@import url("/static/css/base.css");

:root {
    --secondary-color: #f9fafb;
    --accent-color: #f59e0b;
    --text-color: #1f2937;
    --heading-color: #111827;
    --border-color: #d1d5db;
    --card-bg: #ffffff;
    --shadow-light: rgba(0, 0, 0, 0.05);
    --shadow-medium: rgba(0, 0, 0, 0.1);
    --font-primary: 'Inter', 'LXGW WenKai GB', sans-serif;
    --font-body: 'Inter', 'LXGW WenKai GB', sans-serif;
    --border-radius-sm: 4px;
    --border-radius-md: 8px;
    --border-radius-lg: 16px
}

html {
    box-sizing: border-box;
    font-size: 16px;
    scroll-behavior: smooth;
    overflow: auto
}

*,
:after,
:before {
    box-sizing: inherit
}

body {
    font-family: var(--font-body);
    line-height: 1.7;
    color: var(--text-color);
    background-color: var(--secondary-color);
    margin: 0;
    padding: 0;
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    -webkit-font-smoothing: antialiased;
    -moz-osx-font-smoothing: grayscale
}

h1,
h2,
h3,
h4,
h5,
h6 {
    font-family: var(--font-primary);
    color: var(--heading-color);
    margin-top: 1.5em;
    margin-bottom: .6em;
    line-height: 1.3;
    font-weight: 400
}

/* Tooltip styles */
.tooltip {
    position: absolute;
    background-color: #333;
    color: #fff;
    padding: 10px 15px;
    border-radius: 8px;
    z-index: 1000;
    font-size: 14px;
    line-height: 1.7;
    max-width: 320px;
    pointer-events: none;
    box-shadow: 0 4px 15px rgba(0,0,0,0.2);
    visibility: hidden;
    opacity: 0;
    transform: translateY(-10px);
    transition: opacity 0.2s ease, transform 0.2s ease, visibility 0.2s;
}

.tooltip.active {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
}

.tooltip::after {
    content: '';
    position: absolute;
    left: 50%;
    bottom: -5px;
    transform: translateX(-50%);
    border-width: 5px;
    border-style: solid;
    border-color: #333 transparent transparent transparent;
}

.tooltip.tooltip-bottom::after {
    top: -5px;
    bottom: auto;
    border-color: transparent transparent #333 transparent;
}

.tooltip div {
    margin-bottom: 5px;
}

.tooltip div:last-child {
    margin-bottom: 0;
}

.tooltip strong {
    color: color-mix(in srgb, color-mix(in srgb, var(--accent-color) 70%, var(--primary-color-alt) 50%), white 40%);
    margin-right: 3px;
    font-weight: 600 !important;
}

.tooltip i {
    font-size: 12px;
}

a {
    color: var(--primary-color);
    text-decoration: none;
    transition: color .2s ease
}

.main-content {
    flex-grow: 1;
    padding: 2.5rem 1.5rem
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 1.5rem
}

.main-char-display-card {
    display: flex;
    flex-wrap: wrap;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg, 12px);
    box-shadow: var(--shadow-default, 0 4px 12px rgba(0, 0, 0, .1));
    padding: var(--spacing-lg, 1.5rem);
    gap: var(--spacing-xl, 2rem);
    margin-bottom: var(--spacing-xl, 2rem);
    align-items: center
}

.main-char-display-card .animation-container {
    flex: 1 1 100px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 1rem;
    min-width: 200px
}

.main-char-display-card .stroke-animation {
    background-color: var(--background-color, #f9fafb);
    border: 1px solid var(--border-color-light, #e5e7eb);
    border-radius: var(--border-radius-md, 8px);
    width: 100%;
    max-width: 220px;
    aspect-ratio: 1/1;
    box-shadow: inset 0 2px 4px rgba(0, 0, 0, .05);
    display: flex
}

.main-char-display-card .animation-controls {
    display: flex;
    gap: .75rem
}

.main-char-display-card .char-metadata {
    flex: 2 1 0px;
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
    width: 100%;
    align-items: center;
    text-align: center;
}

