/* ==========================================================================
   English69 - Modern Pastel Design System & Responsive Styles
   ========================================================================== */

:root {
    --primary: #4E9F8E;
    --primary-light: #EBF7F4;
    --primary-dark: #377568;
    --secondary: #FF8A80;
    --secondary-light: #FFF0EE;
    --secondary-dark: #E66A60;
    --accent-purple: #9084B6;
    --accent-purple-light: #F2EEFA;
    --accent-yellow: #FCD34D;
    --accent-yellow-light: #FEF9E7;
    --bg-page: #FAF8F5;
    --bg-card: #FFFFFF;
    --text-main: #2D3748;
    --text-muted: #64748B;
    --text-light: #94A3B8;
    --border-color: #E2E8F0;
    --border-soft: #F0EAE1;
    --shadow-sm: 0 2px 8px rgba(78, 159, 142, 0.06);
    --shadow-md: 0 8px 24px rgba(78, 159, 142, 0.09);
    --shadow-lg: 0 16px 36px rgba(78, 159, 142, 0.12);
    --radius-sm: 8px;
    --radius-md: 14px;
    --radius-lg: 20px;
    --radius-full: 9999px;
    --font-sans: 'Prompt', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
}

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

body {
    font-family: var(--font-sans);
    background-color: var(--bg-page);
    color: var(--text-main);
    line-height: 1.6;
    -webkit-font-smoothing: antialiased;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
}

a {
    color: var(--primary);
    text-decoration: none;
    transition: all 0.2s ease;
}

a:hover {
    color: var(--primary-dark);
}

img {
    max-width: 100%;
    height: auto;
}

/* Layout Containers */
.container {
    width: 100%;
    max-width: 1180px;
    margin: 0 auto;
    padding: 0 20px;
}

/* Navbar */
.navbar {
    background-color: rgba(255, 255, 255, 0.95);
    backdrop-filter: blur(10px);
    border-bottom: 1px solid var(--border-soft);
    position: sticky;
    top: 0;
    z-index: 100;
    box-shadow: var(--shadow-sm);
}

.nav-container {
    display: flex;
    align-items: center;
    justify-content: space-between;
    height: 72px;
}

.brand-logo {
    display: flex;
    align-items: center;
    gap: 10px;
    font-size: 1.45rem;
    font-weight: 700;
    color: var(--primary-dark);
}

.brand-logo-img {
    height: 42px;
    width: auto;
    max-width: 175px;
    display: block;
    object-fit: contain;
    transition: transform 0.2s ease, opacity 0.2s ease;
}

.brand-logo:hover .brand-logo-img {
    transform: scale(1.02);
    opacity: 0.95;
}

.brand-badge {
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    color: #fff;
    padding: 3px 10px;
    border-radius: var(--radius-full);
    font-size: 0.75rem;
    font-weight: 600;
}

.nav-search {
    position: relative;
    width: 250px;
    flex-shrink: 0;
}

.nav-search input {
    width: 100%;
    padding: 8px 36px 8px 16px;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    font-size: 0.88rem;
    font-family: inherit;
    background: #fff;
    transition: all 0.2s ease;
}

.nav-search input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(78, 159, 142, 0.15);
}

.nav-search-icon {
    position: absolute;
    right: 12px;
    top: 50%;
    transform: translateY(-50%);
    color: var(--text-light);
    pointer-events: none;
}

.autocomplete-dropdown {
    position: absolute;
    top: calc(100% + 6px);
    left: 0;
    right: 0;
    background: #fff;
    border-radius: var(--radius-md);
    box-shadow: var(--shadow-lg);
    border: 1px solid var(--border-color);
    max-height: 320px;
    overflow-y: auto;
    display: none;
    z-index: 1000;
    text-align: left;
}

.autocomplete-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 10px 14px;
    border-bottom: 1px solid #f3f3f3;
    cursor: pointer;
    font-size: 0.88rem;
}

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

.autocomplete-item:hover {
    background-color: var(--primary-light);
}

/* Nav Menu & Navigation Links (Desktop) */
.nav-menu {
    display: flex;
    align-items: center;
}

.nav-list {
    display: flex;
    align-items: center;
    gap: 6px;
    list-style: none;
    margin: 0;
    padding: 0;
}

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

.nav-link {
    display: inline-flex;
    align-items: center;
    font-weight: 500;
    color: var(--text-main);
    font-size: 0.92rem;
    padding: 7px 12px;
    border-radius: var(--radius-sm);
    transition: all 0.2s ease;
    text-decoration: none;
}

.nav-link-main {
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

.nav-icon {
    font-size: 0.88rem;
    color: var(--text-light);
    display: inline-flex;
    align-items: center;
    justify-content: center;
    width: 1.25em;
    height: 1.25em;
    text-align: center;
    transition: color 0.2s ease;
}

.nav-arrow {
    display: none;
}

.mobile-nav-search,
.nav-mobile-label,
.nav-mobile-footer,
.nav-backdrop {
    display: none;
}

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

.nav-link:hover .nav-icon {
    color: var(--primary);
}

.nav-link.active {
    color: var(--primary-dark);
    background-color: var(--primary-light);
    font-weight: 600;
}

.nav-link.active .nav-icon {
    color: var(--primary-dark);
}

/* Admin Link */
.nav-link-admin {
    color: var(--secondary-dark);
    font-weight: 600;
}

.admin-nav-icon {
    color: var(--secondary-dark);
}

.nav-link-admin:hover,
.nav-link-admin.active {
    color: var(--secondary-dark);
    background-color: var(--secondary-light);
}

