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

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

/* Audio */
.audio-btn {
    width: 58px;
    height: 58px;
    border-radius: 50%;
    border: 2px solid var(--primary-color);
    background-color: var(--card-bg);
    color: var(--primary-color);
    font-size: 1.45rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.audio-btn:hover {
    background-color: var(--primary-color);
    color: var(--card-bg);
    transform: scale(1.05);
}

.audio-btn:active {
    transform: scale(0.95);
}

.audio-btn.playing {
    background-color: var(--primary-color);
    color: var(--card-bg);
    animation: pulse 1s infinite;
}

.audio-controls {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: 0.75rem;
    margin-bottom: 1.25rem;
}

.audio-hint {
    font-size: 1.05rem;
    color: var(--text-color);
    opacity: 0.6;
}

/* Base */
html {
    box-sizing: border-box;
    scroll-behavior: smooth;
}

*, :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;
}

/* Filter */
.filter-actions {
    display: flex;
    flex-direction: column;
    gap: 0.5rem;
}

.filter-btn {
    padding: 0.5rem 1rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.85rem;
    cursor: pointer;
    transition: all 0.2s ease;
    width: 100%;
}

.filter-btn:hover {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.filter-btn.primary {
    background-color: var(--accent-color);
    border-color: var(--accent-color);
    color: var(--card-bg);
}

.filter-btn.primary:hover {
    background-color: #d97706;
    border-color: #d97706;
}

.filter-checkbox {
    display: flex;
    flex-direction: row;
    flex-wrap: nowrap;
    align-items: center;
    padding: 0.3rem 0.35rem;
    border-radius: var(--border-radius-sm);
    cursor: pointer;
    transition: background-color 0.2s ease;
    font-size: 0.8rem;
    min-width: 0;
}

.filter-checkbox:hover {
    background-color: var(--card-bg);
}

.filter-checkbox .tone-icon-sm {
    flex-shrink: 0;
}

.filter-checkbox input[type="checkbox"] {
    flex-shrink: 0;
    width: 16px;
    height: 16px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.filter-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.25rem;
    margin-bottom: 1rem;
}

.filter-section {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    overflow: hidden;
}

.filter-section h3 {
    text-align: center;
    margin-bottom: 1rem;
    font-size: 1.1rem;
}

/* Hanzi */
.hanzi-display {
    text-align: center;
    margin-bottom: 1rem;
}

.hanzi-text {
    font-size: 4.2rem;
    font-weight: 400;
    color: var(--heading-color);
    font-family: 'LXGW WenKai GB', sans-serif;
    line-height: 1.2;
}

.hanzi-text.hidden {
    color: transparent;
    background-color: var(--border-color);
    border-radius: var(--border-radius-md);
    user-select: none;
}

/* Layout */
.main-content {
    flex-grow: 1;
    padding-top: 2.5rem;
}

.main-layout {
    display: flex;
    justify-content: center;
    align-items: flex-start;
}

.quiz-column {
    flex: 1;
    min-width: 0;
    max-width: 600px;
    position: relative;
}

.tonepairs-container {
    max-width: 650px;
    margin: 1rem auto;
    padding: 0;
    background-color: transparent;
    border-radius: 0;
    box-shadow: none;
}

/* Next */
.next-btn {
    padding: 0.6rem 1.2rem;
    border: none;
    border-radius: var(--border-radius-md);
    background-color: var(--primary-color);
    color: var(--card-bg);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: inline-flex;
    align-items: center;
    gap: 0.3rem;
    flex-shrink: 0;
    white-space: nowrap;
}

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

/* Quiz */
.quiz-card {
    background-color: var(--card-bg);
    border-radius: var(--border-radius-lg);
    border: 1px solid var(--border-color);
    padding: 1.8rem;
    margin-bottom: 1.2rem;
}

/* Result */
.result-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.9rem;
    background-color: var(--secondary-color);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    padding: 0.75rem 0.9rem;
}

.result-info {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    color: var(--text-color);
    min-width: 0;
    overflow: hidden;
}

.result-meaning {
    font-size: 1rem;
    opacity: 0.7;
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.result-pinyin {
    font-style: italic;
    font-size: 1.05rem;
    flex-shrink: 0;
}

.result-status {
    font-size: 1.05rem;
    font-weight: 700;
    flex-shrink: 0;
}

.result-status.correct {
    color: var(--correct-color);
}

.result-status.incorrect {
    color: var(--incorrect-color);
}

/* Score */
.score-actions {
    display: flex;
    align-items: center;
    gap: 0.25rem;
}

.score-correct {
    color: var(--correct-color);
}

.score-display {
    display: flex;
    align-items: center;
    justify-content: space-between;
    margin-bottom: 1rem;
    padding: 0.75rem 0.9rem;
    background-color: var(--card-bg);
    border-radius: var(--border-radius-md);
    border: 1px solid var(--border-color);
    font-size: 1.15rem;
    font-weight: 600;
}