.character-title-main {
    font-family: var(--font-headings);
    font-size: 4rem;
    color: var(--primary-color-dark);
    margin: 0;
    line-height: 1.1;
    margin-bottom: 0.5rem;
}

.traditional-display {
    font-size: 2rem;
    color: var(--text-color);
    margin-bottom: 0.25rem;
    opacity: 0.6;
    line-height: 1;
}

.trad-value {
    font-family: var(--font-primary);
    font-weight: 400;
}

.pinyin-display {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    margin-bottom: 1rem;
}

.pinyin-text {
    font-size: 1.5rem;
    font-weight: 500;
    color: var(--text-color);
}

.pinyin-audio-btn {
    background: none;
    border: none;
    color: var(--primary-color);
    cursor: pointer;
    font-size: 1.2rem;
    padding: 0.25rem;
    transition: transform 0.2s;
}

.pinyin-audio-btn:hover {
    transform: scale(1.1);
}

.char-badges {
    display: flex;
    flex-wrap: wrap;
    gap: 0.75rem;
    justify-content: center;
    margin-top: 0.5rem;
}

.badge {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 0.5rem 1rem;
    font-size: 0.9rem;
    color: var(--text-color);
    box-shadow: 0 1px 2px var(--shadow-light);
    min-width: 70px;
}

.badge-label {
    font-weight: 600;
    margin-right: 0;
    margin-bottom: 0.25rem;
    color: var(--heading-color);
    text-transform: uppercase;
    font-size: 0.7rem;
    opacity: 0.7;
    line-height: 1;
}

.badge-value {
    font-weight: 700;
    color: var(--primary-color);
    font-size: 1.5rem;
    line-height: 1.1;
}



.character-header {
    display: flex;
    flex-wrap: wrap;
    gap: 2.5rem;
    padding: 2.5rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    box-shadow: 0 10px 30px -10px var(--shadow-medium);
    margin-bottom: 3rem;
    align-items: center
}

.character-display {
    flex: 1 1 320px;
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-width: 320px;
    padding: 1rem
}

.character-title {
    font-size: 3.5rem;
    margin-top: 0;
    margin-bottom: .75rem;
    color: var(--heading-color);
    font-weight: 700;
    line-height: 1.2
}

.pinyin-display {
    font-size: 1.8rem;
    color: var(--text-color);
    margin-bottom: 1rem;
    display: flex;
    align-items: center;
    font-weight: 300
}

.pinyin-audio-btn {
    background: 0 0;
    border: none;
    color: var(--primary-color);
    font-size: 1.5rem;
    margin-left: .75rem;
    cursor: pointer;
    padding: .3rem;
    transition: color .2s ease, transform .2s ease
}

.pinyin-audio-btn:hover {
    color: var(--primary-hover);
    transform: scale(1.1)
}

.animation-container,
.word-animations-container {
    background-color: var(--secondary-color);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.5rem;
    display: flex;
    flex-direction: column;
    align-items: center;
    box-shadow: inset 0 2px 4px var(--shadow-light);
    width: 100% !important;
    max-width: 100% !important
}

.stroke-animation {
    width: 100%;
    max-width: 300px;
    height: auto;
    margin-bottom: 1rem;
    background-color: #fff;
    border-radius: var(--border-radius-sm);
    padding: 10px;
    box-shadow: 0 2px 8px var(--shadow-light)
}

.animation-controls,
.char-animation-controls,
.word-controls {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem;
    justify-content: center;
    margin-top: 1rem
}

.word-animations-container h4 {
    text-align: center;
    margin-bottom: 1.5rem;
    color: var(--heading-color);
    font-size: 1.25rem;
    font-weight: 600
}

.character-animations-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
    gap: 1rem;
    width: 100%;
    margin-bottom: 1.5rem;
    justify-content: center;
    justify-items: center
}

.single-char-animation {
    display: flex;
    flex-direction: column;
    align-items: center;
    padding: 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--card-bg);
    box-shadow: 0 2px 6px var(--shadow-light);
    transition: transform .2s ease, box-shadow .2s ease;
    width: 100%;
    max-width: 220px
}

.single-char-animation:hover {
    transform: translateY(-2px);
    box-shadow: 0 4px 10px var(--shadow-medium)
}

