refactor styles

frontend/src/styles/base/controls.css

@@ -0,0 +1,99 @@
+button {
+  font: inherit;
+  border-radius: 2px;
+  border: 1px solid transparent;
+  padding: 0.35rem 0.85rem;
+  background: var(--accent);
+  color: var(--on-accent);
+  cursor: pointer;
+  font-weight: 500;
+  transition: background 0.15s ease, border-color 0.15s ease;
+}
+
+button[disabled] {
+  opacity: 0.55;
+  cursor: not-allowed;
+}
+
+a.button-link {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+  font: inherit;
+  border-radius: 2px;
+  border: 1px solid transparent;
+  padding: 0.35rem 0.85rem;
+  background: var(--accent);
+  color: var(--on-accent);
+  text-decoration: none;
+  font-weight: 500;
+  transition: background 0.15s ease, border-color 0.15s ease;
+}
+
+a.button-link[aria-disabled='true'] {
+  opacity: 0.55;
+}
+
+a.button-link:hover:not([aria-disabled='true']) {
+  background: var(--accent-hover);
+}
+
+button.secondary {
+  background: transparent;
+  color: var(--fg);
+  border-color: var(--border);
+}
+
+button.secondary:hover:not([disabled]) {
+  background: var(--surface-subtle);
+}
+
+button.danger {
+  background: transparent;
+  color: var(--danger);
+  border-color: var(--danger-border);
+}
+
+button.danger:hover:not([disabled]) {
+  border-color: var(--danger);
+  background: var(--danger-subtle);
+}
+
+.icon-button {
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+  border: none;
+  background: transparent;
+  color: var(--muted);
+  padding: 0.25rem;
+  border-radius: 4px;
+  cursor: pointer;
+  transition: background 0.15s ease, color 0.15s ease;
+}
+
+.icon-button:hover:not([disabled]) {
+  background: var(--sidebar-hover-bg);
+  color: var(--fg);
+}
+
+.icon-button.danger {
+  color: var(--danger);
+}
+
+.icon-button.danger:hover:not([disabled]) {
+  background: var(--danger-subtle);
+}
+
+.icon-button.ghost {
+  border: none;
+  background: transparent;
+  color: var(--muted);
+  padding: 0.2rem;
+}
+
+.icon-button.ghost:hover:not([disabled]) {
+  color: var(--danger);
+  background: transparent;
+}
+

frontend/src/styles/base/iconography.css

@@ -0,0 +1,56 @@
+.with-icon {
+  display: inline-flex;
+  align-items: center;
+  gap: 0.35rem;
+}
+
+.icon-inline {
+  width: 1rem;
+  height: 1rem;
+}
+
+.icon {
+  width: 1rem;
+  height: 1rem;
+  display: inline-flex;
+  align-items: center;
+  justify-content: center;
+}
+
+@keyframes icon-spin {
+  to {
+    transform: rotate(360deg);
+  }
+}
+
+.icon--spin {
+  animation: icon-spin 0.9s linear infinite;
+}
+
+.icon--flip-y {
+  transform: scaleX(-1);
+}
+
+.visually-hidden {
+  position: absolute;
+  width: 1px;
+  height: 1px;
+  padding: 0;
+  margin: -1px;
+  overflow: hidden;
+  clip: rect(0, 0, 0, 0);
+  border: 0;
+}
+
+.icon path {
+  stroke: currentColor;
+  stroke-width: 1.6;
+  fill: none;
+}
+
+.icon--fill path {
+  stroke: none;
+  fill: currentColor;
+}
+
+

frontend/src/styles/base/text-button.css

@@ -0,0 +1,14 @@
+.text-button {
+  background: none;
+  border: none;
+  color: var(--accent);
+  font-weight: 500;
+  font-size: 0.8rem;
+  cursor: pointer;
+  padding: 0.1rem 0.25rem;
+}
+
+.text-button:disabled {
+  opacity: 0.4;
+  cursor: not-allowed;
+}

frontend/src/styles/base/theme.css

@@ -0,0 +1,295 @@
+:root {
+  color-scheme: light dark;
+
+  --neutral-hue: 180deg;
+  --foreground-hue-offset: 10deg;
+  --accent-hue-offset: -20deg;
+  --dark-hue-offset: 30deg;
+  --dark-foreground-hue-offset: 10deg;
+
+  /* --- Neutrals --- */
+  --bg: oklch(0.97 0.001 var(--neutral-hue));
+  --surface: oklch(0.985 0.001 var(--neutral-hue));
+  --surface-subtle: oklch(0.96 0.002 var(--neutral-hue));
