/**
 * PayStation Interactive Documentation Styles
 * Global styles for documentation pages
 *
 * @version 1.0.0
 */

/* ============================================
   CSS Variables
   ============================================ */
:root {
    --doc-primary: #667eea;
    --doc-primary-dark: #5a67d8;
    --doc-secondary: #764ba2;
    --doc-success: #10b981;
    --doc-warning: #f59e0b;
    --doc-danger: #ef4444;
    --doc-info: #3b82f6;

    --doc-bg: #f8fafc;
    --doc-bg-dark: #1a1a2e;
    --doc-surface: #ffffff;
    --doc-surface-dark: #16213e;

    --doc-text: #374151;
    --doc-text-muted: #6b7280;
    --doc-text-light: #9ca3af;

    --doc-border: #e5e7eb;
    --doc-border-dark: #374151;

    --doc-radius-sm: 6px;
    --doc-radius: 12px;
    --doc-radius-lg: 16px;
    --doc-radius-xl: 24px;

    --doc-shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
    --doc-shadow: 0 1px 3px 0 rgba(0, 0, 0, 0.1), 0 1px 2px 0 rgba(0, 0, 0, 0.06);
    --doc-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.1), 0 2px 4px -1px rgba(0, 0, 0, 0.06);
    --doc-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -2px rgba(0, 0, 0, 0.05);
    --doc-shadow-xl: 0 20px 25px -5px rgba(0, 0, 0, 0.1), 0 10px 10px -5px rgba(0, 0, 0, 0.04);

    --doc-transition: all 0.2s ease;
    --doc-font: 'Segoe UI', -apple-system, BlinkMacSystemFont, 'Roboto', 'Oxygen', 'Ubuntu', sans-serif;
    --doc-font-mono: 'Fira Code', 'Monaco', 'Consolas', monospace;
}

/* ============================================
   Base Styles
   ============================================ */
.doc-page {
    font-family: var(--doc-font);
    background: var(--doc-bg);
    min-height: 100vh;
    color: var(--doc-text);
    line-height: 1.6;
}

.doc-container {
    max-width: 1400px;
    margin: 0 auto;
    padding: 0 1.5rem;
}

/* ============================================
   Layout
   ============================================ */
.doc-layout {
    display: grid;
    grid-template-columns: 280px 1fr;
    gap: 2rem;
    min-height: 100vh;
}

@media (max-width: 1024px) {
    .doc-layout {
        grid-template-columns: 1fr;
    }
}

/* ============================================
   Sidebar
   ============================================ */
.doc-sidebar {
    position: sticky;
    top: 0;
    height: 100vh;
    overflow-y: auto;
    padding: 2rem 0;
    background: var(--doc-surface);
    border-right: 1px solid var(--doc-border);
}

.doc-sidebar-header {
    padding: 0 1.5rem 1.5rem;
    border-bottom: 1px solid var(--doc-border);
    margin-bottom: 1rem;
}

.doc-sidebar-logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    text-decoration: none;
    color: var(--doc-text);
}

.doc-sidebar-logo img {
    width: 40px;
    height: 40px;
}

.doc-sidebar-logo span {
    font-weight: 700;
    font-size: 1.125rem;
}

.doc-sidebar-search {
    padding: 0.75rem 1rem;
    border: 2px solid var(--doc-border);
    border-radius: var(--doc-radius);
    width: 100%;
    font-size: 0.875rem;
    transition: var(--doc-transition);
    margin: 1rem 1.5rem 0;
    box-sizing: border-box;
    width: calc(100% - 3rem);
}

.doc-sidebar-search:focus {
    outline: none;
    border-color: var(--doc-primary);
    box-shadow: 0 0 0 3px rgba(102, 126, 234, 0.1);
}

/* Navigation */
.doc-nav {
    padding: 1rem 0;
}

.doc-nav-section {
    margin-bottom: 0.5rem;
}

.doc-nav-title {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.75rem 1.5rem;
    font-weight: 600;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--doc-text-muted);
    cursor: pointer;
    transition: var(--doc-transition);
}

.doc-nav-title:hover {
    color: var(--doc-text);
}

.doc-nav-title svg {
    width: 16px;
    height: 16px;
    transition: transform 0.3s ease;
}

.doc-nav-title.collapsed svg {
    transform: rotate(-90deg);
}

.doc-nav-items {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-nav-item {
    margin: 0;
}

