/* ==========================================================================
   Forensic Portal - Premium CSS stylesheet (RTL Support)
   ========================================================================== */

/* --- Fonts & Variables --- */
:root {
    --font-hebrew: 'Heebo', sans-serif;
    --font-english: 'Outfit', 'Inter', sans-serif;
    
    /* Transitions */
    --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-normal: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
    --transition-slow: 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    
    /* Layout */
    --sidebar-width: 290px;
    --header-height: 80px;
    --border-radius-sm: 8px;
    --border-radius-md: 16px;
    --border-radius-lg: 24px;
}

/* --- Dark Mode Variables (Default) --- */
body.dark-mode {
    --bg-app: hsl(224, 60%, 4%);
    --bg-gradient: radial-gradient(circle at 50% 0%, hsl(222, 47%, 11%) 0%, hsl(224, 60%, 4%) 100%);
    --card-bg: hsla(223, 47%, 14%, 0.45);
    --card-bg-hover: hsla(223, 47%, 18%, 0.65);
    --sidebar-bg: hsla(223, 47%, 8%, 0.75);
    --header-bg: hsla(223, 47%, 6%, 0.6);
    --border-color: hsla(223, 47%, 25%, 0.35);
    --border-color-hover: hsla(223, 47%, 35%, 0.5);
    --text-primary: hsl(210, 40%, 98%);
    --text-secondary: hsl(215, 20%, 75%);
    --text-muted: hsl(215, 15%, 52%);
    --shadow-color: rgba(0, 0, 0, 0.55);
    --glass-glow: 0 8px 32px 0 rgba(0, 0, 0, 0.37);
    --tech-bg: hsla(223, 47%, 22%, 0.6);
    --input-bg: hsla(223, 47%, 10%, 0.6);
}

/* --- Light Mode Variables --- */
body.light-mode {
    --bg-app: hsl(220, 30%, 93%);
    --bg-gradient: radial-gradient(circle at 50% 0%, hsl(210, 60%, 98%) 0%, hsl(220, 30%, 93%) 100%);
    --card-bg: rgba(255, 255, 255, 0.6);
    --card-bg-hover: rgba(255, 255, 255, 0.85);
    --sidebar-bg: rgba(248, 250, 252, 0.8);
    --header-bg: rgba(255, 255, 255, 0.5);
    --border-color: rgba(203, 213, 225, 0.7);
    --border-color-hover: rgba(148, 163, 184, 0.8);
    --text-primary: hsl(222, 47%, 12%);
    --text-secondary: hsl(215, 25%, 32%);
    --text-muted: hsl(215, 15%, 52%);
    --shadow-color: rgba(148, 163, 184, 0.15);
    --glass-glow: 0 8px 32px 0 rgba(148, 163, 184, 0.1);
    --tech-bg: rgba(226, 232, 240, 0.85);
    --input-bg: rgba(255, 255, 255, 0.8);
}

/* --- Category Accent Override --- */
body.theme-dna {
    --accent: hsl(180, 85%, 43%);
    --accent-rgb: 0, 242, 254;
    --accent-hover: hsl(180, 100%, 35%);
    --accent-gradient: linear-gradient(135deg, hsl(180, 85%, 45%), hsl(160, 80%, 40%));
    --accent-glow: rgba(0, 242, 254, 0.35);
}

body.theme-fm {
    --accent: hsl(270, 85%, 65%);
    --accent-rgb: 157, 80, 187;
    --accent-hover: hsl(270, 100%, 55%);
    --accent-gradient: linear-gradient(135deg, hsl(270, 85%, 65%), hsl(290, 80%, 55%));
    --accent-glow: rgba(157, 80, 187, 0.35);
}

body.theme-glossary {
    --accent: hsl(210, 85%, 55%);
    --accent-rgb: 59, 130, 246;
    --accent-hover: hsl(210, 100%, 45%);
    --accent-gradient: linear-gradient(135deg, hsl(210, 85%, 55%), hsl(225, 80%, 45%));
    --accent-glow: rgba(59, 130, 246, 0.35);
}

