:root {
    --primary: #1e88e5;
    --primary-dark: #1565c0;
    --secondary: #f5f7fb;
    --text: #243244;
    --text-light: #5f6c7a;
    --text-lighter: #7d8996;
    --border: #dbe4ee;
    --success: #2e9d59;
    --warning: #ff9800;
    --error: #e5484d;
    --bg: #f3f7fb;
    --card-bg: #ffffff;
    --shadow: 0 14px 40px rgba(31, 64, 104, 0.08);
    --radius: 18px;
    --accent-warm: #fff2d9;
    --accent-cool: #e7f1ff;
    --dark-bg: #171b20;
    --dark-card-bg: #20262d;
    --dark-text: #e7edf5;
    --dark-text-light: #afbccb;
    --dark-border: #313944;
    --dark-shadow: 0 16px 40px rgba(0, 0, 0, 0.32);
}

* {
    margin: 0;
    padding: 0;
    box-sizing: border-box;
    font-family: "Segoe UI", "PingFang SC", "Microsoft YaHei", sans-serif;
    transition: background-color 0.25s, color 0.25s, border-color 0.25s, box-shadow 0.25s;
}

body {
    background:
        radial-gradient(circle at top left, rgba(30, 136, 229, 0.12), transparent 28%),
        radial-gradient(circle at top right, rgba(21, 101, 192, 0.08), transparent 24%),
        var(--bg);
    color: var(--text);
    line-height: 1.6;
    min-height: 100vh;
    display: flex;
    flex-direction: column;
}

body.dark-mode {
    background:
        radial-gradient(circle at top left, rgba(100, 181, 246, 0.12), transparent 24%),
        radial-gradient(circle at top right, rgba(30, 136, 229, 0.1), transparent 20%),
        var(--dark-bg);
    color: var(--dark-text);
    --secondary: #262d36;
    --border: var(--dark-border);
    --card-bg: var(--dark-card-bg);
    --text: var(--dark-text);
    --text-light: var(--dark-text-light);
    --text-lighter: #8694a3;
    --shadow: var(--dark-shadow);
}

.icon {
    width: 1em;
    height: 1em;
    display: inline-block;
    fill: currentColor;
    flex-shrink: 0;
}

.top-bar {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    padding: 15px 30px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    color: white;
    box-shadow: 0 4px 18px rgba(0, 0, 0, 0.14);
    position: sticky;
    top: 0;
    z-index: 1000;
}

.logo-area,
.nav-controls {
    display: flex;
    align-items: center;
    gap: 14px;
}

.nav-btn {
    padding: 9px 16px;
    border-radius: 999px;
    background: rgba(255, 255, 255, 0.16);
    color: white;
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    border: 1px solid rgba(255, 255, 255, 0.22);
    cursor: pointer;
}

.nav-btn:hover {
    background: rgba(255, 255, 255, 0.24);
    transform: translateY(-1px);
}

.container {
    max-width: 1320px;
    margin: 28px auto 0;
    padding: 0 20px;
    flex: 1;
    width: 100%;
}

header {
    text-align: center;
    margin-bottom: 28px;
    padding: 10px 20px 0;
}

.page-title {
    font-size: 2.7rem;
    color: var(--primary);
    font-weight: 800;
    letter-spacing: 0.02em;
    margin-bottom: 14px;
}

.dark-mode .page-title {
    color: #88c8ff;
}

.subtitle {
    color: var(--text-light);
    font-size: 1.08rem;
    max-width: 860px;
    margin: 0 auto;
}

.workspace-layout {
    display: flex;
    flex-direction: column;
    gap: 24px;
}

.card {
    background: var(--card-bg);
    border-radius: var(--radius);
    box-shadow: var(--shadow);
    border: 1px solid var(--border);
    overflow: hidden;
}

.card-header {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    padding: 18px 24px;
    font-size: 1.08rem;
    font-weight: 600;
    display: flex;
    align-items: center;
    gap: 12px;
}

.card-body {
    padding: 24px;
}

.settings-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 18px;
}

.setting-field {
    display: flex;
    flex-direction: column;
    gap: 10px;
}

.setting-field label {
    font-size: 0.95rem;
    color: var(--text-light);
    font-weight: 600;
}

.setting-field select,
.setting-display {
    min-height: 48px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--secondary);
    color: var(--text);
    font-size: 1rem;
}