.nav-link-admin:hover .admin-nav-icon,
.nav-link-admin.active .admin-nav-icon {
    color: var(--secondary-dark);
}

/* Mobile Toggle Button */
.mobile-toggle {
    display: none;
    align-items: center;
    justify-content: center;
    width: 42px;
    height: 42px;
    border-radius: 10px;
    background: #ffffff;
    border: 1.5px solid var(--border-color);
    color: var(--text-main);
    font-size: 1.15rem;
    cursor: pointer;
    transition: all 0.2s ease;
    padding: 0;
}

.mobile-toggle:hover {
    background-color: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.mobile-toggle.is-active {
    background-color: var(--primary-light);
    color: var(--primary-dark);
    border-color: var(--primary);
}

.mobile-toggle:focus-visible {
    outline: none;
    box-shadow: 0 0 0 3px rgba(78, 159, 142, 0.25);
}

/* Hero & Translation Box Section */
.hero-section {
    padding: 36px 0 24px;
    text-align: center;
}

.hero-title {
    font-size: 2.1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
}

.hero-title span {
    color: var(--primary);
    background: linear-gradient(135deg, var(--primary), var(--secondary));
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
}

.hero-subtitle {
    font-size: 1.05rem;
    color: var(--text-muted);
    max-width: 680px;
    margin: 0 auto 30px;
}

/* Interactive Translation Card */
.translate-card {
    background: var(--bg-card);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-md);
    border: 1px solid var(--border-soft);
    padding: 24px;
    margin-bottom: 40px;
    text-align: left;
}

.translate-toolbar {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-bottom: 1px solid var(--border-soft);
    padding-bottom: 14px;
    margin-bottom: 18px;
}

.lang-switch-wrapper {
    display: flex;
    align-items: center;
    gap: 12px;
}

.lang-pill {
    padding: 6px 16px;
    border-radius: var(--radius-full);
    font-weight: 600;
    font-size: 0.9rem;
    background-color: var(--primary-light);
    color: var(--primary-dark);
}

.btn-swap {
    background-color: #f1f5f9;
    border: 1px solid var(--border-color);
    width: 38px;
    height: 38px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    transition: all 0.2s ease;
}

.btn-swap:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
    transform: rotate(180deg);
}

.translate-grid {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 20px;
}

.translate-box {
    display: flex;
    flex-direction: column;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-md);
    padding: 16px;
    background: #fafafc;
    min-height: 180px;
    position: relative;
    transition: border-color 0.2s;
}

.translate-box:focus-within {
    border-color: var(--primary);
    background: #fff;
}

.translate-textarea {
    width: 100%;
    flex: 1;
    border: none;
    background: transparent;
    resize: none;
    font-family: inherit;
    font-size: 1.05rem;
    color: var(--text-main);
    line-height: 1.6;
}

.translate-textarea:focus {
    outline: none;
}

.translate-box-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-top: 12px;
    padding-top: 8px;
    border-top: 1px dashed #e5e7eb;
}

.char-count {
    font-size: 0.8rem;
    color: var(--text-light);
}

.box-actions {
    display: flex;
    gap: 8px;
}

.btn-icon {
    background: #fff;
    border: 1px solid var(--border-color);
    border-radius: var(--radius-sm);
    width: 34px;
    height: 34px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    color: var(--text-muted);
    transition: all 0.15s;
    font-size: 0.95rem;
}

.btn-icon:hover {
    background: var(--primary-light);
    color: var(--primary);
    border-color: var(--primary);
}

.btn-icon.playing {
    background: var(--primary);
    color: #fff;
    animation: pulse 1s infinite;
}

.translate-actions-center {
    display: flex;
    justify-content: flex-end;
    margin-top: 16px;
    gap: 12px;
}

/* Buttons */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    padding: 10px 22px;
    border-radius: var(--radius-full);
    font-size: 0.95rem;
    font-weight: 600;
    cursor: pointer;
    border: none;
    transition: all 0.2s ease;
    font-family: inherit;
}

.btn-primary {
    background-color: var(--primary);
    color: #fff;
    box-shadow: 0 4px 14px rgba(78, 159, 142, 0.25);
}

.btn-primary:hover {
    background-color: var(--primary-dark);
    color: #fff;
    transform: translateY(-1px);
    box-shadow: 0 6px 18px rgba(78, 159, 142, 0.35);
}

.btn-secondary {
    background-color: var(--secondary);
    color: #fff;
}

.btn-secondary:hover {
    background-color: var(--secondary-dark);
    color: #fff;
}

.btn-outline-primary {
    background: transparent;
    border: 1.5px solid var(--primary);
    color: var(--primary);
}

.btn-outline-primary:hover {
    background: var(--primary-light);
}

.btn-sm {
    padding: 6px 14px;
    font-size: 0.85rem;
}

/* Word of the Day Section */
.wotd-card {
    background: linear-gradient(135deg, #FFF9F5 0%, #F5FBF9 100%);
    border: 1.5px solid #F0E8DD;
    border-radius: var(--radius-lg);
    padding: 26px;
    box-shadow: var(--shadow-sm);
    margin-bottom: 40px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.wotd-badge {
    background-color: var(--secondary);
    color: #fff;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.8rem;
    font-weight: 700;
    letter-spacing: 0.5px;
    display: inline-block;
    margin-bottom: 8px;
}

.wotd-words {
    display: flex;
    align-items: baseline;
    gap: 14px;
    flex-wrap: wrap;
    margin-bottom: 8px;
}

.wotd-word-en {
    font-size: 1.8rem;
    font-weight: 700;
    color: var(--text-main);
}