.single-char-animation .char-label {
    font-size: 1.5rem;
    font-weight: 500;
    margin-bottom: .75rem;
    color: var(--heading-color);
    text-align: center
}

.single-char-animation .stroke-animation {
    width: 100%;
    max-width: 180px;
    height: 180px;
    background-color: #fff;
    padding: 5px;
    margin: 0 auto
}

.character-info-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
    gap: 2rem
}

.info-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    box-shadow: 0 5px 15px -5px var(--shadow-medium);
    padding: 2rem;
    transition: transform .3s ease, box-shadow .3s ease;
    border-top: 4px solid var(--primary-color);
    overflow: hidden
}

.main-components-card,
.similar-chars-card {
    order: 1
}

.examples-card,
.examples-section {
    order: 2
}

.info-card:hover {
    box-shadow: 0 10px 25px -8px var(--shadow-medium)
}

.card-title {
    font-size: 1.5rem;
    font-weight: 500;
    margin-top: 0;
    margin-bottom: 1rem;
    border-bottom: 1px solid var(--border-color);
    padding-bottom: .75rem;
    display: flex;
    align-items: center;
    color: var(--heading-color)
}

.card-title .fas {
    margin-right: .85rem;
    color: var(--primary-color);
    font-size: 1.3rem;
    width: 24px;
    text-align: center
}

.radical-display {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    margin-bottom: 1.5rem;
    padding: 1rem;
    background-color: var(--secondary-color);
    border-radius: var(--border-radius-sm)
}

.radical-info p {
    margin: .3rem 0;
    font-size: 1.05rem
}

.components-list .component-char,
.examples-list .example-char {
    font-weight: 600;
    font-size: 1.15em;
    color: var(--primary-color);
    background-color: #e8f5e9;
    padding: .1em .4em;
    border-radius: var(--border-radius-sm)
}

.word-characters-grid {
    display: grid;
    grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
    gap: 1.25rem
}

.word-character-item-link {
    display: block;
    text-decoration: none;
    color: inherit;
    border-radius: var(--border-radius-md);
    transition: transform .2s ease, box-shadow .2s ease
}

.example-item {
    background-color: var(--card-bg);
    padding: 1.25rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    border-left: 3px solid transparent;
    box-shadow: var(--shadow-light);
    display: flex;
    flex-direction: column;
    gap: .75rem;
    height: 100%;
    transition: border-color .2s ease, border-left-color .2s ease, box-shadow .2s ease, transform .2s ease
}

.word-character-item-link:hover .example-item {
    transform: translateY(-3px);
    box-shadow: var(--shadow-medium);
    border-color: var(--primary-color);
    border-left-color: var(--primary-color)
}

.word-char-header {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .15rem;
    transition: border-bottom-color .2s ease
}

.word-character-item-link:hover .word-char-header {
    border-bottom-color: var(--primary-color)
}

.word-char-display {
    font-size: 2.2rem;
    font-weight: 500;
    color: var(--heading-color);
    line-height: 1.1;
    transition: color .2s ease
}

.word-character-item-link:hover .word-char-display {
    color: var(--primary-hover)
}

.word-char-pinyin {
    font-size: .9rem;
    color: var(--text-color);
    font-style: italic
}

.word-char-definitions {
    display: flex;
    flex-direction: column;
    gap: .4rem;
    align-items: flex-start
}

.components-list {
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: .75rem;
    width: 100%
}

.components-list .components {
    display: flex;
    flex-wrap: wrap;
    justify-content: center;
    gap: var(--spacing-sm, .5rem)
}

.components {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem
}

.component-link {
    text-decoration: none;
    color: inherit;
    display: inline-block
}

.component {
    font-family: var(--font-body);
    font-size: 1.75rem;
    color: var(--primary-color);
    background-color: var(--secondary-color);
    padding: .5rem .85rem;
    border-radius: var(--border-radius-md);
    border: 1px solid #b2dfdb;
    box-shadow: 0 1px 3px rgba(0, 0, 0, .05);
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease;
    line-height: 1;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 40px;
    text-align: center
}