+  --fg: oklch(0.32 0.005 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --muted: oklch(0.54 0.008 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --sidebar-fg: oklch(0.56 0.007 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --border: oklch(0.92 0.002 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+
+  /* --- Accent (primary) --- */
+  --accent: oklch(0.61 0.2 calc(var(--neutral-hue) + var(--foreground-hue-offset) + var(--accent-hue-offset)));
+  --accent-hover: oklch(0.70 0.02 calc(var(--neutral-hue) + var(--foreground-hue-offset) + var(--accent-hue-offset)));
+  --on-accent: oklch(1 0 0);
+
+  --folder-icon-back: color-mix(in oklch, var(--accent) 78%, black 8%);
+  --folder-icon-mid: color-mix(in oklch, var(--accent) 60%, white 30%);
+  --folder-icon-front: color-mix(in oklch, var(--accent) 42%, white 58%);
+
+  --success-hue: 140deg;
+  --warning-hue: 85deg;
+  --danger-hue: 25deg;
+
+  --accent-soft: color-mix(in oklch, var(--accent) 12%, transparent);
+  --accent-elevated: color-mix(in oklch, var(--accent) 16%, transparent);
+  --accent-elevated-strong: color-mix(in oklch, var(--accent) 22%, transparent);
+  --accent-outline: color-mix(in oklch, var(--accent) 45%, transparent);
+  --accent-outline-strong: color-mix(in oklch, var(--accent) 90%, transparent);
+  --accent-focus: color-mix(in oklch, var(--accent) 85%, transparent);
+  --surface-overlay: color-mix(in oklch, white 82%, transparent);
+
+  /* -- Selection --- */
+  --selection: oklch(0.61 0.01 var(--neutral-hue));
+
+  /* --- Derived accent states --- */
+  --selection-soft: color-mix(in oklch, var(--selection) 12%, transparent);
+
+  /* --- Shadows & overlays --- */
+  --shadow-faint: color-mix(in oklch, black 6%, transparent);
+  --shadow-soft: color-mix(in oklch, black 12%, transparent);
+  --shadow-medium: color-mix(in oklch, black 18%, transparent);
+  --shadow-strong: color-mix(in oklch, black 28%, transparent);
+  --shadow-deep: color-mix(in oklch, black 55%, transparent);
+  --shadow-pop: color-mix(in oklch, black 25%, transparent);
+  --outline-subtle: color-mix(in oklch, black 6%, transparent);
+  --overlay-dark: color-mix(in oklch, black 55%, transparent);
+  --overlay-dim: color-mix(in oklch, oklch(0.28 0.01 calc(var(--neutral-hue) + var(--foreground-hue-offset) - 5deg)) 20%, transparent);
+  --overlay-darker: color-mix(in oklch, black 75%, transparent);
+  --surface-danger-subtle: color-mix(in oklch, var(--danger) 12%, transparent);
+  --overlay-accent-subtle: color-mix(in oklch, var(--accent) 12%, transparent);
+  --border-strong: color-mix(in oklch, var(--fg) 24%, transparent);
+  --surface-hover: color-mix(in oklch, white 10%, transparent);
+  --overlay-accent-strong: color-mix(in oklch, var(--accent) 24%, transparent);
+  --overlay-backdrop: color-mix(in oklch, oklch(0.22 0.015 calc(var(--neutral-hue) + var(--foreground-hue-offset) - 5deg)) 45%, transparent);
+  --overlay-shadow: color-mix(in oklch, oklch(0.22 0.015 calc(var(--neutral-hue) + var(--foreground-hue-offset) - 5deg)) 18%, transparent);
+
+  /* --- Semantic colors --- */
+  --success: oklch(0.68 0.16 var(--success-hue));
+  --warning: oklch(0.76 0.17 var(--warning-hue));
+  --danger: oklch(0.64 0.2 var(--danger-hue));
+
+  --success-subtle: color-mix(in oklch, var(--success) 12%, transparent);
+  --warning-subtle: color-mix(in oklch, var(--warning) 12%, transparent);
+  --danger-border: color-mix(in oklch, var(--danger) 45%, transparent);
+  --danger-soft: color-mix(in oklch, var(--danger) 12%, transparent);
+  --danger-subtle: color-mix(in oklch, var(--danger) 8%, transparent);
