/* ===========================================
   Documentation System - Interactive Docs
   Similar to Google/Firebase/Discord/OpenAI
   =========================================== */

/* === CSS VARIABLES === */
:root {
    /* Color System - KidAI Theme */
    --primary-50: #f0f9ff;
    --primary-100: #e0f2fe;
    --primary-500: #306E8C; /* KidAI Blue */
    --primary-600: #24556e; /* KidAI Dark Blue */
    --secondary-500: #8CBF56; /* KidAI Green */
    --secondary-600: #76a346; /* KidAI Dark Green */
    
    --gray-50: #fafafa;
    --gray-100: #f5f5f5;
    --gray-200: #e5e5e5;
    --gray-300: #d4d4d4;
    --gray-400: #a3a3a3;
    --gray-500: #737373;
    --gray-600: #525252;
    --gray-700: #404040;
    --gray-800: #262626;
    --gray-900: #171717;
    
    /* Light Theme */
    --docs-bg-base: #ffffff;
    --docs-bg-elevated: #fafafa;
    --docs-bg-sidebar: #f9fafb;
    --docs-bg-hover: #f5f5f5;
    
    --docs-text-primary: #171717;
    --docs-text-secondary: #525252;
    --docs-text-tertiary: #a3a3a3;
    
    --docs-border-subtle: #f0f0f0;
    --docs-border-light: #e5e5e5;
    --docs-border-medium: #d4d4d4;
    
    --docs-accent: var(--primary-500);
    --docs-accent-hover: var(--primary-600);
    
    --docs-shadow-sm: 0 1px 3px 0 rgba(0, 0, 0, 0.05), 0 1px 2px -1px rgba(0, 0, 0, 0.05);
    --docs-shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.08), 0 2px 4px -2px rgba(0, 0, 0, 0.08);
    --docs-shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.1), 0 4px 6px -4px rgba(0, 0, 0, 0.1);
    
    /* Spacing */
    --docs-space-1: 0.25rem;
    --docs-space-2: 0.5rem;
    --docs-space-3: 0.75rem;
    --docs-space-4: 1rem;
    --docs-space-5: 1.25rem;
    --docs-space-6: 1.5rem;
    --docs-space-8: 2rem;
    
    /* Border Radius */
    --docs-radius-sm: 0.375rem;
    --docs-radius-md: 0.5rem;
    --docs-radius-lg: 0.75rem;
    
    /* Transitions */
    --docs-transition: 200ms cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Typography */
    --docs-font-body: 'Sarabun', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
    --docs-font-heading: 'Prompt', var(--docs-font-body);
    
    /* Font Sizes */
    --docs-text-sm: 0.875rem;
    --docs-text-base: 1rem;
    --docs-text-lg: 1.125rem;
    --docs-text-xl: 1.25rem;
    --docs-text-2xl: 1.5rem;
    --docs-text-3xl: 1.875rem;
}

[data-theme="dark"] {
    --docs-bg-base: #1f1f1f;
    --docs-bg-elevated: #2a2a2a;
    --docs-bg-sidebar: #1a1a1a;
    --docs-bg-hover: #2f2f2f;
    
    --docs-text-primary: #fafafa;
    --docs-text-secondary: #a3a3a3;
    --docs-text-tertiary: #737373;
    
    --docs-border-subtle: #2f2f2f;
    --docs-border-light: #3a3a3a;
    --docs-border-medium: #404040;
}

/* === RESET === */
*,
*::before,
*::after {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}

html {
    font-size: 16px;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale;
    text-rendering: optimizeLegibility;
    scroll-behavior: smooth;
    /* Prevent horizontal scroll */
    overflow-x: hidden;
    width: 100%;
    /* Support for safe areas (notch) */
    padding: env(safe-area-inset-top) env(safe-area-inset-right) env(safe-area-inset-bottom) env(safe-area-inset-left);
}

body {
    font-family: var(--docs-font-body);
    font-size: var(--docs-text-base);
    line-height: 1.6;
    color: var(--docs-text-primary);
    background-color: var(--docs-bg-base);
    /* Modern Polka Dot Pattern - Same as index.html */
    background-image: radial-gradient(var(--gray-300) 1.5px, transparent 1.5px);
    background-size: 32px 32px;
    background-position: 0 0;
    transition: background-color var(--docs-transition), color var(--docs-transition);
    overflow-x: hidden;
    overflow-y: auto;
    width: 100%;
    max-width: 100vw;
    position: relative;
    min-height: 100vh;
    /* Support for safe areas */
    padding-left: env(safe-area-inset-left);
    padding-right: env(safe-area-inset-right);
}

