/**
 * css/style.css
 * Science with Claude (SWC) — Public Site Styles
 * sciencewithclaude.com
 *
 * Typography-focused design for a research publication platform.
 * Clean, readable, with domain color coding and phase indicators.
 */

/* ── Reset & Base ─────────────────────────────────────────── */

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

:root {
    /* Typography */
    --font-serif: Georgia, 'Times New Roman', serif;
    --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', Helvetica, Arial, sans-serif;
    --font-mono: 'SF Mono', 'Menlo', 'Monaco', 'Consolas', monospace;

    /* Colors */
    --color-text: #2c2c2c;
    --color-text-light: #666;
    --color-text-muted: #999;
    --color-bg: #fafaf8;
    --color-bg-white: #fff;
    --color-border: #e0ddd8;
    --color-border-light: #eee;

    /* Accent */
    --color-accent: #2a5a3a;
    --color-accent-light: #e8f0eb;
    --color-link: #1a4a6a;
    --color-link-hover: #0d3048;

    /* Domain Colors */
    --color-earth: #5a7a4a;
    --color-life: #4a7a6a;
    --color-home: #7a6a4a;
    --color-self: #6a4a7a;
    --color-cross: #5a6a7a;

    /* Phase Status */
    --color-phase-pending: #ccc;
    --color-phase-active: #d4a843;
    --color-phase-complete: #4a7a5a;
    --color-phase-skipped: #aaa;

    /* Spacing */
    --container-width: 820px;
    --container-wide: 1100px;
}

body {
    font-family: var(--font-serif);
    font-size: 18px;
    line-height: 1.72;
    color: var(--color-text);
    background: var(--color-bg);
    -webkit-font-smoothing: antialiased;
}

a {
    color: var(--color-link);
    text-decoration: none;
    transition: color 0.15s;
}
a:hover { color: var(--color-link-hover); text-decoration: underline; }

img { max-width: 100%; height: auto; }

/* ── Layout ───────────────────────────────────────────────── */

.container {
    max-width: var(--container-width);
    margin: 0 auto;
    padding: 0 24px;
}

.site-main { min-height: 60vh; }

/* ── Site Header ──────────────────────────────────────────── */

.site-header {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    padding: 16px 24px;
}

.header-inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    display: flex;
    justify-content: space-between;
    align-items: center;
    flex-wrap: wrap;
    gap: 12px;
}

.site-logo {
    text-decoration: none;
    color: var(--color-text);
}
.logo-title {
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    letter-spacing: 0.02em;
    display: block;
}
.logo-tagline {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-text-muted);
    display: block;
}

.site-nav {
    display: flex;
    gap: 24px;
    font-family: var(--font-sans);
    font-size: 14px;
}
.site-nav a { color: var(--color-text-light); text-decoration: none; }
.site-nav a:hover { color: var(--color-text); }
.site-nav a.active { color: var(--color-accent); font-weight: 600; }
.site-nav .nav-external { color: var(--color-text-muted); }
.site-nav .nav-admin {
    color: var(--color-accent);
    font-weight: 500;
    padding: 2px 10px;
    border: 1px solid var(--color-accent);
    border-radius: 4px;
}

/* ── Hero ─────────────────────────────────────────────────── */

.hero {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    padding: 60px 24px;
    text-align: center;
}
.hero-inner { max-width: 640px; margin: 0 auto; }

.hero h1 {
    font-family: var(--font-sans);
    font-size: 32px;
    font-weight: 700;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}
.hero-subtitle {
    font-family: var(--font-sans);
    font-size: 16px;
    color: var(--color-text-light);
    margin-bottom: 16px;
}
.hero-description {
    font-size: 16px;
    color: var(--color-text-light);
    line-height: 1.6;
    margin-bottom: 16px;
}
.hero-byline {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--color-text-muted);
}

/* ── Filters ──────────────────────────────────────────────── */

.filters { padding: 20px 24px; }
.filter-bar {
    max-width: var(--container-wide);
    margin: 0 auto;
    display: flex;
    gap: 8px;
    flex-wrap: wrap;
}
.filter-pill {
    font-family: var(--font-sans);
    font-size: 13px;
    padding: 4px 14px;
    border: 1px solid var(--color-border);
    border-radius: 20px;
    color: var(--color-text-light);
    text-decoration: none;
    transition: all 0.15s;
}
.filter-pill:hover { border-color: var(--color-text-muted); color: var(--color-text); text-decoration: none; }
.filter-pill.active { background: var(--color-accent); border-color: var(--color-accent); color: #fff; }

