/* Theme variables — light is the default, dark via */ :root { --bg: #eef2f7; --bg-header: linear-gradient(180deg, #ffffff 0%, #f4f7fb 100%); --bg-panel: rgba(255, 255, 255, 0.97); --bg-inset: rgba(241, 245, 249, 0.9); --bg-hover: rgba(100, 116, 139, 0.12); --border: rgba(100, 116, 139, 0.25); --text: #1e293b; --text-dim: #64748b; --accent: #0369a1; --accent-soft: rgba(3, 105, 161, 0.45); --on-accent: #ffffff; --shadow: 0 8px 24px rgba(15, 23, 42, 0.18); --shadow-big: 0 16px 48px rgba(15, 23, 42, 0.22); --radius: 14px; --font: "Inter", "Segoe UI", system-ui, -apple-system, sans-serif; } html[data-theme="dark"] { --bg: #0b1120; --bg-header: linear-gradient(180deg, #0d1526 0%, #0b1120 100%); --bg-panel: rgba(13, 20, 38, 0.96); --bg-inset: rgba(30, 41, 59, 0.5); --bg-hover: rgba(148, 163, 184, 0.18); --border: rgba(148, 163, 184, 0.18); --text: #e2e8f0; --text-dim: #94a3b8; --accent: #7dd3fc; --accent-soft: rgba(125, 211, 252, 0.5); --on-accent: #082f49; --shadow: 0 8px 24px rgba(0, 0, 0, 0.55); --shadow-big: 0 16px 48px rgba(0, 0, 0, 0.6); } * { margin: 0; padding: 0; box-sizing: border-box; } html, body { height: 100%; font-family: var(--font); background: var(--bg); color: var(--text); } body { display: flex; flex-direction: column; overflow: hidden; } /* ---------- Header ---------- */ .topbar { display: grid; grid-template-columns: 1fr auto 1fr; align-items: center; gap: 1rem; padding: 0.7rem 1.2rem; background: var(--bg-header); border-bottom: 1px solid var(--border); z-index: 1100; } .brand { display: flex; align-items: center; gap: 0.75rem; min-width: 0; } .brand-icon { font-size: 1.9rem; filter: drop-shadow(0 0 8px var(--accent-soft)); } .brand-text h1 { font-size: 1.15rem; font-weight: 650; letter-spacing: 0.02em; } .subtitle { font-size: 0.8rem; color: var(--text-dim); margin-top: 0.1rem; } .controls { display: flex; align-items: center; gap: 0.9rem; flex-shrink: 0; } .nav { display: flex; gap: 0.15rem; } .nav a { padding: 0.4rem 0.75rem; border-radius: 8px; font-size: 0.88rem; font-weight: 600; color: var(--text-dim); text-decoration: none; transition: background 0.15s, color 0.15s; } .nav a:hover { color: var(--text); background: var(--bg-hover); } .nav a.active { color: var(--accent); background: var(--bg-hover); } /* Primary nav (Map/List/Learn) centred; secondary controls on the right */ .nav-main { justify-self: center; } .nav-main a { font-size: 0.92rem; padding: 0.45rem 0.9rem; } .controls { justify-self: end; } @media (max-width: 820px) { .topbar { grid-template-columns: minmax(0, 1fr) auto; } .nav-main { grid-column: 1 / -1; grid-row: 2; } .brand-text { min-width: 0; } .brand-text h1 { white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } } .lang-switch { display: flex; border: 1px solid var(--border); border-radius: 999px; overflow: hidden; } .lang-btn { background: transparent; color: var(--text-dim); border: none; padding: 0.42rem 0.95rem; font: inherit; font-size: 0.85rem; font-weight: 600; cursor: pointer; transition: background 0.15s, color 0.15s; } .lang-btn:hover { color: var(--text); } .lang-btn.active { background: var(--accent); color: var(--on-accent); } .gh-link { display: flex; align-items: center; justify-content: center; width: 2.3rem; height: 2.3rem; border: 1px solid var(--border); border-radius: 50%; color: var(--text-dim); transition: background 0.15s, color 0.15s; } .gh-link:hover { background: var(--bg-hover); color: var(--text); } .theme-btn { width: 2.3rem; height: 2.3rem; border: 1px solid var(--border); border-radius: 50%; background: transparent; font-size: 1.05rem; line-height: 1; cursor: