/* ============================================ Natural Farming Website - Main Stylesheet AI時代の暮らし ============================================ */ /* CSS Variables */ :root { --earth-dark: #2d2a24; --earth-brown: #5c4a3d; --soil-rich: #6b5344; --leaf-green: #4a6741; --leaf-dark: #3a5331; --moss-green: #7a9a6d; --sand-light: #f5f0e8; --cream: #faf8f3; --clay: #c9b8a3; --root-tan: #d4c4a8; --sky-pale: #e8ebe4; --olive: #808a5c; --font-serif: 'Georgia', 'Hiragino Mincho ProN', 'Yu Mincho', serif; --font-sans: -apple-system, BlinkMacSystemFont, 'Hiragino Kaku Gothic ProN', 'Yu Gothic', 'Meiryo', sans-serif; --transition-base: 0.3s ease; --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.08); --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.12); /* Adaptive border tints (subtle dividers). Reassigned in dark mode so they remain visible against the dark background. */ --border-subtle: rgba(0, 0, 0, 0.08); --border-faint: rgba(0, 0, 0, 0.05); --hover-tint: rgba(0, 0, 0, 0.03); /* Inverted / anchor sections (footer, dark sections, green CTA). These are dark-on-light bands in light mode and must stay dark in dark mode — so they are NOT derived from the flipping palette. */ --footer-bg: #2d2a24; --footer-text: #c9b8a3; --footer-heading: #f5f0e8; --section-dark-bg: #2d2a24; --section-dark-text: #f5f0e8; --cta-bg: #4a6741; --cta-text: #faf8f3; } /* --- Dark theme (warm dark / 暖かい焼げ茶系) --- Variables are re-bound so the existing CSS continues to work as-is. The earth-tone identity is preserved: backgrounds are dark warm browns, text is warm off-cream. Pure black is avoided. */ :root[data-theme="dark"] { --earth-dark: #f0e5cf; /* was the darkest — now becomes lightest (titles) */ --earth-brown: #d0c2a6; /* mid contrast text */ --soil-rich: #b8aa8c; /* secondary text, breadcrumb, captions */ --leaf-green: #a8d094; /* link color — boosted lightness for readability */ --leaf-dark: #c7e3b5; /* link hover */ --moss-green: #94c184; /* accent / borders */ --sand-light: #28241d; /* alt-section background */ --cream: #1a1814; /* main background — warm dark soil */ --clay: #5a4e3d; /* mid earth */ --root-tan: #3d362b; /* borders */ --sky-pale: #211e18; /* gradient stop — slightly darker than cream */ --olive: #b3bd84; /* accent green-yellow */ --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.4); --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.55); --border-subtle: rgba(255, 255, 255, 0.12); --border-faint: rgba(255, 255, 255, 0.07); --hover-tint: rgba(255, 255, 255, 0.05); /* Anchor sections stay dark in dark mode (do not flip to light) */ --footer-bg: #211d16; --footer-text: #c9b8a3; --footer-heading: #f0e5cf; --section-dark-bg: #211d16; --section-dark-text: #e0d4be; --cta-bg: #2e4429; --cta-text: #ece3d2; } /* Respect OS preference when the user hasn't set a manual override. We use both attribute selectors so the rule only fires when no explicit `data-theme` is set on . */ @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]):not([data-theme="dark"]) { --earth-dark: #f0e5cf; --earth-brown: #d0c2a6; --soil-rich: #b8aa8c; --leaf-green: #a8d094; --leaf-dark: #c7e3b5; --moss-green: #94c184; --sand-light: #28241d; --cream: #1a1814; --clay: #5a4e3d; --root-tan: #3d362b; --sky-pale: #211e18; --olive: #b3bd84; --shadow-soft: 0 4px 20px rgba(0, 0, 0, 0.4); --shadow-medium: 0 8px 30px rgba(0, 0, 0, 0.55); --border-subtle: rgba(255, 255, 255, 0.12); --border-faint: rgba(255, 255, 255, 0.07); --hover-tint: rgba(255, 255, 255, 0.05); --footer-bg: #211d16; --footer-text: #c9b8a3; --footer-heading: #f0e5cf; --section-dark-bg: #211d16; --section-dark-text: #e0d4be; --cta-bg: #2e4429; --cta-text: #ece3d2; } } /* Apply the cream/text colors to the page itself so the html element matches when no explicit background is set on body. */ html { background: