tailwind.css

@import "tailwindcss";
@source "./src/**/*.{rs,html,css}";

/* DaisyUI plugin with minimal base themes */
@plugin "daisyui" {
  themes: light --default, dark --prefersdark;
}

/* ============================================
   Spillway Design System
   "Dense, not cluttered. Fast, not flashy."
   ============================================

   Custom DaisyUI themes mapping DESIGN.md colors
   to DaisyUI's semantic color system.
*/

/* ----- Spillway Light Theme ----- */
@plugin "daisyui/theme" {
  name: "light";
  default: true;
  color-scheme: light;

  /* Base colors (backgrounds) */
  --color-base-100: oklch(98.04% 0 0);        /* #fafafa - page background */
  --color-base-200: oklch(100% 0 0);          /* #ffffff - cards, panels */
  --color-base-300: oklch(93% 0 0);           /* #ededed - borders, dividers */
  --color-base-content: oklch(15.24% 0 0);    /* #171717 - primary text */

  /* Primary action color */
  --color-primary: oklch(51.12% 0.2 264);     /* #2563eb - Blue 600 */
  --color-primary-content: oklch(100% 0 0);

  /* Secondary for metadata/hints */
  --color-secondary: oklch(40% 0 0);          /* #525252 - secondary text */
  --color-secondary-content: oklch(100% 0 0);

  /* Accent for special highlights */
  --color-accent: oklch(51.12% 0.2 264);      /* #2563eb - same as primary */
  --color-accent-content: oklch(100% 0 0);

  /* Neutral for muted elements */
  --color-neutral: oklch(70% 0 0);            /* #a3a3a3 - muted text */
  --color-neutral-content: oklch(20% 0 0);

  /* Semantic colors */
  --color-info: oklch(62% 0.15 250);          /* #60a5fa - links */
  --color-info-content: oklch(100% 0 0);
  --color-success: oklch(59.59% 0.18 145);    /* #16a34a - Green 600 */
  --color-success-content: oklch(100% 0 0);
  --color-warning: oklch(79.52% 0.17 86);     /* #eab308 - Yellow 500 (stars) */
  --color-warning-content: oklch(20% 0 0);
  --color-error: oklch(52.54% 0.22 27);       /* #dc2626 - Red 600 */
  --color-error-content: oklch(100% 0 0);

  /* Component styling - minimal, utilitarian */
  --radius-selector: 0.375rem;                /* 6px - buttons, badges */
  --radius-field: 0.375rem;                   /* 6px - inputs */
  --radius-box: 0.5rem;                       /* 8px - cards, modals */
  --border: 1px;
  --depth: 0;                                 /* No shadows - flat design */
  --noise: 0;
}

/* ----- Spillway Dark Theme ----- */
@plugin "daisyui/theme" {
  name: "dark";
  prefersdark: true;
  color-scheme: dark;

  /* Base colors (backgrounds) */
  --color-base-100: oklch(7.42% 0 0);         /* #0d0d0d - page background */
  --color-base-200: oklch(11.76% 0 0);        /* #151515 - cards, panels */
  --color-base-300: oklch(18% 0 0);           /* #262626 - borders, dividers */
  --color-base-content: oklch(91% 0 0);       /* #e5e5e5 - primary text */

  /* Primary action color */
  --color-primary: oklch(58.04% 0.19 264);    /* #3b82f6 - Blue 500 */
  --color-primary-content: oklch(100% 0 0);

  /* Secondary for metadata/hints */
  --color-secondary: oklch(70% 0 0);          /* #a3a3a3 - secondary text */
  --color-secondary-content: oklch(10% 0 0);

  /* Accent for special highlights */
  --color-accent: oklch(58.04% 0.19 264);     /* #3b82f6 */
  --color-accent-content: oklch(100% 0 0);

  /* Neutral for muted elements */
  --color-neutral: oklch(40% 0 0);            /* #525252 - muted text */
  --color-neutral-content: oklch(90% 0 0);

  /* Semantic colors */
  --color-info: oklch(70% 0.15 250);          /* #60a5fa - links */
  --color-info-content: oklch(10% 0 0);
  --color-success: oklch(59.59% 0.18 145);    /* #16a34a */
  --color-success-content: oklch(100% 0 0);
  --color-warning: oklch(79.52% 0.17 86);     /* #eab308 */
  --color-warning-content: oklch(20% 0 0);
  --color-error: oklch(52.54% 0.22 27);       /* #dc2626 */
  --color-error-content: oklch(100% 0 0);

  /* Component styling */
  --radius-selector: 0.375rem;
  --radius-field: 0.375rem;
  --radius-box: 0.5rem;
  --border: 1px;
  --depth: 0;
  --noise: 0;
}

/* ----- CSS Custom Properties ----- */
:root {
  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont,
               "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;
  --font-article: Charter, "Bitstream Charter", "Sitka Text", Cambria,
                  Georgia, serif;