.setting-field select:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.14);
}

.status-display {
    display: flex;
    align-items: center;
    flex-wrap: wrap;
    gap: 10px;
}

.status-chip {
    display: inline-flex;
    align-items: center;
    min-height: 32px;
    padding: 4px 12px;
    border-radius: 999px;
    background: var(--accent-cool);
    color: var(--primary-dark);
    font-size: 0.9rem;
    font-weight: 600;
}

.workbench {
    display: grid;
    grid-template-columns: minmax(0, 2fr) minmax(300px, 0.95fr);
    gap: 24px;
    align-items: start;
}

.utility-grid {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 24px;
}

.utility-panel {
    display: flex;
    flex-direction: column;
    gap: 16px;
}

.editor-grid {
    display: grid;
    grid-template-columns: minmax(0, 1fr) auto minmax(0, 1fr);
    gap: 20px;
    align-items: stretch;
}

.editor-panel {
    display: flex;
    flex-direction: column;
    gap: 14px;
}

.panel-header {
    display: flex;
    justify-content: space-between;
    align-items: flex-start;
    gap: 16px;
}

.panel-header h2 {
    font-size: 1.15rem;
}

.panel-description,
.review-summary p,
.review-empty,
.review-meta,
.review-context,
.info-box li,
.footer-links a,
.footer-info,
.loading-text {
    color: var(--text-light);
}

.panel-stats {
    padding: 8px 12px;
    border-radius: 999px;
    background: var(--secondary);
    border: 1px solid var(--border);
    font-size: 0.9rem;
    color: var(--text-light);
    white-space: nowrap;
}

.input-group {
    position: relative;
}

textarea {
    width: 100%;
    min-height: 360px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 16px;
    font-size: 1.05rem;
    resize: vertical;
    background: var(--card-bg);
    color: var(--text);
}

textarea:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.14);
}

.output-container {
    min-height: 360px;
    padding: 18px;
    border: 1px solid var(--border);
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(30, 136, 229, 0.04), transparent 28%), var(--secondary);
    overflow: auto;
}

.output-text {
    min-height: 320px;
    line-height: 1.9;
    word-break: break-word;
}

.output-text span {
    padding: 2px 4px;
    border-radius: 6px;
}

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

.ambiguous {
    background: rgba(255, 152, 0, 0.16);
    border-bottom: 2px dashed var(--warning);
    cursor: pointer;
}

.ambiguous.active {
    background: rgba(30, 136, 229, 0.2);
    border-bottom-color: var(--primary);
    box-shadow: 0 0 0 2px rgba(30, 136, 229, 0.14);
}

.ambiguous.ignored {
    opacity: 0.58;
    background: rgba(125, 137, 150, 0.14);
    border-bottom-color: var(--text-lighter);
}

.ambiguous:hover {
    background: rgba(255, 152, 0, 0.26);
}

.direction-icon {
    display: flex;
    align-items: center;
    justify-content: center;
}

.icon-action {
    width: 62px;
    height: 62px;
    border: none;
    border-radius: 50%;
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    cursor: pointer;
    box-shadow: 0 8px 18px rgba(30, 136, 229, 0.28);
}

.icon-action:hover {
    transform: translateY(-2px) scale(1.02);
}

.icon-action i {
    font-size: 1.35rem;
}

.icon-action .icon {
    width: 1.35rem;
    height: 1.35rem;
}

.controls {
    display: flex;
    justify-content: center;
    flex-wrap: wrap;
    gap: 16px;
    margin-top: 24px;
}

.btn {
    padding: 13px 22px;
    font-size: 1rem;
    border: none;
    border-radius: 12px;
    cursor: pointer;
    font-weight: 600;
    display: inline-flex;
    align-items: center;
    gap: 10px;
    justify-content: center;
}

.btn-primary {
    background: linear-gradient(135deg, var(--primary), var(--primary-dark));
    color: white;
    box-shadow: 0 10px 24px rgba(30, 136, 229, 0.22);
}

.btn-primary:hover:not(:disabled),
.btn-outline:hover {
    transform: translateY(-2px);
}

.btn-primary:disabled {
    opacity: 0.6;
    cursor: not-allowed;
    box-shadow: none;
}