.wotd-word-th {
    font-size: 1.35rem;
    font-weight: 600;
    color: var(--primary);
}

.wotd-pos {
    background: #E2E8F0;
    color: #475569;
    padding: 2px 8px;
    border-radius: 6px;
    font-size: 0.75rem;
    font-weight: 600;
}

.wotd-sample {
    font-size: 0.95rem;
    color: var(--text-muted);
    font-style: italic;
    margin-top: 6px;
}

/* Section Header */
.section-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-end;
    margin-bottom: 24px;
}

.section-title {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--text-main);
    display: flex;
    align-items: center;
    gap: 10px;
}

.section-subtitle {
    font-size: 0.92rem;
    color: var(--text-muted);
    margin-top: 4px;
}

/* Grids */
.grid-2 {
    display: grid;
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.grid-3 {
    display: grid;
    grid-template-columns: repeat(3, 1fr);
    gap: 24px;
    margin-bottom: 40px;
}

.grid-4 {
    display: grid;
    grid-template-columns: repeat(4, 1fr);
    gap: 20px;
    margin-bottom: 40px;
}

/* Conversation & Article Cards */
.card {
    background: var(--bg-card);
    border-radius: var(--radius-md);
    border: 1px solid var(--border-soft);
    box-shadow: var(--shadow-sm);
    padding: 20px;
    transition: all 0.25s ease;
    display: flex;
    flex-direction: column;
}

.card:hover {
    transform: translateY(-4px);
    box-shadow: var(--shadow-md);
    border-color: #D5E8E2;
}

.card-category-badge {
    align-self: flex-start;
    background-color: var(--primary-light);
    color: var(--primary-dark);
    padding: 4px 10px;
    border-radius: var(--radius-full);
    font-size: 0.78rem;
    font-weight: 600;
    margin-bottom: 12px;
}

.card-title {
    font-size: 1.15rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 10px;
    line-height: 1.4;
}

.card-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    flex: 1;
    margin-bottom: 16px;
    display: -webkit-box;
    -webkit-line-clamp: 3;
    -webkit-box-orient: vertical;
    overflow: hidden;
}

.card-footer {
    display: flex;
    justify-content: space-between;
    align-items: center;
    border-top: 1px solid #F1F5F9;
    padding-top: 12px;
    font-size: 0.82rem;
    color: var(--text-light);
}

/* Trending Keywords Cloud */
.keyword-tags {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-bottom: 40px;
}

.keyword-tag {
    background-color: #fff;
    border: 1.5px solid var(--border-soft);
    padding: 8px 16px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    color: var(--text-main);
    box-shadow: var(--shadow-sm);
    transition: all 0.2s;
}

.keyword-tag:hover {
    background-color: var(--primary-light);
    border-color: var(--primary);
    color: var(--primary-dark);
    transform: scale(1.03);
}

.keyword-tag .sub {
    font-size: 0.75rem;
    color: var(--text-light);
    margin-left: 4px;
}

/* Longtail Keyword Landing Page Styles */
.dict-detail-hero {
    background: linear-gradient(135deg, #FFFDFB 0%, #F3FAF8 100%);
    border: 1.5px solid #E8F2EF;
    border-radius: var(--radius-lg);
    padding: 36px;
    margin-bottom: 30px;
    box-shadow: var(--shadow-sm);
}

.dict-hero-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    margin-bottom: 20px;
}

.dict-word-main {
    font-size: 2.4rem;
    font-weight: 800;
    color: var(--text-main);
    margin-bottom: 6px;
}

.dict-word-trans {
    font-size: 1.7rem;
    font-weight: 700;
    color: var(--primary);
}

.aeo-answer-box {
    background: #FFFFFF;
    border-left: 5px solid var(--primary);
    border-radius: var(--radius-sm);
    padding: 18px 22px;
    margin-top: 20px;
    box-shadow: var(--shadow-sm);
}

.aeo-answer-title {
    font-size: 0.85rem;
    text-transform: uppercase;
    font-weight: 700;
    letter-spacing: 0.5px;
    color: var(--primary-dark);
    margin-bottom: 6px;
}

.aeo-answer-text {
    font-size: 1.1rem;
    color: var(--text-main);
    line-height: 1.6;
}

/* Accordion FAQs */
.faq-section {
    background: #fff;
    border-radius: var(--radius-lg);
    border: 1px solid var(--border-soft);
    padding: 26px;
    margin-bottom: 30px;
}

.faq-item {
    border-bottom: 1px solid #F1F5F9;
    padding: 16px 0;
}

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

.faq-question {
    font-size: 1.05rem;
    font-weight: 600;
    color: var(--text-main);
    display: flex;
    justify-content: space-between;
    align-items: center;
    cursor: pointer;
}

.faq-answer {
    margin-top: 10px;
    color: var(--text-muted);
    font-size: 0.95rem;
    line-height: 1.6;
}

/* ==========================================================================
   Kaikki.org English-to-English Enrichment Styles
   ========================================================================== */
.ipa-badges-wrap {
    display: flex;
    gap: 10px;
    align-items: center;
    margin-top: 10px;
    flex-wrap: wrap;
}

.ipa-badge {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    padding: 4px 12px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    font-weight: 500;
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.ipa-badge:hover {
    transform: translateY(-1px);
    box-shadow: var(--shadow-sm);
}

.ipa-badge.ipa-us {
    background: #EBF7F4;
    border: 1px solid #CDECE3;
    color: var(--primary-dark);
}