.component:hover {
    transform: translateY(-2px) scale(1.05);
    box-shadow: 0 3px 8px rgba(0, 0, 0, .1);
    background-color: var(--primary-color);
    color: var(--card-bg)
}

.similar-chars-card .card-content {
    display: flex;
    flex-direction: column;
    gap: 1rem
}

.similar-description {
    font-size: 1rem;
    color: var(--text-color);
    margin-bottom: .5rem;
    padding: .5rem 0;
    border-bottom: 1px dashed var(--border-color);
    font-style: italic
}

.similar-chars-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(60px, 1fr));
    gap: .75rem;
    justify-content: start
}

.similar-char {
    font-family: var(--font-body);
    font-size: 2.2rem;
    font-weight: 400;
    color: var(--text-color);
    background-color: var(--secondary-color);
    padding: .6rem .5rem;
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    box-shadow: 0 1px 2px var(--shadow-light);
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease, color .2s ease;
    text-align: center;
    line-height: 1.2;
    display: flex;
    align-items: center;
    justify-content: center
}

.similar-char:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--shadow-light);
    color: var(--primary-hover);
    border-color: var(--primary-color)
}

.details-layout .info-card .card-title {
    border-bottom: none;
    padding-bottom: 0;
}

.definitions-list {
    display: flex;
    flex-direction: column;
    gap: .55rem;
    font-size: 1rem;
}

.definition-line {
    display: flex;
    flex-wrap: wrap;
    align-items: baseline;
    gap: .5rem;
    padding: .35rem 0 .3rem 0;
    background: transparent;
    line-height: 1.5;
    font-size: .95rem;
    position: relative;
    border: none;
}

.definition-line + .definition-line {
    border-top: 1px solid var(--border-color);
}

.def-pinyin {
    font-weight: 500;
    letter-spacing: .5px;
    line-height: 1.2;
    color: var(--primary-color-dark, #1d4ed8);
    margin-right: .4rem;
    font-size: 18px;
}

.def-pos {
    font-style: italic;
    color: var(--text-muted, #555);
    margin-right: .5rem;
    font-size: .85rem;
    letter-spacing: .5px;
}

.def-gloss {
    flex: 1 1 100%;
    margin-left: calc(.5rem + 0px);
}

/* Etymology Section Styles */
.etymology-section {
    margin-top: 1.25rem;
    padding-top: 1rem;
}

.etymology-title {
    display: flex;
    align-items: center;
    gap: .5rem;
    font-size: .95rem;
    font-weight: 600;
    color: var(--heading-color);
    margin: 0 0 .75rem 0;
}

.etymology-title i {
    color: var(--primary-color, #3b82f6);
    font-size: .9rem;
}

.etymology-type {
    font-size: .75rem;
    font-weight: 500;
    color: #fff;
    background: var(--primary-color, #3b82f6);
    padding: .15rem .5rem;
    border-radius: 12px;
    margin-left: auto;
    text-transform: capitalize;
}

.etymology-content {
    font-size: .9rem;
    line-height: 1.6;
}

.etymology-hint {
    margin: 0 0 .75rem 0;
    color: var(--text-color);
    font-style: italic;
}

/* Inline character links in etymology text */
.inline-char-link {
    color: var(--primary-color, #3b82f6);
    text-decoration: none;
    font-style: normal;
    cursor: pointer;
    transition: color 0.2s ease;
}

.inline-char-link:hover {
    color: var(--primary-hover, #2563eb);
    text-decoration: underline;
}

.etymology-hint-long {
    margin: 0;
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1rem;
}

.etymology-text {
    margin: 0;
    color: var(--text-color);
    font-size: 0.95rem;
    line-height: 1.6;
}

.ai-indicator {
    display: inline;
    margin-left: 0.25rem;
    color: #9ca3af;
    font-size: 0.85rem;
    cursor: help;
    transition: color 0.2s ease;
    opacity: 0.7;
}

.ai-indicator:hover {
    color: #6b7280;
    opacity: 1;
}

.ai-indicator i {
    font-size: 0.85rem;
}

.etymology-components {
    display: flex;
    flex-wrap: wrap;
    gap: .75rem 1.5rem;
}

