@import url("https://fonts.googleapis.com/css2?family=Inter:wght@400;500;600;700;800&display=swap");

:root {
    --primary-purple: #3F1D75;
    --interactive-red: #D32F2F;
    --page-bg: #F9FAFB;
    --surface-bg: #FFFFFF;
    --text-main: #333333;
    --text-light: #FFFFFF;
    --border-color: #E5E7EB;
    --shadow-soft: 0 4px 6px -1px rgba(0, 0, 0, 0.05);
}

* {
    box-sizing: border-box;
}

body {
    margin: 0;
    font-family: "Inter", system-ui, sans-serif;
    background: var(--page-bg);
    color: var(--text-main);
}

.site-header {
    width: 100vw;
    min-height: 72px;
    background: var(--primary-purple);
    color: var(--text-light);
    display: flex;
    align-items: center;
}

.container {
    max-width: 1280px;
    margin: 0 auto;
    padding: 0 24px;
    width: 100%;
}

.header-content {
    padding: 18px 0;
}

.header-content h1 {
    margin: 0;
    font-size: clamp(1.6rem, 3vw, 2.4rem);
    font-weight: 800;
    letter-spacing: 0.01em;
}

.header-content p {
    margin: 6px 0 0;
    opacity: 0.9;
    font-size: 0.95rem;
}

.main-grid {
    display: grid;
    grid-template-columns: 2fr 1fr;
    gap: 32px;
    padding-top: 30px;
    padding-bottom: 40px;
}

.surface-card,
.sidebar-card {
    background: var(--surface-bg);
    border: 1px solid var(--border-color);
    border-radius: 8px;
    box-shadow: var(--shadow-soft);
}

.surface-card {
    padding: 24px;
}

.section-title,
.sidebar-title {
    margin: 0 0 14px;
    color: var(--primary-purple);
    font-size: clamp(1.6rem, 2.2vw, 2rem);
    font-weight: 700;
}

.section-title {
    padding-bottom: 10px;
    border-bottom: 2px solid #8fe0e8;
}

.article-heading {
    margin-top: 26px;
}

.legend-row {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.legend-pill {
    height: 36px;
    border-radius: 9999px;
    border: 1px solid var(--border-color);
    background: var(--surface-bg);
    color: var(--text-main);
    padding: 0 14px;
    display: inline-flex;
    align-items: center;
    gap: 8px;
    font-size: 0.95rem;
    font-weight: 600;
    opacity: 1;
    cursor: pointer;
    transition: background-color 0.2s ease, border-color 0.2s ease;
}

.legend-pill:hover {
    border-color: var(--primary-purple);
    background: #f4effc;
}

.legend-helper {
    margin: 12px 0 0;
    color: #5f6470;
    font-size: 0.92rem;
}

.save-status {
    margin: 8px 0 0;
    min-height: 1.2em;
    color: #5f6470;
    font-size: 0.88rem;
}

.save-status.error {
    color: var(--interactive-red);
}

.article-body {
    font-size: 18px;
    line-height: 1.7;
}

.article-body p {
    margin: 0 0 14px;
}

.interactive-trigger {
    color: var(--interactive-red);
    font-weight: 600;
    cursor: pointer;
    text-decoration: none;
}

.interactive-trigger::after {
    content: " 🔍";
    font-size: 0.9em;
}

.interactive-trigger:hover {
    text-decoration: underline;
}

.sidebar-card {
    padding: 20px;
}

.sidebar-title {
    margin-bottom: 16px;
    padding-bottom: 10px;
    border-bottom: 2px solid #8fe0e8;
}

.accordion-item {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    margin-bottom: 12px;
    overflow: hidden;
}

.accordion-header {
    width: 100%;
    background: transparent;
    color: var(--text-main);
    border: 0;
    border-bottom: 1px solid var(--border-color);
    padding: 14px 16px;
    display: flex;
    justify-content: space-between;
    align-items: center;
    text-align: left;
    font-size: 1rem;
    font-weight: 600;
    cursor: pointer;
}

.accordion-icon {
    font-size: 1.1rem;
    line-height: 1;
}

.accordion-body {
    display: none;
    padding: 14px 16px 16px;
    background: var(--surface-bg);
    font-size: 1rem;
    line-height: 1.6;
}

.accordion-item.open .accordion-body {
    display: block;
}

.accordion-item.open .accordion-header {
    border-bottom-color: transparent;
}

.modal-overlay {
    position: fixed;
    inset: 0;
    background: rgba(0, 0, 0, 0.6);
    z-index: 9999;
    display: none;
    align-items: center;
    justify-content: center;
    padding: 24px;
}

.modal-overlay.visible {
    display: flex;
}

.modal-box {
    position: relative;
    width: 90%;
    max-width: 800px;
    max-height: 85vh;
    overflow-y: auto;
    background: var(--surface-bg);
    border-radius: 12px;
    padding: 24px;
    box-shadow: 0 18px 38px rgba(0, 0, 0, 0.2);
}

.modal-close {
    position: absolute;
    top: 16px;
    right: 16px;
    width: 32px;
    height: 32px;
    border-radius: 50%;
    border: 0;
    background: #f0f1f5;
    color: #666;
    font-size: 1.2rem;
    line-height: 1;
    cursor: pointer;
}

.modal-title {
    margin: 0 40px 12px 0;
    color: var(--primary-purple);
}

.modal-body {
    font-size: 1.05rem;
    line-height: 1.7;
}

.builder-form {
    display: grid;
    gap: 12px;
}

.builder-selection {
    margin: 0;
    color: #6c7380;
    font-size: 0.95rem;
}

.builder-selection strong {
    color: var(--interactive-red);
}

.builder-label {
    font-size: 0.92rem;
    font-weight: 600;
    color: #4a4f5b;
}

.builder-input,
.builder-textarea {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 10px 12px;
    font: inherit;
    color: var(--text-main);
    background: var(--surface-bg);
}

.builder-textarea {
    min-height: 130px;
    resize: vertical;
}

.builder-actions {
    display: flex;
    justify-content: flex-end;
    gap: 10px;
}

.builder-btn {
    border: 1px solid var(--border-color);
    border-radius: 8px;
    padding: 9px 14px;
    background: var(--surface-bg);
    color: var(--text-main);
    font: inherit;
    font-weight: 600;
    cursor: pointer;
}

.builder-btn.primary {
    background: var(--primary-purple);
    border-color: var(--primary-purple);
    color: var(--text-light);
}

.builder-error {
    margin: 0;
    color: var(--interactive-red);
    font-size: 0.9rem;
}

.modal-media {
    width: 100%;
    border: 1px solid var(--border-color);
    border-radius: 10px;
    display: block;
}

.video-wrapper {
    position: relative;
    padding-bottom: 56.25%;
    height: 0;
    overflow: hidden;
    border-radius: 10px;
}

.video-wrapper iframe {
    position: absolute;
    inset: 0;
    width: 100%;
    height: 100%;
    border: 0;
}

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

    .sidebar-column {
        margin-top: -8px;
    }
}