/**
 * Kurs-Booking Help Service - Theme Styles
 * Supports Dark and Light themes via data-bs-theme attribute
 */

/* ========================================
   CSS Variables - Dark Theme (Default)
   ======================================== */
:root,
[data-bs-theme="dark"] {
    --kb-primary: #6366f1;
    --kb-primary-hover: #4f46e5;
    --kb-primary-light: rgba(99, 102, 241, 0.2);
    --kb-success: #22c55e;
    --kb-warning: #f59e0b;
    --kb-danger: #ef4444;

    --kb-bg-gradient-start: #1a1a2e;
    --kb-bg-gradient-end: #16213e;
    --kb-sidebar-bg: rgba(30, 30, 46, 0.95);
    --kb-card-bg: rgba(30, 30, 46, 0.8);
    --kb-border-color: rgba(255, 255, 255, 0.1);

    --kb-text-primary: #ffffff;
    --kb-text-secondary: rgba(255, 255, 255, 0.8);
    --kb-text-muted: rgba(255, 255, 255, 0.5);

    --kb-link-color: #a5b4fc;
    --kb-code-bg: rgba(99, 102, 241, 0.2);
    --kb-code-color: #a5b4fc;
    --kb-pre-bg: rgba(0, 0, 0, 0.3);

    --kb-table-header-bg: rgba(99, 102, 241, 0.2);
    --kb-input-bg: rgba(255, 255, 255, 0.05);
    --kb-input-bg-focus: rgba(255, 255, 255, 0.1);

    --kb-scrollbar-track: rgba(0, 0, 0, 0.2);
    --kb-scrollbar-thumb: rgba(255, 255, 255, 0.2);
    --kb-scrollbar-thumb-hover: rgba(255, 255, 255, 0.3);
}

/* ========================================
   CSS Variables - Light Theme
   ======================================== */
[data-bs-theme="light"] {
    --kb-primary: #4f46e5;
    --kb-primary-hover: #4338ca;
    --kb-primary-light: rgba(79, 70, 229, 0.1);
    --kb-success: #16a34a;
    --kb-warning: #d97706;
    --kb-danger: #dc2626;

    --kb-bg-gradient-start: #f8fafc;
    --kb-bg-gradient-end: #e2e8f0;
    --kb-sidebar-bg: #ffffff;
    --kb-card-bg: #ffffff;
    --kb-border-color: rgba(0, 0, 0, 0.1);

    --kb-text-primary: #1e293b;
    --kb-text-secondary: #334155;
    --kb-text-muted: #64748b;

    --kb-link-color: #4f46e5;
    --kb-code-bg: rgba(79, 70, 229, 0.1);
    --kb-code-color: #4f46e5;
    --kb-pre-bg: #f1f5f9;

    --kb-table-header-bg: rgba(79, 70, 229, 0.1);
    --kb-input-bg: #f8fafc;
    --kb-input-bg-focus: #ffffff;

    --kb-scrollbar-track: rgba(0, 0, 0, 0.05);
    --kb-scrollbar-thumb: rgba(0, 0, 0, 0.2);
    --kb-scrollbar-thumb-hover: rgba(0, 0, 0, 0.3);
}

/* ========================================
   Base Styles
   ======================================== */
body {
    min-height: 100vh;
    background: linear-gradient(135deg, var(--kb-bg-gradient-start) 0%, var(--kb-bg-gradient-end) 100%);
    color: var(--kb-text-primary);
}

/* ========================================
   Sidebar
   ======================================== */
.sidebar {
    position: fixed;
    top: 0;
    left: 0;
    width: 280px;
    height: 100vh;
    background: var(--kb-sidebar-bg);
    border-right: 1px solid var(--kb-border-color);
    overflow-y: auto;
    z-index: 1000;
}

.sidebar-brand {
    padding: 1.5rem;
    border-bottom: 1px solid var(--kb-border-color);
    background: linear-gradient(135deg, var(--kb-primary), #8b5cf6);
}

.sidebar-brand h4 {
    margin: 0;
    font-weight: 700;
    color: #ffffff;
}

.sidebar-brand small {
    color: rgba(255, 255, 255, 0.7);
}

.sidebar-nav {
    padding: 1rem 0;
}

.nav-section {
    padding: 0.5rem 1.5rem;
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    color: var(--kb-text-muted);
    margin-top: 1rem;
}