[data-theme="dark"] body {
    background-image: radial-gradient(rgba(255, 255, 255, 0.15) 1.5px, transparent 1.5px);
}

/* === CUSTOM SCROLLBAR === */
/* Webkit browsers (Chrome, Safari, Edge) */
::-webkit-scrollbar {
    width: 12px;
    height: 12px;
}

::-webkit-scrollbar-track {
    background: var(--docs-bg-elevated);
    border-left: 1px solid var(--docs-border-light);
    margin: 4px 0;
    border-radius: 9999px;
}

::-webkit-scrollbar-thumb {
    background: linear-gradient(180deg, var(--primary-600), var(--secondary-600));
    border-radius: 9999px;
    border: 3px solid var(--docs-bg-elevated);
    transition: all var(--docs-transition);
    min-height: 40px;
}

::-webkit-scrollbar-thumb:hover {
    background: linear-gradient(180deg, var(--secondary-600), var(--primary-600));
    border-color: var(--docs-bg-base);
}

::-webkit-scrollbar-thumb:active {
    background: var(--primary-600);
    border-color: var(--docs-bg-elevated);
}

/* Firefox */
* {
    scrollbar-width: thin;
    scrollbar-color: var(--primary-500) var(--docs-bg-elevated);
}

/* === DOCUMENTATION CONTAINER === */
.docs-container {
    display: flex;
    min-height: 100vh;
    width: 100%;
    max-width: 100vw;
    overflow-x: hidden;
}

/* === SIDEBAR === */
.docs-sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--docs-bg-sidebar);
    border-right: 1px solid var(--docs-border-light);
    display: flex;
    flex-direction: column;
    z-index: 1000;
    overflow-y: auto;
    overflow-x: hidden;
    transform: translateX(0);
    transition: transform var(--docs-transition);
}

.docs-sidebar-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: var(--docs-space-4);
    border-bottom: 1px solid var(--docs-border-light);
    background: var(--docs-bg-elevated);
    position: sticky;
    top: 0;
    z-index: 10;
}

.docs-sidebar-brand {
    flex: 1;
}

.docs-brand-link {
    display: flex;
    align-items: center;
    gap: var(--docs-space-3);
    text-decoration: none;
    color: var(--docs-text-primary);
    transition: opacity var(--docs-transition);
}

.docs-brand-link:hover {
    opacity: 0.8;
}

.docs-brand-logo {
    width: 32px;
    height: 32px;
    border-radius: var(--docs-radius-md);
    object-fit: cover;
}

.docs-brand-text {
    font-family: var(--docs-font-heading);
    font-weight: 600;
    font-size: var(--docs-text-lg);
}

.docs-sidebar-close {
    display: none;
    background: transparent;
    border: none;
    color: var(--docs-text-secondary);
    cursor: pointer;
    padding: var(--docs-space-2);
    border-radius: var(--docs-radius-sm);
    transition: all var(--docs-transition);
    width: 32px;
    height: 32px;
    align-items: center;
    justify-content: center;
}

.docs-sidebar-close:hover {
    background: var(--docs-bg-hover);
    color: var(--docs-text-primary);
}

.docs-nav {
    flex: 1;
    padding: var(--docs-space-4);
    overflow-y: auto;
}

.docs-nav-list {
    list-style: none;
}

.docs-nav-item {
    margin-bottom: var(--docs-space-1);
}

.docs-nav-link {
    display: flex;
    align-items: center;
    gap: var(--docs-space-3);
    padding: var(--docs-space-2) var(--docs-space-3);
    color: var(--docs-text-secondary);
    text-decoration: none;
    border-radius: var(--docs-radius-md);
    transition: all var(--docs-transition);
    font-size: var(--docs-text-sm);
    position: relative;
}

.docs-nav-link i {
    width: 16px;
    text-align: center;
    font-size: 0.875rem;
    opacity: 0.7;
}

.docs-nav-link:hover {
    background: var(--docs-bg-hover);
    color: var(--docs-text-primary);
}

.docs-nav-link.active {
    background: rgba(48, 110, 140, 0.1);
    color: var(--docs-accent);
    font-weight: 500;
}

.docs-nav-link.active::before {
    content: '';
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 3px;
    height: 60%;
    background: var(--docs-accent);
    border-radius: 0 2px 2px 0;
}