var(--cream); color: var(--earth-dark); } body { background: var(--cream); } /* Reset & Base */ *, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; } html { scroll-behavior: smooth; font-size: 16px; } body { font-family: var(--font-sans); font-weight: 400; background: var(--cream); color: var(--earth-dark); line-height: 1.9; overflow-x: hidden; } /* Grain overlay - removed for simpler design */ img { max-width: 100%; height: auto; display: block; } a { color: var(--leaf-green); text-decoration: none; transition: var(--transition-base); } a:hover { color: var(--leaf-dark); } /* Typography */ h1, h2, h3, h4, h5, h6 { font-family: var(--font-serif); font-weight: 400; line-height: 1.4; letter-spacing: 0.05em; } h1 { font-size: clamp(2.2rem, 6vw, 3.5rem); } h2 { font-size: clamp(1.6rem, 4vw, 2.4rem); } h3 { font-size: clamp(1.2rem, 3vw, 1.6rem); } p { margin-bottom: 1.5rem; } /* Layout */ .container { max-width: 1100px; margin: 0 auto; padding: 0 2rem; } .container-narrow { max-width: 800px; margin: 0 auto; padding: 0 2rem; } /* Header & Navigation */ .header { position: fixed; top: 0; left: 0; right: 0; z-index: 1000; background: color-mix(in srgb, var(--cream) 95%, transparent); backdrop-filter: blur(10px); border-bottom: 1px solid var(--border-faint); transition: var(--transition-base); } .header-inner { display: flex; justify-content: space-between; align-items: center; padding: 1rem 2rem; max-width: 1200px; margin: 0 auto; } .logo { font-family: var(--font-serif); font-size: 1.3rem; color: var(--earth-dark); letter-spacing: 0.1em; } .logo span { display: block; font-size: 0.65rem; color: var(--soil-rich); letter-spacing: 0.2em; margin-top: 0.2rem; } .nav { display: flex; gap: 2.5rem; align-items: center; } .nav a { font-size: 0.85rem; color: var(--earth-brown); letter-spacing: 0.1em; position: relative; padding: 0.5rem 0; } .nav a::after { content: ''; position: absolute; bottom: 0; left: 0; width: 0; height: 1px; background: var(--leaf-green); transition: width 0.3s ease; } .nav a:hover::after, .nav a.active::after { width: 100%; } .nav .lang-switch { opacity: 0.75; letter-spacing: 0.05em; } .nav .lang-switch:hover { opacity: 1; } /* Dropdown: "Articles" parent with children */ .nav-group { position: relative; } .nav-parent { font-size: 0.85rem; color: var(--earth-brown); letter-spacing: 0.1em; background: none; border: none; padding: 0.5rem 0; cursor: pointer; font-family: inherit; display: inline-flex; align-items: center; gap: 0.25em; } .nav-parent .nav-caret { font-size: 0.7em; transition: transform 0.2s ease; } .nav-group.open > .nav-parent .nav-caret { transform: rotate(180deg); } .nav-submenu { display: none; position: absolute; top: 100%; left: 0; min-width: 14rem; background: var(--cream); border: 1px solid var(--root-tan); padding: 0.25rem 0; z-index: 10; box-shadow: 0 4px 16px rgba(0, 0, 0, 0.06); } .nav-submenu a { display: block; padding: 0.6rem 1rem; white-space: nowrap; letter-spacing: 0.05em; } .nav-submenu a::after { display: none; } .nav-submenu a:hover { background: var(--hover-tint); } /* Desktop: open on hover or keyboard focus */ @media (min-width: 769px) { .nav-group:hover .nav-submenu, .nav-group:focus-within .nav-submenu, .nav-group.open .nav-submenu { display: block; } } .nav-toggle { display: none; flex-direction: column; gap: 5px; background: none; border: none; cursor: pointer; padding: 5px; } .nav-toggle span { width: 24px; height: 2px; background: var(--earth-dark); transition: var(--transition-base); } /* Hero Section */ .hero { min-height: 100vh; display: flex; flex-direction: column; justify-content: center; align-items: center; position: relative; padding: 6rem 2rem 4rem; background: linear-gradient(180deg, var(--sky-pale) 0%, var(--cream) 100%); text-align: center; } .hero-image { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-size: cover; background-position: center; opacity: 0.15; } .hero-content { position: relative; z-index: 1; max-width: 800px; } .hero-label { font-size: 0.75rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--moss-green); margin-bottom: 1.5rem; } .hero-title { color: var(--earth-dark); margin-bottom: 2rem; animation: fadeUp 1s ease-out; } .hero-subtitle { font-size: clamp(1rem, 2.5vw, 1.2rem); color: var(--soil-rich); line-height: 2; animation: fadeUp 1s ease-out 0.2s both; } .scroll-indicator { position: absolute; bottom: 2rem; left: 50%; transform: translateX(-50%); display: flex; flex-direction: column; align-items: center; gap: 0.5rem; color: var(--soil-rich); font-size: 0.7rem; letter-spacing: 0.2em; } .scroll-line { width: 1px; height: 40px; background: var(--soil-rich); animation: scrollPulse 2s ease-in-out infinite; } /* Hero Buttons */ .hero-buttons { display: flex; gap: 1rem; justify-content: center; margin-top: 2rem; } @media (max-width: 600px) { .hero-buttons { flex-direction: column; align-items: center; } } /* Page Hero (smaller) */ .page-hero { padding: 10rem 2rem 4rem; background: linear-gradient(180deg, var(--sky-pale) 0%, var(--cream) 100%); text-align: center; position: relative; } /* No background image: collapse padding and tighten internal spacing. Insights / book chapters use this — the area becomes a compact title block instead of a hero. */ .page-hero.page-hero-noimg { padding: 7.5rem 2rem 1.5rem; background: none; } .page-hero.page-hero-noimg .hero-label { margin-bottom: 0.6rem; } .page-hero.page-hero-noimg .hero-title { margin-bottom: 0.6rem; } .page-hero.page-hero-noimg .hero-subtitle { margin-bottom: 0; } /* Tighten the section that follows when hero has no image */ .page-hero.page-hero-noimg + .section-with-sidebar, .page-hero.page-hero-noimg + .section { padding-top: 0.5rem; } .page-hero-image { position: absolute; top: 0; left: 0; right: 0; bottom: 0; background-size: cover; background-position: center; opacity: 0.12; } .page-hero-content { position: relative; z-index: 1; } /* Sections */ .section { padding: 5rem 0; } .section-alt { background: var(--sand-light); } .section-dark { background: var(--section-dark-bg); color: var(--section-dark-text); } .section-green { background: var(--cta-bg); color: var(--cta-text); } .section-header { text-align: center; margin-bottom: 3rem; } .section-label { font-size: 0.7rem; letter-spacing: 0.3em; text-transform: uppercase; color: var(--moss-green); margin-bottom: 0.8rem; } .section-dark .section-label { color: var(--moss-green); } .section-green .section-label { color: rgba(255, 255, 255, 0.7); } .section-title { color: var(--earth-dark); } .section-dark .section-title { color: var(--sand-light); } .section-green .section-title { color: var(--cream); } /* Cards */ .card-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 2rem; } .card { background: var(--cream); border: 1px solid var(--root-tan); padding: 2rem; transition: var(--transition-base); } .card:hover { box-shadow: var(--shadow-soft); } .card-number { font-family: var(--font-serif); font-size: 2.5rem; color: var(--moss-green); opacity: 0.5; line-height: 1; margin-bottom: 1rem; } .card-title { margin-bottom: 1rem; color: var(--earth-dark); } .card-text { font-size: 0.95rem; color: var(--soil-rich); line-height: 1.8; } /* Principle Cards (dark bg) */ .principle-card { background: rgba(255, 255, 255, 0.03); border: 1px solid rgba(255, 255, 255, 0.08); padding: 2.5rem 2rem; position: relative; transition: var(--transition-base); } .principle-card::before { content: ''; position: absolute; top: 0; left: 0; width: 100%; height: 2px; background: linear-gradient(90deg, var(--moss-green), var(--leaf-green)); opacity: 0.3; } .principle-card:hover { background: rgba(255, 