  /* Spacing base unit: 4px */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;

  /* Animation timing */
  --duration-fast: 100ms;
  --duration-normal: 150ms;
  --duration-slow: 200ms;
  --duration-slower: 300ms;

  /* Easing curves */
  --ease-default: cubic-bezier(0.4, 0, 0.2, 1);
  --ease-in: cubic-bezier(0.4, 0, 1, 1);
  --ease-out: cubic-bezier(0, 0, 0.2, 1);

  /* Layout dimensions */
  --sidebar-width: 240px;
  --article-list-width: 320px;
  --article-max-width: 680px;
  --article-row-height: 64px;

  /* Light mode semantic colors for custom components */
  --color-bg-base: #fafafa;
  --color-bg-surface: #ffffff;
  --color-bg-elevated: #ffffff;
  --color-bg-active: #f0f4ff;
  --color-border-default: #e5e5e5;
  --color-border-strong: #d4d4d4;
  --color-text-primary: #171717;
  --color-text-secondary: #525252;
  --color-text-muted: #a3a3a3;
  --color-text-link: #2563eb;
  --color-accent-primary: #2563eb;
  --color-accent-star: #eab308;
  --color-accent-success: #16a34a;
  --color-accent-error: #dc2626;
  --color-unread-dot: #2563eb;
}

/* Dark mode overrides for custom components */
[data-theme="dark"] {
  --color-bg-base: #0d0d0d;
  --color-bg-surface: #151515;
  --color-bg-elevated: #1a1a1a;
  --color-bg-active: #1e2433;
  --color-border-default: #262626;
  --color-border-strong: #333333;
  --color-text-primary: #e5e5e5;
  --color-text-secondary: #a3a3a3;
  --color-text-muted: #525252;
  --color-text-link: #60a5fa;
  --color-accent-primary: #3b82f6;
  --color-accent-star: #eab308;
  --color-accent-success: #16a34a;
  --color-accent-error: #dc2626;
  --color-unread-dot: #3b82f6;
}

/* System dark mode fallback */
@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --color-bg-base: #0d0d0d;
    --color-bg-surface: #151515;
    --color-bg-elevated: #1a1a1a;
    --color-bg-active: #1e2433;
    --color-border-default: #262626;
    --color-border-strong: #333333;
    --color-text-primary: #e5e5e5;
    --color-text-secondary: #a3a3a3;
    --color-text-muted: #525252;
    --color-text-link: #60a5fa;
    --color-accent-primary: #3b82f6;
    --color-accent-star: #eab308;
    --color-accent-success: #16a34a;
    --color-accent-error: #dc2626;
    --color-unread-dot: #3b82f6;
  }
}

/* ----- Base Styles ----- */
html {
  font-family: var(--font-sans);
  scroll-behavior: smooth;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

/* Respect reduced motion preference */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* ----- Custom Scrollbar ----- */
::-webkit-scrollbar {
  width: 8px;
  height: 8px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-text-muted);
  border-radius: 4px;
  opacity: 0.3;
}

::-webkit-scrollbar-thumb:hover {
  opacity: 0.5;
}

/* Firefox scrollbar */
* {
  scrollbar-width: thin;
  scrollbar-color: var(--color-text-muted) transparent;
}

/* ----- Typography ----- */

/* Article body uses serif font */
.font-article {
  font-family: var(--font-article);
}

/* Type scale utilities */
.text-article {
  font-size: 18px;
  line-height: 1.7;
}

/* Slight negative letter-spacing for headings */
h1, h2, h3, .heading {
  letter-spacing: -0.01em;
}

/* ----- Prose (Article Content) ----- */
.prose {
  max-width: var(--article-max-width);
  font-family: var(--font-article);
  font-size: 18px;
  line-height: 1.7;
  color: var(--color-text-primary);
}

.prose p {
  margin-bottom: 1.5em;
}

.prose h1,
.prose h2,
.prose h3,
.prose h4 {
  font-family: var(--font-sans);
  font-weight: 600;
  letter-spacing: -0.01em;
  margin-top: 2em;
  margin-bottom: 0.75em;
  color: var(--color-text-primary);
}

.prose h1 { font-size: 1.75rem; line-height: 1.3; }
.prose h2 { font-size: 1.5rem; line-height: 1.35; }
.prose h3 { font-size: 1.25rem; line-height: 1.4; }

.prose a {
  color: var(--color-text-link);
  text-decoration: underline;
  text-underline-offset: 2px;
  transition: opacity var(--duration-fast) var(--ease-default);
}

.prose a:hover {
  opacity: 0.8;
}

.prose img {
  max-width: 100%;
  height: auto;
  border-radius: 8px;
  margin: 1.5em 0;
}

.prose pre {
  font-family: var(--font-mono);
  font-size: 14px;
  line-height: 1.5;
  background: var(--color-bg-surface);
  border: 1px solid var(--color-border-default);
  border-radius: 8px;
  padding: 1rem;
  overflow-x: auto;
  margin: 1.5em 0;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background: var(--color-bg-surface);
  padding: 0.125em 0.375em;
  border-radius: 4px;
}