.etymology-component {
    display: flex;
    align-items: center;
    gap: .4rem;
}

.component-label {
    font-size: .85rem;
    color: var(--text-muted, #666);
    font-weight: 500;
}

.component-char {
    font-size: 1.4rem;
    padding: .2rem .5rem;
}



.main-components-card {
    display: flex;
    flex-direction: column
}

.main-components-content {
    margin-top: auto;
    margin-bottom: auto
}

.radical-display {
    display: flex;
    align-items: center;
    gap: 1.5rem;
    flex-wrap: wrap
}

.radical-char {
    font-family: var(--font-body);
    font-size: 3rem;
    color: var(--text-color);
    background-color: var(--secondary-color);
    padding: .75rem 1.25rem;
    border-radius: var(--border-radius-lg);
    border: 2px solid var(--border-color);
    box-shadow: 0 1px 2px var(--shadow-light);
    line-height: 1.2;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    min-width: 60px;
    transition: transform .2s ease, box-shadow .2s ease, background-color .2s ease
}

.radical-char:hover {
    background: var(--secondary-color);
    transform: translateY(-3px);
    box-shadow: 0 5px 15px var(--shadow-light);
    color: var(--primary-hover);
    border-color: var(--primary-color)
}

.radical-info {
    flex-grow: 1
}

.radical-meaning {
    font-size: 1.1rem;
    color: var(--text-color);
    line-height: 1.6
}

.info-row {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem
}

.info-row>.info-card {
    flex: 1 1 calc(50% - .5rem);
    min-width: 300px;
    margin-bottom: 0 !important
}

.info-row>.info-card:only-child {
    flex-basis: 100%
}

@media (max-width:992px) {
    .info-row {
        flex-direction: column;
        gap: 1.5rem
    }

    .info-row>.info-card {
        flex-basis: 100%;
        min-width: 100%;
        margin-bottom: 0 !important
    }

    .info-row>.info-card:last-child {
        margin-bottom: 0 !important
    }

    .info-row .main-components-card {
        order: 1
    }

    .info-row .examples-card {
        order: 2
    }
}

@media (max-width:768px) {
    .info-row {
        gap: 1rem
    }

    .info-row>.info-card {
        min-width: 100%
    }
}

.examples-section {
    width: 100%
}

.examples-card .card-title {
    font-size: 1.6rem;
    margin-bottom: 1.5rem
}

.examples-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1.5rem
}

.example-item {
    background-color: var(--card-bg-lighter, #fdfdfd);
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    padding: 1.25rem;
    box-shadow: var(--shadow-subtle);
    transition: transform .2s ease-out, box-shadow .2s ease-out;
    display: flex;
    flex-direction: column;
    gap: .5rem
}

.example-item-link {
    display: block;
    text-decoration: none;
    color: inherit
}

.example-item-link:hover .example-item {
    transform: translateY(-3px) scale(1.03);
    box-shadow: var(--shadow-lifted)
}

.example-chinese {
    font-family: var(--font-body);
    font-size: 2.2rem;
    color: var(--primary-color);
    line-height: 1.3;
    margin-bottom: .25rem;
    text-align: center
}

.example-pinyin {
    font-family: var(--font-sans-serif);
    font-size: 1rem;
    color: var(--text-color-light);
    font-style: italic;
    margin-bottom: .25rem
}

.example-definition {
    font-family: var(--font-sans-serif);
    font-size: .95rem;
    color: var(--text-color);
    line-height: 1.5;
    flex-grow: 1
}

.control-btn {
    background-color: var(--primary-color);
    color: #fff;
    border: none;
    padding: .8rem 1.5rem;
    border-radius: var(--border-radius-md);
    cursor: pointer;
    font-size: 1rem;
    font-weight: 600;
    font-family: var(--font-primary);
    transition: all .2s ease;
    display: inline-flex;
    align-items: center;
    gap: .5rem;
    box-shadow: 0 2px 5px rgba(0, 0, 0, .1);
    text-transform: capitalize
}

.control-btn:hover {
    background-color: var(--primary-hover);
    transform: translateY(-2px);
    box-shadow: 0 4px 10px rgba(0, 0, 0, .15)
}