/* --- Base Reset --- */
* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    scrollbar-width: thin;
    scrollbar-color: var(--accent) transparent;
}

html {
    scroll-behavior: smooth;
    font-size: 16px;
}

body {
    font-family: var(--font-hebrew);
    background: var(--bg-app);
    background-image: var(--bg-gradient);
    color: var(--text-primary);
    min-height: 100vh;
    overflow-x: hidden;
    transition: background var(--transition-slow), color var(--transition-fast);
    direction: rtl;
}

/* --- Scrollbar Customization --- */
::-webkit-scrollbar {
    width: 6px;
    height: 6px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--accent);
    border-radius: 10px;
    opacity: 0.8;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-hover);
}

/* --- Glassmorphic Styles --- */
.glass-panel {
    background: var(--sidebar-bg);
    backdrop-filter: blur(18px) saturate(160%);
    -webkit-backdrop-filter: blur(18px) saturate(160%);
    border-left: 1px solid var(--border-color);
    box-shadow: var(--glass-glow);
}

.glass-card {
    background: var(--card-bg);
    backdrop-filter: blur(12px) saturate(140%);
    -webkit-backdrop-filter: blur(12px) saturate(140%);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    box-shadow: 0 10px 30px -10px var(--shadow-color);
    transition: transform var(--transition-normal), border-color var(--transition-fast), box-shadow var(--transition-normal), background var(--transition-fast);
}

.glass-card:hover {
    transform: translateY(-4px);
    border-color: var(--border-color-hover);
    box-shadow: 0 15px 35px -5px var(--shadow-color), 0 0 15px var(--accent-glow);
    background: var(--card-bg-hover);
}

/* --- Layout Grid --- */
.app-container {
    display: grid;
    grid-template-columns: var(--sidebar-width) 1fr;
    min-height: 100vh;
}

/* --- Sidebar Style --- */
.sidebar {
    position: fixed;
    top: 0;
    right: 0;
    bottom: 0;
    width: var(--sidebar-width);
    z-index: 100;
    display: flex;
    flex-direction: column;
    padding: 1.5rem 1rem;
    overflow-y: auto;
    border-left: 1px solid var(--border-color);
    border-right: none;
}

.sidebar-header {
    margin-bottom: 2rem;
    padding: 0 0.5rem;
}

.logo {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.logo-icon {
    font-size: 1.8rem;
    background: var(--accent-gradient);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    filter: drop-shadow(0 2px 8px var(--accent-glow));
    animation: rotateIcon 12s linear infinite;
}

@keyframes rotateIcon {
    0% { transform: rotate(0deg); }
    100% { transform: rotate(360deg); }
}

.logo-text {
    display: flex;
    flex-direction: column;
}

.logo-title {
    font-family: var(--font-english);
    font-weight: 800;
    font-size: 1.25rem;
    letter-spacing: 2px;
    line-height: 1.1;
    background: linear-gradient(90deg, var(--text-primary), var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.logo-subtitle {
    font-size: 0.75rem;
    color: var(--text-muted);
    font-weight: 500;
    margin-top: 1px;
}

/* Navigation Sections */
.nav-section {
    margin-bottom: 1.75rem;
}

.nav-section-title {
    font-size: 0.75rem;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--text-muted);
    margin-bottom: 0.75rem;
    padding: 0 0.5rem;
    font-weight: 700;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.nav-section-title .badge {
    background: var(--accent-gradient);
    color: #fff;
    padding: 1px 6px;
    border-radius: 20px;
    font-size: 0.7rem;
    font-family: var(--font-english);
}

.category-nav {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.category-btn {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-secondary);
    padding: 0.75rem 1rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-weight: 500;
    font-size: 0.95rem;
    text-align: right;
    transition: all var(--transition-fast);
}

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

.category-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 4px 15px var(--accent-glow);
    font-weight: 700;
}

.category-btn.active .icon-category {
    color: #ffffff;
}

.icon-category {
    font-size: 1.1rem;
    color: var(--text-muted);
    width: 20px;
    text-align: center;
    transition: color var(--transition-fast);
}

/* Chapter Navigation List */
.chapter-list-nav {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
}

.chapter-nav-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 0.55rem 0.75rem;
    border-radius: var(--border-radius-sm);
    color: var(--text-secondary);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.chapter-nav-item:hover {
    background: var(--tech-bg);
    color: var(--text-primary);
}