.score-label {
    color: var(--text-color);
    margin-right: 0.5rem;
}

.score-percentage {
    color: var(--text-color);
    opacity: 0.7;
    margin-left: 0.5rem;
}

.score-reset-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.95rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
    opacity: 0.6;
}

.score-reset-btn:hover {
    color: var(--primary-color);
    border-color: var(--primary-color);
    opacity: 1;
}

.score-separator {
    color: var(--text-color);
    margin: 0 0.25rem;
}

.score-total {
    color: var(--text-color);
}

.score-values {
    display: flex;
    align-items: center;
    gap: 0.2rem;
}

/* Settings */
.settings-close-btn {
    width: 36px;
    height: 36px;
    border-radius: 50%;
    border: none;
    background-color: transparent;
    color: var(--text-color);
    font-size: 1.1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

.settings-close-btn:hover {
    background-color: var(--incorrect-color);
    color: var(--card-bg);
}

.settings-overlay {
    position: fixed;
    top: 60px;
    left: 0;
    right: 0;
    bottom: 0;
    background-color: rgba(0, 0, 0, 0.3);
    z-index: 100;
    opacity: 0;
    visibility: hidden;
    transition: opacity 0.3s ease, visibility 0.3s ease;
}

.settings-overlay.open {
    opacity: 1;
    visibility: visible;
}

.settings-panel {
    position: fixed;
    top: 60px;
    right: 0;
    width: 450px;
    max-width: 90vw;
    height: calc(100vh - 60px);
    background-color: var(--card-bg);
    box-shadow: -5px 0 25px var(--shadow-medium);
    z-index: 101;
    transform: translateX(100%);
    transition: transform 0.3s ease;
    overflow-y: auto;
    display: flex;
    flex-direction: column;
}

.settings-panel.open {
    transform: translateX(0);
}

.settings-panel .settings-section,
.settings-panel .filter-section {
    margin: 1rem;
}

.settings-panel-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    padding: 1rem 1.5rem;
    border-bottom: 1px solid var(--border-color);
    background-color: var(--secondary-color);
}

.settings-panel-header h2 {
    margin: 0;
    font-size: 1.25rem;
}

.settings-section {
    background-color: var(--secondary-color);
    border-radius: var(--border-radius-md);
    padding: 1rem;
    margin-bottom: 1rem;
}

.settings-section h3 {
    text-align: center;
    margin-bottom: 0.75rem;
    font-size: 1rem;
}

.settings-toggle-btn {
    width: 38px;
    height: 38px;
    border-radius: var(--border-radius-sm);
    border: 1px solid var(--border-color);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    cursor: pointer;
    transition: all 0.2s ease;
    display: flex;
    align-items: center;
    justify-content: center;
}

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

.speed-option {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 0.75rem;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    cursor: default;
}

.speed-select {
    padding: 0.35rem 0.5rem;
    border: 1px solid var(--border-color);
    border-radius: var(--border-radius-sm);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 0.9rem;
    cursor: pointer;
    accent-color: var(--primary-color);
}

.toggle-label {
    font-size: 0.9rem;
    color: var(--text-color);
}

.toggle-option {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    cursor: pointer;
    padding: 0.5rem;
    border-radius: var(--border-radius-sm);
    transition: background-color 0.2s ease;
}

.toggle-option:hover {
    background-color: var(--card-bg);
}

.toggle-option input[type="checkbox"] {
    width: 18px;
    height: 18px;
    cursor: pointer;
    accent-color: var(--primary-color);
}

/* Tone */
.tone-btn {
    padding: 0.55rem 0.3rem;
    border: 1.5px solid var(--border-color);
    border-radius: var(--border-radius-md);
    background-color: var(--card-bg);
    color: var(--text-color);
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
    transition: all 0.15s ease;
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: center;
    gap: 0.05rem;
    position: relative;
    min-width: 0;
}

.tone-btn:hover:not(:disabled) {
    border-color: var(--primary-color);
    color: var(--primary-color);
}

.tone-btn:disabled {
    cursor: not-allowed;
    opacity: 0.6;
}

.tone-btn.correct {
    background-color: var(--correct-color);
    border-color: var(--correct-color);
    color: var(--card-bg);
}

.tone-btn.incorrect {
    background-color: var(--incorrect-color);
    border-color: var(--incorrect-color);
    color: var(--card-bg);
}

.tone-btn.show-correct {
    background-color: var(--correct-color);
    border-color: var(--correct-color);
    color: var(--card-bg);
    animation: highlight 0.5s ease;
}

.tone-btn .tone-icon {
    display: inline-block;
}

.tone-icon {
    width: 29px;
    height: 19px;
    display: inline-block;
    flex-shrink: 0;
}

.tone-icon-sm {
    width: 24px;
    height: 17px;
    display: inline-block;
}

.tone-label {
    width: 100%;
    text-align: center;
    font-size: 0.65rem;
    opacity: 0.45;
    font-weight: 500;
    letter-spacing: 0.5px;
    margin-top: 0.1rem;
}

