/* multilayer.app — shared site chrome * Header (.topbar), nav (.nav-link, .tutorial-menu), theme switch, footer, * skip-link, theme tokens. Page-specific CSS stays inline per page. */ :root { color-scheme: dark light; --radius: 8px; --font-ui: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif; } /* Theme tokens. Apply on either or so static pages * (html[data-theme]) and the calculator (body[data-theme]) both work. */ html[data-theme="dark"], body[data-theme="dark"] { color-scheme: dark; --bg: #101011; --surface: #18191b; --surface2: #222326; --surface3: #2d2f33; --border: #3a3d42; --border-strong: #676c74; --accent: #2aa198; --accent2: #cc6677; --accent-soft: rgba(42, 161, 152, 0.18); --text: #f4f4f2; --text-dim: #c9cbc7; --text-soft: #969a9f; --shadow: 0 10px 24px rgba(0, 0, 0, 0.22); --chart-bg: #121315; --grid: #33363a; --axis: #f4f4f2; --metric-a: #d55e00; --metric-t: #56b4e9; --metric-r: #009e73; --metric-bare: #cc6677; --metric-ideal: #d55e00; --field-main: #cc79a7; --field-s: #56b4e9; --field-p: #f0e442; --layer-boundary: #b7bab6; --incident-boundary: #b7bab6; --substrate-boundary: #8b5cf6; --danger: #d55e00; --warning: #e69f00; --success: #009e73; --select-active: #2aa198; --select-active-text: #ffffff; } html[data-theme="light"], body[data-theme="light"] { color-scheme: light; --bg: #f6f7f9; --surface: #ffffff; --surface2: #edf0f2; --surface3: #dde4e7; --border: #d0d5d8; --border-strong: #8b969d; --accent: #007f79; --accent2: #cc6677; --accent-soft: rgba(0, 127, 121, 0.12); --text: #171716; --text-dim: #50575a; --text-soft: #717a80; --shadow: 0 12px 28px rgba(17, 17, 17, 0.07); --chart-bg: #ffffff; --grid: #d7dde0; --axis: #171716; --metric-a: #d55e00; --metric-t: #0072b2; --metric-r: #009e73; --metric-bare: #cc6677; --metric-ideal: #d55e00; --field-main: #cc79a7; --field-s: #0072b2; --field-p: #8f7600; --layer-boundary: #687179; --incident-boundary: #687179; --substrate-boundary: #5b45c6; --danger: #d55e00; --warning: #e69f00; --success: #009e73; --select-active: #007f79; --select-active-text: #ffffff; } * { box-sizing: border-box; } body { margin: 0; min-height: 100vh; padding: 10px; font-family: var(--font-ui); background: var(--bg); color: var(--text); } /* Page container. Modifiers control max-width: * .shell — default (1220px) for tutorials and validation * .shell--wide — 1520px for the calculator * .shell--narrow — 960px for prose pages (about) */ .shell { width: min(1220px, 100%); margin: 0 auto; } .shell--wide { max-width: 1520px; width: 100%; } .shell--narrow { width: min(960px, 100%); } /* Skip-link for keyboard users — first focusable element on the page. */ .skip-link { position: absolute; top: 4px; left: 4px; z-index: 100; padding: 6px 10px; border-radius: 6px; background: var(--accent); color: var(--select-active-text, #ffffff); font-size: 0.78rem; font-weight: 700; text-decoration: none; transform: translateY(-150%); transition: transform 0.12s ease; } .skip-link:focus { transform: translateY(0); outline: 2px solid var(--text); outline-offset: 2px; } /* Topbar / header */ .topbar { display: flex; align-items: center; justify-content: space-between; gap: 16px; margin-bottom: 10px; padding: 4px 2px; } /* The brand area is now a single anchor wrapping logo + title. * Clicking the logo or the title takes the user to the calculator. */ .app-brand { display: flex; align-items: center; gap: 12px; min-width: 0; color: inherit; text-decoration: none; border-radius: 12px; } .app-brand:hover, .app-brand:focus, .app-brand:focus-visible { text-decoration: none; } .app-brand:hover .app-title, .app-brand:focus-visible .app-title { color: var(--accent); } .app-brand:focus-visible { outline: 2px solid var(--accent); outline-offset: 4px; } .app-icon { width: 42px; height: 42px; display: block; flex: 0 0 auto; border-radius: 12px; box-shadow: 0 10px 22px rgba(16, 16, 17, 0.16); } .app-brand-copy { display: grid; gap: 2px; min-width: 0; } .app-title { display: block; margin: 0; color: var(--text); font-size: 0.94rem; font-weight: 750; line-height: 1.2; letter-spacing: 0; transition: color 0.12s ease; } .app-subtitle { display: block; min-width: 0; color: var(--text-soft); font-size: 0.74rem; font-weight: 400; line-height: 1.25; } .deployment-status { display: inline-flex; align-items: center; gap: 6px; margin-top: 5px; color: var(--text-soft); font-size: 0.68rem; font-weight: 700; line-height: 1.2; } .deployment-status-dot { width: 8px; height: 8px; flex: 0 0 auto; border-radius: 999px; background: var(--success); box-shadow: 0 0 0 0 color-mix(in srgb, var(--success) 46%, transparent); animation: service-pulse 3.2s ease-in-out infinite; } .deployment-status.is-warning .deployment-status-dot { background: var(--warning); box-shadow: none; animation: none; } .deployment-status.is-offline .deployment-status-dot { background: var(--danger); box-shadow: none; animation: none; } @keyframes service-pulse { 0%, 100% { opacity: 0.55; box-shadow: 0 0 0 0 color-mix(in srgb, var(--success) 42%, transparent); } 50% { opacity: 1; box-shadow: 0 0 0 6px color-mix(in srgb, var(--success) 0%, transparent); } } .topbar-actions { display: flex; align-items: center; gap: 8px; flex-wrap: wrap; justify-content: flex-end; } /* One nav button class for every text link in the header. */ .nav-link, .feedback-btn, .theme-switch { position: relative; display: inline-flex; align-items: center; justify-content: center; width: 38px; height: 34px; padding: 0; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); color: var(--text-dim); font-size: 1rem; font-weight: 750; text-decoration: none; cursor: pointer; box-shadow: var(--shadow); } .nav-link { width: auto; min-width: 38px; padding: 0 11px; font-size: 0.72rem; letter-spacing: 0; } .feedback-btn { font-size: 1.24rem; line-height: 1; } .nav-link:hover, .feedback-btn:hover, .theme-switch:hover { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); } .nav-link:focus-visible, .feedback-btn:focus-visible, .theme-switch:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } /* Active page indicator — accent border + filled background. */ .nav-link[aria-current="page"] { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); } .tutorial-menu { position: relative; display: inline-flex; } .tutorial-menu summary { list-style: none; } .tutorial-menu summary::-webkit-details-marker { display: none; } .tutorial-menu[open] summary { border-color: var(--accent); color: var(--accent); background: var(--accent-soft); } .tutorial-menu-dropdown { position: absolute; top: calc(100% + 6px); right: 0; z-index: 30; display: grid; gap: 4px; min-width: 236px; padding: 6px; border: 1px solid var(--border); border-radius: 8px; background: var(--surface); box-shadow: var(--shadow); } .tutorial-menu-dropdown .nav-link { width: 100%; justify-content: flex-start; box-shadow: none; } /* Tooltip on hover for the icon-only buttons. */ .feedback-btn::after, .theme-switch::after { content: attr(data-tooltip); position: absolute; top: calc(100% + 8px); right: 0; z-index: 20; min-width: max-content; padding: 5px 8px; border: 1px solid var(--border); border-radius: 6px; background: var(--surface); color: var(--text); font-size: 0.72rem; font-weight: 700; opacity: 0; pointer-events: none; transform: translateY(-3px); transition: opacity 0.08s ease, transform 0.08s ease; box-shadow: var(--shadow); } .feedback-btn:hover::after, .feedback-btn:focus-visible::after, .theme-switch:hover::after, .theme-switch:focus-visible::after { opacity: 1; transform: translateY(0); } .theme-icon { display: inline-flex; align-items: center; justify-content: center; } /* Sun/moon glyph swap. Reads the theme from or . */ .theme-icon::before { content: "☾"; color: currentColor; font-size: 1.05rem; line-height: 1; } html[data-theme="light"] .theme-icon::before, body[data-theme="light"] .theme-icon::before { content: "☀"; } .spectra-metric-tabs, .polarization-tabs, .angle-metric-tabs, .angle-polarization-tabs, .spectra-x-axis-tabs { display: flex; gap: 6px; padding: 4px; border: 1px solid var(--border); border-radius: 11px; background: var(--surface2); } .spectra-metric-tab, .polarization-tab, .angle-metric-tab, .angle-polarization-tab, .spectra-x-axis-tab { appearance: none; -webkit-appearance: none; min-width: 44px; padding: 6px 12px; border: 1px solid var(--border); border-radius: 7px; background: transparent; color: var(--text-dim); font: inherit; font-size: 0.76rem; font-weight: 700; cursor: pointer; transition: all 0.15s ease; } .spectra-metric-tab.active, .polarization-tab.active, .angle-metric-tab.active, .angle-polarization-tab.active, .spectra-x-axis-tab.active { border-color: var(--accent); background: var(--surface); color: var(--text); box-shadow: 0 0 0 1px color-mix(in srgb, var(--accent) 32%, transparent); } .spectra-metric-tab:focus-visible, .polarization-tab:focus-visible, .angle-metric-tab:focus-visible, .angle-polarization-tab:focus-visible, .spectra-x-axis-tab:focus-visible { outline: 2px solid var(--accent); outline-offset: 2px; } .spectra-metric-tab[hidden] { display: none; } /* Labels that should only appear in exported PNG/SVG output, not the * on-screen display. The PNG export code removes the attribute on a * clone, so the label shows up in the saved figure but is hidden in * the live UI. */ [data-export-only="true"] { display: none; } .hover-readout .hover-wavelength, .hover-readout .hover-value { background: #ffffff !important; color: #000000 !important; } /* Chart frame — shared by every tutorial's result plots. Matches the * .chart-frame styling inlined in index.html. */ .chart-frame { position: relative; width: 100%; overflow: hidden; border: 1px solid var(--border); border-radius: 8px; background: var(--surface2); } .chart-frame > svg { display: block; width: 100%; height: auto; cursor: crosshair; } /* Footer — single shared one-line note. */ .site-footer { margin: 28px auto 0; padding: 14px 4px 6px; border-top: 1px solid var(--border); color: var(--text-soft); font-size: 0.72rem; line-height: 1.5; text-align: center; } .site-footer a { color: var(--text-dim); text-decoration: underline; text-underline-offset: 2px; } .site-footer a:hover { color: var(--accent); } /* Responsive: compact topbar at narrow widths. */ @media (max-width: 960px) { .topbar { gap: 10px; } .app-brand { gap: 9px; } .app-icon { width: 36px; height: 36px; border-radius: 10px; } .app-title { font-size: 0.86rem; } .app-subtitle { font-size: 0.68rem; } .nav-link, .feedback-btn, .theme-switch { width: 34px; height: 32px; } .nav-link { width: auto; min-width: 34px; padding: 0 9px; } .tutorial-menu-dropdown { right: auto; left: 0; } }