/**
 * LegalKit Frontend Styles
 * 
 * Production-ready, accessible, responsive policy display
 * Version: 2.0.0
 */

/* ============================================
   CSS Custom Properties (Design Tokens)
   ============================================ */
:root {
    /* Typography */
    --lk-font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Oxygen, Ubuntu, sans-serif;
    --lk-font-size-base: 16px;
    --lk-font-size-sm: 14px;
    --lk-font-size-xs: 13px;
    --lk-font-size-lg: 18px;
    --lk-font-size-xl: 22px;
    --lk-font-size-2xl: 28px;
    --lk-line-height: 1.7;
    --lk-font-weight-normal: 400;
    --lk-font-weight-medium: 500;
    --lk-font-weight-semibold: 600;
    --lk-font-weight-bold: 700;

    /* Colors - Light Theme */
    --lk-color-text: #374151;
    --lk-color-text-muted: #6B7280;
    --lk-color-heading: #111827;
    --lk-color-link: #2563EB;
    --lk-color-link-hover: #1D4ED8;
    --lk-color-border: #E5E7EB;
    --lk-color-border-strong: #D1D5DB;
    --lk-color-bg: #F9FAFB;
    --lk-color-bg-elevated: #FFFFFF;
    --lk-color-primary: #10B981;
    --lk-color-primary-hover: #059669;
    --lk-color-success: #10B981;
    --lk-color-focus: #3B82F6;

    /* Spacing */
    --lk-spacing-xs: 8px;
    --lk-spacing-sm: 12px;
    --lk-spacing-md: 16px;
    --lk-spacing-lg: 24px;
    --lk-spacing-xl: 32px;
    --lk-spacing-2xl: 48px;

    /* Border Radius */
    --lk-radius-sm: 6px;
    --lk-radius-md: 8px;
    --lk-radius-lg: 12px;
    --lk-radius-full: 9999px;

    /* Shadows */
    --lk-shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
    --lk-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --lk-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);

    /* Transitions */
    --lk-transition-fast: 150ms ease;
    --lk-transition-normal: 200ms ease;
    --lk-transition-slow: 300ms ease;

    /* Layout */
    --lk-max-width: 800px;
}

/* ============================================
   Dark Mode Variables
   ============================================ */
.legalkit-policy--auto-dark {
    /* Auto-detect system preference */
}

@media (prefers-color-scheme: dark) {
    .legalkit-policy--auto-dark {
        --lk-color-text: #D1D5DB;
        --lk-color-text-muted: #9CA3AF;
        --lk-color-heading: #F9FAFB;
        --lk-color-link: #60A5FA;
        --lk-color-link-hover: #93C5FD;
        --lk-color-border: #374151;
        --lk-color-border-strong: #4B5563;
        --lk-color-bg: #1F2937;
        --lk-color-bg-elevated: #111827;
    }
}

.legalkit-policy--dark {
    --lk-color-text: #D1D5DB;
    --lk-color-text-muted: #9CA3AF;
    --lk-color-heading: #F9FAFB;
    --lk-color-link: #60A5FA;
    --lk-color-link-hover: #93C5FD;
    --lk-color-border: #374151;
    --lk-color-border-strong: #4B5563;
    --lk-color-bg: #1F2937;
    --lk-color-bg-elevated: #111827;
}

/* ============================================
   Base Policy Container
   ============================================ */
.legalkit-policy {
    font-family: var(--lk-font-family);
    font-size: var(--lk-font-size-base);
    line-height: var(--lk-line-height);
    color: var(--lk-color-text);
    max-width: var(--lk-max-width);
    margin: 0 auto;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
}

/* Style Variants */
.legalkit-policy--default {
    background: var(--lk-color-bg-elevated);
    border: 1px solid var(--lk-color-border);
    border-radius: var(--lk-radius-lg);
    padding: var(--lk-spacing-lg);
}

.legalkit-policy--card {
    background: var(--lk-color-bg-elevated);
    border-radius: var(--lk-radius-lg);
    padding: var(--lk-spacing-xl);
    box-shadow: var(--lk-shadow-lg);
}