.btn-outline {
    background: transparent;
    color: var(--primary);
    border: 1px solid var(--primary);
}

.btn.success {
    background: var(--success);
    color: white;
    border-color: var(--success);
}

.review-body {
    display: flex;
    flex-direction: column;
    gap: 18px;
}

.review-summary {
    padding: 18px;
    border-radius: 16px;
    background: linear-gradient(180deg, rgba(30, 136, 229, 0.08), transparent 100%), var(--secondary);
    border: 1px solid var(--border);
}

.review-summary-action {
    width: 100%;
    margin-top: 14px;
}

.review-filters {
    display: flex;
    flex-wrap: wrap;
    gap: 10px;
    margin-top: 14px;
}

.review-filter-btn {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card-bg);
    color: var(--text-light);
    padding: 8px 12px;
    cursor: pointer;
    font-size: 0.88rem;
    font-weight: 600;
}

.review-filter-btn.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

.review-count {
    font-size: 2.2rem;
    line-height: 1;
    font-weight: 800;
    color: var(--primary);
    margin-bottom: 8px;
}

.review-list {
    display: flex;
    flex-direction: column;
    gap: 12px;
    max-height: 520px;
    overflow: auto;
    padding-right: 4px;
}

.review-item {
    border: 1px solid var(--border);
    border-radius: 14px;
    padding: 14px;
    background: var(--secondary);
}

.review-item.active {
    border-color: rgba(30, 136, 229, 0.45);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.12);
}

.review-item.ignored {
    opacity: 0.72;
}

.review-item-header {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 12px;
    margin-bottom: 8px;
}

.review-badge {
    display: inline-flex;
    padding: 4px 10px;
    border-radius: 999px;
    background: rgba(255, 152, 0, 0.15);
    color: #b36b00;
    font-size: 0.8rem;
    font-weight: 700;
}

.review-badge.resolved {
    background: rgba(46, 157, 89, 0.16);
    color: var(--success);
}

.review-badge.ignored {
    background: rgba(125, 137, 150, 0.16);
    color: var(--text-light);
}

.review-context {
    font-size: 0.95rem;
    margin-bottom: 8px;
}

.review-meta {
    font-size: 0.88rem;
    margin-bottom: 10px;
}

.review-candidates {
    display: flex;
    flex-wrap: wrap;
    gap: 8px;
    margin-bottom: 12px;
}

.candidate-pill {
    border: 1px solid var(--border);
    border-radius: 999px;
    background: var(--card-bg);
    color: var(--text);
    padding: 7px 12px;
    cursor: pointer;
    font-size: 0.92rem;
}

.candidate-pill.active {
    background: var(--primary);
    border-color: var(--primary);
    color: white;
}

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

.user-term-form {
    display: flex;
    flex-direction: column;
    gap: 12px;
}

.user-term-form-actions,
.user-term-item-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.user-term-fields {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 12px;
}

.user-term-fields input {
    width: 100%;
    min-height: 46px;
    padding: 12px 14px;
    border-radius: 12px;
    border: 1px solid var(--border);
    background: var(--card-bg);
    color: var(--text);
    font-size: 0.98rem;
}

.user-term-fields input:focus {
    outline: none;
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(30, 136, 229, 0.14);
}

.user-term-list {
    display: flex;
    flex-direction: column;
    gap: 10px;
    min-height: 120px;
}

#user-dictionary-status {
    min-height: 54px;
}

.user-term-item {
    display: flex;
    justify-content: space-between;
    align-items: center;
    gap: 16px;
    padding: 14px;
    border: 1px solid var(--border);
    border-radius: 14px;
    background: var(--secondary);
}

.export-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
}

.export-note {
    padding: 16px;
    border-radius: 14px;
    background: var(--secondary);
    border: 1px solid var(--border);
    color: var(--text-light);
}

.user-term {
    background: rgba(46, 157, 89, 0.12);
    color: var(--success);
}

.review-action-btn {
    border: 1px solid var(--border);
    border-radius: 10px;
    background: var(--card-bg);
    color: var(--text-light);
    padding: 7px 10px;
    cursor: pointer;
    font-size: 0.86rem;
    font-weight: 600;
}

.review-action-btn:hover {
    color: var(--primary);
    border-color: rgba(30, 136, 229, 0.3);
    background: var(--accent-cool);
}