.chapter-nav-item.active {
    color: var(--accent);
    font-weight: 700;
    background: hsla(var(--accent-rgb), 0.1);
    border-right: 3px solid var(--accent);
}

.chapter-nav-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 190px;
}

.chapter-nav-num {
    font-family: var(--font-english);
    font-size: 0.8rem;
    font-weight: 600;
    color: var(--text-muted);
}

/* Bookmark List in Sidebar */
.bookmark-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.4rem;
}

.bookmark-item {
    display: flex;
    align-items: center;
    justify-content: space-between;
    background: var(--input-bg);
    padding: 0.45rem 0.65rem;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    font-size: 0.8rem;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.bookmark-item:hover {
    border-color: var(--accent);
    background: var(--tech-bg);
}

.bookmark-item-title {
    white-space: nowrap;
    overflow: hidden;
    text-overflow: ellipsis;
    max-width: 170px;
}

.remove-bookmark-btn {
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    padding: 2px;
}

.remove-bookmark-btn:hover {
    color: #ff4757;
}

.empty-state-text {
    font-size: 0.75rem;
    color: var(--text-muted);
    text-align: center;
    padding: 10px 0;
    font-style: italic;
}

/* Glossary Toggle Button */
.glossary-toggle-btn {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.6rem;
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.75rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-weight: 600;
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.glossary-toggle-btn:hover {
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
    background: var(--tech-bg);
}

.glossary-toggle-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 4px 15px var(--accent-glow);
}

/* Sidebar Footer */
.sidebar-footer {
    margin-top: auto;
    padding-top: 1.5rem;
    border-top: 1px solid var(--border-color);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.theme-toggle {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-weight: 500;
    font-size: 0.85rem;
    transition: all var(--transition-fast);
}

.theme-toggle:hover {
    background: var(--card-bg-hover);
    border-color: var(--accent);
}

.theme-toggle .icon-light { display: none; }
body.light-mode .theme-toggle .icon-light { display: inline-block; }
body.light-mode .theme-toggle .icon-dark { display: none; }
body.dark-mode .theme-toggle .icon-dark { display: inline-block; }

.app-version {
    font-size: 0.65rem;
    color: var(--text-muted);
    text-align: center;
    font-family: var(--font-english);
}

/* --- Main Content Layout --- */
.main-content {
    margin-right: var(--sidebar-width);
    margin-left: 0;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    position: relative;
    z-index: 10;
}

/* --- Header bar --- */
.header {
    height: var(--header-height);
    padding: 0 2rem;
    display: flex;
    align-items: center;
    justify-content: space-between;
    position: sticky;
    top: 0;
    z-index: 90;
    background: var(--header-bg);
    backdrop-filter: blur(20px) saturate(180%);
    -webkit-backdrop-filter: blur(20px) saturate(180%);
    border-bottom: 1px solid var(--border-color);
    border-left: none;
}

.header-search {
    position: relative;
    width: 45%;
    max-width: 500px;
    min-width: 250px;
}

.search-icon {
    position: absolute;
    top: 50%;
    right: 1rem;
    transform: translateY(-50%);
    color: var(--text-muted);
    font-size: 0.95rem;
    pointer-events: none;
    transition: color var(--transition-fast);
}

.header-search input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 40px;
    padding: 0.6rem 2.6rem 0.6rem 1.2rem;
    color: var(--text-primary);
    font-family: var(--font-hebrew);
    font-size: 0.9rem;
    transition: all var(--transition-fast);
}

.header-search input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 12px var(--accent-glow);
    background: var(--card-bg-hover);
}

.header-search input:focus + .search-icon {
    color: var(--accent);
}

.clear-search-btn {
    position: absolute;
    top: 50%;
    left: 1rem;
    transform: translateY(-50%);
    background: transparent;
    border: none;
    color: var(--text-muted);
    cursor: pointer;
    font-size: 0.95rem;
    padding: 2px;
}

.clear-search-btn:hover {
    color: var(--text-primary);
}

/* Content Mode Switches */
.header-controls {
    display: flex;
    align-items: center;
    gap: 1.5rem;
}