+
+  /* --- Explorer states --- */
+  --row-hover-bg: color-mix(in oklch, var(--selection) 6%, transparent);
+  --row-active-bg: color-mix(in oklch, var(--selection) 12%, transparent);
+  --sidebar-hover-bg: color-mix(in oklch, var(--selection) 8%, transparent);
+  --sidebar-active-bg: color-mix(in oklch, var(--selection) 16%, transparent);
+  --selection-ring: oklch(0.78 0.16 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --sidebar-active-pill-border: color-mix(in oklch, var(--accent) 64%, transparent);
+  --link: var(--accent);
+  --link-visited: color-mix(in oklch, var(--accent) 75%, var(--fg) 25%);
+  --preview-nav-bg: oklch(0.18 0.05 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --preview-nav-bg-hover: oklch(0.14 0.05 calc(var(--neutral-hue) + var(--foreground-hue-offset)));
+  --preview-nav-fg: var(--on-accent);
+  --text-on-dark: color-mix(in oklch, white 90%, transparent);
+  --surface-ink-soft: color-mix(in oklch, var(--fg) 8%, transparent);
+
+  font-family: "Inter", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
+  font-size: 15px;
+  --font-mono: "SFMono-Regular", Consolas, "Liberation Mono", Menlo, monospace;
+
+  --detail-panel-width: 30em;
+  --documents-grid-title-size: 0.8rem;
+}
+
+:root[data-theme='light'] {
+  color-scheme: light;
+}
+
+:root[data-theme='dark'] {
+  color-scheme: dark;
+
+  --dark-neutral-hue: calc(var(--neutral-hue) + var(--dark-hue-offset));
+  --dark-foreground-hue: calc(var(--neutral-hue) + var(--dark-foreground-hue-offset));
+
+  --bg: oklch(0.15 0.01 var(--dark-neutral-hue));
+  --surface: oklch(0.19 0.012 var(--dark-neutral-hue));
+  --surface-subtle: oklch(0.23 0.012 var(--dark-neutral-hue));
+  --fg: oklch(0.89 0.015 var(--dark-foreground-hue));
+  --muted: oklch(0.72 0.02 var(--dark-foreground-hue));
+  --sidebar-fg: oklch(0.78 0.02 var(--dark-foreground-hue));
+  --border: oklch(0.33 0.01 var(--dark-foreground-hue));
+
+  --accent: oklch(0.75 0.2 calc(var(--dark-foreground-hue) + var(--accent-hue-offset)));
+  --accent-hover: oklch(0.82 0.16 calc(var(--dark-foreground-hue) + var(--accent-hue-offset)));
+  --on-accent: oklch(0.15 0.015 var(--dark-foreground-hue));
+
+  --folder-icon-back: color-mix(in oklch, var(--accent) 72%, black 12%);
+  --folder-icon-mid: color-mix(in oklch, var(--accent) 50%, white 24%);
+  --folder-icon-front: color-mix(in oklch, var(--accent) 30%, white 50%);
+
+  --accent-soft: color-mix(in oklch, var(--accent) 22%, transparent);
+  --accent-elevated: color-mix(in oklch, var(--accent) 28%, transparent);
+  --accent-elevated-strong: color-mix(in oklch, var(--accent) 38%, transparent);
+  --accent-outline: color-mix(in oklch, var(--accent) 55%, transparent);
+  --accent-outline-strong: color-mix(in oklch, var(--accent) 90%, transparent);
+  --accent-focus: color-mix(in oklch, var(--accent) 80%, transparent);
+  --surface-overlay: color-mix(in oklch, black 60%, transparent);
+
+  --selection: oklch(0.44 0.04 220deg);
+  --selection-soft: color-mix(in oklch, var(--selection) 18%, transparent);
+
+  --shadow-faint: color-mix(in oklch, black 35%, transparent);
+  --shadow-soft: color-mix(in oklch, black 50%, transparent);
+  --shadow-medium: color-mix(in oklch, black 65%, transparent);
+  --shadow-strong: color-mix(in oklch, black 80%, transparent);
+  --shadow-deep: color-mix(in oklch, black 90%, transparent);
+  --shadow-pop: color-mix(in oklch, black 70%, transparent);
+  --outline-subtle: color-mix(in oklch, white 10%, transparent);
+  --overlay-dark: color-mix(in oklch, black 70%, transparent);
+  --overlay-dim: color-mix(in oklch, oklch(0.42 0.04 var(--dark-neutral-hue)) 35%, transparent);