pointer; transition: background 0.15s; } .theme-btn:hover { background: var(--bg-hover); } /* ---------- Map ---------- */ main { position: relative; flex: 1; min-height: 0; } #map { position: absolute; inset: 0; background: var(--bg); } .leaflet-container { font-family: var(--font); } /* Observatory marker: emoji in a glowing badge. Fixed dark-navy badge in BOTH themes so it stands out on light and dark tiles alike. */ .obs-marker { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; font-size: 20px; background: radial-gradient(circle at 35% 30%, #1e3a5f, #0b1120); border: 2px solid #38bdf8; border-radius: 50%; box-shadow: 0 0 10px rgba(56, 189, 248, 0.55), 0 2px 6px rgba(0, 0, 0, 0.4); cursor: pointer; transition: transform 0.15s ease, box-shadow 0.15s ease; } .leaflet-marker-icon:hover .obs-marker, .leaflet-marker-icon:focus .obs-marker { transform: scale(1.22); box-shadow: 0 0 18px rgba(56, 189, 248, 0.85), 0 2px 8px rgba(0, 0, 0, 0.5); border-color: #7dd3fc; } /* Cluster badge: same family as the single marker, but shows a count */ .obs-cluster { display: flex; align-items: center; justify-content: center; width: 100%; height: 100%; font-size: 0.85rem; font-weight: 700; color: #e0f2fe; background: radial-gradient(circle at 35% 30%, #1e3a5f, #0b1120); border: 2px solid #38bdf8; border-radius: 50%; box-shadow: 0 0 10px rgba(56, 189, 248, 0.45), 0 2px 6px rgba(0, 0, 0, 0.4); cursor: pointer; transition: transform 0.15s ease; } .leaflet-marker-icon:hover .obs-cluster { transform: scale(1.12); } /* Hover tooltip */ .leaflet-tooltip.obs-tooltip { background: var(--bg-panel); color: var(--text); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); padding: 0.6rem 0.75rem; max-width: 260px; white-space: normal; } .leaflet-tooltip.obs-tooltip::before { display: none; } .tip-name { font-weight: 650; font-size: 0.92rem; margin-bottom: 0.15rem; } .tip-loc { font-size: 0.78rem; color: var(--text-dim); } .tip-stats { display: flex; gap: 1rem; margin-top: 0.55rem; padding-top: 0.55rem; border-top: 1px solid var(--border); } .tip-label { display: block; font-size: 0.6rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.07em; color: var(--text-dim); margin-bottom: 0.15rem; white-space: nowrap; } .tip-value { display: flex; align-items: center; gap: 0.32rem; font-size: 0.83rem; font-weight: 600; white-space: nowrap; } .bortle-dot { display: inline-block; width: 9px; height: 9px; border-radius: 50%; border: 1px solid rgba(100, 116, 139, 0.5); flex-shrink: 0; } .tip-hint { margin-top: 0.55rem; font-size: 0.68rem; color: var(--text-dim); } /* ---------- Bortle scale widget (detail panel) ---------- */ .bortle-cells { display: flex; gap: 3px; margin: 0.3rem 0 0.4rem; } .bortle-cell { flex: 1; height: 9px; border-radius: 2px; opacity: 0.3; } .bortle-cell.active { opacity: 1; height: 13px; margin-top: -2px; outline: 2px solid var(--text); outline-offset: 1px; } .bortle-name { font-size: 0.82rem; font-weight: 600; } /* ---------- Detail panel ---------- */ .panel { position: absolute; top: 0.9rem; right: 0.9rem; bottom: 0.9rem; width: min(400px, calc(100vw - 1.8rem)); background: var(--bg-panel); backdrop-filter: blur(10px); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow-big); overflow-y: auto; padding: 1.3rem 1.3rem 1.5rem; z-index: 1000; animation: slide-in 0.22s ease; } @keyframes slide-in { from { transform: translateX(24px); opacity: 0; } to { transform: none; opacity: 1; } } .panel-close { position: absolute; top: 0.6rem; right: 0.7rem; width: 2rem; height: 2rem; border: none; border-radius: 50%; background: var(--bg-hover); color: var(--text-dim); font-size: 1.25rem; line-height: 1; cursor: pointer; } .panel-close:hover { color: var(--text); } .panel h2 { font-size: 1.2rem; line-height: 1.3; margin: 0.2rem 2rem 0.2rem 0; } .panel .obs-loc { color: var(--text-dim); font-size: 0.85rem; margin-bottom: 0.8rem; } .obs-meta { display: grid; grid-template-columns: auto 1fr; gap: 0.35rem 0.8rem; font-size: 0.83rem; margin: 0.9rem 0; padding: 0.8rem 0.9rem; background: var(--bg-inset); border: 1px solid var(--border); border-radius: 10px; } .obs-meta dt { color: var(--text-dim); } .obs-meta dd { margin: 0; } .panel h3 { font-size: 0.78rem; text-transform: uppercase; letter-spacing: 0.09em; color: var(--accent); margin: 1.1rem 0 0.35rem; } .panel p { font-size: 0.88rem; line-height: 1.55; color: var(--text); } .obs-link { display: inline-block; margin-top: 1rem; color: var(--accent); font-size: 0.85rem; text-decoration: none; border-bottom: 1px solid var(--accent-soft); } .obs-link:hover { border-bottom-color: var(--accent); } .approx-note { font-size: 0.72rem; color: var(--text-dim); font-style: italic; margin-top: 0.8rem; } /* ---------- Map search ---------- */ .map-search { position: absolute; top: 0.9rem; left: 0.9rem; z-index: 1001; width: min(320px, calc(100vw - 1.8rem)); } .map-search input { width: 100%; font: inherit; font-size: 0.88rem; color: var(--text); background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem 0.85rem; box-shadow: var(--shadow); } .map-search input:focus { outline: 2px solid var(--accent-soft); } .map-search input::placeholder { color: var(--text-dim); } .search-results { margin-top: 0.4rem; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px; box-shadow: var(--shadow); overflow: hidden; } .search-hit { display: flex; align-items: center; gap: 0.6rem; width: 100%; padding: 0.55rem 0.75rem; background: transparent; border: none; border-bottom: 1px solid var(--border); font: inherit; color: var(--text); text-align: left; cursor: pointer; } .search-hit:last-child { border-bottom: none; } .search-hit:hover, .search-hit:focus { background: var(--bg-hover); } .hit-emoji { font-size: 1.1rem; flex-shrink: 0; } .hit-text { display: flex; flex-direction: column; min-width: 0; } .hit-text strong { font-size: 0.85rem; font-weight: 650; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .hit-text small { font-size: 0.72rem; color: var(--text-dim); white-space: nowrap; overflow: hidden; text-overflow: ellipsis; } .search-empty { padding: 0.6rem 0.75rem; font-size: 0.82rem; color: var(--text-dim); } /* Reset-view button */ .reset-view-btn { width: 34px; height: 34px; margin-bottom: 6px; border: 1px solid var(--border); border-radius: 8px; background: var(--bg-panel); font-size: 1.05rem; line-height: 1; cursor: pointer; box-shadow: var(--shadow); } .reset-view-btn:hover { background: var(--bg-hover); } /* ---------- Legend ---------- */ .legend { position: absolute; left: 0.9rem; bottom: 1.6rem; z-index: 1000; background: var(--bg-panel); border: 1px solid var(--border); border-radius: 10px; padding: 0.6rem 0.8rem; box-shadow: var(--shadow); max-width: 230px; } .legend-icons { display: flex; flex-wrap: wrap; gap: 0.35rem 0.7rem; font-size: 0.72rem; color: var(--text); margin-bottom: 0.55rem; padding-bottom: 0.55rem; border-bottom: 1px solid var(--border); } .legend-title { font-size: 0.7rem; font-weight: 650; color: var(--text-dim); display: block; margin-bottom: 0.4rem; } .legend-scale { display: flex; gap: 3px; } .legend-cell { flex: 1; display: flex; flex-direction: column; align-items: center; gap: 3px; } .legend-swatch { width: 100%; height: 9px; border-radius: 