255, 255, 0.06); } /* Quote Block */ .quote-block { background: linear-gradient(135deg, var(--sand-light) 0%, var(--sky-pale) 100%); border-left: 3px solid var(--moss-green); padding: 2.5rem; margin: 2rem 0; position: relative; } .quote-block::before { content: '"'; font-family: var(--font-serif); font-size: 4rem; color: var(--moss-green); opacity: 0.15; position: absolute; top: 0.5rem; left: 1rem; line-height: 1; } .quote-text { font-family: var(--font-serif); font-size: 1.2rem; color: var(--earth-dark); font-style: italic; position: relative; z-index: 1; line-height: 2; } .quote-author { margin-top: 1rem; font-size: 0.9rem; color: var(--soil-rich); } /* Gallery */ .gallery-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(280px, 1fr)); gap: 1.5rem; } .gallery-item { position: relative; overflow: hidden; aspect-ratio: 4/3; cursor: pointer; } .gallery-item img { width: 100%; height: 100%; object-fit: cover; transition: transform 0.5s ease; } .gallery-item:hover img { transform: scale(1.05); } .gallery-item-caption { position: absolute; bottom: 0; left: 0; right: 0; padding: 1.5rem; background: linear-gradient(to top, rgba(0, 0, 0, 0.7), transparent); color: white; transform: translateY(100%); transition: transform 0.3s ease; } .gallery-item:hover .gallery-item-caption { transform: translateY(0); } .gallery-item-caption h4 { font-size: 1rem; margin-bottom: 0.3rem; } .gallery-item-caption p { font-size: 0.8rem; opacity: 0.8; margin: 0; } /* Activity Items */ .activity-list { display: flex; flex-direction: column; gap: 1.5rem; } .activity-item { display: flex; align-items: flex-start; gap: 2rem; padding: 2rem; background: var(--cream); border: 1px solid var(--root-tan); transition: var(--transition-base); position: relative; overflow: hidden; } .activity-item::after { content: ''; position: absolute; left: 0; top: 0; bottom: 0; width: 4px; background: var(--moss-green); transform: scaleY(0); transition: transform 0.3s ease; } .activity-item:hover { box-shadow: var(--shadow-soft); } .activity-icon { width: 60px; height: 60px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--sand-light); border-radius: 50%; } .activity-icon svg { width: 28px; height: 28px; stroke: var(--leaf-green); fill: none; stroke-width: 1.5; } .activity-content h3 { margin-bottom: 0.5rem; color: var(--earth-dark); } .activity-content p { color: var(--soil-rich); font-size: 0.95rem; margin: 0; } /* Activity Number (for numbered steps) */ .activity-number { width: 60px; height: 60px; flex-shrink: 0; display: flex; align-items: center; justify-content: center; background: var(--leaf-green); color: var(--cream); border-radius: 50%; font-family: var(--font-serif); font-size: 1.5rem; font-weight: 700; } /* CTA Section */ .cta-buttons { display: flex; flex-wrap: wrap; justify-content: center; gap: 1rem; } .cta-text { font-size: 1.1rem; max-width: 600px; margin: 0 auto 2rem; opacity: 0.9; line-height: 2; text-align: center; } /* Buttons */ .btn { display: inline-block; padding: 1rem 2.5rem; font-family: var(--font-serif); font-size: 0.95rem; letter-spacing: 0.1em; text-align: center; cursor: pointer; transition: var(--transition-base); border: 2px solid transparent; } .btn-primary { background: var(--leaf-green); color: var(--cream); } .btn-primary:hover { background: var(--leaf-dark); color: var(--cream); } .btn-outline { background: transparent; border-color: var(--cream); color: var(--cream); } .btn-outline:hover { background: var(--cream); color: var(--leaf-green); } .btn-light { background: var(--cream); color: var(--leaf-green); } .btn-light:hover { background: transparent; border-color: var(--cream); color: var(--cream); } .btn-outline-dark { background: transparent; border-color: var(--earth-dark); color: var(--earth-dark); } .btn-outline-dark:hover { background: var(--earth-dark); color: var(--cream); } /* Two Column Layout */ .two-col { display: grid; grid-template-columns: 1fr 1fr; gap: 4rem; align-items: center; } .two-col-content h2 { margin-bottom: 1.5rem; } .two-col-image { position: relative; } .two-col-image img { width: 100%; object-fit: cover; } /* Removed decorative border for simpler design */ /* Prose Content */ .prose { font-size: 1.05rem; line-height: 2; color: var(--earth-dark); } .prose h2 { margin: 3.5rem 0 1.5rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-subtle); color: var(--earth-dark); scroll-margin-top: 90px; } .prose h3 { margin: 2rem 0 1rem; color: var(--earth-dark); } .prose ul, .prose ol { margin: 1.5rem 0; padding-left: 1.5rem; } .prose li { margin-bottom: 0.8rem; } .prose strong { color: var(--earth-dark); font-weight: 500; } .prose table { width: 100%; border-collapse: collapse; margin: 2rem 0; font-size: 0.95rem; line-height: 1.7; } .prose thead th { background: var(--sand-light); color: var(--earth-dark); font-weight: 500; text-align: left; padding: 0.75rem 1rem; border-bottom: 2px solid var(--clay); } .prose tbody td { padding: 0.75rem 1rem; border-bottom: 1px solid rgba(201, 184, 163, 0.5); vertical-align: top; } .prose tbody tr:last-child td { border-bottom: none; } @media (max-width: 720px) { .prose table { display: block; overflow-x: auto; -webkit-overflow-scrolling: touch; } } /* --- Prose: low-level headings ------------------------------------ */ .prose h4 { font-size: 1.05rem; font-weight: 600; margin: 2rem 0 0.8rem; color: var(--earth-dark); } /* Long URLs / tokens must wrap rather than overflow on mobile */ .prose { overflow-wrap: break-word; } /* --- Prose: inline code ------------------------------------------- */ .prose code { font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, 'Liberation Mono', monospace; font-size: 0.875em; background: var(--sand-light); border: 1px solid var(--border-faint); border-radius: 3px; padding: 0.1em 0.4em; color: var(--earth-dark); } /* --- Prose: code blocks (terminal-style panel) --------------------- Fixed dark colors on purpose: a terminal stays dark in both themes, like the footer / anchor sections. */ .prose pre { background: #262219; color: #e8e0d0; margin: 2rem 0; padding: 1.25rem 1.5rem; border-radius: 4px; overflow-x: auto; scrollbar-width: thin; line-height: 1.75; font-size: 0.875rem; } .prose pre code { background: transparent; border: none; border-radius: 0; padding: 0; color: inherit; font-size: inherit; } /* --- Prose: blockquote (dialogue-template callout) ------------------ The book's 「Claudeに聞いてみよう」 boxes are blockquotes: render them as a distinct prompt card the reader copies and fills in. */ .prose blockquote { background: rgba(122, 154, 109, 0.08); border-left: 3px solid var(--moss-green); border-radius: 0 4px 4px 0; margin: 1.75rem 0; padding: 1.25rem 1.5rem; font-size: 0.97em; } .prose blockquote p { margin-bottom: 0.8rem; } .prose blockquote p:last-child { margin-bottom: 0; } .prose blockquote pre { margin: 1rem 0; } /* --- Prose: horizontal rule (section break before footer) ---------- */ .prose hr { border: none; border-top: 1px solid var(--border-subtle); max-width: 16rem; margin: 3rem auto; } /* Light Farming specific */ .data-box { background: var(--sand-light); border-left: 4px solid var(--moss-green); padding: 1.5rem 2rem; margin: 2rem 0; } .data-box h4 { font-size: 1rem; color: var(--leaf-dark); margin-bottom: 1rem; } .data-box ul { list-style: none; padding: 0; margin: 0; } .data-box li { padding: 0.5rem 0; border-bottom: 1px solid var(--border-faint); font-size: 0.95rem; } .data-box li:last-child { border-bottom: none; } .data-box .value { font-weight: 500; color: var(--leaf-dark); } /* Footer */ .footer { background: var(--footer-bg); color: var(--footer-text); padding: 