.active-filter {
    max-width: var(--container-wide);
    margin: 8px auto 0;
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-light);
}
.filter-clear { margin-left: 8px; color: var(--color-accent); }

/* ── Domain Badges ────────────────────────────────────────── */

.domain-badge {
    font-family: var(--font-sans);
    font-size: 11px;
    font-weight: 600;
    letter-spacing: 0.06em;
    text-transform: uppercase;
    padding: 2px 10px;
    border-radius: 3px;
    display: inline-block;
}
.domain-earth { background: #e8f0e4; color: var(--color-earth); }
.domain-life  { background: #e4f0ec; color: var(--color-life); }
.domain-home  { background: #f0ece4; color: var(--color-home); }
.domain-self  { background: #ece4f0; color: var(--color-self); }
.domain-cross { background: #e4e8f0; color: var(--color-cross); }

/* ── Section ──────────────────────────────────────────────── */

.section {
    max-width: var(--container-wide);
    margin: 0 auto;
    padding: 32px 24px;
}
.section-title {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

/* ── Investigation Cards ──────────────────────────────────── */

.investigation-grid {
    display: grid;
    grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
    gap: 24px;
}

.investigation-card {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    transition: border-color 0.15s, box-shadow 0.15s;
}
.investigation-card:hover {
    border-color: #ccc;
    box-shadow: 0 2px 8px rgba(0,0,0,0.06);
}
.investigation-active { border-left: 3px solid var(--color-phase-active); }

.card-image img { width: 100%; height: 180px; object-fit: cover; display: block; }
.card-content { padding: 20px; }
.card-meta-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 10px;
}
.card-meta-top time {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-muted);
}

.investigation-card h3 {
    font-size: 20px;
    line-height: 1.35;
    margin-bottom: 8px;
}
.investigation-card h3 a { color: var(--color-text); }
.investigation-card h3 a:hover { color: var(--color-link); text-decoration: none; }

.card-excerpt {
    font-size: 15px;
    color: var(--color-text-light);
    line-height: 1.55;
    margin-bottom: 12px;
}
.card-footer {
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
    align-items: center;
}
.card-views {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-text-muted);
    margin-left: auto;
}

.card-phase-indicator {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-light);
    padding: 12px 20px 0;
    display: flex;
    align-items: center;
    gap: 8px;
}
.card-meta {
    padding: 0 20px 16px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.card-progress {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-muted);
}

/* ── Tags ─────────────────────────────────────────────────── */

.tag-link {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-text-muted);
    background: var(--color-bg);
    padding: 2px 8px;
    border-radius: 3px;
    text-decoration: none;
}
.tag-link:hover { color: var(--color-text); background: var(--color-border-light); text-decoration: none; }

/* ── Investigation Viewer ─────────────────────────────────── */

.investigation-header {
    background: var(--color-bg-white);
    border-bottom: 1px solid var(--color-border);
    padding: 48px 24px 32px;
}
.investigation-header-inner {
    max-width: var(--container-width);
    margin: 0 auto;
}
.investigation-meta-top {
    display: flex;
    justify-content: space-between;
    align-items: center;
    margin-bottom: 16px;
}
.investigation-meta-top time {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--color-text-muted);
}

.investigation h1 {
    font-size: 36px;
    line-height: 1.25;
    letter-spacing: -0.01em;
    margin-bottom: 12px;
}
.investigation-excerpt {
    font-size: 18px;
    color: var(--color-text-light);
    line-height: 1.55;
    margin-bottom: 16px;
}
.investigation-byline {
    font-family: var(--font-sans);
    font-size: 14px;
    color: var(--color-text-light);
    margin-bottom: 8px;
}
.byline-investigator { font-weight: 600; }
.byline-separator { color: var(--color-text-muted); margin: 0 4px; }
.byline-ai { font-style: italic; }

/* ── Progress Bar ─────────────────────────────────────────── */

.investigation-progress { margin-top: 16px; }
.progress-bar, .progress-bar-large {
    background: var(--color-border-light);
    border-radius: 4px;
    overflow: hidden;
    height: 4px;
}
.progress-bar-large { height: 6px; margin-bottom: 6px; }
.progress-fill {
    height: 100%;
    background: var(--color-accent);
    border-radius: 4px;
    transition: width 0.3s;
}
.progress-text, .progress-label {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-text-muted);
}

/* ── Tab Navigation ───────────────────────────────────────── */

.investigation-tabs {
    background: var(--color-bg-white);
    border-bottom: 2px solid var(--color-border);
    position: sticky;
    top: 0;
    z-index: 100;
}
.tabs-inner {
    max-width: var(--container-width);
    margin: 0 auto;
    display: flex;
    padding: 0 24px;
}