.docs-nav-sublist {
    list-style: none;
    margin-left: var(--docs-space-6);
    margin-top: var(--docs-space-1);
    max-height: 0;
    overflow: hidden;
    transition: max-height var(--docs-transition);
}

.docs-nav-item.expanded .docs-nav-sublist {
    max-height: 1000px;
}

.docs-nav-item.has-children > .docs-nav-link::after {
    content: '\f107';
    font-family: 'Font Awesome 6 Free';
    font-weight: 900;
    margin-left: auto;
    transition: transform var(--docs-transition);
    font-size: 0.75rem;
}

.docs-nav-item.expanded > .docs-nav-link::after {
    transform: rotate(180deg);
}

/* === SIDEBAR OVERLAY (Mobile) === */
.docs-sidebar-overlay {
    display: none;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    bottom: 0;
    background: rgba(0, 0, 0, 0.5);
    backdrop-filter: blur(4px);
    z-index: 999;
    opacity: 0;
    transition: opacity var(--docs-transition);
    pointer-events: none;
}

.docs-sidebar-overlay.active {
    opacity: 1;
    pointer-events: auto;
}

/* === MAIN CONTENT === */
.docs-main {
    flex: 1;
    margin-left: 280px;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    background: var(--docs-bg-base);
}

/* === HEADER === */
.docs-header {
    position: sticky;
    top: 0;
    z-index: 100;
    background: var(--docs-bg-elevated);
    border-bottom: 1px solid var(--docs-border-light);
    padding: var(--docs-space-4) var(--docs-space-6);
    display: flex;
    align-items: center;
    gap: var(--docs-space-4);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
}

.docs-mobile-menu-btn {
    display: none;
    background: transparent;
    border: none;
    color: var(--docs-text-secondary);
    cursor: pointer;
    padding: var(--docs-space-2);
    border-radius: var(--docs-radius-sm);
    transition: all var(--docs-transition);
    width: 40px;
    height: 40px;
    align-items: center;
    justify-content: center;
}

.docs-mobile-menu-btn:hover {
    background: var(--docs-bg-hover);
    color: var(--docs-text-primary);
}

.docs-header-title {
    flex: 1;
}

.docs-header-title h1 {
    font-family: var(--docs-font-heading);
    font-size: var(--docs-text-2xl);
    font-weight: 600;
    color: var(--docs-text-primary);
    margin: 0;
    line-height: 1.2;
}

.docs-header-subtitle {
    font-size: var(--docs-text-sm);
    color: var(--docs-text-tertiary);
    margin-top: var(--docs-space-1);
}

.docs-header-actions {
    display: flex;
    align-items: center;
    gap: var(--docs-space-3);
}

.docs-back-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--docs-space-2);
    padding: var(--docs-space-2) var(--docs-space-4);
    color: var(--docs-text-secondary);
    text-decoration: none;
    border-radius: var(--docs-radius-md);
    transition: all var(--docs-transition);
    font-size: var(--docs-text-sm);
}

.docs-back-btn:hover {
    background: var(--docs-bg-hover);
    color: var(--docs-text-primary);
}

/* === NAVIGATION DROPDOWN === */
.docs-nav-dropdown {
    position: relative;
}

.docs-nav-dropdown-btn {
    display: inline-flex;
    align-items: center;
    gap: var(--docs-space-2);
    padding: var(--docs-space-2) var(--docs-space-4);
    background: var(--docs-bg-base);
    border: 1px solid var(--docs-border-medium);
    border-radius: var(--docs-radius-md);
    color: var(--docs-text-secondary);
    font-size: var(--docs-text-sm);
    font-family: var(--docs-font-body);
    cursor: pointer;
    transition: all var(--docs-transition);
    white-space: nowrap;
}

.docs-nav-dropdown-btn:hover {
    background: var(--docs-bg-hover);
    border-color: var(--docs-accent);
    color: var(--docs-text-primary);
}

.docs-nav-dropdown-btn i:last-child {
    font-size: 0.75rem;
    transition: transform var(--docs-transition);
}

.docs-nav-dropdown.active .docs-nav-dropdown-btn i:last-child {
    transform: rotate(180deg);
}

.docs-nav-dropdown-menu {
    position: absolute;
    top: calc(100% + var(--docs-space-2));
    right: 0;
    min-width: 220px;
    background: var(--docs-bg-base);
    border: 1px solid var(--docs-border-light);
    border-radius: var(--docs-radius-md);
    box-shadow: var(--docs-shadow-lg);
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition: all var(--docs-transition);
    z-index: 1001;
    overflow: hidden;
    pointer-events: none;
}