.global-mode-switch {
    display: flex;
    align-items: center;
    gap: 0.75rem;
}

.mode-label {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-weight: 500;
}

.toggle-group {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    padding: 3px;
    border-radius: 30px;
    display: flex;
    gap: 2px;
}

.toggle-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.45rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.toggle-btn:hover {
    color: var(--text-primary);
}

.toggle-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--accent-glow);
}

/* --- Content Viewport --- */
.content-viewport {
    padding: 2rem;
    flex-grow: 1;
    max-width: 1200px;
    width: 100%;
    margin: 0 auto;
    animation: fadeIn 0.4s ease-out;
}

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

/* Active Category Banner */
.category-banner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 2.2rem;
    margin-bottom: 2rem;
    border-radius: var(--border-radius-lg);
    position: relative;
    overflow: hidden;
}

.banner-content {
    position: relative;
    z-index: 2;
    max-width: 70%;
}

.banner-content h1 {
    font-size: 2.2rem;
    font-weight: 800;
    margin-bottom: 0.5rem;
    letter-spacing: -0.5px;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.banner-content p {
    font-size: 1rem;
    color: var(--text-secondary);
    line-height: 1.5;
}

.banner-decor {
    position: absolute;
    left: 2rem;
    bottom: -1rem;
    opacity: 0.08;
    z-index: 1;
}

.banner-icon {
    font-size: 10rem;
    color: var(--text-primary);
}

/* Chapters Layout Grid */
.chapters-grid {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

/* --- Chapter Card Layout --- */
.chapter-card {
    padding: 2rem;
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    position: relative;
    scroll-margin-top: 100px;
}

/* Bookmark Pin indicator on top right */
.chapter-pin-indicator {
    position: absolute;
    top: 0;
    right: 3rem;
    background: var(--accent-gradient);
    width: 24px;
    height: 32px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: #ffffff;
    border-radius: 0 0 4px 4px;
    box-shadow: 0 4px 10px rgba(0, 0, 0, 0.2);
    font-size: 0.85rem;
    opacity: 0;
    transform: translateY(-10px);
    transition: all var(--transition-normal);
    z-index: 3;
}

.chapter-card.pinned .chapter-pin-indicator {
    opacity: 1;
    transform: translateY(0);
}

.chapter-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
}

.chapter-card-meta {
    display: flex;
    flex-direction: column;
    gap: 0.35rem;
    flex-grow: 1;
}

.chapter-badge-num {
    align-self: flex-start;
    background: hsla(var(--accent-rgb), 0.15);
    border: 1px solid var(--accent);
    color: var(--accent);
    font-family: var(--font-english);
    font-weight: 700;
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 20px;
    text-transform: uppercase;
}

.chapter-title-he {
    font-size: 1.45rem;
    font-weight: 800;
    line-height: 1.3;
    color: var(--text-primary);
}

.chapter-title-en {
    font-family: var(--font-english);
    font-size: 0.95rem;
    color: var(--text-muted);
    font-style: italic;
    direction: ltr;
    text-align: right; /* Aligned with standard layout but showing English */
}

/* Card Header Controls */
.chapter-card-controls {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 5px;
}

.card-bookmark-btn {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: all var(--transition-fast);
}

.card-bookmark-btn:hover {
    color: #ffb300;
    border-color: #ffb300;
    box-shadow: 0 0 10px rgba(255, 179, 0, 0.2);
}

.card-bookmark-btn.active {
    color: #ffb300;
    background: rgba(255, 179, 0, 0.15);
    border-color: #ffb300;
}

/* Chapter Local Switch */
.chapter-local-switch {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 20px;
    padding: 2px;
    display: flex;
    gap: 2px;
}

.chapter-local-switch .switch-option {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.35rem 0.85rem;
    border-radius: 18px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-size: 0.8rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.chapter-local-switch .switch-option.active {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 2px 6px var(--accent-glow);
}

/* Content Body */
.chapter-card-body {
    position: relative;
}

/* Summary Bullet styling */
.summary-bullets-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 0.8rem;
}

.summary-bullets-list li {
    font-size: 1.05rem;
    line-height: 1.6;
    color: var(--text-secondary);
    position: relative;
    padding-right: 1.5rem;
}