.nav-link {
    padding: 0.6rem 1.5rem;
    color: var(--kb-text-secondary);
    display: flex;
    align-items: center;
    gap: 0.75rem;
    transition: all 0.2s;
    border-left: 3px solid transparent;
}

.nav-link:hover {
    background: var(--kb-primary-light);
    color: var(--kb-text-primary);
    border-left-color: var(--kb-primary);
}

.nav-link.active {
    background: var(--kb-primary-light);
    color: var(--kb-text-primary);
    border-left-color: var(--kb-primary);
}

.nav-link i {
    font-size: 1.1rem;
    width: 1.5rem;
}

/* ========================================
   Main Content
   ======================================== */
.main-content {
    margin-left: 280px;
    padding: 2rem;
    min-height: 100vh;
}

/* ========================================
   Search Box
   ======================================== */
.search-box {
    padding: 1rem 1.5rem;
}

.search-box .form-control {
    background: var(--kb-input-bg);
    border: 1px solid var(--kb-border-color);
    color: var(--kb-text-primary);
}

.search-box .form-control::placeholder {
    color: var(--kb-text-muted);
}

.search-box .form-control:focus {
    background: var(--kb-input-bg-focus);
    border-color: var(--kb-primary);
    box-shadow: 0 0 0 3px rgba(99, 102, 241, 0.25);
    color: var(--kb-text-primary);
}

.search-box .input-group-text {
    background: var(--kb-input-bg);
    border: 1px solid var(--kb-border-color);
    color: var(--kb-text-muted);
}

/* ========================================
   AJAX Search Results Dropdown
   ======================================== */
.search-results-dropdown {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    margin: 0 1.5rem;
    background: var(--kb-card-bg);
    border: 1px solid var(--kb-border-color);
    border-radius: 8px;
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.3);
    z-index: 1050;
    max-height: 400px;
    overflow-y: auto;
}

[data-bs-theme="light"] .search-results-dropdown {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.15);
}

.search-result-item {
    display: flex;
    align-items: center;
    padding: 0.75rem 1rem;
    color: var(--kb-text-secondary);
    text-decoration: none;
    border-bottom: 1px solid var(--kb-border-color);
    transition: all 0.15s ease;
}

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

.search-result-item:hover,
.search-result-item.active {
    background: var(--kb-primary-light);
    color: var(--kb-text-primary);
}

.search-result-item i {
    color: var(--kb-primary);
    flex-shrink: 0;
}

.search-result-title {
    flex: 1;
    font-weight: 500;
}

.search-result-section {
    color: var(--kb-text-muted);
    margin-left: 0.5rem;
    font-size: 0.75rem;
    background: var(--kb-primary-light);
    padding: 0.15rem 0.5rem;
    border-radius: 4px;
}

.search-no-results {
    padding: 1.5rem;
    text-align: center;
    color: var(--kb-text-muted);
}

.search-show-all {
    background: var(--kb-primary-light);
    font-weight: 500;
    color: var(--kb-primary) !important;
}

.search-show-all:hover {
    background: var(--kb-primary);
    color: #ffffff !important;
}

/* ========================================
   Cards
   ======================================== */
.card {
    background: var(--kb-card-bg);
    border: 1px solid var(--kb-border-color);
    border-radius: 12px;
    color: var(--kb-text-primary);
}

.card-header {
    background: var(--kb-primary-light);
    border-bottom: 1px solid var(--kb-border-color);
}

.topic-card {
    transition: transform 0.2s, box-shadow 0.2s;
}

.topic-card:hover {
    transform: translateY(-2px);
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.2);
}

[data-bs-theme="light"] .topic-card:hover {
    box-shadow: 0 8px 25px rgba(0, 0, 0, 0.1);
}

.badge-section {
    background: var(--kb-primary);
    font-size: 0.7rem;
}

/* ========================================
   Content Body
   ======================================== */
.content-body h3 {
    color: var(--kb-primary);
    margin-top: 1.5rem;
    margin-bottom: 1rem;
}

.content-body h4 {
    color: var(--kb-link-color);
    margin-top: 1.25rem;
}

.content-body table {
    width: 100%;
    margin: 1rem 0;
}

.content-body table th,
.content-body table td {
    padding: 0.75rem;
    border: 1px solid var(--kb-border-color);
}

.content-body table th {
    background: var(--kb-table-header-bg);
}

.content-body code {
    background: var(--kb-code-bg);
    padding: 0.2rem 0.4rem;
    border-radius: 4px;
    color: var(--kb-code-color);
}

