/**
 * Livora Frontend Component Library
 * Reusable UI components with consistent design system
 * Version: 5.0
 */

/* ========================================
   DESIGN TOKENS (Design System)
   ======================================== */
:root {
    /* Colors */
    --livora-primary: #667eea;
    --livora-primary-dark: #764ba2;
    --livora-primary-light: #f0f6ff;
    
    --livora-secondary: #f5576c;
    --livora-secondary-light: #fef0f2;
    
    --livora-accent: #4facfe;
    --livora-accent-light: #e7f3ff;
    
    --livora-success: #00a32a;
    --livora-success-light: #e7f5e7;
    
    --livora-warning: #f0b849;
    --livora-warning-light: #fef8e7;
    
    --livora-error: #d63638;
    --livora-error-light: #fcf0f1;
    
    --livora-gray-50: #f9f9f9;
    --livora-gray-100: #f0f0f0;
    --livora-gray-200: #e0e0e0;
    --livora-gray-300: #c0c0c0;
    --livora-gray-400: #999;
    --livora-gray-500: #666;
    --livora-gray-600: #333;
    --livora-gray-900: #1d2327;
    
    --livora-white: #ffffff;
    --livora-black: #000000;
    
    /* Typography */
    --livora-font-family: 'Tahoma', 'Arial', sans-serif;
    --livora-font-size-xs: 12px;
    --livora-font-size-sm: 14px;
    --livora-font-size-base: 16px;
    --livora-font-size-lg: 18px;
    --livora-font-size-xl: 20px;
    --livora-font-size-2xl: 24px;
    --livora-font-size-3xl: 30px;
    
    --livora-font-weight-normal: 400;
    --livora-font-weight-medium: 500;
    --livora-font-weight-semibold: 600;
    --livora-font-weight-bold: 700;
    
    /* Spacing */
    --livora-spacing-xs: 4px;
    --livora-spacing-sm: 8px;
    --livora-spacing-md: 16px;
    --livora-spacing-lg: 24px;
    --livora-spacing-xl: 32px;
    --livora-spacing-2xl: 48px;
    
    /* Border Radius */
    --livora-radius-sm: 4px;
    --livora-radius-md: 8px;
    --livora-radius-lg: 12px;
    --livora-radius-xl: 16px;
    --livora-radius-full: 9999px;
    
    /* Shadows */
    --livora-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --livora-shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
    --livora-shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);
    --livora-shadow-xl: 0 20px 25px rgba(0, 0, 0, 0.15);
    
    /* Transitions */
    --livora-transition-fast: 0.15s ease;
    --livora-transition-base: 0.3s ease;
    --livora-transition-slow: 0.5s ease;
    
    /* Z-Index */
    --livora-z-dropdown: 1000;
    --livora-z-sticky: 1020;
    --livora-z-fixed: 1030;
    --livora-z-modal-backdrop: 1040;
    --livora-z-modal: 1050;
    --livora-z-popover: 1060;
    --livora-z-tooltip: 1070;
}

/* RTL Support */
[dir="rtl"] {
    --livora-direction: rtl;
}

[dir="ltr"] {
    --livora-direction: ltr;
}

/* ========================================
   BUTTONS
   ======================================== */
.livora-btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: var(--livora-spacing-sm);
    padding: var(--livora-spacing-md) var(--livora-spacing-lg);
    font-family: var(--livora-font-family);
    font-size: var(--livora-font-size-base);
    font-weight: var(--livora-font-weight-medium);
    line-height: 1.5;
    text-align: center;
    text-decoration: none;
    border: 2px solid transparent;
    border-radius: var(--livora-radius-md);
    cursor: pointer;
    transition: all var(--livora-transition-base);
    user-select: none;
    white-space: nowrap;
    position: relative;
    overflow: hidden;
}

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

.livora-btn:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.3);
}

/* Button Variants */
.livora-btn-primary {
    background: linear-gradient(135deg, var(--livora-primary) 0%, var(--livora-primary-dark) 100%);
    color: var(--livora-white);
    border-color: transparent;
}

.livora-btn-primary:hover:not(:disabled) {
    transform: translateY(-2px);
    box-shadow: var(--livora-shadow-lg);
}

.livora-btn-secondary {
    background: var(--livora-white);
    color: var(--livora-primary);
    border-color: var(--livora-primary);
}

.livora-btn-secondary:hover:not(:disabled) {
    background: var(--livora-primary-light);
}

.livora-btn-success {
    background: var(--livora-success);
    color: var(--livora-white);
    border-color: transparent;
}

.livora-btn-success:hover:not(:disabled) {
    background: #008a00;
}

.livora-btn-danger {
    background: var(--livora-error);
    color: var(--livora-white);
    border-color: transparent;
}