.doc-nav-link {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding: 0.625rem 1.5rem 0.625rem 2rem;
    color: var(--doc-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    transition: var(--doc-transition);
    border-left: 3px solid transparent;
}

.doc-nav-link:hover {
    color: var(--doc-text);
    background: rgba(102, 126, 234, 0.05);
}

.doc-nav-link.active {
    color: var(--doc-primary);
    background: rgba(102, 126, 234, 0.1);
    border-left-color: var(--doc-primary);
    font-weight: 500;
}

.doc-nav-icon {
    width: 18px;
    height: 18px;
    opacity: 0.7;
}

.doc-nav-badge {
    margin-left: auto;
    background: var(--doc-primary);
    color: white;
    font-size: 0.625rem;
    padding: 0.125rem 0.5rem;
    border-radius: 9999px;
    font-weight: 600;
}

/* Nested navigation */
.doc-nav-nested {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-nav-nested .doc-nav-link {
    padding-left: 3rem;
    font-size: 0.8125rem;
}

/* ============================================
   Main Content
   ============================================ */
.doc-main {
    padding: 2rem 0;
    max-width: 900px;
}

.doc-breadcrumb {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1.5rem;
    font-size: 0.875rem;
}

.doc-breadcrumb a {
    color: var(--doc-text-muted);
    text-decoration: none;
    transition: var(--doc-transition);
}

.doc-breadcrumb a:hover {
    color: var(--doc-primary);
}

.doc-breadcrumb span {
    color: var(--doc-text-light);
}

/* Header */
.doc-header {
    margin-bottom: 2rem;
}

.doc-title {
    font-size: 2.25rem;
    font-weight: 700;
    color: var(--doc-text);
    margin: 0 0 0.5rem;
    line-height: 1.2;
}

.doc-subtitle {
    font-size: 1.125rem;
    color: var(--doc-text-muted);
    margin: 0;
}

.doc-meta {
    display: flex;
    gap: 1rem;
    margin-top: 1rem;
    font-size: 0.875rem;
    color: var(--doc-text-light);
}

.doc-meta-item {
    display: flex;
    align-items: center;
    gap: 0.375rem;
}

/* ============================================
   Content Typography
   ============================================ */
.doc-content h1 {
    font-size: 2rem;
    font-weight: 700;
    margin: 2.5rem 0 1rem;
    color: var(--doc-text);
}

.doc-content h2 {
    font-size: 1.5rem;
    font-weight: 600;
    margin: 2rem 0 1rem;
    color: var(--doc-text);
    padding-bottom: 0.5rem;
    border-bottom: 2px solid var(--doc-border);
}

.doc-content h3 {
    font-size: 1.25rem;
    font-weight: 600;
    margin: 1.5rem 0 0.75rem;
    color: var(--doc-text);
}

.doc-content h4 {
    font-size: 1rem;
    font-weight: 600;
    margin: 1.25rem 0 0.5rem;
    color: var(--doc-text);
}

.doc-content p {
    margin: 0 0 1rem;
    color: var(--doc-text);
}

.doc-content a {
    color: var(--doc-primary);
    text-decoration: none;
    transition: var(--doc-transition);
}

.doc-content a:hover {
    text-decoration: underline;
}

.doc-content ul,
.doc-content ol {
    margin: 0 0 1rem;
    padding-left: 1.5rem;
}

.doc-content li {
    margin-bottom: 0.5rem;
}

.doc-content blockquote {
    margin: 1.5rem 0;
    padding: 1rem 1.5rem;
    background: rgba(102, 126, 234, 0.1);
    border-left: 4px solid var(--doc-primary);
    border-radius: 0 var(--doc-radius) var(--doc-radius) 0;
}

.doc-content blockquote p:last-child {
    margin-bottom: 0;
}

.doc-content hr {
    border: none;
    border-top: 1px solid var(--doc-border);
    margin: 2rem 0;
}

.doc-content code {
    font-family: var(--doc-font-mono);
    background: #f1f5f9;
    padding: 0.125rem 0.375rem;
    border-radius: 4px;
    font-size: 0.875em;
    color: #e11d48;
}

.doc-content pre {
    background: #1e1e1e;
    border-radius: var(--doc-radius);
    padding: 1rem;
    overflow-x: auto;
    margin: 1rem 0;
}

.doc-content pre code {
    background: none;
    color: #e5e7eb;
    padding: 0;
}