.ipa-badge.ipa-uk {
    background: #FFF0EE;
    border: 1px solid #FEDBD7;
    color: var(--secondary-dark);
}

.ipa-flag {
    font-size: 0.8rem;
    font-weight: 700;
    opacity: 0.9;
}

.ipa-text {
    font-family: var(--font-sans);
    font-weight: 600;
    letter-spacing: 0.3px;
    color: inherit;
    background: none;
    padding: 0;
}

.btn-native-audio {
    border-color: var(--primary);
    color: var(--primary-dark);
    background: #FFFFFF;
    transition: all 0.2s ease;
}

.btn-native-audio:hover {
    background: var(--primary-light);
    color: var(--primary-dark);
    border-color: var(--primary-dark);
}

.enrichment-card {
    border-top: 4px solid var(--primary);
}

.enrichment-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
    margin-bottom: 22px;
    padding-bottom: 14px;
    border-bottom: 1.5px solid var(--border-soft);
}

.enrichment-title {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--text-main);
    margin: 0;
}

.dataset-badge {
    display: inline-flex;
    align-items: center;
    font-size: 0.8rem;
    font-weight: 600;
    background: #F1F5F9;
    color: #475569;
    padding: 4px 10px;
    border-radius: var(--radius-full);
}

.senses-container {
    display: flex;
    flex-direction: column;
    gap: 20px;
    margin-bottom: 24px;
}

.sense-block {
    background: #FCFDFD;
    border: 1px solid #E6EFF0;
    border-radius: var(--radius-md);
    padding: 20px;
}

.sense-pos-header {
    display: flex;
    align-items: center;
    gap: 10px;
    margin-bottom: 14px;
}

.pos-badge {
    background: var(--primary);
    color: #FFFFFF;
    font-size: 0.75rem;
    font-weight: 800;
    letter-spacing: 0.5px;
    padding: 3px 10px;
    border-radius: var(--radius-sm);
    text-transform: uppercase;
}

.sense-pos-sub {
    font-size: 0.9rem;
    color: var(--text-muted);
}

.en-definitions-list {
    list-style: none;
    padding: 0;
    margin: 0 0 16px 0;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.def-item {
    display: flex;
    align-items: flex-start;
    gap: 10px;
    font-size: 1.05rem;
    color: var(--text-main);
    line-height: 1.55;
}

.def-check-icon {
    color: var(--primary);
    font-size: 0.85rem;
    margin-top: 5px;
    flex-shrink: 0;
}

.def-text {
    flex: 1;
}

.examples-box {
    background: #F4FAF8;
    border-left: 3px solid var(--primary);
    border-radius: 0 var(--radius-sm) var(--radius-sm) 0;
    padding: 14px 18px;
    margin-top: 12px;
}

.examples-box-title {
    font-size: 0.85rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 8px;
}

.examples-list {
    display: flex;
    flex-direction: column;
    gap: 8px;
}

.example-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 10px;
    font-size: 0.95rem;
    font-style: italic;
    color: #334155;
}

.example-text {
    flex: 1;
}

.btn-copy-mini {
    background: transparent;
    border: 1px solid transparent;
    color: var(--text-light);
    cursor: pointer;
    padding: 4px 8px;
    border-radius: 4px;
    transition: all 0.2s ease;
}

.btn-copy-mini:hover {
    color: var(--primary);
    background: #FFFFFF;
    border-color: #CBD5E1;
}

.forms-section {
    background: #FAF8F5;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 18px;
}

.forms-title {
    display: block;
    font-size: 0.95rem;
    color: var(--text-main);
    margin-bottom: 10px;
}

.forms-tags-wrap {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.form-tag {
    background: #FFFFFF;
    border: 1px solid #E2E8F0;
    color: var(--primary-dark);
    font-size: 0.88rem;
    font-weight: 600;
    padding: 4px 12px;
    border-radius: var(--radius-full);
}

.etymology-box {
    background: #F7F5FA;
    border: 1px solid #ECE7F4;
    border-radius: var(--radius-md);
    padding: 16px 20px;
    margin-bottom: 20px;
}

.etymology-title {
    display: block;
    font-size: 0.95rem;
    color: #4C3A6E;
    margin-bottom: 6px;
}

.etymology-text {
    font-size: 0.92rem;
    color: #475569;
    line-height: 1.6;
    margin: 0;
}

.kaikki-attribution {
    font-size: 0.82rem;
    color: var(--text-light);
    padding-top: 14px;
    border-top: 1px dashed var(--border-color);
    line-height: 1.5;
}

.kaikki-attribution a {
    color: var(--primary-dark);
    text-decoration: underline;
}

.kaikki-attribution a:hover {
    color: var(--primary);
}

/* ==========================================================================
   Adjacent Words Navigation Bar (Word Detail Pages)
   ========================================================================== */
.adjacent-words-bar {
    margin: 36px 0 44px;
    padding: 22px 28px;
    background: #FFFFFF;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
}

.adj-nav-inner {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 20px;
}

.adj-nav-col {
    flex: 1;
    min-width: 0;
}

.adj-nav-prev {
    display: flex;
    justify-content: flex-start;
}

.adj-nav-center {
    flex: 0 0 auto;
    text-align: center;
}

.adj-nav-next {
    display: flex;
    justify-content: flex-end;
}

.adj-link {
    display: inline-flex;
    flex-direction: column;
    padding: 12px 18px;
    background: var(--bg-page);
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-md);
    text-decoration: none;
    transition: all 0.2s cubic-bezier(0.4, 0, 0.2, 1);
    width: 100%;
    max-width: 290px;
    box-sizing: border-box;
}