.control-btn:active {
    transform: translateY(0) scale(.98);
    box-shadow: 0 1px 3px rgba(0, 0, 0, .1)
}

.control-btn .fas {
    font-size: .95em
}

.animate-btn
{
    background-color: var(--primary-color);
}

.animate-btn:hover
{
    background-color: color-mix(in srgb, var(--primary-color), black 20%)
}

.practice-btn {
    background-color: var(--primary-color-alt)
}

.practice-btn:hover {
    background-color: color-mix(in srgb, var(--primary-color-alt), black 20%)
}

.details-layout {
    margin-bottom: 2rem;
}

.single-char-layout {
    display: flex;
    flex-wrap: wrap;
    gap: 2rem;
    margin-bottom: 2rem
}

.single-char-main-column {
    flex: 2 1 500px;
    min-width: 300px;
    padding: 0 !important;
}

.single-char-main-column .character-display,
.single-char-main-column .character-header,
.single-char-main-column .main-char-display-card {
    width: 100%;
    height: 100%;
    margin-top: 0;
    margin-bottom: 0;
    box-shadow: none;
    padding: 0;
}

.single-char-main-column .main-char-display-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    box-shadow: var(--shadow-default, 0 4px 12px rgba(0, 0, 0, .1));
    padding: 1.5rem
}

.single-char-definition-column {
    flex: 1 1 300px;
    min-width: 280px
}

.single-char-definition-column .definitions-card {
    height: 100%;
    margin-top: 0;
    display: flex;
    flex-direction: column;
    padding-bottom: 1rem;
}

.single-char-definition-column .definitions-card .card-content {
    flex: 1;
    display: flex;
    flex-direction: column;
}

.single-char-definition-column .definitions-card .definitions-list {
    flex: 1;
}

.single-char-definition-column .definitions-card .etymology-section {
    margin-top: auto;
}

@media (max-width:1200px) {
    .character-info-grid {
        display: flex;
        flex-direction: column;
        gap: 1.5rem
    }

    .single-char-layout {
        gap: 1.5rem
    }

    .examples-grid {
        grid-template-columns: repeat(auto-fill, minmax(110px, 1fr));
        gap: 1.25rem
    }

    .word-characters-grid {
        grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
        gap: 1rem
    }
}

@media (max-width:992px) {
    .character-header {
        flex-direction: column;
        align-items: center;
        text-align: center;
        gap: 1.5rem;
        padding: 2rem 1.5rem
    }

    .pinyin-display {
        justify-content: center
    }

    .single-char-layout {
        gap: 1.5rem
    }

    .single-char-definition-column,
    .single-char-main-column {
        flex: 1 1 100%;
        min-width: 100%
    }

    .single-char-definition-column .definitions-card {
        height: auto
    }

    .character-info-grid {
        display: flex;
        flex-direction: column;
        gap: 1.5rem
    }

    .main-components-card,
    .similar-chars-card {
        order: 1
    }

    .examples-card,
    .examples-section {
        order: 2
    }

    .examples-grid {
        grid-template-columns: repeat(auto-fill, minmax(100px, 1fr));
        gap: 1rem
    }

    .word-characters-grid {
        grid-template-columns: repeat(auto-fit, minmax(200px, 1fr))
    }
}

@media (max-width:768px) {
    .character-title {
        font-size: 2.8rem
    }

    .character-title-main {
        font-size: 2.5rem
    }

    .main-content {
        padding: 1.5rem 1rem
    }

    .container {
        padding: 0 1rem
    }

    .character-header {
        padding: 1.5rem;
        gap: 1rem
    }

    .main-char-display-card {
        flex-direction: column;
        gap: 1.5rem;
        padding: 1.25rem
    }

    .main-char-display-card .animation-container {
        min-width: 100%;
        max-width: 250px;
        margin: 0 auto
    }

    .stroke-animation {
        max-width: 250px
    }

    .animation-controls,
    .char-animation-controls,
    .word-controls {
        flex-wrap: wrap;
        justify-content: center;
        gap: .5rem
    }

