/* Modern Dark Dictionary App Stylesheet */

@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@300;400;500;600;700&family=Playfair+Display:ital,wght@0,500;0,700;1,500&display=swap');

html {
    scroll-behavior: smooth;
}

:root {
    /* DEFAULT: Obsidian Dark */
    --bg-gradient: linear-gradient(135deg, #090616 0%, #110d24 50%, #05030b 100%);
    --bg-card: rgba(22, 17, 45, 0.5);
    --bg-card-hover: rgba(30, 24, 60, 0.7);
    --border-color: rgba(255, 255, 255, 0.08);
    --border-focus: rgba(139, 92, 246, 0.5);
    --text-primary: #f8fafc;
    --text-secondary: #94a3b8;
    --accent-color: #8b5cf6; /* Indigo-violet */
    --accent-hover: #a78bfa;
    --accent-glow: rgba(139, 92, 246, 0.35);
    --accent-secondary: #06b6d4; /* Cyan */
    --accent-sec-hover: #22d3ee;
    --shadow-color: rgba(0, 0, 0, 0.5);
    --success-color: #10b981;
    --error-color: #ef4444;
    --transition-speed: 0.3s;
    --font-sans: 'Outfit', sans-serif;
    --font-serif: 'Playfair Display', serif;
}

/* Theme: Midnight Cyber */
body.cyber, html.cyber {
    --bg-gradient: linear-gradient(135deg, #060814 0%, #0b132b 50%, #020308 100%);
    --bg-card: rgba(15, 23, 42, 0.6);
    --bg-card-hover: rgba(30, 41, 59, 0.85);
    --border-color: rgba(6, 182, 212, 0.15);
    --border-focus: rgba(6, 182, 212, 0.6);
    --text-primary: #e2e8f0;
    --text-secondary: #64748b;
    --accent-color: #06b6d4; /* Neon Cyan */
    --accent-hover: #22d3ee;
    --accent-glow: rgba(6, 182, 212, 0.45);
    --accent-secondary: #ec4899; /* Hot Pink */
    --accent-sec-hover: #f472b6;
    --shadow-color: rgba(6, 182, 212, 0.1);
}

/* Theme: Light Glass */
body.light, html.light {
    --bg-gradient: linear-gradient(135deg, #f8fafc 0%, #f1f5f9 50%, #e2e8f0 100%);
    --bg-card: rgba(255, 255, 255, 0.7);
    --bg-card-hover: rgba(255, 255, 255, 0.9);
    --border-color: rgba(15, 23, 42, 0.08);
    --border-focus: rgba(99, 102, 241, 0.5);
    --text-primary: #0f172a;
    --text-secondary: #475569;
    --accent-color: #4f46e5; /* Electric Indigo */
    --accent-hover: #4338ca;
    --accent-glow: rgba(79, 70, 229, 0.2);
    --accent-secondary: #0ea5e9; /* Sky Blue */
    --accent-sec-hover: #38bdf8;
    --shadow-color: rgba(15, 23, 42, 0.08);
}

/* Theme: Sepia Paper */
body.sepia, html.sepia {
    --bg-gradient: linear-gradient(135deg, #f4ecd8 0%, #ece2c6 50%, #dfd3b3 100%);
    --bg-card: rgba(255, 254, 250, 0.6);
    --bg-card-hover: rgba(255, 254, 250, 0.85);
    --border-color: rgba(139, 92, 26, 0.12);
    --border-focus: rgba(180, 83, 9, 0.5);
    --text-primary: #2b1f13;
    --text-secondary: #6e5843;
    --accent-color: #b45309; /* Warm Amber */
    --accent-hover: #92400e;
    --accent-glow: rgba(180, 83, 9, 0.25);
    --accent-secondary: #15803d; /* Forest Green */
    --accent-sec-hover: #166534;
    --shadow-color: rgba(139, 92, 26, 0.08);
}

/* Global Reset */
* {
    box-sizing: border-box;
    margin: 0;
    padding: 0;
}

body {
    font-family: var(--font-sans);
    background: var(--bg-gradient) no-repeat;
    background-attachment: fixed;
    background-size: cover;
    color: var(--text-primary);
    min-height: 100vh;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: flex-start;
    padding: 2rem 1rem 0 1rem;
    overflow-x: hidden;
    transition: background var(--transition-speed) ease, color var(--transition-speed) ease;
    opacity: 0;
    animation: startupIntro 0.8s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

/* Scrollbar Customization */
::-webkit-scrollbar {
    width: 8px;
}
::-webkit-scrollbar-track {
    background: transparent;
}
::-webkit-scrollbar-thumb {
    background: var(--border-color);
    border-radius: 4px;
}
::-webkit-scrollbar-thumb:hover {
    background: var(--accent-color);
}

/* Layout Wrapper */
.app-wrapper {
    width: 100%;
    max-width: 1100px;
    display: grid;
    grid-template-columns: 1fr;
    gap: 2rem;
    position: relative;
    margin-top: 1rem;
    margin-bottom: 4rem; /* Minimum spacing above footer */
}

@media (min-width: 900px) {
    .app-wrapper {
        grid-template-columns: 1.8fr 1fr;
    }
}

/* Header Container */
header {
    width: 100%;
    max-width: 1100px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 1.5rem;
    padding: 0 0.5rem;
}

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

.brand-icon {
    width: 42px;
    height: 42px;
    color: var(--accent-color);
    filter: drop-shadow(0 0 8px var(--accent-glow));
    transition: transform var(--transition-speed) ease;
}