.tab {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 500;
    color: var(--color-text-muted);
    text-decoration: none;
    padding: 14px 20px;
    border-bottom: 2px solid transparent;
    margin-bottom: -2px;
    transition: color 0.15s, border-color 0.15s;
}
.tab:hover { color: var(--color-text); text-decoration: none; }
.tab-active {
    color: var(--color-accent);
    border-bottom-color: var(--color-accent);
}

/* ── Tab Content ──────────────────────────────────────────── */

.investigation-content { padding: 40px 0 60px; }

.tab-empty {
    text-align: center;
    padding: 60px 24px;
    color: var(--color-text-muted);
    font-style: italic;
}

/* ── Prose (narrative content) ────────────────────────────── */

.prose { max-width: var(--container-width); }
.prose p { margin-bottom: 1.4em; }
.prose h2 {
    font-size: 24px;
    margin-top: 2em;
    margin-bottom: 0.6em;
}
.prose h3 {
    font-size: 20px;
    margin-top: 1.6em;
    margin-bottom: 0.5em;
}
.prose blockquote {
    border-left: 3px solid var(--color-border);
    padding-left: 20px;
    margin: 1.4em 0;
    color: var(--color-text-light);
    font-style: italic;
}
.prose code {
    font-family: var(--font-mono);
    font-size: 0.88em;
    background: var(--color-bg);
    padding: 2px 6px;
    border-radius: 3px;
}
.prose pre {
    background: #2c2c2c;
    color: #e8e8e8;
    padding: 20px;
    border-radius: 6px;
    overflow-x: auto;
    margin: 1.4em 0;
    font-size: 14px;
    line-height: 1.5;
}
.prose pre code { background: none; padding: 0; color: inherit; }

.prose-technical { font-size: 16px; line-height: 1.65; }
.prose-publication { font-size: 16px; }

.prose table {
    width: 100%;
    border-collapse: collapse;
    margin: 1.4em 0;
    font-size: 15px;
}
.prose th, .prose td {
    padding: 10px 14px;
    border: 1px solid var(--color-border);
    text-align: left;
}
.prose th {
    background: var(--color-bg);
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 600;
}
.prose img {
    border-radius: 4px;
    margin: 1em 0;
}

/* ── Workbench: Phase Timeline ────────────────────────────── */

.workbench-intro {
    font-family: var(--font-sans);
    font-size: 15px;
    color: var(--color-text-light);
    margin-bottom: 32px;
    padding-bottom: 24px;
    border-bottom: 1px solid var(--color-border-light);
}

.phase-timeline { }
.phase-block {
    border-left: 3px solid var(--color-phase-pending);
    padding: 20px 0 20px 24px;
    margin-left: 16px;
    position: relative;
}
.phase-block::before {
    content: '';
    position: absolute;
    left: -8px;
    top: 24px;
    width: 13px;
    height: 13px;
    border-radius: 50%;
    background: var(--color-phase-pending);
    border: 2px solid var(--color-bg);
}
.phase-complete { border-left-color: var(--color-phase-complete); }
.phase-complete::before { background: var(--color-phase-complete); }
.phase-active { border-left-color: var(--color-phase-active); }
.phase-active::before { background: var(--color-phase-active); }
.phase-skipped { border-left-color: var(--color-phase-skipped); }
.phase-skipped::before { background: var(--color-phase-skipped); }

.phase-header {
    display: flex;
    align-items: flex-start;
    gap: 12px;
    margin-bottom: 12px;
}
.phase-number {
    font-family: var(--font-sans);
    font-size: 13px;
    font-weight: 700;
    color: var(--color-text-muted);
    background: var(--color-bg);
    width: 28px;
    height: 28px;
    border-radius: 50%;
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
}
.phase-title h3 {
    font-family: var(--font-sans);
    font-size: 16px;
    font-weight: 600;
    margin: 0;
}
.phase-label {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-muted);
}
.phase-status-badge {
    font-family: var(--font-sans);
    font-size: 11px;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-left: auto;
    flex-shrink: 0;
}

.phase-content { margin-bottom: 16px; font-size: 16px; }

/* Attribution blocks */
.phase-attribution {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    margin: 16px 0;
}
.attribution-block {
    padding: 16px;
    border-radius: 6px;
    font-size: 15px;
}
.attribution-block h4 {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    margin-bottom: 8px;
}
.attribution-investigator {
    background: #f5f0e8;
    border-left: 3px solid var(--color-home);
}
.attribution-investigator h4 { color: var(--color-home); }