.legalkit-policy--minimal {
    background: transparent;
    border: none;
    padding: 0;
}

.legalkit-policy--custom {
    /* No default styling - user provides CSS */
}

/* ============================================
   Header
   ============================================ */
.legalkit-policy__header {
    display: flex;
    flex-wrap: wrap;
    align-items: flex-start;
    justify-content: space-between;
    gap: var(--lk-spacing-md);
    margin-bottom: var(--lk-spacing-lg);
    padding-bottom: var(--lk-spacing-lg);
    border-bottom: 1px solid var(--lk-color-border);
}

.legalkit-policy__title-group {
    flex: 1;
    min-width: 200px;
}

.legalkit-policy__title {
    font-size: var(--lk-font-size-2xl);
    font-weight: var(--lk-font-weight-bold);
    color: var(--lk-color-heading);
    margin: 0 0 var(--lk-spacing-xs) 0;
    line-height: 1.3;
}

.legalkit-policy__updated {
    font-size: var(--lk-font-size-sm);
    color: var(--lk-color-text-muted);
    margin: 0;
}

.legalkit-policy__updated-label {
    font-weight: var(--lk-font-weight-medium);
}

.legalkit-policy__updated time {
    font-weight: var(--lk-font-weight-normal);
}

.legalkit-policy__laws {
    font-size: var(--lk-font-size-sm);
    color: var(--lk-color-text-muted);
    margin-top: var(--lk-spacing-xs);
}

.legalkit-policy__laws-label {
    font-weight: var(--lk-font-weight-medium);
}

/* ============================================
   Action Buttons (Print, Copy)
   ============================================ */
.legalkit-policy__actions {
    display: flex;
    gap: var(--lk-spacing-xs);
    flex-shrink: 0;
}

.legalkit-policy__action {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: var(--lk-spacing-xs) var(--lk-spacing-md);
    background: var(--lk-color-bg);
    border: 1px solid var(--lk-color-border);
    border-radius: var(--lk-radius-sm);
    font-family: inherit;
    font-size: var(--lk-font-size-sm);
    font-weight: var(--lk-font-weight-medium);
    color: var(--lk-color-text);
    cursor: pointer;
    transition: all var(--lk-transition-fast);
    white-space: nowrap;
}

.legalkit-policy__action:hover {
    background: var(--lk-color-bg-elevated);
    border-color: var(--lk-color-border-strong);
}

.legalkit-policy__action:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
    border-color: var(--lk-color-focus);
}

.legalkit-policy__action:active {
    transform: translateY(1px);
}

/* Copy button success state */
.legalkit-policy__copy--success {
    background: var(--lk-color-success) !important;
    border-color: var(--lk-color-success) !important;
    color: white !important;
}

.legalkit-icon {
    flex-shrink: 0;
}

.legalkit-policy__action-text {
    display: inline;
}

/* ============================================
   Content Area
   ============================================ */
.legalkit-policy__content {
    color: var(--lk-color-text);
}

/* Headings in content */
.legalkit-policy__content h1,
.legalkit-policy__content h2,
.legalkit-policy__content h3,
.legalkit-policy__content h4,
.legalkit-policy__content h5,
.legalkit-policy__content h6 {
    color: var(--lk-color-heading);
    font-weight: var(--lk-font-weight-semibold);
    margin-top: 1.75em;
    margin-bottom: 0.75em;
    line-height: 1.4;
}

.legalkit-policy__content h1:first-child,
.legalkit-policy__content h2:first-child,
.legalkit-policy__content h3:first-child {
    margin-top: 0;
}

.legalkit-policy__content h2 {
    font-size: var(--lk-font-size-xl);
    padding-bottom: var(--lk-spacing-xs);
    border-bottom: 1px solid var(--lk-color-border);
}

.legalkit-policy__content h3 {
    font-size: var(--lk-font-size-lg);
}

.legalkit-policy__content h4 {
    font-size: var(--lk-font-size-base);
}

/* Paragraphs */
.legalkit-policy__content p {
    margin-bottom: 1em;
}

.legalkit-policy__content p:last-child {
    margin-bottom: 0;
}

/* Links */
.legalkit-policy__content a {
    color: var(--lk-color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
    text-decoration-thickness: 1px;
    transition: color var(--lk-transition-fast);
}