4rem 2rem 2rem; } .footer-content { max-width: 1100px; margin: 0 auto; display: grid; grid-template-columns: 2fr 1fr 1fr; gap: 3rem; } .footer-about h3 { color: var(--footer-heading); margin-bottom: 1rem; } .footer-about p { font-size: 0.9rem; line-height: 1.8; } .footer-nav h4, .footer-contact h4 { color: var(--footer-heading); font-size: 0.9rem; letter-spacing: 0.1em; margin-bottom: 1.5rem; } .footer-nav ul { list-style: none; } .footer-nav a { color: var(--footer-text); font-size: 0.9rem; display: block; padding: 0.4rem 0; } .footer-nav a:hover { color: var(--footer-heading); } .footer-bottom { max-width: 1100px; margin: 3rem auto 0; padding-top: 2rem; border-top: 1px solid rgba(255, 255, 255, 0.1); text-align: center; } .footer-quote { font-family: var(--font-serif); font-size: 1rem; color: var(--footer-heading); margin-bottom: 1rem; opacity: 0.8; } .footer-copyright { font-size: 0.8rem; opacity: 0.6; } /* Animations */ @keyframes fadeUp { from { opacity: 0; transform: translateY(30px); } to { opacity: 1; transform: translateY(0); } } @keyframes scrollPulse { 0%, 100% { transform: scaleY(1); opacity: 0.5; } 50% { transform: scaleY(1.2); opacity: 1; } } .fade-in { /* fade-in disabled for performance and CSP compatibility */ } /* Simplified scroll animation */ @keyframes scrollPulse { 0%, 100% { opacity: 0.5; } 50% { opacity: 1; } } /* Responsive */ @media (max-width: 900px) { .two-col { grid-template-columns: 1fr; gap: 2rem; } .two-col-image::after { display: none; } .footer-content { grid-template-columns: 1fr; gap: 2rem; } } @media (max-width: 768px) { .nav { display: none; position: absolute; top: 100%; left: 0; right: 0; background: var(--cream); flex-direction: column; align-items: stretch; padding: 1.5rem 2rem; gap: 0; border-bottom: 1px solid var(--root-tan); } .nav.active { display: flex; } .nav a { padding: 0.8rem 0; border-bottom: 1px solid var(--border-faint); } .nav-toggle { display: flex; } /* Accordion submenu inside the mobile nav */ .nav-group { border-bottom: 1px solid var(--border-faint); } .nav-parent { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 0.8rem 0; text-align: left; } .nav-submenu { position: static; display: none; background: transparent; border: none; box-shadow: none; padding: 0 0 0.5rem 1rem; min-width: 0; } .nav-group.open .nav-submenu { display: block; } .nav-submenu a { padding: 0.6rem 0; border-bottom: 1px solid var(--border-faint); } .nav-submenu a:last-child { border-bottom: none; } .nav-group .nav-parent, .nav-submenu a { white-space: normal; } .section { padding: 3rem 0; } .activity-item { flex-direction: column; gap: 1rem; } .hero { padding: 8rem 1.5rem 3rem; } .page-hero.page-hero-noimg { padding: 6.5rem 1.25rem 1rem; } .page-hero { padding: 8rem 1.5rem 3rem; } } /* Utility Classes */ .text-center { text-align: center; } .mb-0 { margin-bottom: 0; } .mb-1 { margin-bottom: 1rem; } .mb-2 { margin-bottom: 2rem; } .mb-3 { margin-bottom: 3rem; } .mt-2 { margin-top: 2rem; } .mt-3 { margin-top: 3rem; } /* ============================================================ Series TOC sidebar (Wikipedia-style) for insights / book ============================================================ */ /* Two-column layout */ .section-with-sidebar { padding: 2rem 1rem 4rem; } .article-layout { display: grid; grid-template-columns: 260px minmax(0, 1fr); gap: 2.5rem; max-width: 1280px; margin: 0 auto; align-items: start; } .article-main { min-width: 0; /* prevent grid blowout from wide pre/code blocks */ max-width: 760px; } /* Breadcrumb */ .breadcrumb { font-size: 0.8rem; color: var(--soil-rich, #6b5b3a); margin-bottom: 1.5rem; padding-bottom: 0.75rem; border-bottom: 1px solid var(--border-subtle); line-height: 1.6; } .breadcrumb a { color: var(--leaf-green, #5a8a4a); text-decoration: none; } .breadcrumb