+  --overlay-darker: color-mix(in oklch, black 85%, transparent);
+  --surface-danger-subtle: color-mix(in oklch, var(--danger) 26%, transparent);
+  --overlay-accent-subtle: color-mix(in oklch, var(--accent) 32%, transparent);
+  --border-strong: color-mix(in oklch, var(--fg) 30%, transparent);
+  --surface-hover: color-mix(in oklch, white 6%, transparent);
+  --overlay-accent-strong: color-mix(in oklch, var(--accent) 55%, transparent);
+  --overlay-backdrop: color-mix(in oklch, oklch(0.1 0.015 var(--dark-neutral-hue)) 70%, transparent);
+  --overlay-shadow: color-mix(in oklch, oklch(0.12 0.015 var(--dark-neutral-hue)) 55%, transparent);
+
+  --success: oklch(0.62 0.16 var(--success-hue));
+  --warning: oklch(0.68 0.17 var(--warning-hue));
+  --danger: oklch(0.60 0.2 var(--danger-hue));
+
+  --success-subtle: color-mix(in oklch, var(--success) 20%, transparent);
+  --warning-subtle: color-mix(in oklch, var(--warning) 20%, transparent);
+  --danger-border: color-mix(in oklch, var(--danger) 45%, transparent);
+  --danger-soft: color-mix(in oklch, var(--danger) 24%, transparent);
+  --danger-subtle: color-mix(in oklch, var(--danger) 18%, transparent);
+
+  --row-hover-bg: color-mix(in oklch, white 4%, transparent);
+  --row-active-bg: color-mix(in oklch, var(--selection) 20%, transparent);
+  --sidebar-hover-bg: color-mix(in oklch, white 6%, transparent);
+  --sidebar-active-bg: color-mix(in oklch, var(--selection) 26%, transparent);
+  --selection-ring: oklch(0.68 0.16 var(--dark-foreground-hue));
+  --sidebar-active-pill-border: color-mix(in oklch, var(--accent) 72%, transparent);
+  --link: color-mix(in oklch, var(--accent) 92%, transparent);
+  --link-visited: color-mix(in oklch, var(--accent) 70%, white 20%);
+  --preview-nav-bg: oklch(0.3 0.04 var(--dark-neutral-hue));
+  --preview-nav-bg-hover: oklch(0.35 0.04 var(--dark-neutral-hue));
+  --preview-nav-fg: var(--fg);
+  --text-on-dark: color-mix(in oklch, white 92%, transparent);
+  --surface-ink-soft: color-mix(in oklch, white 12%, transparent);
+}
+
+@media (prefers-color-scheme: dark) {
+  :root:not([data-theme='light']) {
+    color-scheme: dark;
+
+    --dark-neutral-hue: calc(var(--neutral-hue) + var(--dark-hue-offset));
+    --dark-foreground-hue: calc(var(--neutral-hue) + var(--dark-foreground-hue-offset));
+
+    --bg: oklch(0.15 0.01 var(--dark-neutral-hue));
+    --surface: oklch(0.19 0.012 var(--dark-neutral-hue));
+    --surface-subtle: oklch(0.23 0.012 var(--dark-neutral-hue));
+    --fg: oklch(0.89 0.015 var(--dark-foreground-hue));
+    --muted: oklch(0.72 0.02 var(--dark-foreground-hue));
+    --sidebar-fg: oklch(0.78 0.02 var(--dark-foreground-hue));
+    --border: oklch(0.33 0.01 var(--dark-foreground-hue));
+
+    --accent: oklch(0.75 0.2 calc(var(--dark-foreground-hue) + var(--accent-hue-offset)));
+    --accent-hover: oklch(0.82 0.16 calc(var(--dark-foreground-hue) + var(--accent-hue-offset)));
+    --on-accent: oklch(0.15 0.015 var(--dark-foreground-hue));
+
+    --folder-icon-back: color-mix(in oklch, var(--accent) 72%, black 12%);
+    --folder-icon-mid: color-mix(in oklch, var(--accent) 50%, white 24%);
+    --folder-icon-front: color-mix(in oklch, var(--accent) 30%, white 50%);
+
+    --accent-soft: color-mix(in oklch, var(--accent) 22%, transparent);
+    --accent-elevated: color-mix(in oklch, var(--accent) 28%, transparent);
+    --accent-elevated-strong: color-mix(in oklch, var(--accent) 38%, transparent);
+    --accent-outline: color-mix(in oklch, var(--accent) 55%, transparent);
+    --accent-outline-strong: color-mix(in oklch, var(--accent) 90%, transparent);