.legalkit-policy__content a:hover {
    color: var(--lk-color-link-hover);
}

.legalkit-policy__content a:focus {
    outline: 2px solid var(--lk-color-focus);
    outline-offset: 2px;
}

/* Lists */
.legalkit-policy__content ul,
.legalkit-policy__content ol {
    margin: 1em 0;
    padding-left: 1.75em;
}

.legalkit-policy__content li {
    margin-bottom: 0.5em;
}

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

/* Nested lists */
.legalkit-policy__content ul ul,
.legalkit-policy__content ol ol,
.legalkit-policy__content ul ol,
.legalkit-policy__content ol ul {
    margin: 0.5em 0;
}

/* Tables */
.legalkit-policy__content table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.5em 0;
    font-size: var(--lk-font-size-sm);
}

.legalkit-policy__content th,
.legalkit-policy__content td {
    padding: var(--lk-spacing-sm);
    text-align: left;
    border: 1px solid var(--lk-color-border);
}

.legalkit-policy__content th {
    background: var(--lk-color-bg);
    font-weight: var(--lk-font-weight-semibold);
    color: var(--lk-color-heading);
}

/* Blockquotes */
.legalkit-policy__content blockquote {
    margin: 1.5em 0;
    padding: var(--lk-spacing-md) var(--lk-spacing-lg);
    background: var(--lk-color-bg);
    border-left: 4px solid var(--lk-color-primary);
    border-radius: 0 var(--lk-radius-md) var(--lk-radius-md) 0;
}

.legalkit-policy__content blockquote p:last-child {
    margin-bottom: 0;
}

/* Emphasis */
.legalkit-policy__content strong,
.legalkit-policy__content b {
    font-weight: var(--lk-font-weight-semibold);
    color: var(--lk-color-heading);
}

/* Code */
.legalkit-policy__content code {
    background: var(--lk-color-bg);
    padding: 2px 6px;
    border-radius: var(--lk-radius-sm);
    font-size: 0.9em;
    font-family: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

/* Horizontal rules */
.legalkit-policy__content hr {
    border: none;
    border-top: 1px solid var(--lk-color-border);
    margin: var(--lk-spacing-xl) 0;
}

/* ============================================
   Footer
   ============================================ */
.legalkit-policy__footer {
    margin-top: var(--lk-spacing-lg);
    padding-top: var(--lk-spacing-lg);
    border-top: 1px solid var(--lk-color-border);
}

.legalkit-policy__credit {
    font-size: var(--lk-font-size-xs);
    color: var(--lk-color-text-muted);
    margin: 0;
}

.legalkit-policy__credit a {
    color: var(--lk-color-primary);
    text-decoration: none;
    font-weight: var(--lk-font-weight-medium);
    transition: color var(--lk-transition-fast);
}

.legalkit-policy__credit a:hover {
    color: var(--lk-color-primary-hover);
    text-decoration: underline;
}

/* ============================================
   Empty State
   ============================================ */
.legalkit-policy--empty {
    text-align: center;
    padding: var(--lk-spacing-2xl) var(--lk-spacing-lg);
    background: var(--lk-color-bg);
    border-radius: var(--lk-radius-lg);
}

.legalkit-policy--empty p {
    color: var(--lk-color-text-muted);
    margin: 0 0 var(--lk-spacing-md) 0;
}

.legalkit-policy--empty a {
    color: var(--lk-color-primary);
    font-weight: var(--lk-font-weight-medium);
}

/* ============================================
   Loading State
   ============================================ */
.legalkit-loading {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: var(--lk-spacing-2xl) var(--lk-spacing-lg);
    color: var(--lk-color-text-muted);
}

.legalkit-spinner {
    width: 32px;
    height: 32px;
    border: 3px solid var(--lk-color-border);
    border-top-color: var(--lk-color-primary);
    border-radius: 50%;
    animation: legalkit-spin 0.8s linear infinite;
    margin-bottom: var(--lk-spacing-sm);
}