.brand:hover .brand-icon {
    transform: rotate(-10deg) scale(1.1);
}

.logo-wrapper {
    display: flex;
    flex-direction: column;
    align-items: flex-start;
}

.brand-logo {
    font-size: 1.8rem;
    font-weight: 700;
    letter-spacing: -0.5px;
    background: linear-gradient(to right, var(--text-primary) 30%, var(--accent-color) 100%);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    font-family: var(--font-sans);
    line-height: 1.1;
}

.brand-tagline {
    font-size: 0.7rem;
    font-weight: 500;
    font-style: italic;
    color: var(--text-secondary);
    opacity: 0.8;
    margin-top: 2px;
    letter-spacing: 0.2px;
}

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

/* Theme Dropdown */
.theme-selector-wrapper {
    position: relative;
}

select#theme-selector {
    appearance: none;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 2.2rem 0.6rem 1rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 20px;
    cursor: pointer;
    transition: all var(--transition-speed) ease;
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
}

select#theme-selector:focus, select#theme-selector:hover {
    border-color: var(--border-focus);
    box-shadow: 0 0 10px var(--accent-glow);
    outline: none;
}

.select-arrow {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    pointer-events: none;
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
}

/* Glassmorphic Panel Styles */
.panel {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 24px;
    padding: 1.75rem;
    box-shadow: 0 12px 32px var(--shadow-color);
    backdrop-filter: blur(16px);
    -webkit-backdrop-filter: blur(16px);
    transition: transform var(--transition-speed) ease, border-color var(--transition-speed) ease, box-shadow var(--transition-speed) ease, background var(--transition-speed) ease, background-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.panel:hover {
    border-color: rgba(255, 255, 255, 0.12);
}

/* Main Area Container */
.search-container {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
}

/* Input & Search Controls */
.search-bar-wrapper {
    position: relative;
    display: flex;
    align-items: center;
    width: 100%;
}

.search-icon {
    position: absolute;
    left: 18px;
    width: 20px;
    height: 20px;
    color: var(--text-secondary);
    pointer-events: none;
    transition: color var(--transition-speed) ease;
}

input#word {
    width: 100%;
    padding: 1.1rem 3.5rem 1.1rem 5.8rem; /* Clear language selector absolute placement */
    font-size: 1.1rem;
    font-weight: 400;
    border-radius: 99px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.03);
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
}

.search-bar-wrapper:focus-within .search-icon {
    color: var(--accent-color);
}

input#word:focus {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.05);
    box-shadow: 0 0 20px var(--accent-glow);
    outline: none;
}

input#word::placeholder {
    color: var(--text-secondary);
    opacity: 0.6;
}

/* Search buttons inside input wrapper */
.input-actions {
    position: absolute;
    right: 8px;
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.clear-btn, .random-btn, .search-btn-icon {
    background: transparent;
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.clear-btn {
    opacity: 0;
    visibility: hidden;
}

.clear-btn.visible {
    opacity: 1;
    visibility: visible;
}

.clear-btn:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

.random-btn:hover {
    color: var(--accent-secondary);
    background: rgba(6, 182, 212, 0.1);
    transform: rotate(45deg);
}

.search-btn-icon {
    color: var(--text-primary);
    background: var(--accent-color);
}

.search-btn-icon:hover {
    background: var(--accent-hover);
    transform: scale(1.05);
    box-shadow: 0 0 12px var(--accent-glow);
}

/* Word of the Day & Quick Suggestions */
.quick-tips {
    display: flex;
    flex-wrap: wrap;
    justify-content: space-between;
    align-items: center;
    gap: 0.75rem;
    padding: 0 0.5rem;
    font-size: 0.85rem;
}

.word-of-day-btn {
    background: transparent;
    border: none;
    color: var(--accent-secondary);
    cursor: pointer;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.35rem;
    transition: color var(--transition-speed) ease;
}

.word-of-day-btn:hover {
    color: var(--accent-sec-hover);
    text-decoration: underline;
}

.word-of-day-btn svg {
    width: 16px;
    height: 16px;
}

/* Result Styles */
.result {
    margin-top: 0.5rem;
    min-height: 200px;
    position: relative;
}

.welcome-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1rem;
    color: var(--text-secondary);
}

.welcome-icon {
    width: 64px;
    height: 64px;
    margin-bottom: 1.25rem;
    color: var(--accent-color);
    opacity: 0.4;
    animation: float 4s ease-in-out infinite;
}

@keyframes float {
    0%, 100% { transform: translateY(0); }
    50% { transform: translateY(-8px); }
}

.welcome-box h3 {
    color: var(--text-primary);
    margin-bottom: 0.5rem;
    font-weight: 600;
    font-size: 1.25rem;
}

/* Shimmer Loading Skeleton */
.skeleton-wrapper {
    display: flex;
    flex-direction: column;
    gap: 1.5rem;
    animation: fadeIn 0.4s ease-out;
}

.skeleton-title {
    height: 36px;
    width: 50%;
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: 8px;
}

.skeleton-meta {
    height: 20px;
    width: 30%;
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: 6px;
}

.skeleton-body {
    height: 100px;
    width: 100%;
    background: linear-gradient(90deg, rgba(255,255,255,0.03) 25%, rgba(255,255,255,0.08) 50%, rgba(255,255,255,0.03) 75%);
    background-size: 200% 100%;
    animation: shimmer 1.5s infinite linear;
    border-radius: 12px;
}