.content-body pre {
    background: var(--kb-pre-bg);
    padding: 1rem;
    border-radius: 8px;
    overflow-x: auto;
}

.content-body pre code {
    background: transparent;
    padding: 0;
}

.content-body ul,
.content-body ol {
    padding-left: 1.5rem;
}

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

.content-body a {
    color: var(--kb-link-color);
}

.content-body a:hover {
    color: var(--kb-primary);
}

/* ========================================
   Info Boxes
   ======================================== */
.tip-box {
    background: rgba(34, 197, 94, 0.1);
    border-left: 4px solid var(--kb-success);
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

.warning-box {
    background: rgba(245, 158, 11, 0.1);
    border-left: 4px solid var(--kb-warning);
    padding: 1rem;
    border-radius: 0 8px 8px 0;
    margin: 1rem 0;
}

/* ========================================
   Theme Toggle Button (Header, top right)
   ======================================== */
.theme-toggle {
    position: fixed;
    top: 1rem;
    right: 1.5rem;
    padding: 0.5rem 1rem;
    border-radius: 8px;
    background: var(--kb-card-bg);
    border: 1px solid var(--kb-border-color);
    color: var(--kb-text-secondary);
    font-size: 0.875rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    z-index: 1001;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.15);
}

.theme-toggle:hover {
    background: var(--kb-primary);
    color: #ffffff;
    border-color: var(--kb-primary);
}

.theme-toggle:active {
    transform: scale(0.98);
}

.theme-toggle .bi-sun-fill,
.theme-toggle .theme-label-light {
    display: none;
}

.theme-toggle .bi-moon-fill,
.theme-toggle .theme-label-dark {
    display: inline;
}

[data-bs-theme="light"] .theme-toggle .bi-sun-fill,
[data-bs-theme="light"] .theme-toggle .theme-label-light {
    display: inline;
}

[data-bs-theme="light"] .theme-toggle .bi-moon-fill,
[data-bs-theme="light"] .theme-toggle .theme-label-dark {
    display: none;
}

@media (max-width: 991px) {
    .theme-toggle {
        top: 0.75rem;
        right: 4rem;
        padding: 0.4rem 0.75rem;
        font-size: 0.8rem;
    }

    .theme-toggle .theme-label-dark,
    .theme-toggle .theme-label-light {
        display: none !important;
    }
}

/* ========================================
   TOC Sidebar
   ======================================== */
.toc-sidebar {
    position: sticky;
    top: 2rem;
    max-height: calc(100vh - 4rem);
    overflow-y: auto;
}

.toc-nav {
    display: flex;
    flex-direction: column;
}

.toc-link {
    display: block;
    padding: 0.4rem 0.75rem;
    color: var(--kb-text-muted);
    text-decoration: none;
    font-size: 0.875rem;
    border-left: 2px solid transparent;
    transition: all 0.2s ease;
}

.toc-link:hover {
    color: var(--kb-text-primary);
    background: var(--kb-primary-light);
}

.toc-link.active {
    color: var(--kb-primary);
    border-left-color: var(--kb-primary);
    background: var(--kb-primary-light);
}

.toc-link-sub {
    padding-left: 1.5rem;
    font-size: 0.8125rem;
}

.toc-card {
    border: 1px solid rgba(99, 102, 241, 0.3);
}

/* ========================================
   Scrollbar
   ======================================== */
::-webkit-scrollbar {
    width: 8px;
}

::-webkit-scrollbar-track {
    background: var(--kb-scrollbar-track);
}

::-webkit-scrollbar-thumb {
    background: var(--kb-scrollbar-thumb);
    border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
    background: var(--kb-scrollbar-thumb-hover);
}

/* ========================================
   Smooth Scroll
   ======================================== */
html {
    scroll-behavior: smooth;
}

[id] {
    scroll-margin-top: 1rem;
}

/* ========================================
   Mobile Responsive
   ======================================== */
@media (max-width: 991px) {
    .sidebar {
        transform: translateX(-100%);
        transition: transform 0.3s;
    }

    .sidebar.show {
        transform: translateX(0);
    }

    .main-content {
        margin-left: 0;
    }

    .mobile-toggle {
        display: block !important;
    }

    .toc-sidebar {
        position: static;
        max-height: none;
    }

}

.mobile-toggle {
    display: none;
    position: fixed;
    top: 1rem;
    left: 1rem;
    z-index: 1001;
}

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

    .main-content {
        margin-left: 0;
    }
}