.attribution-claude {
    background: #e8f0f5;
    border-left: 3px solid var(--color-cross);
}
.attribution-claude h4 { color: var(--color-cross); }

.phase-methods {
    background: var(--color-bg);
    padding: 16px;
    border-radius: 6px;
    margin: 12px 0;
    font-size: 14px;
}
.phase-methods h4 {
    font-family: var(--font-sans);
    font-size: 12px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.06em;
    color: var(--color-text-muted);
    margin-bottom: 6px;
}
.phase-dates {
    font-family: var(--font-sans);
    font-size: 12px;
    color: var(--color-text-muted);
    display: flex;
    gap: 16px;
    margin-top: 8px;
}

/* ── CNL Reference ────────────────────────────────────────── */

.cnl-reference {
    font-family: var(--font-sans);
    font-size: 14px;
    padding: 12px 16px;
    background: var(--color-bg);
    border-radius: 6px;
    margin-bottom: 24px;
    display: flex;
    align-items: center;
    gap: 12px;
}
.cnl-id {
    font-family: var(--font-mono);
    font-size: 13px;
    font-weight: 600;
    color: var(--color-accent);
}

/* ── Visualizations ───────────────────────────────────────── */

.visualizations-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}
.visualizations-section h2 {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 20px;
}

.visualization {
    margin-bottom: 32px;
}
.viz-container {
    background: var(--color-bg-white);
    border: 1px solid var(--color-border);
    border-radius: 6px;
    overflow: hidden;
    min-height: 200px;
}
.viz-placeholder {
    display: flex;
    align-items: center;
    justify-content: center;
    height: 200px;
    color: var(--color-text-muted);
    font-family: var(--font-sans);
    font-size: 14px;
}
.visualization figcaption {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-light);
    padding: 8px 0;
    line-height: 1.5;
}
.visualization figcaption strong {
    display: block;
    color: var(--color-text);
    margin-bottom: 2px;
}

/* ── Citations ────────────────────────────────────────────── */

.citations-section {
    margin-top: 40px;
    padding-top: 32px;
    border-top: 1px solid var(--color-border-light);
}
.citations-section h2 {
    font-family: var(--font-sans);
    font-size: 14px;
    font-weight: 600;
    text-transform: uppercase;
    letter-spacing: 0.08em;
    color: var(--color-text-muted);
    margin-bottom: 16px;
}
.citation-list {
    font-size: 14px;
    line-height: 1.6;
    color: var(--color-text-light);
    padding-left: 24px;
}
.citation-list li { margin-bottom: 8px; }
.citation-number { font-weight: 600; color: var(--color-text); }

/* ── Tags Section ─────────────────────────────────────────── */

.tags-section {
    margin-top: 24px;
    display: flex;
    flex-wrap: wrap;
    gap: 6px;
}

/* ── Empty State ──────────────────────────────────────────── */

.empty-state {
    text-align: center;
    padding: 60px 24px;
    color: var(--color-text-light);
}

/* ── Footer ───────────────────────────────────────────────── */

.site-footer {
    background: var(--color-bg-white);
    border-top: 1px solid var(--color-border);
    padding: 40px 24px;
    margin-top: 60px;
}
.footer-inner {
    max-width: var(--container-wide);
    margin: 0 auto;
    display: grid;
    grid-template-columns: 1fr 1fr 1fr;
    gap: 32px;
}
.footer-name {
    font-family: var(--font-sans);
    font-weight: 600;
    font-size: 14px;
    margin-bottom: 4px;
}
.footer-affiliation {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-muted);
}
.footer-links {
    display: flex;
    flex-direction: column;
    gap: 6px;
    font-family: var(--font-sans);
    font-size: 13px;
}
.footer-meta {
    font-family: var(--font-sans);
    font-size: 13px;
    color: var(--color-text-light);
    line-height: 1.5;
}
.footer-copyright {
    margin-top: 8px;
    color: var(--color-text-muted);
    font-size: 12px;
}

/* ── Responsive ───────────────────────────────────────────── */

@media (max-width: 768px) {
    .header-inner { flex-direction: column; align-items: flex-start; }
    .site-nav { gap: 16px; flex-wrap: wrap; }
    .investigation h1 { font-size: 28px; }
    .tabs-inner { overflow-x: auto; -webkit-overflow-scrolling: touch; }
    .tab { white-space: nowrap; padding: 12px 14px; font-size: 13px; }
    .phase-attribution { grid-template-columns: 1fr; }
    .footer-inner { grid-template-columns: 1fr; gap: 24px; }
    .investigation-grid { grid-template-columns: 1fr; }
}