.livora-btn-danger:hover:not(:disabled) {
    background: #b32d2e;
}

.livora-btn-outline {
    background: transparent;
    color: var(--livora-gray-600);
    border-color: var(--livora-gray-300);
}

.livora-btn-outline:hover:not(:disabled) {
    background: var(--livora-gray-50);
    border-color: var(--livora-gray-400);
}

.livora-btn-ghost {
    background: transparent;
    color: var(--livora-primary);
    border-color: transparent;
}

.livora-btn-ghost:hover:not(:disabled) {
    background: var(--livora-primary-light);
}

/* Button Sizes */
.livora-btn-sm {
    padding: var(--livora-spacing-sm) var(--livora-spacing-md);
    font-size: var(--livora-font-size-sm);
}

.livora-btn-lg {
    padding: var(--livora-spacing-lg) var(--livora-spacing-xl);
    font-size: var(--livora-font-size-lg);
}

.livora-btn-block {
    width: 100%;
    display: flex;
}

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

.livora-btn-loading::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 20px;
    height: 20px;
    margin: -10px 0 0 -10px;
    border: 2px solid currentColor;
    border-top-color: transparent;
    border-radius: var(--livora-radius-full);
    animation: livora-spin 0.6s linear infinite;
}

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

/* ========================================
   CARDS
   ======================================== */
.livora-card {
    background: var(--livora-white);
    border: 1px solid var(--livora-gray-200);
    border-radius: var(--livora-radius-lg);
    box-shadow: var(--livora-shadow-sm);
    overflow: hidden;
    transition: all var(--livora-transition-base);
}

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

.livora-card-header {
    padding: var(--livora-spacing-lg);
    border-bottom: 1px solid var(--livora-gray-200);
    background: var(--livora-gray-50);
}

.livora-card-title {
    margin: 0;
    font-size: var(--livora-font-size-xl);
    font-weight: var(--livora-font-weight-semibold);
    color: var(--livora-gray-900);
}

.livora-card-body {
    padding: var(--livora-spacing-lg);
}

.livora-card-footer {
    padding: var(--livora-spacing-lg);
    border-top: 1px solid var(--livora-gray-200);
    background: var(--livora-gray-50);
}

.livora-card-image {
    width: 100%;
    height: auto;
    display: block;
}

/* Card Variants */
.livora-card-gradient {
    background: linear-gradient(135deg, var(--livora-primary) 0%, var(--livora-primary-dark) 100%);
    color: var(--livora-white);
    border: none;
}

.livora-card-gradient .livora-card-title,
.livora-card-gradient .livora-card-body {
    color: var(--livora-white);
}

.livora-card-bordered {
    border-width: 2px;
    border-color: var(--livora-primary);
}

.livora-card-shadow-lg {
    box-shadow: var(--livora-shadow-lg);
}

.livora-card-shadow-lg:hover {
    box-shadow: var(--livora-shadow-xl);
}

/* ========================================
   MODALS
   ======================================== */
.livora-modal-backdrop {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.7);
    z-index: var(--livora-z-modal-backdrop);
    display: flex;
    align-items: center;
    justify-content: center;
    padding: var(--livora-spacing-lg);
    animation: livora-fade-in var(--livora-transition-base);
}

.livora-modal {
    background: var(--livora-white);
    border-radius: var(--livora-radius-lg);
    box-shadow: var(--livora-shadow-xl);
    max-width: 600px;
    width: 100%;
    max-height: 90vh;
    overflow-y: auto;
    z-index: var(--livora-z-modal);
    animation: livora-slide-up var(--livora-transition-base);
    position: relative;
}

.livora-modal-sm {
    max-width: 400px;
}

.livora-modal-lg {
    max-width: 900px;
}

.livora-modal-xl {
    max-width: 1200px;
}

.livora-modal-header {
    padding: var(--livora-spacing-lg);
    border-bottom: 1px solid var(--livora-gray-200);
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.livora-modal-title {
    margin: 0;
    font-size: var(--livora-font-size-xl);
    font-weight: var(--livora-font-weight-semibold);
}

.livora-modal-close {
    background: none;
    border: none;
    font-size: 24px;
    color: var(--livora-gray-500);
    cursor: pointer;
    padding: 0;
    width: 32px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--livora-radius-sm);
    transition: all var(--livora-transition-fast);
}

.livora-modal-close:hover {
    background: var(--livora-gray-100);
    color: var(--livora-gray-900);
}

.livora-modal-body {
    padding: var(--livora-spacing-lg);
}

.livora-modal-footer {
    padding: var(--livora-spacing-lg);
    border-top: 1px solid var(--livora-gray-200);
    display: flex;
    gap: var(--livora-spacing-md);
    justify-content: flex-end;
}