.docs-nav-dropdown.active .docs-nav-dropdown-menu {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
    pointer-events: auto;
}

.docs-nav-dropdown-item {
    display: flex;
    align-items: center;
    gap: var(--docs-space-3);
    padding: var(--docs-space-3) var(--docs-space-4);
    color: var(--docs-text-secondary);
    text-decoration: none;
    font-size: var(--docs-text-sm);
    transition: all var(--docs-transition);
    border-left: 3px solid transparent;
}

.docs-nav-dropdown-item i {
    width: 16px;
    text-align: center;
    color: var(--docs-accent);
    opacity: 0.7;
}

.docs-nav-dropdown-item:hover {
    background: var(--docs-bg-hover);
    color: var(--docs-text-primary);
    border-left-color: var(--docs-accent);
}

.docs-nav-dropdown-item:hover i {
    opacity: 1;
}

.docs-nav-dropdown-item.active {
    background: rgba(48, 110, 140, 0.1);
    color: var(--docs-accent);
    font-weight: 500;
    border-left-color: var(--docs-accent);
}

.docs-nav-dropdown-item.active i {
    opacity: 1;
}

/* === OVERRIDE APP-ROUTER.CSS PINK COLORS === */
/* Force use blue theme instead of pink in documentation pages */
body[data-page-id="terms"] a[href].active,
body[data-page-id="privacy"] a[href].active,
body[data-page-id="refund"] a[href].active,
body[data-page-id="contact"] a[href].active,
.docs-container a[href].active {
    color: var(--docs-accent, #306E8C) !important;
}

body[data-page-id="terms"] a[href]:hover::after,
body[data-page-id="privacy"] a[href]:hover::after,
body[data-page-id="refund"] a[href]:hover::after,
body[data-page-id="contact"] a[href]:hover::after,
.docs-container a[href]:hover::after {
    background: var(--docs-accent, #306E8C) !important;
}

body[data-page-id="terms"] .app-loader-spinner,
body[data-page-id="privacy"] .app-loader-spinner,
body[data-page-id="refund"] .app-loader-spinner,
body[data-page-id="contact"] .app-loader-spinner,
.docs-container .app-loader-spinner {
    border-top-color: var(--docs-accent, #306E8C) !important;
}

/* Override all pink/amber colors in documentation pages */
body[data-page-id="terms"] a,
body[data-page-id="privacy"] a,
body[data-page-id="refund"] a,
body[data-page-id="contact"] a,
.docs-container a {
    /* Ensure links use blue theme */
}

body[data-page-id="terms"] a:hover,
body[data-page-id="privacy"] a:hover,
body[data-page-id="refund"] a:hover,
body[data-page-id="contact"] a:hover,
.docs-container a:hover {
    color: var(--docs-accent, #306E8C) !important;
}

/* === CONTENT AREA === */
.docs-content {
    flex: 1;
    padding: var(--docs-space-8) var(--docs-space-6);
    max-width: 900px;
    width: 100%;
    margin: 0 auto;
}

.docs-content h1 {
    font-family: var(--docs-font-heading);
    font-size: var(--docs-text-3xl);
    font-weight: 700;
    color: var(--docs-text-primary);
    margin-bottom: var(--docs-space-6);
    line-height: 1.2;
}

.docs-content h2 {
    font-family: var(--docs-font-heading);
    font-size: var(--docs-text-2xl);
    font-weight: 600;
    color: var(--docs-text-primary);
    margin-top: var(--docs-space-8);
    margin-bottom: var(--docs-space-4);
    line-height: 1.3;
    padding-bottom: var(--docs-space-2);
    border-bottom: 1px solid var(--docs-border-light);
}

.docs-content h3 {
    font-family: var(--docs-font-heading);
    font-size: var(--docs-text-xl);
    font-weight: 600;
    color: var(--docs-text-primary);
    margin-top: var(--docs-space-6);
    margin-bottom: var(--docs-space-3);
    line-height: 1.4;
}

.docs-content h4 {
    font-family: var(--docs-font-heading);
    font-size: var(--docs-text-lg);
    font-weight: 600;
    color: var(--docs-text-primary);
    margin-top: var(--docs-space-4);
    margin-bottom: var(--docs-space-2);
    line-height: 1.4;
}

.docs-content p {
    margin-bottom: var(--docs-space-4);
    color: var(--docs-text-secondary);
    line-height: 1.7;
}