.adj-link.prev {
    align-items: flex-start;
    text-align: left;
}

.adj-link.next {
    align-items: flex-end;
    text-align: right;
}

.adj-link:hover {
    background: var(--primary-light);
    border-color: rgba(78, 159, 142, 0.4);
    transform: translateY(-2px);
    box-shadow: 0 4px 12px rgba(78, 159, 142, 0.12);
}

.adj-link:hover .adj-word {
    color: var(--primary-dark);
}

.adj-link:hover .adj-tag {
    color: var(--primary-dark);
}

.adj-tag {
    display: inline-flex;
    align-items: center;
    gap: 6px;
    font-size: 0.8rem;
    color: var(--text-light);
    font-weight: 600;
    margin-bottom: 4px;
    transition: color 0.2s ease;
}

.adj-tag i {
    font-size: 0.72rem;
}

.adj-word {
    display: block;
    font-size: 1.05rem;
    color: var(--primary);
    font-weight: 700;
    line-height: 1.35;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
    transition: color 0.2s ease;
}

.adj-desc {
    display: block;
    font-size: 0.82rem;
    color: var(--text-muted);
    margin-top: 3px;
    max-width: 100%;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.adj-browse-btn {
    border-radius: var(--radius-full);
    padding: 8px 18px;
    font-weight: 500;
    white-space: nowrap;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

/* Conversation Detail Page Dialogue View */
.dialogue-container {
    display: flex;
    flex-direction: column;
    gap: 16px;
    margin: 26px 0;
}

.dialogue-bubble {
    display: flex;
    gap: 14px;
    align-items: flex-start;
}

.dialogue-avatar {
    width: 44px;
    height: 44px;
    border-radius: 50%;
    background: var(--primary-light);
    color: var(--primary-dark);
    display: flex;
    align-items: center;
    justify-content: center;
    font-weight: 700;
    font-size: 1.1rem;
    flex-shrink: 0;
    box-shadow: var(--shadow-sm);
}

.dialogue-avatar.staff {
    background: var(--secondary-light);
    color: var(--secondary-dark);
}

.dialogue-content {
    background: #fff;
    border-radius: var(--radius-md);
    border: 1px solid var(--border-soft);
    padding: 14px 18px;
    flex: 1;
    box-shadow: var(--shadow-sm);
    position: relative;
}

.dialogue-speaker {
    font-size: 0.8rem;
    font-weight: 700;
    text-transform: uppercase;
    color: var(--text-light);
    margin-bottom: 4px;
}

.dialogue-en {
    font-size: 1.1rem;
    font-weight: 600;
    color: var(--text-main);
    margin-bottom: 4px;
    display: flex;
    justify-content: space-between;
    align-items: center;
}

.dialogue-th {
    font-size: 0.95rem;
    color: var(--text-muted);
}

.dialogue-notes {
    font-size: 0.82rem;
    color: var(--secondary-dark);
    margin-top: 6px;
    background: #FFF8F6;
    padding: 4px 8px;
    border-radius: 6px;
    display: inline-block;
}

/* Active Dialogue Speaking State & Auto-play Button */
.dialogue-bubble.active-speaking .dialogue-content {
    border-color: var(--primary);
    background: #F4FAF8;
    box-shadow: 0 4px 16px rgba(62, 137, 122, 0.16);
    transition: all 0.25s ease;
}

.dialogue-bubble.active-speaking .dialogue-avatar {
    transform: scale(1.08);
    box-shadow: 0 0 0 4px rgba(62, 137, 122, 0.22);
    transition: transform 0.25s ease;
}

.dialogue-bubble.active-speaking .btn-tts {
    background: var(--primary);
    color: #fff;
    transform: scale(1.08);
}

.btn-autoplay {
    display: inline-flex;
    align-items: center;
    gap: 8px;
    padding: 8px 18px;
    font-size: 0.92rem;
    font-weight: 600;
    border-radius: var(--radius-full);
    border: none;
    cursor: pointer;
    transition: all 0.2s ease;
    user-select: none;
}

.btn-autoplay.is-playing {
    background: #EF4444 !important;
    color: #fff !important;
    box-shadow: 0 0 0 4px rgba(239, 68, 68, 0.25);
}

.btn-autoplay.is-playing:hover {
    background: #DC2626 !important;
}

/* Breadcrumbs */
.breadcrumbs {
    display: flex;
    align-items: center;
    gap: 8px;
    font-size: 0.85rem;
    color: var(--text-light);
    margin-bottom: 20px;
    flex-wrap: wrap;
}

.breadcrumbs a {
    color: var(--text-muted);
}

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

/* Table Custom */
.table-custom {
    width: 100%;
    border-collapse: collapse;
    margin: 20px 0;
    background: #fff;
    border-radius: var(--radius-md);
    overflow: hidden;
    box-shadow: var(--shadow-sm);
}

.table-custom th, .table-custom td {
    padding: 12px 16px;
    text-align: left;
    border-bottom: 1px solid var(--border-color);
}

.table-custom th {
    background: var(--primary-light);
    color: var(--primary-dark);
    font-weight: 600;
}

/* Footer */
.footer {
    background-color: #fff;
    border-top: 1px solid var(--border-soft);
    padding: 48px 0 24px;
    margin-top: auto;
}

.footer-grid {
    display: grid;
    grid-template-columns: 2fr 1fr 1fr 1fr;
    gap: 36px;
    margin-bottom: 36px;
}

.footer-brand {
    font-size: 1.3rem;
    font-weight: 700;
    color: var(--primary-dark);
    margin-bottom: 12px;
}