.summary-bullets-list li::before {
    content: '';
    position: absolute;
    top: 0.7rem;
    right: 0.2rem;
    width: 6px;
    height: 6px;
    background: var(--accent-gradient);
    border-radius: 50%;
    box-shadow: 0 0 8px var(--accent);
}

/* Extended detailed text styling */
.extended-text-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.extended-text-wrapper p {
    font-size: 1.05rem;
    line-height: 1.7;
    color: var(--text-secondary);
    text-align: justify;
}

/* Technical terms formatting inline */
.tech-term {
    direction: ltr;
    display: inline-block;
    font-family: var(--font-english);
    font-weight: 600;
    color: var(--accent);
    background: var(--tech-bg);
    padding: 2px 8px;
    border-radius: 4px;
    font-size: 0.88em;
    margin: 0 4px;
    border: 1px solid var(--border-color);
}

body.light-mode .tech-term {
    background: var(--tech-bg);
}

/* Key terms badges block */
.chapter-key-terms {
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
    align-items: center;
    border-top: 1px dashed var(--border-color);
    padding-top: 1rem;
    margin-top: 0.5rem;
}

.key-terms-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--text-muted);
    margin-left: 0.5rem;
}

.term-badge {
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.35rem 0.75rem;
    border-radius: 30px;
    font-size: 0.85rem;
    cursor: pointer;
    transition: all var(--transition-fast);
    position: relative;
    display: inline-flex;
    align-items: center;
    gap: 4px;
}

.term-badge:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: hsla(var(--accent-rgb), 0.05);
}

/* --- Media Players Section --- */
.chapter-media-section {
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
    margin-top: 0.5rem;
}

.media-tabs {
    display: flex;
    gap: 0.5rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.75rem;
    margin-bottom: 1rem;
}

.media-tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.4rem 0.9rem;
    border-radius: 6px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-weight: 600;
    font-size: 0.85rem;
    display: flex;
    align-items: center;
    gap: 0.4rem;
    transition: all var(--transition-fast);
}

.media-tab-btn:hover {
    color: var(--text-primary);
    background: var(--tech-bg);
}

.media-tab-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    box-shadow: 0 2px 8px var(--accent-glow);
}

.media-player-content {
    position: relative;
    min-height: 100px;
}

.media-panel {
    display: none;
}

.media-panel.active {
    display: block;
}

/* Premium custom player controls */
.custom-audio-player {
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding: 0.5rem 0;
}

.player-row-main {
    display: flex;
    align-items: center;
    gap: 1rem;
}

.play-pause-btn {
    background: var(--accent-gradient);
    border: none;
    color: #ffffff;
    width: 42px;
    height: 42px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    box-shadow: 0 4px 10px var(--accent-glow);
    font-size: 1.1rem;
    flex-shrink: 0;
    transition: all var(--transition-fast);
}

.play-pause-btn:hover {
    transform: scale(1.08);
}

.timeline-container {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.3rem;
}

.time-slider {
    width: 100%;
    accent-color: var(--accent);
    cursor: pointer;
    height: 6px;
    border-radius: 4px;
}

.time-labels {
    display: flex;
    justify-content: space-between;
    font-family: var(--font-english);
    font-size: 0.75rem;
    color: var(--text-muted);
}

.volume-speed-controls {
    display: flex;
    align-items: center;
    gap: 1rem;
    flex-shrink: 0;
}

.volume-wrap {
    display: flex;
    align-items: center;
    gap: 0.4rem;
}

.volume-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    font-size: 0.9rem;
    padding: 4px;
}

.volume-slider {
    width: 60px;
    accent-color: var(--accent);
    cursor: pointer;
}

.speed-select {
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 4px;
    padding: 2px 6px;
    font-family: var(--font-english);
    font-size: 0.75rem;
    cursor: pointer;
}

.speed-select:focus {
    outline: none;
    border-color: var(--accent);
}

/* Custom Video wrapper */
.custom-video-player-wrapper {
    position: relative;
    border-radius: 8px;
    overflow: hidden;
    background: #000;
    aspect-ratio: 16 / 9;
    max-width: 650px;
    margin: 0 auto;
    border: 1px solid var(--border-color);
}