/* ============================================
   Cards & Sections
   ============================================ */
.doc-card {
    background: var(--doc-surface);
    border-radius: var(--doc-radius);
    box-shadow: var(--doc-shadow);
    padding: 1.5rem;
    margin-bottom: 1.5rem;
}

.doc-card-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
}

.doc-card-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--doc-text);
    margin: 0;
}

.doc-section {
    margin-bottom: 3rem;
}

.doc-section-title {
    font-size: 1.5rem;
    font-weight: 600;
    color: var(--doc-text);
    margin: 0 0 1rem;
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.doc-section-icon {
    width: 32px;
    height: 32px;
    background: linear-gradient(135deg, var(--doc-primary) 0%, var(--doc-secondary) 100%);
    border-radius: var(--doc-radius-sm);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
}

/* ============================================
   Feature Grid
   ============================================ */
.doc-feature-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
    gap: 1.5rem;
    margin: 2rem 0;
}

.doc-feature-card {
    background: var(--doc-surface);
    border-radius: var(--doc-radius);
    padding: 1.5rem;
    border: 1px solid var(--doc-border);
    transition: var(--doc-transition);
    text-decoration: none;
    color: inherit;
}

.doc-feature-card:hover {
    border-color: var(--doc-primary);
    box-shadow: var(--doc-shadow-md);
    transform: translateY(-2px);
}

.doc-feature-icon {
    width: 48px;
    height: 48px;
    background: linear-gradient(135deg, var(--doc-primary) 0%, var(--doc-secondary) 100%);
    border-radius: var(--doc-radius);
    display: flex;
    align-items: center;
    justify-content: center;
    color: white;
    margin-bottom: 1rem;
}

.doc-feature-title {
    font-size: 1.125rem;
    font-weight: 600;
    color: var(--doc-text);
    margin: 0 0 0.5rem;
}

.doc-feature-desc {
    font-size: 0.875rem;
    color: var(--doc-text-muted);
    margin: 0;
}

/* ============================================
   Alerts & Callouts
   ============================================ */
.doc-alert {
    padding: 1rem 1.25rem;
    border-radius: var(--doc-radius);
    margin: 1rem 0;
    display: flex;
    align-items: flex-start;
    gap: 0.75rem;
}

.doc-alert-icon {
    width: 20px;
    height: 20px;
    flex-shrink: 0;
    margin-top: 0.125rem;
}

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

.doc-alert-title {
    font-weight: 600;
    margin: 0 0 0.25rem;
}

.doc-alert-text {
    margin: 0;
    font-size: 0.875rem;
}

.doc-alert-info {
    background: #dbeafe;
    border: 1px solid #93c5fd;
    color: #1e40af;
}

.doc-alert-success {
    background: #d1fae5;
    border: 1px solid #6ee7b7;
    color: #065f46;
}

.doc-alert-warning {
    background: #fef3c7;
    border: 1px solid #fcd34d;
    color: #92400e;
}

.doc-alert-danger {
    background: #fee2e2;
    border: 1px solid #fca5a5;
    color: #991b1b;
}

/* ============================================
   Tables
   ============================================ */
.doc-table-wrapper {
    overflow-x: auto;
    margin: 1rem 0;
}

.doc-table {
    width: 100%;
    border-collapse: collapse;
    font-size: 0.875rem;
}

.doc-table th {
    background: #f9fafb;
    padding: 0.75rem 1rem;
    text-align: left;
    font-weight: 600;
    color: var(--doc-text);
    border-bottom: 2px solid var(--doc-border);
}

.doc-table td {
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--doc-border);
    color: var(--doc-text);
}

.doc-table tr:hover td {
    background: #f9fafb;
}

/* ============================================
   Buttons
   ============================================ */
.doc-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    padding: 0.75rem 1.5rem;
    border-radius: var(--doc-radius-sm);
    font-size: 0.875rem;
    font-weight: 500;
    text-decoration: none;
    cursor: pointer;
    transition: var(--doc-transition);
    border: none;
}

.doc-btn-primary {
    background: linear-gradient(135deg, var(--doc-primary) 0%, var(--doc-secondary) 100%);
    color: white;
}

.doc-btn-primary:hover {
    transform: translateY(-1px);
    box-shadow: 0 4px 12px rgba(102, 126, 234, 0.4);
}

.doc-btn-secondary {
    background: var(--doc-surface);
    color: var(--doc-text);
    border: 2px solid var(--doc-border);
}

.doc-btn-secondary:hover {
    border-color: var(--doc-primary);
    color: var(--doc-primary);
}

