.timeline-page {
    background: #f8f9ff;
}

.timeline-content-width {
    width: min(calc(100% - 40px), 1180px);
    margin: 0 auto;
}

.timeline-hero-row {
    padding: 30px 0 24px;
    background: linear-gradient(135deg, #f7f7ff 0%, #ffffff 52%, #eefbf9 100%);
    border-bottom: 1px solid #e8eaf2;
}

.timeline-eyebrow {
    margin: 0 0 10px;
    color: var(--purple, #667eea);
    font-size: 13px;
    font-weight: 800;
    letter-spacing: .04em;
}

.timeline-hero-title {
    max-width: 900px;
    margin: 0;
    color: var(--text-primary, #28304d);
    font-size: clamp(28px, 4vw, 46px);
    line-height: 1.18;
    letter-spacing: -.03em;
}

.timeline-hero-desc {
    max-width: 920px;
    margin: 14px 0 0;
    color: var(--text-secondary, #5f667d);
    font-size: 16px;
    line-height: 1.8;
}

.timeline-answer {
    display: flex;
    gap: 10px;
    align-items: flex-start;
    max-width: 1000px;
    margin-top: 16px;
    padding: 13px 16px;
    border: 1px solid #dfe3fa;
    border-radius: 12px;
    background: #ffffff;
    color: var(--text-primary, #28304d);
    font-size: 14px;
    line-height: 1.7;
}

.timeline-answer strong {
    flex: 0 0 auto;
    color: var(--purple, #667eea);
}

.timeline-hero-pills {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
    margin-top: 14px;
}

.timeline-hero-pills span {
    padding: 6px 10px;
    border: 1px solid #e1e4f4;
    border-radius: 999px;
    background: rgba(255, 255, 255, .88);
    color: #4b5572;
    font-size: 12px;
    font-weight: 700;
}

.timeline-tool-row {
    padding: 18px 0 0;
}

.timeline-tool-grid {
    display: grid;
    grid-template-columns: minmax(380px, .95fr) minmax(0, 1.05fr);
    gap: 20px;
    align-items: start;
}

.timeline-tool-heading {
    display: flex;
    gap: 12px;
    align-items: flex-start;
}

.timeline-step-badge {
    display: inline-flex;
    width: 30px;
    height: 30px;
    flex: 0 0 30px;
    align-items: center;
    justify-content: center;
    border-radius: 50%;
    background: var(--purple, #667eea);
    color: #ffffff;
    font-size: 14px;
    font-weight: 800;
}

.timeline-input-panel .card,
.timeline-preview-card {
    border: 1px solid #e8eaf2;
    box-shadow: 0 8px 24px rgba(40, 48, 77, .06);
}

.timeline-label-row {
    display: flex;
    gap: 10px;
    align-items: center;
    justify-content: space-between;
}

.timeline-counter-hint,
.timeline-add-row span,
.timeline-live-note {
    color: var(--text-secondary, #6b7280);
    font-size: 12px;
}

.timeline-event-editor {
    display: grid;
    gap: 10px;
}

.timeline-event-row {
    display: grid;
    grid-template-columns: 112px minmax(110px, .9fr) minmax(130px, 1.2fr) 44px;
    gap: 8px;
    align-items: start;
}

.timeline-event-row .data-input {
    min-width: 0;
}

.timeline-event-note {
    min-height: 72px;
    resize: vertical;
}

.timeline-remove-event {
    display: inline-flex;
    min-width: 44px;
    min-height: 44px;
    align-items: center;
    justify-content: center;
    border: 1px solid #f0cbd2;
    border-radius: 9px;
    background: #fff7f8;
    color: #be123c;
    cursor: pointer;
    font-size: 24px;
    line-height: 1;
    transition: background 180ms ease, border-color 180ms ease;
}

.timeline-remove-event:hover,
.timeline-remove-event:focus-visible {
    border-color: #be123c;
    background: #ffe4e8;
}

.timeline-add-row {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 12px;
}

.timeline-option-columns {
    display: grid;
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
    gap: 16px;
    margin-top: 16px;
}

.timeline-choice-grid,
.timeline-theme-grid {
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}

.timeline-choice-btn,
.timeline-theme-btn {
    min-height: 44px;
    padding: 8px 11px;
    border: 1px solid #e3e6f2;
    border-radius: 9px;
    background: #ffffff;
    color: #505873;
    cursor: pointer;
    font: inherit;
    font-size: 13px;
    transition: background 180ms ease, border-color 180ms ease, color 180ms ease;
}

.timeline-choice-btn.active,
.timeline-choice-btn:hover,
.timeline-choice-btn:focus-visible,
.timeline-theme-btn.active,
.timeline-theme-btn:hover,
.timeline-theme-btn:focus-visible {
    border-color: var(--purple, #667eea);
    background: #f3f4ff;
    color: var(--text-primary, #28304d);
}