@keyframes livora-fade-in {
    from { opacity: 0; }
    to { opacity: 1; }
}

@keyframes livora-slide-up {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ========================================
   LOADING STATES
   ======================================== */
.livora-spinner {
    display: inline-block;
    width: 40px;
    height: 40px;
    border: 4px solid var(--livora-gray-200);
    border-top-color: var(--livora-primary);
    border-radius: var(--livora-radius-full);
    animation: livora-spin 0.8s linear infinite;
}

.livora-spinner-sm {
    width: 20px;
    height: 20px;
    border-width: 2px;
}

.livora-spinner-lg {
    width: 60px;
    height: 60px;
    border-width: 6px;
}

.livora-spinner-overlay {
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(255, 255, 255, 0.9);
    z-index: var(--livora-z-modal);
    display: flex;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: var(--livora-spacing-lg);
}

.livora-spinner-overlay-text {
    color: var(--livora-gray-600);
    font-size: var(--livora-font-size-lg);
}

/* Skeleton Screens */
.livora-skeleton {
    background: linear-gradient(
        90deg,
        var(--livora-gray-100) 0%,
        var(--livora-gray-200) 50%,
        var(--livora-gray-100) 100%
    );
    background-size: 200% 100%;
    animation: livora-skeleton-loading 1.5s ease-in-out infinite;
    border-radius: var(--livora-radius-sm);
}

.livora-skeleton-text {
    height: 16px;
    margin-bottom: var(--livora-spacing-sm);
}

.livora-skeleton-title {
    height: 24px;
    width: 60%;
    margin-bottom: var(--livora-spacing-md);
}

.livora-skeleton-image {
    width: 100%;
    height: 200px;
    border-radius: var(--livora-radius-md);
}

.livora-skeleton-avatar {
    width: 50px;
    height: 50px;
    border-radius: var(--livora-radius-full);
}

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

/* ========================================
   ALERTS & NOTIFICATIONS
   ======================================== */
.livora-alert {
    padding: var(--livora-spacing-lg);
    border-radius: var(--livora-radius-md);
    border-right: 4px solid;
    margin-bottom: var(--livora-spacing-md);
    display: flex;
    align-items: flex-start;
    gap: var(--livora-spacing-md);
    animation: livora-slide-in var(--livora-transition-base);
}

.livora-alert-icon {
    font-size: 24px;
    flex-shrink: 0;
}

.livora-alert-content {
    flex: 1;
}

.livora-alert-title {
    margin: 0 0 var(--livora-spacing-xs) 0;
    font-size: var(--livora-font-size-lg);
    font-weight: var(--livora-font-weight-semibold);
}

.livora-alert-message {
    margin: 0;
    font-size: var(--livora-font-size-base);
    line-height: 1.6;
}

.livora-alert-close {
    background: none;
    border: none;
    font-size: 20px;
    color: inherit;
    opacity: 0.7;
    cursor: pointer;
    padding: 0;
    width: 24px;
    height: 24px;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}

.livora-alert-close:hover {
    opacity: 1;
}

/* Alert Variants */
.livora-alert-success {
    background: var(--livora-success-light);
    border-color: var(--livora-success);
    color: #155724;
}

.livora-alert-warning {
    background: var(--livora-warning-light);
    border-color: var(--livora-warning);
    color: #856404;
}

.livora-alert-error {
    background: var(--livora-error-light);
    border-color: var(--livora-error);
    color: #721c24;
}

.livora-alert-info {
    background: var(--livora-accent-light);
    border-color: var(--livora-accent);
    color: #0c4a6e;
}

@keyframes livora-slide-in {
    from {
        opacity: 0;
        transform: translateX(-20px);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

/* Toast Notifications */
.livora-toast {
    position: fixed;
    top: 20px;
    right: 20px;
    z-index: var(--livora-z-popover);
    min-width: 300px;
    max-width: 500px;
    animation: livora-toast-slide-in var(--livora-transition-base);
}

[dir="rtl"] .livora-toast {
    right: auto;
    left: 20px;
}

@keyframes livora-toast-slide-in {
    from {
        opacity: 0;
        transform: translateX(100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

[dir="rtl"] .livora-toast {
    animation: livora-toast-slide-in-rtl var(--livora-transition-base);
}

@keyframes livora-toast-slide-in-rtl {
    from {
        opacity: 0;
        transform: translateX(-100%);
    }
    to {
        opacity: 1;
        transform: translateX(0);
    }
}

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

.livora-label {
    display: block;
    margin-bottom: var(--livora-spacing-sm);
    font-weight: var(--livora-font-weight-medium);
    color: var(--livora-gray-900);
    font-size: var(--livora-font-size-base);
}