@keyframes shimmer {
    0% { background-position: -200% 0; }
    100% { background-position: 200% 0; }
}

/* Active Definition Display */
.word-header-container {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 1.25rem;
    margin-bottom: 1.5rem;
}

.word-info h2 {
    font-family: var(--font-serif);
    font-size: 2.5rem;
    font-weight: 700;
    line-height: 1.2;
    margin-bottom: 0.35rem;
    word-break: break-word;
}

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

.phonetic-text {
    font-size: 1.05rem;
    color: var(--accent-secondary);
    font-weight: 500;
}

.audio-btn {
    background: rgba(6, 182, 212, 0.1);
    border: none;
    color: var(--accent-secondary);
    width: 32px;
    height: 32px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.audio-btn:hover {
    background: var(--accent-secondary);
    color: #000;
    transform: scale(1.1);
}

.audio-btn.playing {
    animation: pulseAudio 1s infinite alternate;
}

@keyframes pulseAudio {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(6, 182, 212, 0.4); }
    100% { transform: scale(1.1); box-shadow: 0 0 10px 4px rgba(6, 182, 212, 0.2); }
}

.word-actions {
    display: flex;
    gap: 0.5rem;
}

.action-btn {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 44px;
    height: 44px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.action-btn:hover {
    color: var(--text-primary);
    border-color: var(--border-focus);
    transform: scale(1.05);
}

.action-btn.active {
    color: #e11d48; /* Red heart or yellow bookmark fill */
    background: rgba(225, 29, 72, 0.1);
    border-color: rgba(225, 29, 72, 0.3);
}

.action-btn.bookmarked {
    color: #eab308; /* Yellow star */
    background: rgba(234, 179, 8, 0.1);
    border-color: rgba(234, 179, 8, 0.3);
}

/* Meaning Categories */
.pos-container {
    margin-bottom: 2rem;
    animation: slideUp 0.3s ease-out;
}

@keyframes slideUp {
    from { opacity: 0; transform: translateY(15px); }
    to { opacity: 1; transform: translateY(0); }
}

.pos-header {
    display: flex;
    align-items: center;
    gap: 1rem;
    margin-bottom: 1.1rem;
}

.pos-title {
    font-size: 1.1rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 1px;
    color: var(--accent-color);
}

.pos-line {
    flex-grow: 1;
    height: 1px;
    background: var(--border-color);
}

/* Definitions Cards */
.definitions-list {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 1rem;
}

.definition-item {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    padding: 1.2rem;
    border-radius: 16px;
    transition: background 0.2s ease, border-color 0.2s ease;
}

.definition-item:hover {
    background: rgba(255, 255, 255, 0.04);
    border-color: rgba(255, 255, 255, 0.12);
}

.definition-text {
    font-size: 1.05rem;
    line-height: 1.5;
    margin-bottom: 0.5rem;
}

.definition-text::before {
    content: "•";
    color: var(--accent-color);
    font-weight: bold;
    display: inline-block;
    width: 1rem;
    margin-left: -0.5rem;
}

.example-text {
    font-size: 0.95rem;
    color: var(--text-secondary);
    font-style: italic;
    border-left: 2px solid var(--accent-secondary);
    padding-left: 0.75rem;
    margin-top: 0.5rem;
}

/* Synonyms & Antonyms */
.thesaurus-container {
    margin-top: 1.25rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    padding-top: 1rem;
    border-top: 1px dashed var(--border-color);
}

.thesaurus-row {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    gap: 0.5rem;
}

.thesaurus-label {
    font-size: 0.9rem;
    font-weight: 600;
    color: var(--text-secondary);
    min-width: 80px;
}

.tags-list {
    display: flex;
    flex-wrap: wrap;
    gap: 0.4rem;
}

.tag {
    font-size: 0.85rem;
    background: rgba(255, 255, 255, 0.04);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.25rem 0.75rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.tag:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-1px);
    box-shadow: 0 4px 8px var(--accent-glow);
}

/* Sidebar Sections (Bookmarks & History) */
.sidebar {
    display: flex;
    flex-direction: column;
    gap: 2rem;
}

.sidebar-title {
    font-size: 1.2rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: 0.5rem;
}

.sidebar-title svg {
    width: 20px;
    height: 20px;
    color: var(--accent-color);
}

.sidebar-list {
    list-style: none;
    max-height: 220px;
    overflow-y: auto;
    overflow-x: hidden;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    padding-right: 6px;
}

.sidebar-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 0.6rem 0.85rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 12px;
    font-size: 0.95rem;
    transition: all 0.2s ease;
    cursor: pointer;
}

.sidebar-item:hover {
    background: rgba(255, 255, 255, 0.05);
    border-color: var(--border-focus);
}

.sidebar-item-text {
    flex-grow: 1;
    font-weight: 500;
    transition: transform 0.2s ease;
}

.sidebar-item:hover .sidebar-item-text {
    transform: translateX(4px);
}

.sidebar-item-action {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 4px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.sidebar-item-action:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

.empty-state {
    font-size: 0.85rem;
    color: var(--text-secondary);
    font-style: italic;
    padding: 1.5rem 0.5rem;
    text-align: center;
}