.candidate-menu {
    position: absolute;
    z-index: 1100;
    display: none;
    flex-direction: column;
    min-width: 92px;
    max-height: 240px;
    overflow-y: auto;
    background: var(--card-bg);
    border: 1px solid var(--border);
    border-radius: 12px;
    box-shadow: 0 18px 34px rgba(0, 0, 0, 0.14);
    padding: 6px;
}

.candidate-item {
    border: none;
    background: transparent;
    text-align: left;
    color: var(--text);
    padding: 10px 12px;
    border-radius: 10px;
    cursor: pointer;
    font-size: 1rem;
}

.candidate-item:hover {
    background: var(--accent-cool);
    color: var(--primary-dark);
}

.info-section {
    background: linear-gradient(135deg, rgba(30, 136, 229, 0.1), rgba(30, 136, 229, 0.04));
    border-radius: var(--radius);
    padding: 26px;
    border: 1px solid rgba(30, 136, 229, 0.16);
}

.info-header {
    display: flex;
    align-items: center;
    gap: 12px;
    margin-bottom: 18px;
    color: var(--primary-dark);
}

.info-content {
    display: grid;
    grid-template-columns: repeat(2, minmax(0, 1fr));
    gap: 18px;
}

.info-box {
    background: rgba(255, 255, 255, 0.76);
    border-radius: 16px;
    padding: 20px;
    border: 1px solid rgba(30, 136, 229, 0.12);
}

.info-box h3 {
    color: var(--primary-dark);
    margin-bottom: 12px;
    font-size: 1.08rem;
    display: flex;
    align-items: center;
    gap: 10px;
}

.info-box ul {
    padding-left: 22px;
}

.info-box li {
    margin-bottom: 10px;
}

footer {
    background: rgba(255, 255, 255, 0.72);
    text-align: center;
    padding: 28px 20px 24px;
    color: var(--text-light);
    font-size: 0.92rem;
    border-top: 1px solid var(--border);
    margin-top: 44px;
    backdrop-filter: blur(10px);
}

.dark-mode footer {
    background: rgba(23, 27, 32, 0.9);
}

.footer-links {
    display: flex;
    justify-content: center;
    gap: 22px;
    margin-top: 14px;
    flex-wrap: wrap;
}

.footer-links a {
    text-decoration: none;
    display: inline-flex;
    align-items: center;
    gap: 8px;
}

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

.paste-indicator {
    position: absolute;
    right: 18px;
    top: 18px;
    background: var(--primary);
    color: white;
    padding: 5px 10px;
    border-radius: 999px;
    font-size: 0.82rem;
    opacity: 0;
    pointer-events: none;
}

.show-indicator {
    opacity: 1;
}

.loading-container {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    min-height: 280px;
    gap: 14px;
}

.loader {
    display: inline-block;
    width: 28px;
    height: 28px;
    border: 3px solid rgba(30, 136, 229, 0.2);
    border-radius: 50%;
    border-top-color: var(--primary);
    animation: spin 1s linear infinite;
}

.error-icon {
    color: var(--error);
    width: 2rem;
    height: 2rem;
}

.error-text {
    color: var(--text-light);
    font-size: 0.92rem;
}

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

@media (max-width: 1100px) {
    .settings-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }

    .workbench {
        grid-template-columns: 1fr;
    }

    .review-list {
        max-height: none;
    }

    .utility-grid {
        grid-template-columns: 1fr;
    }
}

@media (max-width: 900px) {
    .editor-grid {
        grid-template-columns: 1fr;
    }

    .direction-icon {
        order: 2;
        margin: 4px 0;
    }
}

@media (max-width: 640px) {
    .top-bar {
        padding: 14px 18px;
        flex-direction: column;
        align-items: stretch;
        gap: 12px;
    }

    .nav-controls {
        justify-content: flex-end;
    }

    .container {
        padding: 0 14px;
    }

    .page-title {
        font-size: 2rem;
    }

    .card-body,
    .info-section {
        padding: 18px;
    }

    .settings-grid,
    .info-content,
    .user-term-fields {
        grid-template-columns: 1fr;
    }

    textarea,
    .output-container {
        min-height: 280px;
    }

    .controls {
        flex-direction: column;
    }

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

    .panel-header {
        flex-direction: column;
        align-items: flex-start;
    }
}