.timeline-theme-dot {
    display: inline-block;
    width: 10px;
    height: 10px;
    margin-right: 5px;
    border-radius: 50%;
    vertical-align: -1px;
}

.timeline-input-actions {
    display: flex;
    gap: 12px;
    align-items: center;
    flex-wrap: wrap;
    margin-top: 18px;
}

.timeline-alert {
    margin-top: 14px;
    padding: 10px 12px;
    border-radius: 9px;
    font-size: 13px;
    line-height: 1.6;
}

.timeline-alert-error {
    background: #fff1f2;
    color: #9f1239;
}

.timeline-alert-success {
    background: #ecfdf5;
    color: #047857;
}

.timeline-preview-card .card-body {
    padding: 20px;
}

.timeline-preview-header {
    display: flex;
    gap: 12px;
    align-items: flex-start;
    justify-content: space-between;
}

.timeline-svg-container {
    min-height: 370px;
    margin-top: 16px;
    overflow-x: auto;
    border: 1px solid #e8eaf2;
    border-radius: 14px;
    background: #fbfcff;
}

.timeline-output-svg {
    display: block;
    width: 100%;
    min-width: 680px;
    height: auto;
}

.timeline-empty-state {
    display: flex;
    min-height: 370px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 8px;
    padding: 24px;
    color: var(--text-secondary, #6b7280);
    text-align: center;
}

.timeline-empty-state p {
    margin: 0;
    font-size: 14px;
}

.timeline-empty-icon {
    color: var(--purple, #667eea);
    font-size: 36px;
}

.timeline-summary-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 8px;
    margin-top: 14px;
}

.timeline-summary-grid > div {
    display: flex;
    min-height: 66px;
    align-items: center;
    justify-content: center;
    flex-direction: column;
    gap: 3px;
    border-radius: 10px;
    background: #f6f7fb;
    text-align: center;
}

.timeline-summary-grid span {
    color: #7b8298;
    font-size: 11px;
}

.timeline-summary-grid strong {
    max-width: 100%;
    overflow: hidden;
    color: #28304d;
    font-size: 13px;
    text-overflow: ellipsis;
    white-space: nowrap;
}

.timeline-preview-footer {
    display: flex;
    gap: 10px;
    flex-wrap: wrap;
    margin-top: 16px;
}

.timeline-preview-caption,
.timeline-note {
    color: #697187;
    font-size: 13px;
    line-height: 1.7;
}

.timeline-preview-caption {
    margin: 10px 2px 0;
}

.timeline-fact-grid {
    display: grid;
    grid-template-columns: repeat(4, minmax(0, 1fr));
    gap: 10px;
    margin-top: 20px;
}

.timeline-fact-item {
    display: flex;
    min-height: 72px;
    gap: 5px;
    justify-content: center;
    flex-direction: column;
    padding: 12px;
    border: 1px solid #e8eaf2;
    border-radius: 12px;
    background: #fbfcff;
}

.timeline-fact-item strong {
    color: #667eea;
    font-size: 12px;
}

.timeline-fact-item span {
    color: #28304d;
    font-size: 14px;
    font-weight: 700;
}

.timeline-example-meta {
    display: inline-block;
    margin-top: 8px;
    color: #667eea;
    font-size: 12px;
    font-weight: 700;
}

.timeline-support-section p {
    max-width: 920px;
}

@media (max-width: 980px) {
    .timeline-tool-grid {
        grid-template-columns: 1fr;
    }

    .timeline-input-panel {
        order: 1;
    }

    .timeline-preview-panel {
        order: 2;
    }
}

@media (max-width: 720px) {
    .timeline-content-width {
        width: min(calc(100% - 24px), 1180px);
    }

    .timeline-hero-title {
        font-size: 30px;
    }

    .timeline-hero-desc {
        font-size: 15px;
    }

    .timeline-answer {
        flex-direction: column;
        gap: 4px;
    }

    .timeline-event-row {
        grid-template-columns: 1fr 1fr 44px;
    }

    .timeline-event-note {
        grid-column: 1 / -1;
    }

    .timeline-option-columns,
    .timeline-fact-grid {
        grid-template-columns: 1fr 1fr;
    }

    .timeline-summary-grid {
        grid-template-columns: 1fr 1fr;
    }

    .timeline-preview-footer .btn-primary,
    .timeline-preview-footer .btn-outline {
        flex: 1 1 150px;
    }
}

@media (max-width: 460px) {
    .timeline-event-row {
        grid-template-columns: 1fr 44px;
    }

    .timeline-event-title,
    .timeline-event-note {
        grid-column: 1 / -1;
    }

    .timeline-option-columns,
    .timeline-fact-grid {
        grid-template-columns: 1fr;
    }
}

@media (prefers-reduced-motion: reduce) {
    .timeline-choice-btn,
    .timeline-theme-btn,
    .timeline-remove-event {
        transition: none;
    }
}