2px; } .legend-num { font-size: 0.58rem; color: var(--text-dim); line-height: 1; } .legend-ends { display: flex; justify-content: space-between; font-size: 0.63rem; color: var(--text-dim); margin-top: 0.3rem; } .noscript { padding: 2rem; text-align: center; } /* ---------- Content pages (list / about / contact) ---------- The body never scrolls; content scrolls inside .page-scroll below the header, so the scrollbar can't shift the topbar between pages. */ .page-scroll { flex: 1; min-height: 0; overflow-y: auto; scrollbar-gutter: stable; } .page { width: 100%; max-width: 760px; margin: 0 auto; padding: 2.2rem 1.2rem 4rem; } .page--wide { max-width: 1140px; } .page h2 { font-size: 1.5rem; margin-bottom: 1rem; } .page h3 { font-size: 0.85rem; text-transform: uppercase; letter-spacing: 0.09em; color: var(--accent); margin: 1.8rem 0 0.5rem; } .page p { line-height: 1.65; margin-bottom: 0.9rem; font-size: 0.95rem; } .page a { color: var(--accent); } .page-note { color: var(--text-dim); font-size: 0.85rem; font-style: italic; } .subject-examples { margin: 0 0 0.9rem 1.2rem; } .subject-examples li { margin-bottom: 0.45rem; font-size: 0.95rem; line-height: 1.55; } .email-link { font-weight: 650; font-size: 1.05em; } /* Filters */ .filters { display: flex; flex-wrap: wrap; gap: 0.6rem; margin-bottom: 0.9rem; } .filters input[type="search"], .filters select { font: inherit; font-size: 0.88rem; color: var(--text); background: var(--bg-panel); border: 1px solid var(--border); border-radius: 9px; padding: 0.5rem 0.7rem; } .filters input[type="search"] { flex: 1 1 220px; min-width: 180px; } .filters select { flex: 0 1 auto; cursor: pointer; } .filters input:focus, .filters select:focus { outline: 2px solid var(--accent-soft); } .result-count { color: var(--text-dim); font-size: 0.82rem; margin-bottom: 1.1rem; } /* Observatory cards */ .cards { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 0.9rem; } .obs-card { display: flex; flex-direction: column; gap: 0.4rem; background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius); padding: 1rem 1.1rem; } .obs-card h3 { font-size: 1rem; text-transform: none; letter-spacing: normal; color: var(--text); margin: 0; line-height: 1.35; } .card-loc { color: var(--text-dim); font-size: 0.82rem; } .card-meta { display: flex; flex-wrap: wrap; gap: 0.35rem; color: var(--text-dim); font-size: 0.78rem; } .card-bortle { display: flex; align-items: center; gap: 0.4rem; font-size: 0.8rem; font-weight: 600; } .card-links { display: flex; gap: 1rem; margin-top: 0.35rem; } .card-links a { font-size: 0.83rem; font-weight: 600; color: var(--accent); text-decoration: none; } .card-links a:hover { text-decoration: underline; } /* ---------- Learn page ---------- */ .learn { max-width: 920px; } .learn-section { margin-top: 4.2rem; } /* Chapter headers: big ghost number + title + lead */ .chapter-head { display: flex; align-items: flex-start; gap: 1.1rem; margin-bottom: 1.5rem; } .ch-num { font-size: 3rem; font-weight: 800; line-height: 1; letter-spacing: -0.04em; color: var(--accent); opacity: 0.22; font-variant-numeric: tabular-nums; user-select: none; margin-top: 0.1rem; } .page .ch-title { font-size: 1.55rem; font-weight: 750; letter-spacing: -0.015em; text-transform: none; color: var(--text); margin: 0 0 0.45rem; } .page .ch-lead { color: var(--text-dim); max-width: 64ch; line-height: 1.65; font-size: 0.95rem; margin: 0; } /* Shared card base for the interactive widgets */ .learn-card { background: var(--bg-panel); border: 1px solid var(--border); border-radius: var(--radius); box-shadow: var(--shadow); } /* Panel pop-in