feat: auto OS-driven dark mode (prefers-color-scheme)
Refactor public/style.css to semantic CSS custom properties under :root (light palette by default) and add a @media (prefers-color-scheme: dark) override block that flips background/foreground/accent/danger tokens to a soft near-black palette. The original --black/--white/--gray-*/--red literal tokens and the lone #fff5f5 floating literal are gone — every color now derives from a semantic token, so the dark override is the only place that re-declares them. Add <meta name="color-scheme" content="light dark"> to the shared layout <head> so the browser renders its UA backdrop, native scrollbars, and form-control popups in the user's preferred scheme before the stylesheet parses — this is what avoids a white flash on initial paint in dark mode. No toggle, no JS, no preference persistence — the page follows the OS setting directly via the media query. The 16px font-size rule on text-entry inputs is preserved (still asserted by tests/integration /style.test.ts).
This commit is contained in:
166
public/style.css
166
public/style.css
@@ -7,29 +7,60 @@
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/* ── Tokens ─────────────────────────────────────────────── */
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:root {
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--black: #000;
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--white: #fff;
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--gray-50: #fafafa;
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--gray-100:#f0f0f0;
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--gray-200:#e0e0e0;
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--gray-400:#999;
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--gray-600:#555;
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--red: #c00;
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--bg: #fff;
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--bg-elevated: #f0f0f0;
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--bg-hover: #fafafa;
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--fg: #000;
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--fg-muted: #555;
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--fg-on-accent: #fff;
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--border-color: #000;
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--border-subtle: #e0e0e0;
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--accent: #000;
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--accent-hover: #555;
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--danger: #c00;
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--danger-bg: #fff5f5;
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--danger-fg: #fff;
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--input-bg: #fff;
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--input-bg-focus: #fafafa;
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--input-fg: #000;
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--input-border: #000;
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--font: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, 'Helvetica Neue', Arial, sans-serif;
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--font-mono: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
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--border: 1px solid var(--black);
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--border: 1px solid var(--border-color);
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--radius: 0;
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}
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@media (prefers-color-scheme: dark) {
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:root {
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--bg: #0f1115;
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--bg-elevated: #1a1d23;
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--bg-hover: #1f2228;
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--fg: #e5e7eb;
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--fg-muted: #9ca3af;
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--fg-on-accent: #0f1115;
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--border-color: #2a2e36;
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--border-subtle: #272b33;
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--accent: #e5e7eb;
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--accent-hover: #cbd0d8;
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--danger: #f87171;
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--danger-bg: #2a1414;
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--danger-fg: #0f1115;
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--input-bg: #1a1d23;
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--input-bg-focus: #222630;
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--input-fg: #e5e7eb;
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--input-border: #3a3f48;
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}
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}
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/* ── Base ───────────────────────────────────────────────── */
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html { font-size: 14px; }
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body {
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font-family: var(--font);
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line-height: 1.5;
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background: var(--white);
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color: var(--black);
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background: var(--bg);
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color: var(--fg);
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min-height: 100vh;
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display: flex;
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flex-direction: column;
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@@ -37,11 +68,11 @@ body {
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}
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a {
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color: var(--black);
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color: var(--fg);
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text-decoration: underline;
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text-underline-offset: 3px;
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}
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a:hover { color: var(--gray-600); }
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a:hover { color: var(--fg-muted); }
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/* ── Header ─────────────────────────────────────────────── */
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header {
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@@ -59,9 +90,9 @@ header {
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font-weight: 600;
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letter-spacing: 0.02em;
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text-decoration: none;
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color: var(--black);
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color: var(--fg);
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}
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.logo:hover { color: var(--gray-600); }
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.logo:hover { color: var(--fg-muted); }
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nav {
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display: flex;
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@@ -78,12 +109,12 @@ nav a {
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font-size: 12px;
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letter-spacing: 0.04em;
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text-decoration: none;
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color: var(--gray-600);
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color: var(--fg-muted);
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border-left: var(--border);
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}
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nav a:hover {
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color: var(--black);
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background: var(--gray-100);
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color: var(--fg);
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background: var(--bg-elevated);
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}
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nav form {
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@@ -99,13 +130,13 @@ nav button[type="submit"] {
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background: none;
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border: none;
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border-left: var(--border);
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color: var(--gray-600);
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color: var(--fg-muted);
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cursor: pointer;
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font-family: var(--font);
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}
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nav button[type="submit"]:hover {
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color: var(--black);
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background: var(--gray-100);
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color: var(--fg);
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background: var(--bg-elevated);
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}
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/* ── Main ───────────────────────────────────────────────── */
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@@ -141,7 +172,7 @@ label {
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font-size: 11px;
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letter-spacing: 0.06em;