/* Toast System */
.toast-container {
    position: fixed;
    bottom: 24px;
    right: 24px;
    z-index: 9999;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.toast {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.85rem 1.5rem;
    border-radius: 16px;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.3);
    font-size: 0.9rem;
    font-weight: 500;
    display: flex;
    align-items: center;
    gap: 0.75rem;
    backdrop-filter: blur(12px);
    border-left: 4px solid var(--accent-color);
    animation: toastIn 0.3s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes toastIn {
    from { transform: translateY(20px) scale(0.9); opacity: 0; }
    to { transform: translateY(0) scale(1); opacity: 1; }
}

.toast.toast-error {
    border-left-color: var(--error-color);
}

.toast.toast-success {
    border-left-color: var(--success-color);
}

.toast.toast-out {
    animation: toastOut 0.3s ease-in forwards;
}

@keyframes toastOut {
    to { transform: translateY(-20px) scale(0.9); opacity: 0; }
}

/* Error/Not Found screen */
.error-box {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    text-align: center;
    padding: 3rem 1rem;
    animation: fadeIn 0.4s ease-out;
}

.error-icon {
    width: 64px;
    height: 64px;
    color: var(--error-color);
    margin-bottom: 1.25rem;
    opacity: 0.75;
}

.error-box h3 {
    font-size: 1.4rem;
    margin-bottom: 0.5rem;
    color: var(--text-primary);
}

.error-box p {
    color: var(--text-secondary);
    max-width: 340px;
    line-height: 1.5;
}

/* Animations */
@keyframes fadeIn {
    from { opacity: 0; }
    to { opacity: 1; }
}

/* Footer styling removed from duplicate definition - merged below */

/* --- CUSTOM COMPONENT STYLES --- */

/* Custom Dropdown Select */
.custom-select {
    position: relative;
    width: 170px;
    user-select: none;
}

.select-trigger {
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    padding: 0.6rem 1.1rem;
    font-size: 0.9rem;
    font-weight: 550;
    border-radius: 20px;
    cursor: pointer;
    display: flex;
    justify-content: space-between;
    align-items: center;
    transition: all var(--transition-speed) ease;
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
}

.select-trigger:hover, .select-trigger:focus {
    border-color: var(--border-focus);
    box-shadow: 0 0 12px var(--accent-glow);
    outline: none;
}

.select-trigger .select-arrow {
    width: 16px;
    height: 16px;
    color: var(--text-secondary);
    transition: transform 0.25s cubic-bezier(0.4, 0, 0.2, 1);
    margin-left: 0.5rem;
}

.custom-select.open .select-arrow {
    transform: rotate(180deg);
    color: var(--accent-color);
}

.select-options {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    width: 100%;
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    border-radius: 16px;
    list-style: none;
    padding: 0.4rem;
    margin: 0;
    box-shadow: 0 12px 30px var(--shadow-color);
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    z-index: 1000;
    display: none;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 0.2s ease, transform 0.2s ease, display 0.2s allow-discrete;
}

.custom-select.open .select-options {
    display: block;
    opacity: 1;
    transform: translateY(0);
}

.select-options li {
    padding: 0.55rem 0.85rem;
    font-size: 0.9rem;
    font-weight: 500;
    border-radius: 10px;
    cursor: pointer;
    color: var(--text-primary);
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: space-between;
}

.select-options li:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
}

.select-options li.active {
    background: rgba(139, 92, 246, 0.12);
    color: var(--accent-hover);
    font-weight: 600;
}

.select-options li.active::after {
    content: "•";
    color: var(--accent-hover);
    font-size: 1rem;
}

/* Custom Modal Dialog overlay */
.modal-overlay {
    position: fixed;
    inset: 0;
    width: 100%;
    min-height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(10px);
    -webkit-backdrop-filter: blur(10px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99999;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s cubic-bezier(0.16, 1, 0.3, 1);
}

.modal-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.modal-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 24px 64px rgba(0, 0, 0, 0.6);
    border-radius: 28px;
    padding: 2.2rem;
    width: 90%;
    max-width: 400px;
    text-align: center;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    transform: scale(0.9) translateY(12px);
    transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1), background var(--transition-speed) ease, border-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

.modal-overlay.open .modal-card {
    transform: scale(1) translateY(0);
}

.modal-title {
    font-size: 1.35rem;
    font-weight: 700;
    margin-bottom: 0.6rem;
    color: var(--text-primary);
}

.modal-message {
    font-size: 0.95rem;
    color: var(--text-secondary);
    line-height: 1.5;
    margin-bottom: 2rem;
}

.modal-actions {
    display: flex;
    justify-content: center;
    gap: 0.75rem;
}

.modal-btn {
    padding: 0.7rem 1.6rem;
    border-radius: 14px;
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.modal-btn-cancel {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.modal-btn-cancel:hover {
    background: rgba(255, 255, 255, 0.08);
}

.modal-btn-confirm {
    background: var(--accent-color);
    color: white;
}

.modal-btn-confirm:hover {
    background: var(--accent-hover);
    box-shadow: 0 0 12px var(--accent-glow);
    transform: scale(1.02);
}

/* Typo suggestions menu styling */
.typo-suggestions-container {
    margin-top: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 0.75rem;
    animation: fadeIn 0.4s ease-out;
}

.typo-suggestions-container span {
    font-size: 0.95rem;
    font-weight: 600;
    color: var(--text-secondary);
}