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

.doc-btn-ghost:hover {
    background: rgba(102, 126, 234, 0.1);
}

/* ============================================
   Badges & Tags
   ============================================ */
.doc-badge {
    display: inline-flex;
    align-items: center;
    padding: 0.25rem 0.75rem;
    border-radius: 9999px;
    font-size: 0.75rem;
    font-weight: 500;
}

.doc-badge-primary {
    background: rgba(102, 126, 234, 0.1);
    color: var(--doc-primary);
}

.doc-badge-success {
    background: #d1fae5;
    color: #065f46;
}

.doc-badge-warning {
    background: #fef3c7;
    color: #92400e;
}

.doc-badge-danger {
    background: #fee2e2;
    color: #991b1b;
}

.doc-badge-new {
    background: linear-gradient(135deg, var(--doc-primary) 0%, var(--doc-secondary) 100%);
    color: white;
}

/* ============================================
   Tabs
   ============================================ */
.doc-tabs {
    margin: 1.5rem 0;
}

.doc-tabs-header {
    display: flex;
    border-bottom: 2px solid var(--doc-border);
    gap: 0.5rem;
}

.doc-tab-btn {
    padding: 0.75rem 1.25rem;
    background: none;
    border: none;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--doc-text-muted);
    cursor: pointer;
    position: relative;
    transition: var(--doc-transition);
}

.doc-tab-btn:hover {
    color: var(--doc-text);
}

.doc-tab-btn.active {
    color: var(--doc-primary);
}

.doc-tab-btn.active::after {
    content: '';
    position: absolute;
    bottom: -2px;
    left: 0;
    right: 0;
    height: 2px;
    background: linear-gradient(90deg, var(--doc-primary) 0%, var(--doc-secondary) 100%);
}

.doc-tab-content {
    padding: 1.5rem 0;
}

.doc-tab-panel {
    display: none;
}

.doc-tab-panel.active {
    display: block;
    animation: docFadeIn 0.3s ease;
}

@keyframes docFadeIn {
    from {
        opacity: 0;
        transform: translateY(10px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* ============================================
   Table of Contents (TOC)
   ============================================ */
.doc-toc {
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
    padding: 1rem;
    background: var(--doc-surface);
    border-radius: var(--doc-radius);
    border: 1px solid var(--doc-border);
}

.doc-toc-title {
    font-size: 0.75rem;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--doc-text-muted);
    margin: 0 0 1rem;
}

.doc-toc-list {
    list-style: none;
    padding: 0;
    margin: 0;
}

.doc-toc-item {
    margin-bottom: 0.25rem;
}

.doc-toc-link {
    display: block;
    padding: 0.375rem 0.75rem;
    color: var(--doc-text-muted);
    text-decoration: none;
    font-size: 0.8125rem;
    border-radius: var(--doc-radius-sm);
    transition: var(--doc-transition);
    border-left: 2px solid transparent;
}

.doc-toc-link:hover {
    color: var(--doc-text);
    background: rgba(102, 126, 234, 0.05);
}

.doc-toc-link.active {
    color: var(--doc-primary);
    background: rgba(102, 126, 234, 0.1);
    border-left-color: var(--doc-primary);
}

.doc-toc-link.level-2 {
    padding-left: 1.5rem;
}

.doc-toc-link.level-3 {
    padding-left: 2.25rem;
}

/* ============================================
   Search Results
   ============================================ */
.doc-search-results {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--doc-surface);
    border: 1px solid var(--doc-border);
    border-radius: var(--doc-radius);
    box-shadow: var(--doc-shadow-lg);
    max-height: 400px;
    overflow-y: auto;
    z-index: 100;
}

.doc-search-item {
    display: block;
    padding: 0.75rem 1rem;
    border-bottom: 1px solid var(--doc-border);
    text-decoration: none;
    transition: var(--doc-transition);
}

.doc-search-item:hover {
    background: rgba(102, 126, 234, 0.05);
}

.doc-search-item:last-child {
    border-bottom: none;
}

.doc-search-title {
    font-weight: 500;
    color: var(--doc-text);
    margin-bottom: 0.25rem;
}

.doc-search-preview {
    font-size: 0.8125rem;
    color: var(--doc-text-muted);
}

.doc-search-highlight {
    background: #fef08a;
    padding: 0 0.125rem;
    border-radius: 2px;
}

/* ============================================
   Footer
   ============================================ */
.doc-footer {
    margin-top: 4rem;
    padding: 2rem 0;
    border-top: 1px solid var(--doc-border);
}

