/* ========================================================================== Haru Smog — minimal dark theme Pure black, hairline surfaces, small precise type, white as the only accent besides the air-quality status colours. A quiet starfield canvas (starfield_controller.js) sits fixed behind the page. ========================================================================== */ :root { color-scheme: dark; --bg: #000000; --surface: #101010; --surface-hover: #171717; --border: rgba(255, 255, 255, 0.14); --border-strong: rgba(255, 255, 255, 0.26); --text: #f2f2f2; --text-2: #c4c4c4; --muted: #8c8c8c; /* Air-quality status — the only chroma on the page. */ --air-green: #2fd08a; --air-yellow: #f5c451; --air-red: #f26b6b; --air-purple: #b58cf6; --air-unknown: #6f6f6f; /* Dimmed status palette for large fills (chart bars). */ --pm-green: #2f9e6e; --pm-yellow: #b8932f; --pm-red: #c25252; --pm-purple: #8b62c8; --font: "Geist", "Inter", system-ui, -apple-system, "Segoe UI", sans-serif; --font-mono: "Geist Mono", ui-monospace, "SF Mono", Menlo, monospace; --radius: 12px; --radius-sm: 8px; --content: 1040px; --gutter: 24px; } * { box-sizing: border-box; } html { scroll-behavior: smooth; /* Background on propagates to the canvas, so the fixed .sky layer (z-index -1) sits above it and below the content. */ background: var(--bg); } body { margin: 0; padding: 0; font-family: var(--font); font-size: 15px; line-height: 1.5; color: var(--text); min-height: 100vh; -webkit-font-smoothing: antialiased; text-rendering: optimizeLegibility; scrollbar-color: rgba(255, 255, 255, 0.2) transparent; } ::selection { background: rgba(255, 255, 255, 0.24); } :focus-visible { outline: 1px solid #fff; outline-offset: 2px; border-radius: 4px; } h1, h2, p { margin: 0; } .sr-only { position: absolute; width: 1px; height: 1px; margin: -1px; padding: 0; overflow: hidden; clip: rect(0 0 0 0); white-space: nowrap; border: 0; } /* -------------------------------------------------------------------------- Sky -------------------------------------------------------------------------- */ .sky { position: fixed; inset: 0; z-index: -1; overflow: hidden; pointer-events: none; background: var(--bg); } /* Soft horizon glow at the top; the rest stays black. */ .sky::before { content: ""; position: absolute; inset: 0; background: radial-gradient(900px 420px at 50% -120px, rgba(255, 255, 255, 0.07), transparent 70%); } .sky__stars { position: absolute; inset: 0; width: 100%; height: 100%; display: block; } /* -------------------------------------------------------------------------- Masthead — a plain row, no bar -------------------------------------------------------------------------- */ .masthead { display: flex; flex-wrap: wrap; align-items: center; gap: 12px 24px; padding-top: 24px; } .masthead__nav { margin-left: auto; } .logo { display: inline-flex; align-items: center; gap: 8px; font-size: 14px; font-weight: 500; letter-spacing: -0.01em; color: var(--text); text-decoration: none; } .logo__mark { width: 16px; height: 16px; flex: none; fill: #fff; } .masthead__nav { display: flex; align-items: center; gap: 20px; font-size: 14px; } .nav-link { color: var(--text-2); text-decoration: none; transition: color 0.15s ease; } .nav-link:hover, .nav-link:focus-visible { color: var(--text); } .locale-switcher { display: flex; align-items: center; } /* Chevron for selects — appearance:none drops the native arrow. */ .locale-switcher__select { appearance: none; -webkit-appearance: none; cursor: pointer; background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath d='M3 4.5 6 7.5l3-3' fill='none' stroke='%23d0d0d0' stroke-width='1.4' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E"); background-repeat: no-repeat; } .locale-switcher__select { border: 0; background-color: transparent; background-position: right center; padding: 4px 16px 4px 0; color: var(--text-2); font-family: inherit; font-size: 14px; transition: color 0.15s ease; } .locale-switcher__select:hover, .locale-switcher__select:focus-visible { color: var(--text); } .locale-switcher__select option { background: #0a0a0a; color: var(--text); } /* -------------------------------------------------------------------------- Flash -------------------------------------------------------------------------- */ /* Flash messages are toasts: fixed at the top centre, small and quiet, dismissed by dismiss_controller.js after a few seconds. */ .flash-stack { position: fixed; /* Under the top bar, right-aligned: clear of the search field and the title on desktop. */ top: 72px; right: 24px; z-index: 1200; width: min(calc(100% - 32px), 400px); display: grid; gap: 8px; pointer-events: none; } .flash { display: flex; align-items: flex-start; gap: 9px; padding: 9px 8px 9px 12px; border: 1px solid var(--border); border-radius: 10px; background: rgba(14, 14, 14, 0.94); box-shadow: 0 10px 30px rgba(0, 0, 0, 0.55); backdrop-filter: blur(10px); -webkit-backdrop-filter: blur(10px); font-size: 13px; line-height: 1.4; color: var(--text); pointer-events: auto; animation: toast-in 0.35s cubic-bezier(0.2, 0.8, 0.2, 1) both; } .flash.is-leaving { animation: toast-out 0.22s ease-in both; } .flash__icon { width: 14px; height: 14px; flex: none; margin-top: 2px; color: var(--text-2); } .flash--alert .flash__icon { color: var(--air-yellow); } .flash--notice .flash__icon { color: var(--air-green); } .flash__text { flex: 1; margin: 0; } .flash__close { display: inline-grid; place-items: center; width: 22px; height: 22px; flex: none; margin-top: -1px; padding: 0; border: 0; border-radius: 6px; background: transparent; color: var(--muted); cursor: pointer; transition: color 0.15s ease, background 0.15s ease; } .flash__close:hover, .flash__close:focus-visible { color: var(--text); background: #1c1c1c; } .flash__close svg { width: 12px; height: 12px; } @keyframes toast-in { from { opacity: 0; transform: translateY(-12px); } to { opacity: 1; transform: translateY(0); } } @keyframes toast-out { to { opacity: 0; transform: translateY(-8px); } } /* -------------------------------------------------------------------------- Page + hero -------------------------------------------------------------------------- */ .page { max-width: var(--content); margin: 0 auto; padding: 48px var(--gutter) 72px; display: grid; /* minmax(0, …): a wide