.suggestions-list {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.suggestion-tag {
    font-size: 0.9rem;
    font-weight: 500;
    background: rgba(6, 182, 212, 0.08);
    color: var(--accent-secondary);
    border: 1px solid rgba(6, 182, 212, 0.15);
    padding: 0.35rem 0.95rem;
    border-radius: 12px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.suggestion-tag:hover {
    background: var(--accent-secondary);
    color: #000;
    border-color: var(--accent-secondary);
    transform: translateY(-2px);
    box-shadow: 0 6px 12px rgba(6, 182, 212, 0.25);
}

/* Related words container styling */
.related-words-container {
    margin-top: 2.2rem;
    animation: slideUp 0.35s ease-out;
}

.related-tags-list {
    margin-top: 1rem;
    display: flex;
    flex-wrap: wrap;
    gap: 0.5rem;
}

.related-tag {
    font-size: 0.85rem;
    font-weight: 500;
    background: rgba(139, 92, 246, 0.08);
    border: 1px solid rgba(139, 92, 246, 0.15);
    color: var(--text-primary);
    padding: 0.35rem 0.85rem;
    border-radius: 14px;
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.related-tag:hover {
    background: var(--accent-color);
    color: #fff;
    border-color: var(--accent-color);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--accent-glow);
}

/* --- SYSTEM ANIMATIONS & TIMERS (PHASE 3) --- */

/* Intro startup animation */
@keyframes startupIntro {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* Logo drawing animation */
.brand-icon {
    animation: logoDraw 1.1s cubic-bezier(0.16, 1, 0.3, 1) forwards;
}

@keyframes logoDraw {
    0% {
        transform: scale(0.8) rotate(-15deg);
        opacity: 0;
        filter: drop-shadow(0 0 0 transparent);
    }
    50% {
        filter: drop-shadow(0 0 15px var(--accent-glow));
    }
    100% {
        transform: scale(1) rotate(0deg);
        opacity: 1;
        filter: drop-shadow(0 0 8px var(--accent-glow));
    }
}

/* Spinner custom loader */
.loader-spinner {
    width: 38px;
    height: 38px;
    border: 3px solid rgba(255, 255, 255, 0.04);
    border-radius: 50%;
    border-top-color: var(--accent-color);
    border-right-color: var(--accent-secondary);
    animation: spin 0.85s cubic-bezier(0.4, 0.1, 0.4, 0.9) infinite;
    margin: 2.5rem auto;
    filter: drop-shadow(0 0 4px var(--accent-glow));
}

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

/* Sequential streaming cascade layout */
.word-header-container {
    animation: revealCascading 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.pos-container {
    animation: revealCascading 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
}

.pos-container:nth-of-type(1) { animation-delay: 0.08s; }
.pos-container:nth-of-type(2) { animation-delay: 0.18s; }
.pos-container:nth-of-type(3) { animation-delay: 0.28s; }
.pos-container:nth-of-type(4) { animation-delay: 0.38s; }

.related-words-container {
    animation: revealCascading 0.4s cubic-bezier(0.16, 1, 0.3, 1) forwards;
    opacity: 0;
    animation-delay: 0.45s;
}

@keyframes revealCascading {
    from {
        opacity: 0;
        transform: translateY(12px);
    }
    to {
        opacity: 1;
        transform: translateY(0);
    }
}

/* --- OFFLINE MODE NOTICE & POLICY DIALOGS (PHASE 4) --- */

/* --- PREMIUM CONNECTION STATUS POPUP --- */
.connection-widget {
    position: fixed;
    bottom: 24px;
    left: 24px;
    z-index: 99999;
    pointer-events: none;
    perspective: 1000px;
}

.connection-card {
    display: flex;
    align-items: flex-start;
    gap: 1rem;
    background: rgba(22, 17, 45, 0.7); /* Translucent glass fallback */
    border: 1px solid var(--border-color);
    box-shadow: 0 16px 40px rgba(0, 0, 0, 0.5);
    border-radius: 20px;
    padding: 1.1rem 1.4rem;
    max-width: 350px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    pointer-events: auto;
    transform: translateY(120px) rotateX(-15deg);
    opacity: 0;
    transition: all 0.5s cubic-bezier(0.16, 1, 0.3, 1);
}

.connection-card.visible {
    transform: translateY(0) rotateX(0deg);
    opacity: 1;
}

/* Theme adaptation inside cards */
body.cyber .connection-card {
    background: rgba(15, 23, 42, 0.75);
    border-color: rgba(6, 182, 212, 0.2);
}

body.light .connection-card {
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 16px 40px rgba(15, 23, 42, 0.12);
}

body.sepia .connection-card {
    background: rgba(255, 254, 250, 0.85);
    border-color: rgba(139, 92, 26, 0.15);
}

/* Offline state layout styling */
.connection-card.offline {
    border-left: 4px solid var(--error-color);
}

/* Online state layout styling */
.connection-card.online {
    border-left: 4px solid var(--success-color);
}

.connection-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 36px;
    height: 36px;
    border-radius: 10px;
    flex-shrink: 0;
}

.connection-card.offline .connection-icon {
    background: rgba(239, 68, 68, 0.12);
    color: var(--error-color);
}

.connection-card.online .connection-icon {
    background: rgba(16, 185, 129, 0.12);
    color: var(--success-color);
}

.connection-info {
    flex-grow: 1;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.connection-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
}

.connection-header h4 {
    font-size: 0.95rem;
    font-weight: 700;
    margin: 0;
    color: var(--text-primary);
}

.connection-badge {
    font-size: 0.65rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    padding: 0.15rem 0.45rem;
    border-radius: 6px;
}

.connection-badge.offline {
    background: rgba(239, 68, 68, 0.15);
    color: #fca5a5;
}

