height: 44px; /* Touch target size */
        width: 100%;
        justify-content: center;
        margin-bottom: var(--lt-spacing-sm);
    }
    
    .lt-form-control {
        padding: 0.875rem;
        font-size: 16px; /* Prevents zoom on iOS */
        min-height: 44px; /* Touch target size */
    }
    
    .lt-form-label {
        font-size: 0.9rem;
        margin-bottom: var(--lt-spacing-sm);
    }
    
    .lt-toast {
        left: 10px;
        right: 10px;
        max-width: none;
        top: 10px;
    }
    
    /* Stack action buttons on mobile */
    .action-buttons-card {
        display: flex;
        flex-direction: column;
        gap: var(--lt-spacing-sm);
    }
    
    .action-buttons-card .btn {
        width: 100%;
        margin: 0;
    }
}

@media (max-width: 480px) {
    .lt-card {
        padding: var(--lt-spacing-md);
    }
    
    .lt-card-title {
        font-size: 1.125rem;
    }
}

/* ============================================
   ACCESSIBILITY IMPROVEMENTS
   ============================================ */
.lt-sr-only {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border-width: 0;
}

/* Focus styles for keyboard navigation */
.lt-focus-visible:focus-visible,
button:focus-visible,
a:focus-visible,
input:focus-visible,
select:focus-visible,
textarea:focus-visible {
    outline: 3px solid var(--lt-primary);
    outline-offset: 2px;
}

/* High contrast mode support */
@media (prefers-contrast: high) {
    .lt-card {
        border: 2px solid var(--lt-dark);
    }
    
    .btn-lt-primary,
    .btn-lt-secondary,
    .btn-lt-success,
    .btn-lt-danger {
        border: 2px solid currentColor;
    }
}

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

/* ============================================
   UTILITY CLASSES
   ============================================ */
.lt-text-primary { color: var(--lt-primary); }
.lt-text-secondary { color: var(--lt-secondary); }
.lt-text-success { color: var(--lt-success); }
.lt-text-danger { color: var(--lt-danger); }
.lt-text-warning { color: var(--lt-warning); }
.lt-text-muted { color: var(--lt-gray); }

.lt-bg-primary { background-color: var(--lt-primary); }
.lt-bg-light { background-color: var(--lt-light); }

.lt-mt-sm { margin-top: var(--lt-spacing-sm); }
.lt-mt-md { margin-top: var(--lt-spacing-md); }
.lt-mt-lg { margin-top: var(--lt-spacing-lg); }
.lt-mb-sm { margin-bottom: var(--lt-spacing-sm); }
.lt-mb-md { margin-bottom: var(--lt-spacing-md); }
.lt-mb-lg { margin-bottom: var(--lt-spacing-lg); }