.custom-video-player-wrapper video {
    width: 100%;
    height: 100%;
    display: block;
}

/* Placeholder Under Construction State */
.media-placeholder {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 1.5rem 1rem;
    border-radius: 8px;
    background: hsla(223, 47%, 10%, 0.4);
    border: 1px dashed var(--border-color);
    gap: 0.5rem;
}

body.light-mode .media-placeholder {
    background: rgba(226, 232, 240, 0.4);
}

.placeholder-icon {
    font-size: 1.6rem;
    color: var(--text-muted);
    animation: pulseIcon 2s infinite ease-in-out;
}

@keyframes pulseIcon {
    0%, 100% { transform: scale(1); opacity: 0.6; }
    50% { transform: scale(1.12); opacity: 1; color: var(--accent); }
}

.placeholder-title {
    font-size: 0.95rem;
    font-weight: 700;
    color: var(--text-primary);
}

.placeholder-subtitle {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-english);
    direction: ltr;
}

/* --- Card Footer & PDF Button --- */
.chapter-card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid var(--border-color);
    padding-top: 1.25rem;
    margin-top: 0.5rem;
}

.pdf-link-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.55rem 1.1rem;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-size: 0.85rem;
    font-weight: 600;
    text-decoration: none;
    transition: all var(--transition-fast);
}

.pdf-link-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: hsla(var(--accent-rgb), 0.05);
    box-shadow: 0 0 8px var(--accent-glow);
}

.pdf-link-btn i {
    font-size: 1rem;
    color: #ff4757; /* Keep PDF red for familiarity */
}

.card-source-page {
    font-size: 0.8rem;
    color: var(--text-muted);
    font-family: var(--font-hebrew);
}

.card-source-page span {
    font-family: var(--font-english);
    font-weight: 600;
}

/* --- Search Results Bar --- */
.search-status-bar {
    padding: 1.25rem;
    margin-bottom: 2rem;
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-color: var(--accent);
    background: hsla(var(--accent-rgb), 0.05);
}

.search-status-text {
    font-size: 1.05rem;
    color: var(--text-primary);
}

.search-status-text strong {
    color: var(--accent);
}

.close-search-status {
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.4rem 1rem;
    border-radius: 20px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.close-search-status:hover {
    background: #ff4757;
    color: #ffffff;
    border-color: transparent;
}

/* --- Glossary View Section --- */
.section-title-bar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
}

.title-wrap h2 {
    font-size: 1.8rem;
    font-weight: 800;
    margin-bottom: 0.25rem;
    background: linear-gradient(135deg, var(--text-primary) 30%, var(--accent));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.title-wrap p {
    font-size: 0.95rem;
    color: var(--text-secondary);
}

.back-to-chapters {
    display: inline-flex;
    align-items: center;
    gap: 0.5rem;
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.55rem 1.1rem;
    border-radius: 30px;
    cursor: pointer;
    font-family: var(--font-hebrew);
    font-size: 0.85rem;
    font-weight: 600;
    transition: all var(--transition-fast);
}

.back-to-chapters:hover {
    border-color: var(--accent);
    color: var(--accent);
}

/* Glossary Filter controls */
.glossary-filter-bar {
    display: flex;
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
    margin-bottom: 2rem;
}

.glossary-search {
    position: relative;
    width: 100%;
}

.glossary-search i {
    position: absolute;
    top: 50%;
    right: 1.25rem;
    transform: translateY(-50%);
    color: var(--text-muted);
}

.glossary-search input {
    width: 100%;
    background: var(--input-bg);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    padding: 0.75rem 2.8rem 0.75rem 1.2rem;
    color: var(--text-primary);
    font-family: var(--font-hebrew);
    font-size: 0.95rem;
    transition: all var(--transition-fast);
}

.glossary-search input:focus {
    outline: none;
    border-color: var(--accent);
    box-shadow: 0 0 10px var(--accent-glow);
}

.glossary-alphabet {
    display: flex;
    flex-wrap: wrap;
    gap: 0.35rem;
    border-top: 1px solid var(--border-color);
    padding-top: 0.75rem;
    justify-content: center;
}