.prose pre code {
  background: transparent;
  padding: 0;
  border-radius: 0;
}

.prose blockquote {
  border-left: 3px solid var(--color-accent-primary);
  padding-left: 1rem;
  margin: 1.5em 0;
  font-style: italic;
  color: var(--color-text-secondary);
}

.prose ul,
.prose ol {
  margin: 1em 0;
  padding-left: 1.5em;
}

.prose li {
  margin: 0.5em 0;
}

.prose hr {
  border: none;
  border-top: 1px solid var(--color-border-default);
  margin: 2em 0;
}

/* ----- Component Patterns ----- */

/* Sidebar feed item */
.feed-item {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-2) var(--space-3);
  border-radius: 6px;
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-default);
  border-left: 2px solid transparent;
}

.feed-item:hover {
  background: var(--color-bg-surface);
}

.feed-item.selected {
  background: var(--color-bg-active);
  border-left-color: var(--color-accent-primary);
}

.feed-item.has-unread .feed-title {
  font-weight: 500;
}

.feed-item.all-read .feed-title {
  color: var(--color-text-secondary);
}

/* Feed favicon fallback */
.feed-favicon {
  width: 16px;
  height: 16px;
  border-radius: 4px;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-surface);
  font-size: 10px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Article row */
.article-row {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  padding: var(--space-3) var(--space-4);
  min-height: var(--article-row-height);
  border-bottom: 1px solid var(--color-border-default);
  cursor: pointer;
  transition: background var(--duration-fast) var(--ease-default);
}

.article-row:hover {
  background: var(--color-bg-surface);
}

.article-row.selected {
  background: var(--color-bg-active);
}

.article-row.unread .article-title {
  font-weight: 500;
}

.article-row.read {
  opacity: 0.7;
}

.article-row.read .article-title {
  color: var(--color-text-secondary);
}

/* Unread indicator dot */
.unread-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--color-unread-dot);
  flex-shrink: 0;
  margin-top: 6px;
}

/* Star icon */
.star-icon {
  color: var(--color-accent-star);
  flex-shrink: 0;
}

.star-icon.unfilled {
  color: var(--color-text-muted);
}

/* Unread count badge */
.unread-badge {
  font-size: 11px;
  font-weight: 500;
  padding: 2px 6px;
  border-radius: 10px;
  background: var(--color-accent-primary);
  color: white;
  min-width: 18px;
  text-align: center;
}

.unread-badge.muted {
  background: var(--color-text-muted);
  opacity: 0.5;
}

/* ----- Button Patterns ----- */

/* Ghost button (icon only) */
.btn-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 6px;
  background: transparent;
  color: var(--color-text-secondary);
  cursor: pointer;
  transition: all var(--duration-fast) var(--ease-default);
  border: none;
}

.btn-icon:hover {
  background: var(--color-bg-surface);
  color: var(--color-text-primary);
}

.btn-icon:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

/* ----- Focus States ----- */
:focus-visible {
  outline: 2px solid var(--color-accent-primary);
  outline-offset: 2px;
}

/* Remove default focus for mouse users */
:focus:not(:focus-visible) {
  outline: none;
}

/* ----- Line Clamp ----- */
.line-clamp-1 {
  display: -webkit-box;
  -webkit-line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.line-clamp-2 {
  display: -webkit-box;
  -webkit-line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

/* ----- Mobile Safe Areas ----- */
.safe-area-bottom {
  padding-bottom: env(safe-area-inset-bottom, 0);
}

/* ----- Animations ----- */

/* Slide up for bottom sheets */
@keyframes slide-up {
  from {
    transform: translateY(100%);
    opacity: 0;
  }
  to {
    transform: translateY(0);
    opacity: 1;
  }
}

.animate-slide-up {
  animation: slide-up var(--duration-slower) var(--ease-out);
}

/* Fade in */
@keyframes fade-in {
  from { opacity: 0; }
  to { opacity: 1; }
}

.animate-fade-in {
  animation: fade-in var(--duration-slow) var(--ease-out);
}

/* ----- Mobile Responsive ----- */
@media (max-width: 767px) {
  /* Larger touch targets */
  .btn-icon {
    width: 44px;
    height: 44px;
  }

  /* Article prose adjustments */
  .prose {
    font-size: 16px;
    line-height: 1.75;
  }

  .prose h1 { font-size: 1.5rem; }
  .prose h2 { font-size: 1.25rem; }
  .prose h3 { font-size: 1.125rem; }
}

/* ----- Backdrop Blur Fallback ----- */
@supports not (backdrop-filter: blur(8px)) {
  .backdrop-blur-sm {
    background-color: var(--color-bg-surface);
    opacity: 0.98;
  }
}

/* ----- iOS Overscroll ----- */
.overscroll-bounce {
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}