shared by interactive widgets */ @keyframes pop-in { from { transform: translateY(6px); opacity: 0; } to { transform: none; opacity: 1; } } .pop { animation: pop-in 0.25s ease; } /* Hero */ .learn-hero { position: relative; overflow: hidden; border-radius: 18px; border: 1px solid rgba(125, 211, 252, 0.2); background: radial-gradient(900px 420px at 85% -20%, rgba(125, 211, 252, 0.16), transparent 60%), radial-gradient(700px 380px at 8% 115%, rgba(56, 189, 248, 0.13), transparent 60%), linear-gradient(160deg, #0b1120 0%, #101b36 55%, #16233f 100%); color: #e2e8f0; padding: 3rem 2.4rem 2.6rem; box-shadow: var(--shadow-big); } .hero-inner { position: relative; z-index: 1; } .learn-hero h2 { font-size: clamp(1.8rem, 4.5vw, 2.5rem); letter-spacing: -0.02em; margin-bottom: 0.8rem; } .learn-hero h2 em { font-style: normal; color: #7dd3fc; } .learn-hero p { line-height: 1.7; color: #b9c5d8; max-width: 58ch; font-size: 1rem; } .hero-stars { position: absolute; inset: 0; z-index: 0; } .hero-stars span { position: absolute; border-radius: 50%; background: #e0f2fe; animation: twinkle 3s ease-in-out infinite; } @keyframes twinkle { 0%, 100% { opacity: 0.12; } 50% { opacity: 0.9; } } .hero-stats { display: grid; grid-template-columns: repeat(4, 1fr); gap: 0.7rem; margin-top: 1.9rem; } .hero-stat { padding: 0.75rem 0.95rem; background: rgba(148, 163, 184, 0.1); border: 1px solid rgba(148, 163, 184, 0.22); border-radius: 12px; } .hero-stat strong { display: block; font-size: 1.15rem; color: #7dd3fc; letter-spacing: -0.01em; } .hero-stat span { font-size: 0.73rem; color: #8fa2bd; } /* Type explorer */ .type-tabs { display: grid; grid-template-columns: repeat(5, 1fr); gap: 0.6rem; margin-bottom: 0.9rem; } .type-tab { position: relative; display: flex; flex-direction: column; align-items: center; gap: 0.35rem; padding: 0.9rem 0.4rem 0.75rem; font: inherit; font-size: 0.86rem; font-weight: 650; color: var(--text-dim); background: var(--bg-panel); border: 1px solid var(--border); border-radius: 12px; cursor: pointer; transition: color 0.15s, border-color 0.15s, transform 0.15s, box-shadow 0.15s, background 0.15s; } .type-tab::after { content: ""; position: absolute; top: -1px; left: 22%; right: 22%; height: 3px; border-radius: 0 0 3px 3px; background: var(--accent); opacity: 0; transition: opacity 0.15s; } .type-tab:hover { color: var(--text); transform: translateY(-2px); box-shadow: var(--shadow); } .type-tab.active { color: var(--accent); border-color: var(--accent-soft); background: var(--bg-hover); } .type-tab.active::after { opacity: 1; } .type-tab-emoji { font-size: 1.7rem; } .type-panel { overflow: hidden; } .type-head { display: flex; align-items: center; gap: 0.9rem; padding: 1rem 1.4rem; background: var(--bg-inset); border-bottom: 1px solid var(--border); } .type-big-emoji { font-size: 2rem; filter: drop-shadow(0 0 10px var(--accent-soft)); } .type-name { font-size: 1.1rem; font-weight: 750; } .type-tagline { font-size: 0.83rem; color: var(--text-dim); } .type-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 1.2rem 1.7rem; padding: 1.3rem 1.4rem 1.4rem; } .type-block h4 { display: flex; align-items: center; gap: 0.4rem; font-size: 0.72rem; text-transform: uppercase; letter-spacing: 0.08em; color: var(--accent); margin-bottom: 0.35rem; } .type-block h4 span { font-size: 0.85rem; } .type-block p { font-size: 0.88rem; line-height: 1.65; margin: 0; color: var(--text); } /* Spectrum explorer */ .spectrum-bar { display: flex; gap: 4px; margin-bottom: 0.35rem; } .spec-band { display: flex; flex-direction: column; align-items: center; gap: 1px; min-width: 