.connection-badge.online {
    background: rgba(16, 185, 129, 0.15);
    color: #a7f3d0;
}

.connection-info p {
    font-size: 0.8rem;
    line-height: 1.4;
    color: var(--text-secondary);
    margin: 0;
}

.connection-close {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    margin-top: -2px;
}

.connection-close:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--text-primary);
}

body.light .connection-close:hover {
    background: rgba(0, 0, 0, 0.05);
}

/* Info Tabbed Overlay Modal */
.info-overlay {
    position: fixed;
    inset: 0;
    width: 100%;
    min-height: 100%;
    background: rgba(0, 0, 0, 0.6);
    backdrop-filter: blur(12px);
    -webkit-backdrop-filter: blur(12px);
    display: flex;
    align-items: center;
    justify-content: center;
    z-index: 99990;
    opacity: 0;
    pointer-events: none;
    transition: opacity 0.3s ease;
}

.info-overlay.open {
    opacity: 1;
    pointer-events: auto;
}

.info-card {
    background: var(--bg-card);
    border: 1px solid var(--border-color);
    box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5);
    border-radius: 28px;
    width: 90%;
    max-width: 760px;
    height: 520px;
    display: flex;
    flex-direction: column;
    position: relative;
    overflow: hidden;
    backdrop-filter: blur(24px);
    -webkit-backdrop-filter: blur(24px);
    transform: scale(0.95) translateY(15px);
    transition: transform 0.35s cubic-bezier(0.16, 1, 0.3, 1), background var(--transition-speed) ease, border-color var(--transition-speed) ease, color var(--transition-speed) ease;
}

@media (min-width: 650px) {
    .info-card {
        flex-direction: row;
    }
}

.info-overlay.open .info-card {
    transform: scale(1) translateY(0);
}

/* Close Button */
.info-close-btn {
    position: absolute;
    top: 18px;
    right: 18px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    color: var(--text-secondary);
    width: 36px;
    height: 36px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
    z-index: 10;
}

.info-close-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.08);
    border-color: var(--border-focus);
    transform: scale(1.05);
}

/* Tabs Sidebar */
.info-tabs {
    width: 100%;
    background: rgba(0, 0, 0, 0.15);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem 1rem;
    display: flex;
    flex-direction: row;
    gap: 0.5rem;
    overflow-x: auto;
    flex-shrink: 0;
}

@media (min-width: 650px) {
    .info-tabs {
        width: 210px;
        height: 100%;
        border-bottom: none;
        border-right: 1px solid var(--border-color);
        flex-direction: column;
        overflow-y: auto;
        padding-top: 3.5rem;
    }
}

.tab-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    padding: 0.65rem 1.1rem;
    border-radius: 10px;
    cursor: pointer;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    font-weight: 600;
    text-align: left;
    transition: all 0.2s ease;
    white-space: nowrap;
}

.tab-btn:hover {
    color: var(--text-primary);
    background: rgba(255, 255, 255, 0.03);
}

.tab-btn.active {
    background: rgba(139, 92, 246, 0.12);
    color: var(--accent-hover);
}

/* Content Area */
.info-content-wrapper {
    flex-grow: 1;
    padding: 2.2rem;
    overflow-y: auto;
    height: 100%;
    display: flex;
    flex-direction: column;
    justify-content: flex-start;
    padding-top: 3.5rem;
}

.tab-content {
    display: none;
    animation: fadeIn 0.3s ease;
}

.tab-content.active {
    display: block;
}

.tab-content h2 {
    font-size: 1.6rem;
    font-weight: 700;
    margin-bottom: 0.35rem;
    color: var(--text-primary);
}

.tab-content .subtitle {
    font-size: 0.9rem;
    font-weight: 600;
    font-style: italic;
    color: var(--accent-secondary);
    margin-bottom: 1.5rem;
}

.tab-content p {
    font-size: 0.95rem;
    line-height: 1.6;
    color: var(--text-primary);
    opacity: 0.9;
    margin-bottom: 1rem;
}

.tab-content ul {
    margin-left: 1.2rem;
    margin-bottom: 1rem;
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
    color: var(--text-primary);
    opacity: 0.9;
    font-size: 0.95rem;
    line-height: 1.5;
}

.tab-content ul li::marker {
    color: var(--accent-color);
}

.tab-content strong {
    color: var(--accent-hover);
}

/* Footer upgraded styling */
footer {
    margin-top: auto; /* Push footer to the bottom of the flex container */
    font-size: 0.8rem;
    color: var(--text-secondary);
    text-align: center;
    width: 100%;
    padding: 2.5rem 0;
    border-top: 1px solid var(--border-color);
}

.footer-links {
    display: flex;
    justify-content: center;
    align-items: center;
    flex-wrap: wrap;
    gap: 0.5rem;
    margin-bottom: 0.75rem;
}

.footer-links button {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    opacity: 0.8;
    font-size: 0.85rem;
    font-weight: 600;
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 6px;
    transition: all 0.2s ease;
}

.footer-links button:hover {
    color: var(--accent-hover);
    opacity: 1;
    background: rgba(255, 255, 255, 0.04);
}

.footer-divider {
    color: var(--border-color);
    font-size: 0.75rem;
    user-select: none;
}

footer .copyright {
    font-size: 0.75rem;
    color: var(--text-secondary);
    opacity: 0.65;
    margin-top: 0.25rem;
}