.doc-footer-nav {
    display: flex;
    justify-content: space-between;
    gap: 1rem;
}

.doc-footer-link {
    display: flex;
    flex-direction: column;
    padding: 1rem 1.5rem;
    background: var(--doc-surface);
    border: 1px solid var(--doc-border);
    border-radius: var(--doc-radius);
    text-decoration: none;
    transition: var(--doc-transition);
    max-width: 45%;
}

.doc-footer-link:hover {
    border-color: var(--doc-primary);
    box-shadow: var(--doc-shadow-md);
}

.doc-footer-label {
    font-size: 0.75rem;
    color: var(--doc-text-muted);
    margin-bottom: 0.25rem;
}

.doc-footer-title {
    font-weight: 600;
    color: var(--doc-text);
}

.doc-footer-link.prev {
    align-items: flex-start;
}

.doc-footer-link.next {
    align-items: flex-end;
    margin-left: auto;
}

/* ============================================
   Mobile Responsiveness
   ============================================ */
@media (max-width: 1024px) {
    .doc-sidebar {
        position: fixed;
        left: -300px;
        width: 280px;
        z-index: 1000;
        transition: left 0.3s ease;
        box-shadow: var(--doc-shadow-xl);
    }

    .doc-sidebar.open {
        left: 0;
    }

    .doc-sidebar-overlay {
        position: fixed;
        inset: 0;
        background: rgba(0, 0, 0, 0.5);
        z-index: 999;
        opacity: 0;
        pointer-events: none;
        transition: opacity 0.3s ease;
    }

    .doc-sidebar-overlay.visible {
        opacity: 1;
        pointer-events: auto;
    }

    .doc-mobile-header {
        display: flex;
        align-items: center;
        justify-content: space-between;
        padding: 1rem 1.5rem;
        background: var(--doc-surface);
        border-bottom: 1px solid var(--doc-border);
        position: sticky;
        top: 0;
        z-index: 100;
    }

    .doc-menu-btn {
        display: flex;
        align-items: center;
        justify-content: center;
        width: 40px;
        height: 40px;
        background: none;
        border: 1px solid var(--doc-border);
        border-radius: var(--doc-radius-sm);
        cursor: pointer;
    }

    .doc-main {
        padding: 1rem;
    }

    .doc-title {
        font-size: 1.75rem;
    }

    .doc-feature-grid {
        grid-template-columns: 1fr;
    }

    .doc-footer-nav {
        flex-direction: column;
    }

    .doc-footer-link {
        max-width: 100%;
    }
}

/* ============================================
   Print Styles
   ============================================ */
@media print {
    .doc-sidebar,
    .doc-mobile-header,
    .doc-toc {
        display: none !important;
    }

    .doc-layout {
        grid-template-columns: 1fr;
    }

    .doc-card {
        box-shadow: none;
        border: 1px solid #ddd;
    }
}

/* ============================================
   Dark Mode (Optional)
   ============================================ */
.doc-page.dark {
    --doc-bg: #0f172a;
    --doc-surface: #1e293b;
    --doc-text: #f1f5f9;
    --doc-text-muted: #94a3b8;
    --doc-text-light: #64748b;
    --doc-border: #334155;
}

/* ============================================
   Animations
   ============================================ */
.doc-animate-fade-in {
    animation: docFadeIn 0.5s ease;
}

.doc-animate-slide-up {
    animation: docSlideUp 0.5s ease;
}

@keyframes docSlideUp {
    from {
        opacity: 0;
        transform: translateY(20px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

.doc-animate-scale {
    animation: docScale 0.3s ease;
}

@keyframes docScale {
    from {
        opacity: 0;
        transform: scale(0.95);
    }
    to {
        opacity: 1;
        transform: scale(1);
    }
}

/* ============================================
   Scrollbar Styling
   ============================================ */
.doc-sidebar::-webkit-scrollbar,
.doc-toc::-webkit-scrollbar {
    width: 6px;
}

.doc-sidebar::-webkit-scrollbar-track,
.doc-toc::-webkit-scrollbar-track {
    background: transparent;
}

.doc-sidebar::-webkit-scrollbar-thumb,
.doc-toc::-webkit-scrollbar-thumb {
    background: #cbd5e1;
    border-radius: 3px;
}

.doc-sidebar::-webkit-scrollbar-thumb:hover,
.doc-toc::-webkit-scrollbar-thumb:hover {
    background: #94a3b8;
}