.footer-brand span {
    color: var(--secondary);
}

.footer-desc {
    font-size: 0.9rem;
    color: var(--text-muted);
    line-height: 1.6;
}

.footer-title {
    font-size: 1rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 16px;
}

.footer-links {
    list-style: none;
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.footer-links a {
    color: var(--text-muted);
    font-size: 0.9rem;
}

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

.footer-bottom {
    text-align: center;
    border-top: 1px solid #F1F5F9;
    padding-top: 20px;
    font-size: 0.85rem;
    color: var(--text-light);
}

/* Toast Notification */
.toast-msg {
    position: fixed;
    bottom: 24px;
    right: 24px;
    background: var(--text-main);
    color: #fff;
    padding: 12px 20px;
    border-radius: var(--radius-full);
    font-size: 0.9rem;
    box-shadow: var(--shadow-lg);
    z-index: 9999;
    opacity: 0;
    transform: translateY(20px);
    transition: all 0.3s ease;
    pointer-events: none;
}

.toast-msg.show {
    opacity: 1;
    transform: translateY(0);
}

/* Animations */
@keyframes pulse {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.15); }
}

/* Common Utility Classes */
.p-1 { padding: 0.25rem !important; }
.p-2 { padding: 0.5rem !important; }
.p-3 { padding: 1rem !important; }
.p-4 { padding: 1.75rem !important; }
.p-5 { padding: 3rem !important; }

.px-1 { padding-left: 0.25rem !important; padding-right: 0.25rem !important; }
.px-2 { padding-left: 0.5rem !important; padding-right: 0.5rem !important; }
.px-3 { padding-left: 1rem !important; padding-right: 1rem !important; }
.px-4 { padding-left: 1.75rem !important; padding-right: 1.75rem !important; }
.px-5 { padding-left: 3rem !important; padding-right: 3rem !important; }

.py-1 { padding-top: 0.25rem !important; padding-bottom: 0.25rem !important; }
.py-2 { padding-top: 0.5rem !important; padding-bottom: 0.5rem !important; }
.py-3 { padding-top: 1rem !important; padding-bottom: 1rem !important; }
.py-4 { padding-top: 1.75rem !important; padding-bottom: 1.75rem !important; }
.py-5 { padding-top: 3rem !important; padding-bottom: 3rem !important; }

.my-1 { margin-top: 0.25rem !important; margin-bottom: 0.25rem !important; }
.my-2 { margin-top: 0.5rem !important; margin-bottom: 0.5rem !important; }
.my-3 { margin-top: 1rem !important; margin-bottom: 1rem !important; }
.my-4 { margin-top: 1.75rem !important; margin-bottom: 1.75rem !important; }
.my-5 { margin-top: 3rem !important; margin-bottom: 3rem !important; }

.mb-1 { margin-bottom: 0.25rem !important; }
.mb-2 { margin-bottom: 0.5rem !important; }
.mb-3 { margin-bottom: 1rem !important; }
.mb-4 { margin-bottom: 1.75rem !important; }
.mb-5 { margin-bottom: 3rem !important; }

.mt-1 { margin-top: 0.25rem !important; }
.mt-2 { margin-top: 0.5rem !important; }
.mt-3 { margin-top: 1rem !important; }
.mt-4 { margin-top: 1.75rem !important; }
.mt-5 { margin-top: 3rem !important; }

.pb-1 { padding-bottom: 0.25rem !important; }
.pb-2 { padding-bottom: 0.5rem !important; }
.pb-3 { padding-bottom: 1rem !important; }
.pb-4 { padding-bottom: 1.75rem !important; }

.pt-1 { padding-top: 0.25rem !important; }
.pt-2 { padding-top: 0.5rem !important; }
.pt-3 { padding-top: 1rem !important; }
.pt-4 { padding-top: 1.75rem !important; }

.d-flex { display: flex !important; }
.flex-wrap { flex-wrap: wrap !important; }
.align-items-center { align-items: center !important; }
.justify-content-between { justify-content: space-between !important; }
.justify-content-center { justify-content: center !important; }
.gap-1 { gap: 0.25rem !important; }
.gap-2 { gap: 0.5rem !important; }
.gap-3 { gap: 1rem !important; }
.gap-4 { gap: 1.5rem !important; }

.border-bottom { border-bottom: 1px solid var(--border-soft) !important; }
.text-center { text-align: center !important; }

/* ==========================================================================
   Responsive Breakpoints & Mobile Navigation
   ========================================================================== */

/* Tablets & Mobile Devices (< 992px) */
@media (max-width: 991px) {
    .navbar {
        height: auto;
    }

    .nav-container {
        height: 64px;
    }

    .brand-logo-img {
        height: 36px;
        max-width: 145px;
    }

    /* Hide desktop header search */
    .nav-search {
        display: none;
    }

    /* Show hamburger toggle button */
    .mobile-toggle {
        display: inline-flex;
    }

    /* Backdrop overlay */
    .nav-backdrop {
        display: block;
        position: fixed;
        inset: 0;
        top: 64px;
        background: rgba(15, 23, 42, 0.45);
        backdrop-filter: blur(4px);
        -webkit-backdrop-filter: blur(4px);
        opacity: 0;
        visibility: hidden;
        transition: opacity 0.25s ease, visibility 0.25s ease;
        z-index: 98;
    }