.letter-btn {
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    min-width: 28px;
    height: 28px;
    border-radius: 4px;
    font-family: var(--font-english);
    font-size: 0.75rem;
    font-weight: 600;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all var(--transition-fast);
}

.letter-btn:hover {
    border-color: var(--accent);
    color: var(--accent);
    background: hsla(var(--accent-rgb), 0.05);
}

.letter-btn.active {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
    box-shadow: 0 2px 6px var(--accent-glow);
}

.letter-btn.hebrew {
    font-family: var(--font-hebrew);
    font-size: 0.8rem;
}

/* Glossary Grid */
.glossary-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 1.5rem;
}

.glossary-card {
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    position: relative;
    scroll-margin-top: 100px;
    border-right: 4px solid var(--accent);
}

.glossary-card-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 1rem;
}

.glossary-term-en {
    font-family: var(--font-english);
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--accent);
    direction: ltr;
    text-align: left;
}

.glossary-source-tag {
    background: var(--tech-bg);
    border: 1px solid var(--border-color);
    color: var(--text-muted);
    font-size: 0.75rem;
    padding: 2px 8px;
    border-radius: 20px;
    cursor: pointer;
    white-space: nowrap;
    transition: all var(--transition-fast);
}

.glossary-source-tag:hover {
    background: var(--accent-gradient);
    color: #ffffff;
    border-color: transparent;
}

.glossary-term-he {
    font-size: 1.1rem;
    font-weight: 700;
    color: var(--text-primary);
}

.glossary-definition {
    font-size: 0.92rem;
    line-height: 1.5;
    color: var(--text-secondary);
    text-align: justify;
}

.no-glossary-results {
    grid-column: 1 / -1;
    text-align: center;
    padding: 3rem;
    color: var(--text-muted);
    font-style: italic;
}

/* Highlight matching search text */
.search-highlight {
    background: rgba(255, 215, 0, 0.28);
    border-bottom: 2px solid #ffd700;
    border-radius: 2px;
    padding: 0 2px;
    color: var(--text-primary);
}

body.light-mode .search-highlight {
    background: rgba(255, 215, 0, 0.4);
}

/* --- Responsive Media Queries --- */

/* Desktop layout adjustment (Large Screens) */
@media (min-width: 1400px) {
    .content-viewport {
        max-width: 1300px;
    }
}

/* Tablet Layout (Medium screens: 768px to 1024px) */
@media (max-width: 1024px) {
    :root {
        --sidebar-width: 80px;
    }
    
    .sidebar {
        padding: 1.5rem 0.5rem;
        align-items: center;
    }
    
    .sidebar .logo-text,
    .sidebar .nav-section-title,
    .sidebar .category-btn span,
    .sidebar .chapter-nav-title,
    .sidebar .bookmark-list,
    .sidebar .glossary-toggle-btn span,
    .sidebar #theme-text,
    .sidebar .app-version {
        display: none !important;
    }
    
    .sidebar-header {
        margin-bottom: 3rem;
    }
    
    .logo-icon {
        font-size: 2.2rem;
    }
    
    .category-btn,
    .glossary-toggle-btn,
    .theme-toggle {
        padding: 0.75rem;
        border-radius: 50%;
        width: 48px;
        height: 48px;
        justify-content: center;
        align-items: center;
    }
    
    .chapter-list-nav {
        gap: 0.75rem;
    }
    
    .chapter-nav-item {
        padding: 0.6rem;
        border-radius: 50%;
        width: 38px;
        height: 38px;
        justify-content: center;
        border-right: none !important;
    }
    
    .chapter-nav-item.active {
        background: var(--accent-gradient);
        color: #ffffff;
        box-shadow: 0 2px 8px var(--accent-glow);
    }
    