a:hover { text-decoration: underline; } .breadcrumb .crumb-sep { color: var(--soil-rich, #6b5b3a); opacity: 0.6; margin: 0 0.15rem; } .breadcrumb .crumb-part { color: var(--earth-dark, #3a2e1f); } .breadcrumb .crumb-current { color: var(--earth-dark, #3a2e1f); font-weight: 600; } /* Sidebar */ .series-toc { position: sticky; top: 90px; align-self: start; max-height: calc(100vh - 110px); overflow-y: auto; overscroll-behavior: contain; font-size: 0.85rem; line-height: 1.5; padding-right: 0.5rem; /* Keep the sidebar's own scrollbar discreet — it sits between the TOC and the article and must not read as a splitter. */ scrollbar-width: thin; scrollbar-color: var(--border-subtle) transparent; } .series-toc::-webkit-scrollbar { width: 6px; } .series-toc::-webkit-scrollbar-track { background: transparent; } .series-toc::-webkit-scrollbar-thumb { background: var(--border-subtle); border-radius: 3px; } .series-toc:hover::-webkit-scrollbar-thumb { background: var(--clay); } .series-toc-close { display: none; /* mobile only */ position: absolute; top: 0.5rem; right: 0.75rem; background: none; border: none; font-size: 1.8rem; line-height: 1; color: var(--earth-dark, #3a2e1f); cursor: pointer; padding: 0.25rem 0.5rem; } .series-toc-inner { padding: 0.5rem 0; } .series-toc-title { font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--soil-rich, #6b5b3a); margin: 0 0 1rem; padding-bottom: 0.5rem; border-bottom: 1px solid var(--border-subtle); font-weight: 500; } .series-toc-title a { color: inherit; text-decoration: none; } .series-toc-title a:hover { color: var(--leaf-green, #5a8a4a); } .toc-part { margin-bottom: 1.5rem; } .toc-part-title { font-size: 0.78rem; font-weight: 600; color: var(--earth-dark, #3a2e1f); margin: 0 0 0.5rem; padding: 0.25rem 0; letter-spacing: 0.05em; } .toc-chapters { list-style: none; margin: 0; padding: 0; } .toc-chapters li { margin: 0; padding: 0; } .toc-chapter { display: block; padding: 0.3rem 0.5rem; color: var(--soil-rich, #6b5b3a); text-decoration: none; border-left: 2px solid transparent; transition: background-color 0.12s, border-color 0.12s, color 0.12s; line-height: 1.4; } .toc-chapter:hover { background-color: rgba(122, 154, 109, 0.08); color: var(--earth-dark, #3a2e1f); } .toc-chapter.is-current { background-color: rgba(122, 154, 109, 0.15); border-left-color: var(--moss-green, #7a9a6d); color: var(--earth-dark, #3a2e1f); font-weight: 600; } .toc-num { display: inline-block; min-width: 1.8em; color: var(--soil-rich, #6b5b3a); opacity: 0.75; font-variant-numeric: tabular-nums; font-size: 0.8em; } .toc-chapter.is-current .toc-num { color: var(--moss-green, #7a9a6d); opacity: 1; } .toc-title { display: inline; } /* In-page section list under the current chapter (built by main.js), highlighted by scrollspy while reading. */ .toc-sections { list-style: none; margin: 0.2rem 0 0.6rem; padding-left: 1.6rem; } .toc-sections li { margin: 0; padding: 0; } .toc-sections a { display: block; padding: 0.2rem 0.5rem; font-size: 0.8rem; line-height: 1.45; color: var(--soil-rich, #6b5b3a); border-left: 2px solid var(--border-subtle); text-decoration: none; transition: background-color 0.12s, border-color 0.12s, color 0.12s; } .toc-sections a:hover { background-color: rgba(122, 154, 109, 0.08); color: var(--earth-dark, #3a2e1f); } .toc-sections a.is-active { background-color: rgba(122, 154, 109, 0.12); border-left-color: var(--moss-green, #7a9a6d); color: var(--earth-dark, #3a2e1f); font-weight: 600; } .toc-related { margin-top: 1.5rem; padding-top: 1rem; border-top: 1px solid var(--border-subtle); } .toc-related-title { font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.15em; color: var(--soil-rich, #6b5b3a); margin: 0 0 0.5rem; } .toc-related ul { list-style: none; margin: 0; padding: 0; } .toc-related li { margin: 