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text-transform: uppercase;
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color: var(--gray-600);
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color: var(--fg-muted);
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}
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input[type="text"],
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@@ -151,16 +182,16 @@ input[type="file"] {
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padding: 0.6rem 0.75rem;
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font-family: var(--font);
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font-size: 16px;
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background: var(--white);
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border: var(--border);
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color: var(--black);
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background: var(--input-bg);
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border: 1px solid var(--input-border);
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color: var(--input-fg);
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outline: none;
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transition: background 0.1s;
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}
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input[type="text"]:focus,
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input[type="password"]:focus {
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background: var(--gray-50);
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box-shadow: inset 0 0 0 2px var(--black);
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background: var(--input-bg-focus);
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box-shadow: inset 0 0 0 2px var(--accent);
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}
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input[type="file"] {
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@@ -171,8 +202,8 @@ input[type="file"]::-webkit-file-upload-button {
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font-family: var(--font);
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font-size: 11px;
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letter-spacing: 0.02em;
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background: var(--black);
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color: var(--white);
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background: var(--accent);
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color: var(--fg-on-accent);
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border: none;
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padding: 0.3rem 0.6rem;
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cursor: pointer;
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@@ -182,8 +213,8 @@ input[type="file"]::file-selector-button {
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font-family: var(--font);
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font-size: 11px;
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letter-spacing: 0.02em;
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background: var(--black);
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color: var(--white);
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background: var(--accent);
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color: var(--fg-on-accent);
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border: none;
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padding: 0.3rem 0.6rem;
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cursor: pointer;
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@@ -199,16 +230,17 @@ button[type="submit"],
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font-size: 11px;
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font-weight: 600;
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letter-spacing: 0.02em;
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background: var(--black);
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color: var(--white);
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border: var(--border);
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background: var(--accent);
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color: var(--fg-on-accent);
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border: 1px solid var(--accent);
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cursor: pointer;
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transition: background 0.1s, color 0.1s;
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text-align: center;
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}
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button[type="submit"]:hover,
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.btn-primary:hover {
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background: var(--gray-600);
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background: var(--accent-hover);
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border-color: var(--accent-hover);
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}
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/* ── Danger Button ──────────────────────────────────────── */
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@@ -219,13 +251,13 @@ button.danger {
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font-size: 11px;
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letter-spacing: 0.04em;
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background: none;
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color: var(--red);
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border: 1px solid var(--red);
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color: var(--danger);
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border: 1px solid var(--danger);
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cursor: pointer;
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}
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button.danger:hover {
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background: var(--red);
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color: var(--white);
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background: var(--danger);
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color: var(--danger-fg);
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}
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/* ── Generic Link-button (.btn for file-view) ───────────── */
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@@ -236,23 +268,23 @@ a.btn {
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font-weight: 600;
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letter-spacing: 0.02em;
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text-decoration: none;
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background: var(--black);
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color: var(--white);
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border: var(--border);
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background: var(--accent);
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color: var(--fg-on-accent);
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border: 1px solid var(--accent);
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transition: background 0.1s;
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}
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a.btn:hover {
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background: var(--gray-600);
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color: var(--white);
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background: var(--accent-hover);
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color: var(--fg-on-accent);
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}
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/* ── Error ──────────────────────────────────────────────── */
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.error {
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font-size: 12px;
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color: var(--red);
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color: var(--danger);
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padding: 0.6rem 0.75rem;
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border: 1px solid var(--red);
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background: #fff5f5;
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border: 1px solid var(--danger);
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background: var(--danger-bg);
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margin-bottom: 0.5rem;
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}
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@@ -266,14 +298,14 @@ a.btn:hover {
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.share-box input[readonly] {
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flex: 1;
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font-family: var(--font-mono);
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background: var(--gray-100);
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color: var(--gray-600);
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background: var(--bg-elevated);
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color: var(--fg-muted);
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border-right: none;
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cursor: text;
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}
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.share-box input[readonly]:focus {
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box-shadow: none;
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background: var(--gray-100);
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background: var(--bg-elevated);
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}
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/* Copy button — outline style, distinct from submit */