.tone-options-grid {
    display: grid;
    grid-template-columns: repeat(5, 1fr);
    gap: 0.6rem;
    margin-bottom: 1.2rem;
}

/* Typography */
h1, h2, h3 {
    font-family: var(--font-primary);
    color: var(--heading-color);
    margin-bottom: 0.6em;
    line-height: 1.3;
    font-weight: 600;
}

.tonepairs-header {
    text-align: center;
    margin-bottom: 1.25rem;
}

.tonepairs-header h1 {
    font-size: 1.8rem;
    color: var(--heading-color);
    margin-bottom: 0.15rem;
}

.tonepairs-subtitle {
    font-size: 1rem;
    color: var(--text-color);
    opacity: 0.55;
    margin: 0;
}

/* Animations */
@keyframes highlight {
    0%, 100% { transform: scale(1); }
    50% { transform: scale(1.1); }
}

@keyframes pulse {
    0% { box-shadow: 0 0 0 0 var(--primary-glow); }
    70% { box-shadow: 0 0 0 10px var(--primary-glow-transparent); }
    100% { box-shadow: 0 0 0 0 var(--primary-glow-transparent); }
}

/* Media Queries */
@media (max-width: 900px) {
    .filter-actions {
        flex-direction: row;
        flex-wrap: wrap;
    }

    .filter-btn {
        flex: 1;
        width: auto;
    }
}

@media (max-width: 768px) {
    .main-content {
        padding: 2rem 1rem;
    }
}

@media (max-width: 600px) {
    .audio-btn {
        font-size: 1.1rem;
        height: 44px;
        width: 44px;
    }

    .audio-controls {
        margin-bottom: 1rem;
    }

    .audio-hint {
        font-size: 0.8rem;
    }

    .filter-checkbox {
        font-size: 0.7rem;
        gap: 0.1rem;
        padding: 0.2rem 0.15rem;
    }

    .filter-checkbox .tone-icon-sm {
        height: 10px;
        width: 14px;
    }

    .filter-checkbox input[type="checkbox"] {
        height: 14px;
        width: 14px;
    }

    .filter-grid {
        gap: 0.15rem;
    }

    .hanzi-text {
        font-size: 2.75rem;
    }

    .main-content {
        padding: 1rem 0.5rem;
    }

    .next-btn {
        font-size: 0.75rem;
        padding: 0.4rem 0.7rem;
    }

    .quiz-card {
        border-radius: var(--border-radius-md);
        padding: 1rem;
    }

    .result-display {
        gap: 0.4rem;
        padding: 0.5rem 0.6rem;
    }

    .result-meaning {
        font-size: 0.75rem;
        max-width: 100px;
    }

    .result-pinyin {
        font-size: 0.8rem;
    }

    .result-status {
        font-size: 0.8rem;
    }

    .score-display {
        font-size: 0.85rem;
        padding: 0.5rem 0.6rem;
    }

    .score-reset-btn {
        font-size: 0.75rem;
        height: 28px;
        width: 28px;
    }

    .settings-toggle-btn {
        font-size: 0.75rem;
        height: 28px;
        width: 28px;
    }

    .settings-overlay {
        top: 0;
        z-index: 1000;
    }

    .settings-panel {
        height: 100vh;
        max-width: 100vw;
        top: 0;
        width: 100%;
        z-index: 1001;
    }

    .tone-btn {
        border-width: 1.5px;
        padding: 0.4rem 0.15rem;
    }

    .tone-icon {
        height: 12px;
        width: 18px;
    }

    .tone-label {
        font-size: 0.45rem;
    }

    .tone-options-grid {
        gap: 0.35rem;
    }

    .tonepairs-container {
        margin: 0;
    }

    .tonepairs-header h1 {
        font-size: 1.2rem;
    }

    .tonepairs-subtitle {
        font-size: 0.8rem;
    }
}

@media (max-width: 380px) {
    .filter-checkbox .tone-icon-sm {
        height: 8px;
        width: 12px;
    }

    .hanzi-text {
        font-size: 2.25rem;
    }

    .score-display {
        font-size: 0.8rem;
    }

    .tone-btn {
        padding: 0.3rem 0.1rem;
    }

    .tone-icon {
        height: 10px;
        width: 15px;
    }

    .tone-label {
        font-size: 0.4rem;
    }

    .tone-options-grid {
        gap: 0.25rem;
    }

    .tonepairs-header h1 {
        font-size: 1.1rem;
    }
}

@media (prefers-reduced-motion: reduce) {
    .audio-btn.playing {
        animation: none;
    }

    .tone-btn, .audio-btn, .next-btn, .filter-btn {
        transition: none;
    }

    .tone-btn.show-correct {
        animation: none;
    }

    .tone-btn:hover, .audio-btn:hover, .next-btn:hover {
        transform: none;
    }
}