0; } .toc-related a { display: block; padding: 0.3rem 0.5rem; color: var(--leaf-green, #5a8a4a); text-decoration: none; font-size: 0.82rem; } .toc-related a:hover { background-color: rgba(122, 154, 109, 0.08); } /* Mobile TOC toggle */ .series-toc-toggle { display: none; /* desktop hides */ position: fixed; bottom: 1.25rem; right: 1.25rem; z-index: 90; background: var(--earth-dark, #3a2e1f); color: var(--cream, #f5ead7); border: none; border-radius: 999px; padding: 0.7rem 1.2rem; font-size: 0.9rem; box-shadow: 0 4px 14px rgba(0,0,0,0.25); cursor: pointer; gap: 0.4rem; align-items: center; } .series-toc-toggle-icon { font-size: 1.1em; } .series-toc-backdrop { display: none; position: fixed; inset: 0; background: rgba(0,0,0,0.4); z-index: 99; opacity: 0; transition: opacity 0.2s; } /* Narrow viewport: single column + slide-in sidebar */ @media (max-width: 960px) { .article-layout { grid-template-columns: 1fr; gap: 0; } .article-main { max-width: 100%; } .series-toc { position: fixed; top: 0; left: 0; width: min(85vw, 360px); height: 100vh; max-height: none; margin: 0; background: var(--cream, #f5ead7); box-shadow: 2px 0 14px rgba(0,0,0,0.2); padding: 3.5rem 1rem 1.5rem 1.25rem; z-index: 100; transform: translateX(-100%); transition: transform 0.25s ease; } .series-toc.is-open { transform: translateX(0); } .series-toc-close { display: block; } .series-toc-toggle { display: inline-flex; } .series-toc-backdrop.is-open { display: block; opacity: 1; } /* Lock background scroll when sidebar is open */ body.series-toc-open { overflow: hidden; } } /* Print: hide all TOC chrome */ @media print { .series-toc, .series-toc-toggle, .series-toc-backdrop, .breadcrumb { display: none !important; } .article-layout { grid-template-columns: 1fr; } } /* ============================================================ Theme toggle (light / dark) ============================================================ */ .theme-toggle { background: none; border: 1px solid var(--border-subtle); border-radius: 999px; padding: 0.25rem 0.55rem; cursor: pointer; color: var(--earth-brown); font-size: 0.95rem; line-height: 1; transition: background-color 0.15s, border-color 0.15s, color 0.15s; display: inline-flex; align-items: center; gap: 0.2rem; margin-left: 0.5rem; } .theme-toggle:hover { background: var(--hover-tint); color: var(--earth-dark); border-color: var(--moss-green); } .theme-icon { display: inline-block; width: 1em; text-align: center; } /* Show the icon for the OTHER theme — the one the toggle will switch to */ .theme-icon-moon { display: none; } :root[data-theme="dark"] .theme-icon-sun, :root[data-theme="dark"] .theme-icon-moon { display: none; } :root[data-theme="dark"] .theme-icon-sun { display: inline-block; } @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-icon-sun { display: inline-block; } :root:not([data-theme="light"]):not([data-theme="dark"]) .theme-icon-moon { display: none; } } :root[data-theme="light"] .theme-icon-sun { display: none; } :root[data-theme="light"] .theme-icon-moon { display: inline-block; } /* Dark-mode tweaks for the .highlight-box callout — the original warm-cream tint looks off on the dark background. */ :root[data-theme="dark"] .highlight-box { background: rgba(148, 193, 132, 0.07); border-color: rgba(148, 193, 132, 0.2); } @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .highlight-box { background: rgba(148, 193, 132, 0.07); border-color: rgba(148, 193, 132, 0.2); } } /* Mermaid diagrams: invert default white panel in dark mode */ :root[data-theme="dark"] .mermaid, :root[data-theme="dark"] svg[id^="mermaid"] { filter: invert(0.92) hue-rotate(180deg); } @media (prefers-color-scheme: dark) { :root:not([data-theme="light"]) .mermaid, :root:not([data-theme="light"]) svg[id^="mermaid"] { filter: invert(0.92) hue-rotate(180deg); } }