.livora-input,
.livora-select,
.livora-textarea {
    width: 100%;
    padding: var(--livora-spacing-md);
    font-family: var(--livora-font-family);
    font-size: var(--livora-font-size-base);
    border: 1px solid var(--livora-gray-300);
    border-radius: var(--livora-radius-md);
    background: var(--livora-white);
    color: var(--livora-gray-900);
    transition: all var(--livora-transition-fast);
}

.livora-input:focus,
.livora-select:focus,
.livora-textarea:focus {
    outline: none;
    border-color: var(--livora-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

.livora-input:disabled,
.livora-select:disabled,
.livora-textarea:disabled {
    background: var(--livora-gray-100);
    cursor: not-allowed;
    opacity: 0.6;
}

.livora-textarea {
    resize: vertical;
    min-height: 100px;
}

.livora-input-error {
    border-color: var(--livora-error);
}

.livora-input-error:focus {
    box-shadow: 0 0 0 3px rgba(214, 54, 56, 0.1);
}

.livora-error-message {
    margin-top: var(--livora-spacing-xs);
    font-size: var(--livora-font-size-sm);
    color: var(--livora-error);
    display: flex;
    align-items: center;
    gap: var(--livora-spacing-xs);
}

.livora-help-text {
    margin-top: var(--livora-spacing-xs);
    font-size: var(--livora-font-size-sm);
    color: var(--livora-gray-500);
}

/* ========================================
   BADGES
   ======================================== */
.livora-badge {
    display: inline-flex;
    align-items: center;
    padding: var(--livora-spacing-xs) var(--livora-spacing-sm);
    font-size: var(--livora-font-size-xs);
    font-weight: var(--livora-font-weight-medium);
    line-height: 1;
    border-radius: var(--livora-radius-full);
    white-space: nowrap;
}

.livora-badge-primary {
    background: var(--livora-primary);
    color: var(--livora-white);
}

.livora-badge-success {
    background: var(--livora-success);
    color: var(--livora-white);
}

.livora-badge-warning {
    background: var(--livora-warning);
    color: var(--livora-white);
}

.livora-badge-error {
    background: var(--livora-error);
    color: var(--livora-white);
}

.livora-badge-outline {
    background: transparent;
    border: 1px solid currentColor;
}

/* ========================================
   MOBILE OPTIMIZATION
   ======================================== */
@media (max-width: 768px) {
    .livora-modal {
        max-width: 95%;
        margin: var(--livora-spacing-md);
    }
    
    .livora-btn {
        width: 100%;
        justify-content: center;
    }
    
    .livora-card {
        margin-bottom: var(--livora-spacing-md);
    }
    
    .livora-toast {
        min-width: auto;
        max-width: calc(100% - 40px);
        right: 20px;
        left: 20px;
    }
    
    [dir="rtl"] .livora-toast {
        right: 20px;
        left: 20px;
    }
}

/* Touch-friendly interactions */
@media (hover: none) and (pointer: coarse) {
    .livora-btn {
        min-height: 44px;
        min-width: 44px;
    }
    
    .livora-modal-close {
        min-width: 44px;
        min-height: 44px;
    }
    
    .livora-card {
        touch-action: pan-y;
    }
}

/* Touch feedback */
.livora-touching {
    transform: scale(0.95);
    opacity: 0.8;
    transition: transform 0.1s ease, opacity 0.1s ease;
}

/* Viewport height fix for mobile */
.livora-mobile-viewport {
    height: calc(var(--vh, 1vh) * 100);
}

/* Safe area insets for iOS */
@supports (padding: max(0px)) {
    .livora-safe-area-top {
        padding-top: max(20px, env(safe-area-inset-top));
    }
    
    .livora-safe-area-bottom {
        padding-bottom: max(20px, env(safe-area-inset-bottom));
    }
    
    .livora-safe-area-left {
        padding-left: max(20px, env(safe-area-inset-left));
    }
    
    .livora-safe-area-right {
        padding-right: max(20px, env(safe-area-inset-right));
    }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */
.livora-fade-in {
    animation: livora-fade-in var(--livora-transition-base);
}

.livora-slide-up {
    animation: livora-slide-up var(--livora-transition-base);
}

.livora-text-center {
    text-align: center;
}

.livora-text-right {
    text-align: right;
}

.livora-mb-0 { margin-bottom: 0; }
.livora-mb-sm { margin-bottom: var(--livora-spacing-sm); }
.livora-mb-md { margin-bottom: var(--livora-spacing-md); }
.livora-mb-lg { margin-bottom: var(--livora-spacing-lg); }

.livora-mt-0 { margin-top: 0; }
.livora-mt-sm { margin-top: var(--livora-spacing-sm); }
.livora-mt-md { margin-top: var(--livora-spacing-md); }
.livora-mt-lg { margin-top: var(--livora-spacing-lg); }

.livora-hidden {
    display: none !important;
}

.livora-visible {
    display: block !important;
}