    .control-btn {
        flex: 1 1 auto;
        min-width: 120px;
        max-width: 200px
    }

    .examples-grid {
        grid-template-columns: repeat(auto-fill, minmax(90px, 1fr));
        gap: .75rem
    }

    .word-characters-grid {
        grid-template-columns: 1fr;
        gap: 1rem
    }

    .similar-chars-grid {
        grid-template-columns: repeat(auto-fill, minmax(50px, 1fr));
        gap: .5rem
    }

    .word-animations-container {
        padding: 1rem
    }

    .word-animations-container h4 {
        font-size: 1.1rem;
    }
}

@media (max-width:480px) {
    html {
        font-size: 15px
    }

    .main-content {
        padding: 1rem
    }

    .container {
        padding: 0 .5rem
    }

    .character-header {
        padding: 1rem
    }

    .character-title {
        font-size: 2.2rem
    }

    .character-title-main {
        font-size: 2rem
    }

    .pinyin-display {
        font-size: 1.5rem
    }

    .info-card {
        padding: 1.25rem
    }

    .card-title {
        font-size: 1rem
    }

    .main-char-display-card {
        padding: 1rem;
        gap: 1rem
    }

    .main-char-display-card .animation-container {
        max-width: 200px
    }

    .stroke-animation {
        max-width: 200px
    }

    .control-btn {
        padding: .6rem 1rem;
        font-size: .85rem;
        width: 100%;
        justify-content: center;
        margin-bottom: .5rem
    }

    .animation-controls,
    .char-animation-controls,
    .word-controls {
        flex-direction: column;
        gap: .5rem
    }

    .single-char-animation .stroke-animation {
        width: 120px;
        height: 120px;
        max-width: 120px
    }

    .single-char-animation .char-label {
        font-size: 1.2rem;
        margin-bottom: .5rem
    }

    .single-char-animation .stroke-animation {
        max-width: 120px;
        height: 120px
    }

    .word-animations-container {
        padding: .75rem
    }

    .word-animations-container h4 {
        font-size: 1rem;
    }

    .examples-grid {
        grid-template-columns: repeat(auto-fill, minmax(80px, 1fr));
        gap: .5rem
    }

    .example-chinese {
        font-size: 1.8rem
    }

    .example-pinyin {
        font-size: .85rem
    }

    .example-definition {
        font-size: .8rem
    }

    .similar-chars-grid {
        grid-template-columns: repeat(auto-fill, minmax(45px, 1fr));
        gap: .4rem
    }

    .similar-char {
        font-size: 1.8rem;
        padding: .4rem .3rem
    }

    .component {
        font-size: 1.5rem;
        padding: .4rem .6rem;
        min-width: 35px
    }

    .radical-char {
        font-size: 2.5rem;
        padding: .5rem .75rem;
        min-width: 50px
    }

    .radical-display {
        flex-direction: column;
        gap: 1rem;
        text-align: center
    }

    /* Old responsive overrides for removed definitions classes deleted */
}

@media (max-width:320px) {
    .main-content {
        padding: .75rem
    }

    .character-header {
        padding: .75rem
    }

    .info-card {
        padding: 1rem
    }

    .character-title {
        font-size: 1.8rem
    }

    .character-title-main {
        font-size: 1.6rem
    }

    .main-char-display-card {
        padding: .75rem
    }

    .stroke-animation {
        max-width: 160px
    }

    .main-char-display-card .animation-container {
        max-width: 160px
    }

    .examples-grid {
        grid-template-columns: repeat(auto-fill, minmax(70px, 1fr));
        gap: .4rem
    }

    .single-char-animation .char-label {
        font-size: 1rem;
        margin-bottom: .4rem
    }

    .single-char-animation .stroke-animation {
        width: 100px;
        height: 100px;
        max-width: 100px
    }

    .word-animations-container {
        padding: .5rem
    }

    .word-animations-container h4 {
        font-size: .9rem;
    }
}

/* Example Sentences Section */
.example-sentences-section {
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.subsection-title {
    font-size: 1rem;
    color: var(--heading-color);
    margin-bottom: 1rem;
    margin-top: 0.5rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.5rem;
    text-transform: uppercase;
    letter-spacing: 0.05em;
    opacity: 0.8;
    cursor: pointer;
    user-select: none;
}