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

/* Screen reader only text */
.screen-reader-text {
    position: absolute;
    width: 1px;
    height: 1px;
    padding: 0;
    margin: -1px;
    overflow: hidden;
    clip: rect(0, 0, 0, 0);
    white-space: nowrap;
    border: 0;
}

/* ============================================
   Policy Links (Widget/Block)
   ============================================ */
.legalkit-links {
    font-size: var(--lk-font-size-sm);
}

.legalkit-links--horizontal {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 4px;
}

.legalkit-links__item {
    display: inline-flex;
    align-items: center;
}

.legalkit-links__separator {
    color: var(--lk-color-border-strong);
    margin: 0 var(--lk-spacing-xs);
    user-select: none;
}

.legalkit-links--vertical {
    list-style: none;
    padding: 0;
    margin: 0;
}

.legalkit-links--vertical .legalkit-links__item {
    display: block;
    margin-bottom: var(--lk-spacing-xs);
}

.legalkit-links--vertical .legalkit-links__item:last-child {
    margin-bottom: 0;
}

.legalkit-link {
    color: var(--lk-color-link);
    text-decoration: underline;
    text-underline-offset: 2px;
    transition: color var(--lk-transition-fast);
}

.legalkit-link:hover {
    color: var(--lk-color-link-hover);
}

.legalkit-link:focus {
    outline: 2px solid var(--lk-color-focus);
    outline-offset: 2px;
}

/* Links Widget */
.legalkit-links-widget {
    list-style: none;
    padding: 0;
    margin: 0;
}

.legalkit-links-widget li {
    margin-bottom: var(--lk-spacing-xs);
}

.legalkit-links-widget a {
    color: inherit;
    text-decoration: none;
    transition: color var(--lk-transition-fast);
}

.legalkit-links-widget a:hover {
    color: var(--lk-color-primary);
}

/* ============================================
   Modal
   ============================================ */
.legalkit-modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(4px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    visibility: hidden;
    transition: all var(--lk-transition-normal);
}

.legalkit-modal-overlay.active {
    opacity: 1;
    visibility: visible;
}

.legalkit-modal {
    background: var(--lk-color-bg-elevated);
    border-radius: var(--lk-radius-lg);
    max-width: var(--lk-max-width);
    max-height: 90vh;
    width: 90%;
    overflow: hidden;
    transform: scale(0.95) translateY(10px);
    transition: transform var(--lk-transition-normal);
    box-shadow: var(--lk-shadow-lg);
}

.legalkit-modal-overlay.active .legalkit-modal {
    transform: scale(1) translateY(0);
}

.legalkit-modal__header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--lk-spacing-md) var(--lk-spacing-lg);
    border-bottom: 1px solid var(--lk-color-border);
    background: var(--lk-color-bg);
}

.legalkit-modal__title {
    margin: 0;
    font-size: var(--lk-font-size-lg);
    font-weight: var(--lk-font-weight-semibold);
    color: var(--lk-color-heading);
}

.legalkit-modal__close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 32px;
    height: 32px;
    background: transparent;
    border: none;
    border-radius: var(--lk-radius-sm);
    font-size: 24px;
    cursor: pointer;
    color: var(--lk-color-text-muted);
    transition: all var(--lk-transition-fast);
}

.legalkit-modal__close:hover {
    background: var(--lk-color-bg-elevated);
    color: var(--lk-color-text);
}

.legalkit-modal__close:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.3);
}

.legalkit-modal__body {
    padding: var(--lk-spacing-lg);
    overflow-y: auto;
    max-height: calc(90vh - 80px);
}

/* ============================================
   Consent Banner
   ============================================ */
.legalkit-consent-banner {
    position: fixed;
    bottom: var(--lk-spacing-lg);
    right: var(--lk-spacing-lg);
    max-width: 420px;
    width: calc(100% - 48px);
    background: #111827;
    color: #F9FAFB;
    padding: var(--lk-spacing-lg);
    border-radius: var(--lk-radius-lg);
    box-shadow: 0 25px 50px -12px rgba(0, 0, 0, 0.5);
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: var(--lk-spacing-md);
}