0; padding: 0.6rem 0.25rem 0.5rem; font: inherit; font-size: 0.76rem; font-weight: 700; color: #fff; text-shadow: 0 1px 2px rgba(0, 0, 0, 0.35); background: var(--band-color); border: none; border-radius: 9px; cursor: pointer; white-space: nowrap; overflow: hidden; opacity: 0.45; transition: opacity 0.15s, transform 0.15s, box-shadow 0.15s; } .spec-band small { font-size: 0.58rem; font-weight: 600; opacity: 0.9; } .spec-band:hover { opacity: 0.75; } .spec-band.active { opacity: 1; transform: translateY(-3px); box-shadow: 0 6px 16px -4px var(--band-color); } .spectrum-scale { display: flex; justify-content: space-between; font-size: 0.68rem; color: var(--text-dim); margin-bottom: 1rem; } .spectrum-panel { overflow: hidden; } .spec-head { display: flex; align-items: center; flex-wrap: wrap; gap: 0.6rem; padding: 0.9rem 1.4rem; background: var(--bg-inset); border-bottom: 1px solid var(--border); font-size: 1.02rem; } .spec-dot { width: 13px; height: 13px; border-radius: 50%; background: var(--band-color); box-shadow: 0 0 8px var(--band-color); } .spec-wl { font-size: 0.75rem; color: var(--text-dim); font-weight: 600; } .spec-ground { margin-left: auto; font-size: 0.75rem; font-weight: 600; color: var(--text-dim); background: var(--bg-panel); border: 1px solid var(--border); border-radius: 999px; padding: 0.25rem 0.7rem; } .spec-body { padding: 1.1rem 1.4rem 1.2rem; } .spec-body p { font-size: 0.88rem; line-height: 1.65; margin: 0 0 0.6rem; } .spec-note { color: var(--text-dim); } .spec-scopes { margin-bottom: 0 !important; } /* Altitude widget */ .alt-widget { display: grid; grid-template-columns: 1.05fr 1fr; gap: 1.5rem; padding: 1.4rem; } .alt-scene { position: relative; min-height: 260px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); } .alt-stars { position: absolute; inset: 0; opacity: 0; transition: opacity 0.2s; } .alt-stars span { position: absolute; border-radius: 50%; background: #e2e8f0; } .alt-mountain { position: absolute; inset: 0; width: 100%; height: 100%; } .alt-dome { position: absolute; left: 27%; bottom: 5%; font-size: 1.4rem; transform: translateX(-50%); filter: drop-shadow(0 2px 4px rgba(0, 0, 0, 0.4)); z-index: 2; transition: bottom 0.12s linear, left 0.12s linear; } .alt-haze { position: absolute; left: 0; right: 0; bottom: 0; height: 55%; background: linear-gradient(to top, rgba(203, 213, 225, 0.8), transparent); transition: opacity 0.2s; z-index: 1; } .alt-controls input[type="range"] { width: 100%; accent-color: var(--accent); margin-bottom: 0.6rem; } .alt-big { font-size: 2rem; font-weight: 800; color: var(--accent); font-variant-numeric: tabular-nums; letter-spacing: -0.02em; line-height: 1.1; } .alt-atmo { font-size: 0.78rem; font-weight: 650; color: var(--text-dim); margin: 0.25rem 0 0.35rem; } .alt-atmo-bar { height: 8px; border-radius: 4px; background: var(--bg-inset); border: 1px solid var(--border); overflow: hidden; margin-bottom: 0.9rem; } .alt-atmo-fill { height: 100%; width: 0; background: linear-gradient(90deg, var(--accent), #38bdf8); transition: width 0.12s linear; } .alt-desc { font-size: 0.88rem; line-height: 1.62; margin-bottom: 0.8rem; } .alt-example { font-size: 0.8rem; color: var(--text-dim); background: var(--bg-inset); border: 1px solid var(--border); border-radius: 8px; padding: 0.55rem 0.75rem; } /* Bortle sky simulator */ .bortle-widget { display: grid; grid-template-columns: 1fr 1fr; gap: 1.5rem; padding: 1.4rem; } .bortle-sky { position: relative; min-height: 260px; border-radius: 12px; overflow: hidden; border: 1px solid var(--border); transition: background 0.35s ease; } .milky-way { position: absolute; top: -30%; left: -20%; width: 150%; height: 55%; transform: rotate(-24deg); background: radial-gradient(ellipse 60% 100% at 50% 50%, rgba(226, 232, 240, 0.5), rgba(226, 232, 240, 0.14) 55%, transparent 75%); filter: blur(6px); transition: opacity 0.35s ease; } .bortle-stars span { position: absolute; border-radius: 50%; background: #f1f5f9; transition: opacity 0.35s ease; } .bortle-horizon { position: absolute; left: 0; right: 0; bottom: 0; height: 14%; background: linear-gradient(to top, rgba(2, 6, 23, 0.65), transparent); } .bortle-controls input[type="range"] { width: 100%; accent-color: var(--accent); } .bortle-ticks { display: flex; justify-content: space-between; padding: 0 5px; font-size: 0.66rem; color: var(--text-dim); font-variant-numeric: tabular-nums; margin-bottom: 0.7rem; } .bortle-readout { display: flex; align-items: center; gap: 0.65rem; margin-bottom: 0.55rem; } .bortle-chip { font-size: 0.78rem; font-weight: 700; padding: 0.25rem 0.65rem; border-radius: 999px; } .bortle-class-name { font-weight: 700; font-size: 0.98rem; } .bortle-desc { font-size: 0.85rem; color: var(--text-dim); margin-bottom: 0.6rem; } .bortle-see { font-size: 0.88rem; line-height: 1.62; } /* Timeline */ .timeline { position: relative; margin-top: 0.4rem; } .timeline::before { content: ""; position: absolute; top: 8px; bottom: 8px; left: 7px; width: 2px; background: linear-gradient(to bottom, var(--accent-soft) 0%, var(--accent-soft) 80%, transparent); } .tl-item { position: relative; padding-left: 2rem; } .tl-head { position: relative; display: flex; align-items: center; gap: 0.8rem; width: 100%; padding: 0.6rem 0.6rem; font: inherit; text-align: left; background: transparent; border: none; color: var(--text); cursor: pointer; border-radius: 10px; transition: background 0.15s; } .tl-head:hover { background: var(--bg-hover); } .tl-dot { position: absolute; left: calc(-2rem + 2px); top: 50%; transform: translateY(-50%); width: 12px; height: 12px; border-radius: 50%; background: var(--accent); border: 2px solid var(--bg); box-shadow: 0 0 6px var(--accent-soft); } .tl-year { flex-shrink: 0; width: 5.4rem; box-sizing: border-box; text-align: center; font-size: 0.72rem; font-weight: 700; color: var(--accent); background: var(--bg-hover); border-radius: 999px; padding: 0.22rem 0.4rem; font-variant-numeric: tabular-nums; } .tl-title { font-size: 0.94rem; font-weight: 650; flex: 1; min-width: 0; } .tl-caret { color: var(--text-dim); transition: transform 0.2s; font-size: 0.8rem; } .tl-item.open .tl-caret { transform: rotate(180deg); } .tl-body { max-height: 0; overflow: hidden; transition: max-height 0.3s ease; } .tl-item.open .tl-body { max-height: 24rem; } .tl-body p { font-size: 0.87rem; line-height: 1.62; color: var(--text-dim); margin: 0; padding: 0.1rem 2.2rem 0.9rem calc(0.6rem + 5.4rem + 0.8rem); } /* Quiz */ .quiz-card { padding: 1.4rem 1.5rem; } .quiz-progress { font-size: 0.72rem; font-weight: 700; text-transform: uppercase; letter-spacing: 0.08em; color: var(--text-dim); margin-bottom: 0.45rem; } .quiz-bar { height: 6px; border-radius: 3px; background: var(--bg-inset); border: 1px solid var(--border); overflow: hidden; margin-bottom: 1.1rem; } .quiz-bar-fill { height: 100%; background: var(--accent); transition: width 0.25s; } .quiz-q { font-size: 1.05rem; font-weight: 700; line-height: 1.45; margin-bottom: 1rem; } .quiz-options { display: flex; flex-direction: column; gap: 0.5rem; } .quiz-opt { display: flex; align-items: center; gap: 0.7rem; padding: 0.65rem 0.85rem; font: inherit; font-size: 0.88rem; text-align: left; color: var(--text); background: var(--bg-inset); border: 1px solid var(--border); border-radius: 10px; cursor: pointer; transition: border-color 0.15s, background 0.15s, transform 0.1s; } .quiz-opt:hover:not(:disabled) { border-color: var(--accent); transform: translateX(3px); } .quiz-opt:disabled { cursor: default; opacity: 0.7; } .quiz-letter { display: inline-flex; align-items: center; justify-content: center; width: 1.55rem; height: 1.55rem; flex-shrink: 0; border-radius: 7px; background: var(--bg-hover); font-size: 0.75rem; font-weight: 750; color: var(--text-dim); } .quiz-opt.correct { border-color: #16a34a; background: rgba(22, 163, 74, 0.14); opacity: 1; font-weight: 650; } .quiz-opt.correct .quiz-letter { background: #16a34a; color: #fff; } .quiz-opt.wrong { border-color: #dc2626; background: rgba(220, 38, 38, 0.12); opacity: 1; } .quiz-opt.wrong .quiz-letter { background: #dc2626; color: #fff; } .quiz-why { margin-top: 0.9rem; font-size: 0.85rem; line-height: 1.62; color: var(--text-dim); background: var(--bg-inset); border: 1px solid var(--border); border-radius: 10px; padding: 0.7rem 0.9rem; } .quiz-next { margin-top: 0.9rem; padding: 0.6rem 1.2rem; font: inherit; font-size: 0.88rem; font-weight: 700; color: var(--on-accent); background: var(--accent); border: none; border-radius: 10px; cursor: pointer; transition: transform 0.12s, box-shadow 0.12s; } .quiz-next:hover { transform: translateY(-1px); box-shadow: 0 4px 14px var(--accent-soft); } .quiz-score { text-align: center; padding: 0.6rem 0; } .quiz-score-big { font-size: 2.6rem; font-weight: 800; color: var(--accent); margin-bottom: 0.4rem; } .quiz-score p { font-size: 1rem; margin-bottom: 0.7rem; } /* CTA */ .learn-cta { margin-top: 4rem; text-align: center; padding: 2.4rem 1.5rem; border-radius: 18px; border: 1px solid rgba(125, 211, 252, 0.2); background: radial-gradient(700px 300px at 50% -40%, rgba(125, 211, 252, 0.15), transparent 65%), linear-gradient(160deg, #0b1120 0%, #101b36 60%, #16233f 100%); box-shadow: var(--shadow); } .learn-cta p { font-size: 1.15rem; font-weight: 700; color: #e2e8f0; margin-bottom: 1.1rem; } .cta-links { display: flex; justify-content: center; gap: 0.8rem; flex-wrap: wrap; } .cta-btn { display: inline-block; padding: 0.65rem 1.4rem; font-size: 0.92rem; font-weight: 700; color: #082f49; background: #38bdf8; border-radius: 10px; text-decoration: none; transition: transform 0.12s, box-shadow 0.12s; } .cta-btn:hover { transform: translateY(-1px); box-shadow: 0 4px 16px rgba(56, 189, 248, 0.45); } .cta-btn.cta-alt { background: rgba(148, 163, 184, 0.14); color: #e2e8f0; border: 1px solid rgba(148, 163, 184, 0.35); } @media (max-width: 760px) { .learn-section { margin-top: 3.2rem; } .chapter-head { gap: 0.8rem; } .ch-num { font-size: 2.2rem; } .hero-stats { grid-template-columns: repeat(2, 1fr); } .type-tabs { grid-template-columns: repeat(auto-fit, minmax(100px, 1fr)); } .type-grid, .alt-widget, .bortle-widget { grid-template-columns: 1fr; } .alt-scene, .bortle-sky { min-height: 190px; } .spec-band { font-size: 0.62rem; padding: 0.5rem 0.1rem 0.42rem; } .spec-band small { display: none; } .tl-year { width: 4.6rem; font-size: 0.66rem; } .tl-body p { padding-left: 0.6rem; padding-right: 0.6rem; } } /* ---------- Mobile ---------- */ @media (max-width: 640px) { .subtitle { display: none; } .brand-text h1 { font-size: 1rem; } .topbar { flex-wrap: wrap; padding: 0.6rem 0.8rem; } .nav a { padding: 0.35rem 0.55rem; font-size: 0.82rem; } .panel { top: auto; max-height: 62%; left: 0.6rem; right: 0.6rem; bottom: 0.6rem; width: auto; } .legend { display: none; } }