    .nav-backdrop.open {
        opacity: 1;
        visibility: visible;
    }

    /* Mobile Dropdown Menu Drawer */
    .nav-menu {
        display: flex;
        flex-direction: column;
        align-items: stretch;
        position: absolute;
        top: 64px;
        left: 0;
        right: 0;
        background: #ffffff;
        border-bottom: 1px solid var(--border-soft);
        box-shadow: 0 16px 36px rgba(15, 23, 42, 0.12);
        padding: 16px 18px 20px;
        max-height: calc(100dvh - 64px);
        overflow-y: auto;
        -webkit-overflow-scrolling: touch;
        z-index: 99;
        transform: translateY(-8px);
        opacity: 0;
        visibility: hidden;
        transition: transform 0.25s cubic-bezier(0.16, 1, 0.3, 1), opacity 0.2s ease, visibility 0.25s ease;
    }

    .nav-menu.open {
        transform: translateY(0);
        opacity: 1;
        visibility: visible;
    }

    /* Mobile Search Bar inside menu */
    .mobile-nav-search {
        display: block;
        margin-bottom: 14px;
        position: relative;
        width: 100%;
    }

    .mobile-nav-search form {
        position: relative;
        width: 100%;
    }

    .mobile-nav-search input {
        width: 100%;
        height: 44px;
        padding: 10px 42px 10px 16px;
        border: 1.5px solid var(--border-color);
        border-radius: 12px;
        font-size: 0.92rem;
        font-family: inherit;
        background: var(--bg-page);
        transition: all 0.2s ease;
    }

    .mobile-nav-search input:focus {
        background: #fff;
        border-color: var(--primary);
        box-shadow: 0 0 0 3px rgba(78, 159, 142, 0.15);
        outline: none;
    }

    .mobile-search-btn {
        position: absolute;
        right: 8px;
        top: 50%;
        transform: translateY(-50%);
        width: 32px;
        height: 32px;
        display: inline-flex;
        align-items: center;
        justify-content: center;
        background: none;
        border: none;
        color: var(--primary);
        font-size: 0.95rem;
        cursor: pointer;
    }

    .mobile-nav-search .autocomplete-dropdown {
        position: absolute;
        top: calc(100% + 4px);
        left: 0;
        right: 0;
        background: #fff;
        border-radius: 12px;
        box-shadow: var(--shadow-lg);
        border: 1px solid var(--border-color);
        max-height: 260px;
        overflow-y: auto;
        z-index: 1001;
    }

    /* Section Label */
    .nav-mobile-label {
        display: block;
        font-size: 0.72rem;
        font-weight: 600;
        text-transform: uppercase;
        letter-spacing: 0.05em;
        color: var(--text-light);
        margin-bottom: 8px;
        padding-left: 4px;
    }

    /* Nav List */
    .nav-list {
        display: flex;
        flex-direction: column;
        gap: 6px;
        width: 100%;
    }

    .nav-item {
        width: 100%;
    }

    /* Nav Links in Mobile */
    .nav-link {
        display: flex;
        align-items: center;
        justify-content: space-between;
        width: 100%;
        padding: 10px 14px;
        border-radius: 12px;
        background: var(--bg-page);
        border: 1px solid var(--border-soft);
        font-size: 0.95rem;
        font-weight: 500;
        color: var(--text-main);
        transition: all 0.2s cubic-bezier(0.16, 1, 0.3, 1);
    }

    .nav-link-main {
        display: flex;
        align-items: center;
        gap: 12px;
    }

    .nav-icon {
        width: 36px;
        height: 36px;
        border-radius: 9px;
        background: #ffffff;
        display: flex;
        align-items: center;
        justify-content: center;
        font-size: 0.92rem;
        color: var(--primary);
        box-shadow: 0 2px 5px rgba(0, 0, 0, 0.04);
        flex-shrink: 0;
        transition: all 0.2s ease;
    }

    .nav-text {
        font-size: 0.95rem;
    }

    .nav-arrow {
        display: inline-block;
        font-size: 0.75rem;
        color: var(--text-light);
        transition: transform 0.2s ease, color 0.2s ease;
    }

    .nav-link:hover,
    .nav-link:active {
        background: var(--primary-light);
        border-color: rgba(78, 159, 142, 0.35);
        color: var(--primary-dark);
        transform: translateX(2px);
    }

    .nav-link:hover .nav-icon,
    .nav-link:active .nav-icon {
        background: var(--primary);
        color: #ffffff;
    }

    .nav-link:hover .nav-arrow,
    .nav-link:active .nav-arrow {
        color: var(--primary);
        transform: translateX(3px);
    }

    /* Active Link in Mobile */
    .nav-link.active {
        background: var(--primary-light);
        border-color: rgba(78, 159, 142, 0.45);
        color: var(--primary-dark);
        font-weight: 600;
    }

    .nav-link.active .nav-icon {
        background: var(--primary);
        color: #ffffff;
    }

    .nav-link.active .nav-arrow {
        color: var(--primary);
    }

    /* Admin Link in Mobile */
    .nav-item-admin {
        margin-top: 6px;
        padding-top: 8px;
        border-top: 1px dashed var(--border-color);
    }

    .nav-link-admin {
        background: #ffffff;
        border-color: rgba(255, 138, 128, 0.25);
        color: var(--secondary-dark);
    }

    .admin-nav-icon {
        color: var(--secondary-dark);
    }

    .nav-link-admin:hover,
    .nav-link-admin.active {
        background: var(--secondary-light);
        border-color: var(--secondary);
        color: var(--secondary-dark);
    }

    .nav-link-admin:hover .admin-nav-icon,
    .nav-link-admin.active .admin-nav-icon {
        background: var(--secondary);
        color: #ffffff;
    }

    .nav-link-admin:hover .nav-arrow,
    .nav-link-admin.active .nav-arrow {
        color: var(--secondary-dark);
    }