.subsection-title .title-text {
    display: flex;
    align-items: center;
    gap: 0.5rem;
}

.toggle-indicator {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--text-color);
    opacity: 0.7;
}

.toggle-icon {
    transition: transform 0.3s ease;
}

.toggle-icon.collapsed {
    transform: rotate(-90deg);
}

.sentences-list {
    display: flex;
    flex-direction: column;
    gap: 0;
    max-height: 2000px; /* Large enough to fit content */
    opacity: 1;
    transition: max-height 0.5s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.4s ease;
    overflow: hidden;
}

.sentences-list.no-transition {
    transition: none !important;
}

.sentences-list.collapsed {
    max-height: 0;
    opacity: 0;
    /* display: none; Removed to allow animation */
}

.sentence-item {
    display: grid;
    grid-template-columns: 1.2fr 1fr;
    gap: 2rem;
    padding: 1.25rem 0;
    border-bottom: 1px solid var(--border-color-light, #e5e7eb);
    align-items: center;
}

.sentence-item:last-child {
    border-bottom: none;
    padding-bottom: 0;
}

.sentence-content {
    min-width: 0; /* Prevent overflow */
}

.sentence-meta {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 0;
}

.sentence-zh {
    font-size: 26px;
    color: var(--heading-color);
    margin: 0;
    font-family: var(--font-primary);
    line-height: 1.4;
    font-weight: 500;
}

.highlight-word {
    color: #2563eb;
    font-weight: inherit;
    background-color: transparent;
    padding: 0;
    border-radius: 0;
}

.sentence-pinyin {
    font-size: 1rem;
    color: #4b5563;
    margin: 0;
    font-style: normal;
    line-height: 1.4;
}

.sentence-en {
    font-size: 0.85rem;
    color: #9ca3af;
    margin: 0;
    line-height: 1.4;
}

@media (max-width: 768px) {
    .sentence-item {
        grid-template-columns: 1fr;
        gap: 0.5rem;
        align-items: flex-start;
    }
    
    .sentence-zh {
        font-size: 1.3rem;
        margin-bottom: 0.25rem;
    }
}

.sentence-en {
    font-size: 0.95rem;
    color: #6b7280;
    margin: 0;
}

/* Etymology Images Section */
.etymology-images-section {
    margin-top: 1rem;
    border-top: 1px solid var(--border-color);
    padding-top: 1.5rem;
}

.etymology-images-list {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
    gap: 1rem;
    margin-top: 1rem;
    transition: max-height 0.3s ease-out, opacity 0.3s ease-out, margin 0.3s ease;
    max-height: 5000px; /* Arbitrary large height */
    opacity: 1;
    overflow: hidden;
}

.etymology-images-list.collapsed {
    max-height: 0;
    opacity: 0;
    margin-top: 0;
}

.etymology-images-list.no-transition {
    transition: none !important;
}

.etymology-image-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    background-color: var(--secondary-color);
    border-radius: var(--border-radius-md);
    padding: 0.75rem;
    border: 1px solid var(--border-color);
    transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.etymology-image-item img {
    width: 100%;
    height: auto;
    aspect-ratio: 1/1;
    object-fit: contain;
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.5rem;
}

.etymology-svg-container {
    width: 100%;
    aspect-ratio: 1/1;
    display: flex;
    align-items: center;
    justify-content: center;
    border-radius: var(--border-radius-sm);
    margin-bottom: 0.5rem;
    overflow: hidden;
}

.etymology-svg-container svg {
    max-width: 100%;
    max-height: 100%;
    width: auto;
    height: auto;
}

.etymology-image-meta {
    text-align: center;
    font-size: 0.8rem;
    color: var(--text-color);
    width: 100%;
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
}

.etymology-image-type {
    display: block;
    font-weight: 600;
    color: var(--heading-color);
    font-size: 0.9rem;
}

.etymology-image-era {
    display: block;
    font-size: 0.75rem;
    color: #6b7280;
    line-height: 1.3;
}