+    --accent-focus: color-mix(in oklch, var(--accent) 80%, transparent);
+    --surface-overlay: color-mix(in oklch, black 60%, transparent);
+
+    --selection: oklch(0.44 0.04 220deg);
+    --selection-soft: color-mix(in oklch, var(--selection) 18%, transparent);
+
+    --shadow-faint: color-mix(in oklch, black 35%, transparent);
+    --shadow-soft: color-mix(in oklch, black 50%, transparent);
+    --shadow-medium: color-mix(in oklch, black 65%, transparent);
+    --shadow-strong: color-mix(in oklch, black 80%, transparent);
+    --shadow-deep: color-mix(in oklch, black 90%, transparent);
+    --shadow-pop: color-mix(in oklch, black 70%, transparent);
+    --outline-subtle: color-mix(in oklch, white 10%, transparent);
+    --overlay-dark: color-mix(in oklch, black 70%, transparent);
+    --overlay-dim: color-mix(in oklch, oklch(0.42 0.04 var(--dark-neutral-hue)) 35%, transparent);
+    --overlay-darker: color-mix(in oklch, black 85%, transparent);
+    --surface-danger-subtle: color-mix(in oklch, var(--danger) 26%, transparent);
+    --overlay-accent-subtle: color-mix(in oklch, var(--accent) 32%, transparent);
+    --border-strong: color-mix(in oklch, var(--fg) 30%, transparent);
+    --surface-hover: color-mix(in oklch, white 6%, transparent);
+    --overlay-accent-strong: color-mix(in oklch, var(--accent) 55%, transparent);
+    --overlay-backdrop: color-mix(in oklch, oklch(0.1 0.015 var(--dark-neutral-hue)) 70%, transparent);
+    --overlay-shadow: color-mix(in oklch, oklch(0.12 0.015 var(--dark-neutral-hue)) 55%, transparent);
+
+    --success: oklch(0.62 0.16 var(--success-hue));
+    --warning: oklch(0.68 0.17 var(--warning-hue));
+    --danger: oklch(0.60 0.2 var(--danger-hue));
+
+    --success-subtle: color-mix(in oklch, var(--success) 20%, transparent);
+    --warning-subtle: color-mix(in oklch, var(--warning) 20%, transparent);
+    --danger-border: color-mix(in oklch, var(--danger) 45%, transparent);
+    --danger-soft: color-mix(in oklch, var(--danger) 24%, transparent);
+    --danger-subtle: color-mix(in oklch, var(--danger) 18%, transparent);
+
+    --row-hover-bg: color-mix(in oklch, white 4%, transparent);
+    --row-active-bg: color-mix(in oklch, var(--selection) 20%, transparent);
+    --sidebar-hover-bg: color-mix(in oklch, white 6%, transparent);
+    --sidebar-active-bg: color-mix(in oklch, var(--selection) 26%, transparent);
+    --selection-ring: oklch(0.68 0.16 var(--dark-foreground-hue));
+    --sidebar-active-pill-border: color-mix(in oklch, var(--accent) 72%, transparent);
+    --link: color-mix(in oklch, var(--accent) 92%, transparent);
+    --link-visited: color-mix(in oklch, var(--accent) 70%, white 20%);
+    --preview-nav-bg: oklch(0.3 0.04 var(--dark-neutral-hue));
+    --preview-nav-bg-hover: oklch(0.35 0.04 var(--dark-neutral-hue));
+    --preview-nav-fg: var(--fg);
+    --text-on-dark: color-mix(in oklch, white 92%, transparent);
+    --surface-ink-soft: color-mix(in oklch, white 12%, transparent);
+  }
+}
+
+html,
+body {
+  height: 100%;
+}
+
+body {
+  margin: 0;
+  background: var(--bg);
+  color: var(--fg);
+  overflow: hidden;
+}
+
+body.has-main-content {
+  background: var(--surface);
+}
+
+a {
+  color: var(--accent);
+  text-decoration: underline;
+  text-decoration-thickness: 1px;
+  text-underline-offset: 0.18em;
+  transition: color 0.15s ease, text-decoration-color 0.15s ease;
+}
+
+a:visited {
+  color: var(--link-visited);
+}
+
+a:hover,
+a:focus-visible {
+  color: var(--accent-hover);
+  outline: none;
+  text-decoration-color: currentColor;
+}
+
+#app {
+  height: 100%;
+}
+