    /* Menu Footer */
    .nav-mobile-footer {
        display: flex;
        align-items: center;
        justify-content: center;
        gap: 6px;
        margin-top: 14px;
        padding-top: 12px;
        border-top: 1px solid var(--border-soft);
        font-size: 0.78rem;
        color: var(--text-light);
        text-align: center;
    }

    .nav-mobile-footer i {
        color: var(--primary);
    }

    /* Layout Grids on Tablet */
    .translate-grid {
        grid-template-columns: 1fr;
    }
    .grid-4, .grid-3 {
        grid-template-columns: repeat(2, 1fr);
    }
    .footer-grid {
        grid-template-columns: 1fr 1fr;
    }
}

/* Phones & Small Screens (< 680px) */
@media (max-width: 680px) {
    .grid-2, .grid-3, .grid-4 {
        grid-template-columns: 1fr;
    }
    .footer-grid {
        grid-template-columns: 1fr;
    }
    .wotd-card {
        flex-direction: column;
        align-items: flex-start;
    }
    .hero-title {
        font-size: 1.7rem;
    }
    .dict-word-main {
        font-size: 1.8rem;
    }
}

/* Content Search Box (Articles & Conversations) */
.content-search-wrapper {
    max-width: 620px;
    margin: 0 auto 28px;
    position: relative;
}

.content-search-form {
    display: flex;
    align-items: center;
    background: #ffffff;
    border: 1.5px solid var(--border-color);
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    padding: 5px 6px 5px 18px;
    transition: all 0.2s ease;
}

.content-search-form:focus-within {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(78, 159, 142, 0.18), var(--shadow-md);
}

.content-search-icon-left {
    color: var(--text-light);
    font-size: 1.05rem;
    margin-right: 10px;
    display: flex;
    align-items: center;
}

.content-search-input {
    flex: 1;
    min-width: 0;
    border: none;
    background: transparent;
    font-size: 1rem;
    font-family: inherit;
    color: var(--text-main);
    padding: 8px 4px;
    min-height: 44px;
    outline: none;
}

.content-search-input::placeholder {
    color: var(--text-light);
}

.content-search-clear {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--text-light);
    padding: 8px;
    margin-right: 4px;
    border-radius: 50%;
    font-size: 1.05rem;
    text-decoration: none;
    transition: color 0.15s ease, transform 0.15s ease;
}

.content-search-clear:hover {
    color: var(--secondary-dark);
    transform: scale(1.1);
}

.content-search-btn {
    border-radius: var(--radius-full);
    padding: 9px 20px;
    font-size: 0.92rem;
    font-weight: 600;
    flex-shrink: 0;
}

.content-search-status {
    display: flex;
    align-items: center;
    justify-content: space-between;
    flex-wrap: wrap;
    gap: 12px;
    background: var(--primary-light);
    border: 1px solid rgba(78, 159, 142, 0.25);
    border-radius: var(--radius-md);
    padding: 12px 18px;
    margin-bottom: 28px;
    font-size: 0.95rem;
    color: var(--text-main);
}

.content-search-status strong {
    color: var(--primary-dark);
}

.content-search-empty {
    text-align: center;
    padding: 48px 20px;
    background: #ffffff;
    border: 1px solid var(--border-soft);
    border-radius: var(--radius-lg);
    box-shadow: var(--shadow-sm);
    margin: 20px 0;
}

.content-search-empty-icon {
    font-size: 3rem;
    color: var(--text-light);
    margin-bottom: 14px;
}

.content-search-empty-title {
    font-size: 1.25rem;
    font-weight: 700;
    color: var(--text-main);
    margin-bottom: 8px;
}

.content-search-empty-desc {
    color: var(--text-muted);
    font-size: 0.95rem;
    margin-bottom: 20px;
}

@media (max-width: 680px) {
    .content-search-wrapper {
        margin-bottom: 22px;
    }
    .content-search-form {
        padding: 4px 5px 4px 14px;
    }
    .content-search-input {
        font-size: 0.95rem;
    }
    .content-search-btn span.btn-text {
        display: none;
    }
    .content-search-btn {
        padding: 8px 14px;
    }
    .content-search-status {
        flex-direction: column;
        align-items: flex-start;
    }
}

/* Prevent body scroll when mobile menu is open */
body.nav-open {
    overflow: hidden;
}

/* Adjacent Words Bar Responsive Styles */
@media (max-width: 768px) {
    .adjacent-words-bar {
        padding: 16px 14px;
        margin: 24px 0 32px;
    }

    .adj-nav-inner {
        display: grid;
        grid-template-columns: 1fr 1fr;
        gap: 10px;
        align-items: stretch;
    }

    .adj-nav-prev {
        grid-column: 1;
        justify-content: stretch;
    }

    .adj-nav-next {
        grid-column: 2;
        justify-content: stretch;
    }

    .adj-nav-center {
        grid-column: 1 / -1;
        order: 3;
        margin-top: 4px;
        text-align: center;
    }

    .adj-link {
        max-width: 100%;
        padding: 10px 12px;
    }

    .adj-browse-btn {
        width: 100%;
        justify-content: center;
    }
}

@media (max-width: 480px) {
    .adjacent-words-bar {
        padding: 12px 10px;
    }

    .adj-link {
        padding: 8px 10px;
    }

    .adj-tag {
        font-size: 0.74rem;
        gap: 4px;
    }

    .adj-word {
        font-size: 0.95rem;
    }

    .adj-desc {
        font-size: 0.78rem;
    }
}