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@@ -283,16 +315,16 @@ a.btn:hover {
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font-size: 11px;
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font-weight: 600;
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letter-spacing: 0.02em;
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background: var(--white);
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color: var(--black);
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border: var(--border);
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background: var(--bg);
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color: var(--fg);
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border: 1px solid var(--border-color);
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cursor: pointer;
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white-space: nowrap;
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transition: background 0.1s;
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flex-shrink: 0;
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}
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.share-box button:hover {
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background: var(--gray-100);
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background: var(--bg-elevated);
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}
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/* ── Table ──────────────────────────────────────────────── */
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@@ -329,21 +361,21 @@ th {
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letter-spacing: 0.06em;
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text-transform: uppercase;
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text-align: left;
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background: var(--gray-100);
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border-bottom: var(--border);
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color: var(--gray-600);
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background: var(--bg-elevated);
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border-bottom: 1px solid var(--border-color);
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color: var(--fg-muted);
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}
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td {
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padding: 0.6rem 1rem;
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font-size: 12px;
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border-bottom: 1px solid var(--gray-200);
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border-bottom: 1px solid var(--border-subtle);
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vertical-align: middle;
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}
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tr:last-child td { border-bottom: none; }
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tr:hover td { background: var(--gray-50); }
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tr:hover td { background: var(--bg-hover); }
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td a {
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font-weight: 500;
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@@ -362,14 +394,14 @@ button.copy-link {
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font-family: var(--font);
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font-size: 11px;
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letter-spacing: 0.04em;
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background: var(--white);
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color: var(--black);
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border: var(--border);
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background: var(--bg);
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color: var(--fg);
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border: 1px solid var(--border-color);
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cursor: pointer;
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margin-right: 0.4rem;
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}
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button.copy-link:hover {
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background: var(--gray-100);
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background: var(--bg-elevated);
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}
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/* ── File View ──────────────────────────────────────────── */
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@@ -388,7 +420,7 @@ button.copy-link:hover {
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.file-view h1 {
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font-size: 13px;
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font-weight: 400;
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color: var(--gray-600);
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color: var(--fg-muted);
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word-break: break-all;
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border-bottom: none;
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padding-bottom: 0;
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@@ -412,14 +444,14 @@ button.copy-link:hover {
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/* ── Utility ─────────────────────────────────────────────── */
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.form-container > p {
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font-size: 12px;
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color: var(--gray-600);
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color: var(--fg-muted);
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margin-top: 1rem;
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line-height: 1.7;
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}
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.form-container > p strong {
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color: var(--black);
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color: var(--fg);
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font-weight: 600;
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}
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.form-container > p a {
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color: var(--black);
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color: var(--fg);
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}
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@@ -22,6 +22,7 @@ export function layout(title: string, body: string, opts: { authed?: boolean; hi
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<head>
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<meta charset="UTF-8">
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<meta name="viewport" content="width=device-width, initial-scale=1.0">
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<meta name="color-scheme" content="light dark">
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<title>${escHtml(title)} — Nanodrop</title>
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<link rel="stylesheet" href="/public/style.css">
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</head>
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@@ -29,6 +29,11 @@ describe('GET /', () => {
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expect(res.statusCode).toBe(302);
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expect(res.headers['location']).toBe('/upload');
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});
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it('emits <meta name="color-scheme" content="light dark"> in <head>', async () => {
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const res = await ctx.app.inject({ method: 'GET', url: '/' });
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expect(res.body).toMatch(/<meta\s+name="color-scheme"\s+content="light dark"/);
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});
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});
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describe('POST /login (page)', () => {
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@@ -31,6 +31,23 @@ describe('public/style.css (file contents)', () => {
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/input\[type="text"\][\s\S]*?input\[type="password"\][\s\S]*?\{[\s\S]*?font-size:\s*(1[6-9]|[2-9]\d)px/
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);
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});
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it('declares a prefers-color-scheme: dark override', () => {
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expect(css).toMatch(/@media\s*\(\s*prefers-color-scheme:\s*dark\s*\)/);
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});
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it('uses CSS custom properties for the core palette', () => {
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expect(css).toMatch(/--bg:/);
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expect(css).toMatch(/--fg:/);
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expect(css).toMatch(/--accent:/);
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});
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it('does not contain unreplaced literal hex colors outside the :root and @media blocks', () => {
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const stripped = css
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.replace(/:root\s*\{[\s\S]*?\}/g, '')
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.replace(/@media\s*\([^)]*\)\s*\{[\s\S]*?\}\s*\}/g, '');
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expect(stripped).not.toMatch(/#[0-9a-fA-F]{3,6}\b/);
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});
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});
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describe('GET /public/style.css', () => {
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Reference in New Issue
Block a user