/* --- CUSTOM GLASSMORPHIC CONTEXT MENU --- */
.custom-context-menu {
    position: fixed;
    z-index: 100000;
    background: rgba(22, 17, 45, 0.75); /* Translucent obsidian background */
    border: 1px solid var(--border-color);
    box-shadow: 0 16px 36px rgba(0, 0, 0, 0.5);
    border-radius: 16px;
    padding: 0.4rem;
    min-width: 190px;
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    display: none;
    opacity: 0;
    transform: scale(0.95);
    transition: opacity 0.15s ease, transform 0.15s ease, display 0.15s allow-discrete;
}

.custom-context-menu.open {
    display: block;
    opacity: 1;
    transform: scale(1);
}

.cyber .custom-context-menu {
    background: rgba(15, 23, 42, 0.8);
    border-color: rgba(6, 182, 212, 0.2);
}

.light .custom-context-menu {
    background: rgba(255, 255, 255, 0.85);
    box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
}

.sepia .custom-context-menu {
    background: rgba(255, 254, 250, 0.85);
    border-color: rgba(139, 92, 26, 0.15);
}

.context-menu-list {
    list-style: none;
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    gap: 0.15rem;
}

.context-menu-item {
    display: flex;
    align-items: center;
    gap: 0.6rem;
    padding: 0.55rem 0.8rem;
    font-size: 0.85rem;
    font-weight: 550;
    color: var(--text-primary);
    border-radius: 10px;
    cursor: pointer;
    transition: all 0.15s ease;
    user-select: none;
}

.context-menu-item:hover {
    background: rgba(255, 255, 255, 0.05);
    color: var(--accent-color);
}

.light .context-menu-item:hover {
    background: rgba(0, 0, 0, 0.04);
}

.context-menu-item svg {
    color: var(--text-secondary);
    transition: color 0.15s ease;
    flex-shrink: 0;
}

.context-menu-item:hover svg {
    color: var(--accent-color);
}

.context-menu-divider {
    height: 1px;
    background: var(--border-color);
    margin: 0.35rem 0.4rem;
}

.context-menu-header {
    font-size: 0.7rem;
    font-weight: 700;
    text-transform: uppercase;
    letter-spacing: 0.5px;
    color: var(--text-secondary);
    padding: 0.25rem 0.8rem;
    opacity: 0.8;
}

/* Themes inline row inside menu */
.context-menu-themes-row {
    display: flex;
    justify-content: space-between;
    padding: 0.35rem 0.8rem;
    gap: 0.4rem;
}

.ctx-theme-btn {
    flex-grow: 1;
    height: 28px;
    background: rgba(255, 255, 255, 0.03);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
}

.light .ctx-theme-btn {
    background: rgba(0, 0, 0, 0.02);
}

.ctx-theme-btn:hover {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.06);
    transform: translateY(-1px);
}

.ctx-theme-btn.active {
    border-color: var(--accent-hover);
    background: rgba(255, 255, 255, 0.14);
    transform: translateY(-1px);
}

.light .ctx-theme-btn.active {
    background: rgba(0, 0, 0, 0.08);
}

.color-dot {
    width: 12px;
    height: 12px;
    border-radius: 50%;
}

.color-dot.obsidian { background: #8b5cf6; }
.color-dot.cyber { background: #06b6d4; }
.color-dot.light { background: #4f46e5; }
.color-dot.sepia { background: #b45309; }

/* --- CODE-COMMENT CUSTOM NOTES SYSTEM --- */
.word-note-container {
    margin-bottom: 1.5rem;
    animation: fadeIn 0.3s ease-out;
}

.note-comment-card {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    background: rgba(255, 255, 255, 0.015);
    border: 1px dashed var(--border-color);
    border-radius: 12px;
    padding: 0.65rem 1rem;
    font-family: 'Courier New', Courier, monospace; /* Monospace for programming look */
    font-size: 0.9rem;
    line-height: 1.4;
}

body.cyber .note-comment-card {
    background: rgba(6, 182, 212, 0.02);
}

.note-comment-syntax {
    color: #10B981; /* Premium syntax highlight green */
    font-weight: 700;
    user-select: none;
    flex-shrink: 0;
}

body.sepia .note-comment-syntax {
    color: #15803d; /* Dark green for sepia */
}

body.light .note-comment-syntax {
    color: #059669; /* Slightly darker green for light theme */
}

.note-comment-text {
    color: var(--text-primary);
    opacity: 0.85;
    flex-grow: 1;
    word-break: break-word;
}

.note-action-btn {
    background: transparent;
    border: none;
    color: var(--text-secondary);
    cursor: pointer;
    padding: 4px;
    border-radius: 6px;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: all 0.2s ease;
    opacity: 0.4;
}

.note-comment-card:hover .note-action-btn {
    opacity: 0.8;
}

.note-action-btn:hover {
    color: var(--accent-color);
    background: rgba(255, 255, 255, 0.05);
}

.note-action-btn.delete-note:hover {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.1);
}

.add-note-prompt-btn {
    display: inline-flex;
    align-items: center;
    gap: 0.4rem;
    background: transparent;
    border: 1px dashed var(--border-color);
    color: var(--text-secondary);
    font-size: 0.8rem;
    font-weight: 600;
    padding: 0.4rem 0.8rem;
    border-radius: 8px;
    cursor: pointer;
    transition: all 0.2s ease;
}

.add-note-prompt-btn:hover {
    border-color: var(--border-focus);
    color: var(--accent-color);
    background: rgba(255, 255, 255, 0.03);
}