    .chapter-nav-num {
        color: inherit;
        font-size: 0.95rem;
    }
    
    .main-content {
        margin-right: var(--sidebar-width);
    }
    
    .header {
        padding: 0 1.5rem;
    }
    
    .content-viewport {
        padding: 1.5rem;
    }
}

/* Mobile Layout (< 768px) */
@media (max-width: 767px) {
    :root {
        --sidebar-width: 0px;
        --header-height: 70px;
    }
    
    body {
        padding-bottom: 70px; /* Space for mobile bottom bar */
    }
    
    .sidebar {
        position: fixed;
        top: auto;
        right: 0;
        bottom: 0;
        left: 0;
        width: 100%;
        height: 65px;
        flex-direction: row;
        justify-content: space-around;
        align-items: center;
        padding: 0;
        border-left: none;
        border-top: 1px solid var(--border-color);
        overflow-y: visible;
        background: var(--sidebar-bg);
        border-radius: 16px 16px 0 0;
        box-shadow: 0 -4px 20px rgba(0,0,0,0.25);
    }
    
    .sidebar-header,
    .sidebar .nav-section:nth-of-type(2), /* Chapter links section */
    .sidebar .nav-section:nth-of-type(3), /* Bookmarks section */
    .sidebar .app-version {
        display: none !important;
    }
    
    .sidebar .nav-section {
        margin-bottom: 0;
    }
    
    .category-btn,
    .glossary-toggle-btn,
    .theme-toggle {
        padding: 0;
        width: 44px;
        height: 44px;
        border: none;
        background: transparent;
        color: var(--text-secondary);
        border-radius: 50%;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 1.25rem;
        box-shadow: none !important;
    }
    
    .category-btn.active,
    .glossary-toggle-btn.active {
        color: var(--accent);
        background: transparent;
    }
    
    .sidebar-footer {
        margin-top: 0;
        padding-top: 0;
        border-top: none;
        flex-direction: row;
    }
    
    .main-content {
        margin-right: 0;
    }
    
    .header {
        padding: 0 1rem;
        height: var(--header-height);
    }
    
    .header-search {
        width: 60%;
        min-width: 150px;
    }
    
    .header-search input {
        font-size: 0.8rem;
        padding: 0.5rem 2.2rem 0.5rem 1rem;
    }
    
    .search-icon {
        right: 0.8rem;
    }
    
    .global-mode-switch {
        gap: 0.35rem;
    }
    
    .mode-label {
        display: none;
    }
    
    .toggle-btn {
        padding: 0.35rem 0.75rem;
        font-size: 0.75rem;
    }
    
    .content-viewport {
        padding: 1rem;
    }
    
    .category-banner {
        padding: 1.5rem;
        margin-bottom: 1.25rem;
        border-radius: var(--border-radius-md);
    }
    
    .banner-content {
        max-width: 100%;
    }
    
    .banner-content h1 {
        font-size: 1.6rem;
    }
    
    .banner-content p {
        font-size: 0.85rem;
    }
    
    .banner-decor {
        display: none;
    }
    
    .chapter-card {
        padding: 1.25rem;
        gap: 1rem;
    }
    
    .chapter-card-header {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        padding-bottom: 0.75rem;
    }
    
    .chapter-title-he {
        font-size: 1.15rem;
    }
    
    .chapter-title-en {
        font-size: 0.85rem;
        text-align: right;
    }
    
    .chapter-card-controls {
        justify-content: space-between;
        border-top: 1px dashed var(--border-color);
        padding-top: 0.75rem;
        margin-top: 0.25rem;
    }
    
    .summary-bullets-list li {
        font-size: 0.95rem;
    }
    
    .extended-text-wrapper p {
        font-size: 0.95rem;
        line-height: 1.6;
    }
    
    .chapter-media-section {
        padding: 0.85rem;
    }
    
    .play-pause-btn {
        width: 36px;
        height: 36px;
        font-size: 0.95rem;
    }
    
    .volume-speed-controls {
        gap: 0.5rem;
    }
    
    .volume-slider {
        display: none; /* Hide volume slider on mobile, use hardware buttons */
    }
    
    .chapter-card-footer {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
        padding-top: 0.75rem;
    }
    
    .pdf-link-btn {
        justify-content: center;
    }
    
    .card-source-page {
        text-align: center;
    }
    
    .section-title-bar {
        flex-direction: column;
        align-items: stretch;
        gap: 0.75rem;
    }
    
    .glossary-filter-bar {
        padding: 1rem;
    }
    
    .glossary-grid {
        grid-template-columns: 1fr;
    }
}