.docs-content ul,
.docs-content ol {
    margin-left: var(--docs-space-6);
    margin-bottom: var(--docs-space-4);
    color: var(--docs-text-secondary);
}

.docs-content li {
    margin-bottom: var(--docs-space-2);
    line-height: 1.6;
}

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

.docs-content a:hover {
    color: var(--docs-accent-hover);
    text-decoration: underline;
}

.docs-content code {
    background: var(--docs-bg-hover);
    padding: 0.125rem 0.375rem;
    border-radius: var(--docs-radius-sm);
    font-family: 'Courier New', monospace;
    font-size: 0.875em;
    color: var(--docs-accent);
}

.docs-content pre {
    background: var(--docs-bg-elevated);
    border: 1px solid var(--docs-border-light);
    border-radius: var(--docs-radius-md);
    padding: var(--docs-space-4);
    overflow-x: auto;
    margin-bottom: var(--docs-space-4);
}

.docs-content pre code {
    background: transparent;
    padding: 0;
    color: var(--docs-text-primary);
}

.docs-content blockquote {
    border-left: 4px solid var(--docs-accent);
    padding-left: var(--docs-space-4);
    margin-left: 0;
    margin-bottom: var(--docs-space-4);
    color: var(--docs-text-secondary);
    font-style: italic;
}

.docs-content table {
    width: 100%;
    border-collapse: collapse;
    margin-bottom: var(--docs-space-4);
}

.docs-content table th,
.docs-content table td {
    padding: var(--docs-space-3);
    border: 1px solid var(--docs-border-light);
    text-align: left;
}

.docs-content table th {
    background: var(--docs-bg-elevated);
    font-weight: 600;
    color: var(--docs-text-primary);
}

.docs-content img {
    max-width: 100%;
    height: auto;
    border-radius: var(--docs-radius-md);
    margin-bottom: var(--docs-space-4);
}

/* === FOOTER === */
.docs-footer {
    margin-top: var(--docs-space-8);
    padding: var(--docs-space-6) var(--docs-space-6);
    border-top: 1px solid var(--docs-border-light);
    background: var(--docs-bg-elevated);
}

.docs-footer-content {
    max-width: 900px;
    margin: 0 auto;
    text-align: center;
}

.docs-footer-content p {
    color: var(--docs-text-tertiary);
    font-size: var(--docs-text-sm);
    margin-bottom: var(--docs-space-3);
}

.docs-footer-links {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--docs-space-3);
    flex-wrap: wrap;
}

.docs-footer-links a {
    color: var(--docs-text-secondary);
    text-decoration: none;
    font-size: var(--docs-text-sm);
    transition: color var(--docs-transition);
}

.docs-footer-links a:hover {
    color: var(--docs-accent);
}

.docs-footer-links span {
    color: var(--docs-text-tertiary);
    font-size: var(--docs-text-sm);
}

/* === RESPONSIVE === */
@media (max-width: 1024px) {
    .docs-content {
        max-width: 100%;
    }
}

@media (max-width: 768px) {
    .docs-sidebar {
        transform: translateX(-100%);
    }
    
    .docs-sidebar.active {
        transform: translateX(0);
    }
    
    .docs-sidebar-close {
        display: flex;
    }
    
    .docs-sidebar-overlay {
        display: block;
    }
    
    .docs-main {
        margin-left: 0;
    }
    
    .docs-mobile-menu-btn {
        display: flex;
    }
    
    .docs-header {
        padding: var(--docs-space-3) var(--docs-space-4);
    }
    
    .docs-header-title h1 {
        font-size: var(--docs-text-xl);
    }
    
    .docs-header-actions {
        gap: var(--docs-space-2);
    }
    
    .docs-nav-dropdown-btn span {
        display: none;
    }
    
    .docs-nav-dropdown-menu {
        right: 0;
        left: auto;
        min-width: 200px;
    }
    
    .docs-content {
        padding: var(--docs-space-6) var(--docs-space-4);
    }
    
    .docs-content h1 {
        font-size: var(--docs-text-2xl);
    }
    
    .docs-content h2 {
        font-size: var(--docs-text-xl);
    }
}

@media (max-width: 480px) {
    .docs-sidebar {
        width: 100%;
        max-width: 320px;
    }
    
    .docs-content {
        padding: var(--docs-space-4) var(--docs-space-3);
    }
    
    .docs-content h1 {
        font-size: var(--docs-text-xl);
    }
}