/* Inline Note Editor styling */
.note-editor-card {
    background: var(--bg-card);
    border: 1px solid var(--border-focus);
    border-radius: 16px;
    padding: 1rem;
    box-shadow: 0 8px 20px var(--accent-glow);
    display: flex;
    flex-direction: column;
    gap: 0.75rem;
}

.note-editor-card textarea {
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    color: var(--text-primary);
    border-radius: 10px;
    padding: 0.6rem;
    font-family: var(--font-sans);
    font-size: 0.9rem;
    resize: vertical;
    min-height: 70px;
    outline: none;
    transition: border-color 0.2s ease;
}

.note-editor-card textarea:focus {
    border-color: var(--border-focus);
}

.note-editor-actions {
    display: flex;
    justify-content: flex-end;
    gap: 0.5rem;
}

.note-editor-btn {
    padding: 0.4rem 0.9rem;
    border-radius: 8px;
    font-size: 0.8rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
}

.note-editor-btn.cancel {
    background: rgba(255, 255, 255, 0.04);
    color: var(--text-primary);
    border: 1px solid var(--border-color);
}

.note-editor-btn.save {
    background: var(--accent-color);
    color: white;
}

.note-editor-btn.save:hover {
    background: var(--accent-hover);
}

/* Comment Indicator in Sidebar Lists */
.note-indicator {
    color: #10B981;
    font-size: 0.75rem;
    font-weight: 800;
    margin-left: 0.35rem;
    font-family: monospace;
    letter-spacing: -0.5px;
    vertical-align: middle;
}

body.sepia .note-indicator {
    color: #15803d;
}

body.light .note-indicator {
    color: #059669;
}

/* --- ADVANCED MULTI-LANGUAGE SELECTOR --- */
.search-bar-wrapper .lang-select {
    position: absolute;
    left: 8px;
    width: 76px;
    z-index: 10;
}

.lang-trigger {
    padding: 0.5rem 0.55rem 0.5rem 0.7rem !important;
    border-radius: 99px !important;
    font-size: 0.82rem !important;
    background: rgba(255, 255, 255, 0.04) !important;
    border: 1px solid var(--border-color) !important;
    box-shadow: none !important;
}

.lang-trigger .select-arrow {
    margin-left: 0.15rem !important;
    width: 12px !important;
    height: 12px !important;
}

.lang-options {
    width: 160px !important;
}

/* --- VOICE SEARCH MICROPHONE --- */
.voice-btn {
    background: transparent;
    border: none;
    border-radius: 50%;
    width: 38px;
    height: 38px;
    display: flex;
    align-items: center;
    justify-content: center;
    color: var(--text-secondary);
    cursor: pointer;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
}

.voice-btn:hover {
    color: var(--accent-secondary);
    background: rgba(6, 182, 212, 0.1);
}

.voice-btn.listening {
    color: var(--error-color);
    background: rgba(239, 68, 68, 0.15);
    animation: pulseMic 1.2s infinite alternate;
}

@keyframes pulseMic {
    0% { transform: scale(1); box-shadow: 0 0 0 0 rgba(239, 68, 68, 0.4); }
    100% { transform: scale(1.1); box-shadow: 0 0 10px 4px rgba(239, 68, 68, 0.2); }
}

/* --- SIDEBAR FILTER SEARCH INPUTS --- */
.sidebar-search-wrapper {
    position: relative;
    margin: 0.2rem 0 0.8rem 0;
    display: flex;
    align-items: center;
}

.sidebar-search-input {
    width: 100%;
    padding: 0.5rem 1rem 0.5rem 1.9rem;
    font-size: 0.8rem;
    font-weight: 550;
    border-radius: 12px;
    border: 1px solid var(--border-color);
    background: rgba(255, 255, 255, 0.02);
    color: var(--text-primary);
    transition: all var(--transition-speed) ease;
    outline: none;
}

.sidebar-search-input:focus {
    border-color: var(--border-focus);
    background: rgba(255, 255, 255, 0.04);
    box-shadow: 0 0 8px var(--accent-glow);
}

.sidebar-search-icon {
    position: absolute;
    left: 10px;
    color: var(--text-secondary);
    pointer-events: none;
    opacity: 0.6;
    transition: color var(--transition-speed) ease;
}

.sidebar-search-input:focus + .sidebar-search-icon {
    color: var(--accent-color);
    opacity: 1;
}

.sidebar-search-input::placeholder {
    color: var(--text-secondary);
    opacity: 0.55;
}

/* --- AUDIO PRONUNCIATION SPEED SELECTOR --- */
.speech-speed-wrapper {
    display: inline-flex;
    align-items: center;
    gap: 0.15rem;
    background: rgba(255, 255, 255, 0.02);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 2px 6px;
    margin-left: 0.4rem;
    font-size: 0.75rem;
    font-weight: 600;
    color: var(--text-secondary);
    vertical-align: middle;
    transition: all var(--transition-speed) ease;
}

body.light .speech-speed-wrapper {
    background: rgba(0, 0, 0, 0.02);
}

.speech-speed-select {
    background: transparent;
    border: none;
    color: var(--accent-secondary);
    font-size: 0.75rem;
    font-weight: 700;
    cursor: pointer;
    outline: none;
    padding: 0 2px;
}

.speech-speed-select option {
    background: #0f172a;
    color: white;
}

body.light .speech-speed-select option {
    background: white;
    color: black;
}