.legalkit-consent-banner__message {
    font-size: var(--lk-font-size-sm);
    line-height: 1.6;
}

.legalkit-consent-banner__message a {
    color: #34D399;
    text-decoration: underline;
}

.legalkit-consent-banner__actions {
    display: flex;
    flex-wrap: wrap;
    gap: var(--lk-spacing-sm);
    align-items: center;
}

.legalkit-consent-banner__button {
    border: none;
    border-radius: var(--lk-radius-full);
    padding: var(--lk-spacing-xs) var(--lk-spacing-lg);
    font-family: inherit;
    font-size: var(--lk-font-size-sm);
    font-weight: var(--lk-font-weight-semibold);
    cursor: pointer;
    transition: opacity var(--lk-transition-fast);
    background: rgba(255, 255, 255, 0.1);
    color: #F9FAFB;
}

.legalkit-consent-banner__button--primary {
    background: #10B981;
    color: #0F172A;
}

.legalkit-consent-banner__button:hover {
    opacity: 0.85;
}

.legalkit-consent-banner__button:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(16, 185, 129, 0.4);
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .legalkit-policy {
        max-width: none;
        padding: 0;
        border: none;
        box-shadow: none;
        background: white;
        color: black;
    }
    
    .legalkit-policy__actions,
    .legalkit-policy__footer {
        display: none !important;
    }
    
    .legalkit-policy__header {
        border-bottom-color: #ccc;
    }
    
    .legalkit-policy__content {
        font-size: 11pt;
    }
    
    .legalkit-policy__content h2 {
        border-bottom-color: #ccc;
    }
    
    .legalkit-policy__content a {
        color: black;
        text-decoration: underline;
    }
    
    .legalkit-policy__content a[href]::after {
        content: " (" attr(href) ")";
        font-size: 0.8em;
        color: #666;
    }
}

/* ============================================
   Responsive Design
   ============================================ */
@media (max-width: 768px) {
    .legalkit-policy {
        font-size: 15px;
    }
    
    .legalkit-policy--default,
    .legalkit-policy--card {
        padding: var(--lk-spacing-md);
        border-radius: var(--lk-radius-md);
    }
    
    .legalkit-policy__header {
        flex-direction: column;
        align-items: stretch;
    }
    
    .legalkit-policy__title-group {
        min-width: 100%;
    }
    
    .legalkit-policy__title {
        font-size: var(--lk-font-size-xl);
    }
    
    .legalkit-policy__actions {
        width: 100%;
    }
    
    .legalkit-policy__action {
        flex: 1;
        justify-content: center;
    }
    
    .legalkit-policy__content h2 {
        font-size: var(--lk-font-size-lg);
    }
    
    .legalkit-policy__content table {
        display: block;
        overflow-x: auto;
        -webkit-overflow-scrolling: touch;
    }
}

@media (max-width: 480px) {
    .legalkit-policy--default,
    .legalkit-policy--card {
        padding: var(--lk-spacing-sm);
    }
    
    .legalkit-policy__action-text {
        display: none;
    }
    
    .legalkit-policy__action {
        padding: var(--lk-spacing-xs) var(--lk-spacing-sm);
    }
    
    .legalkit-consent-banner {
        right: var(--lk-spacing-sm);
        left: var(--lk-spacing-sm);
        bottom: var(--lk-spacing-sm);
        width: auto;
        max-width: none;
    }
    
    .legalkit-consent-banner__actions {
        flex-direction: column;
        align-items: stretch;
    }
}

/* ============================================
   Reduced Motion
   ============================================ */
@media (prefers-reduced-motion: reduce) {
    .legalkit-spinner {
        animation: none;
    }
    
    .legalkit-modal-overlay,
    .legalkit-modal,
    .legalkit-policy__action,
    .legalkit-consent-banner__button {
        transition: none;
    }
}

/* ============================================
   High Contrast Mode
   ============================================ */
@media (forced-colors: active) {
    .legalkit-policy {
        border: 2px solid CanvasText;
    }
    
    .legalkit-policy__action {
        border: 2px solid CanvasText;
    }
}