/* ==========================================================================
   AgentOps — agentops.co.uk
   Flat, tile-inspired design system. Tokens first: light is the default,
   dark comes via OS preference or the header toggle (data-theme on <html>).
   ========================================================================== */

:root {
  color-scheme: light;

  --ground: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --ink: #111624;
  --ink-2: #59627a;
  --line: #e1e5f0;
  --line-strong: #c6cde0;

  --accent: #2a55e0;
  --accent-ink: #ffffff;
  --accent-soft: rgba(42, 85, 224, 0.08);
  --grid-line: rgba(17, 22, 36, 0.05);

  /* Tile hues — used by app icons via js/apps.js `color` field */
  --hue-cobalt: #2a55e0;
  --hue-teal: #0e8578;
  --hue-amber: #b26205;
  --hue-magenta: #c0266f;
  --hue-plum: #7a3bd1;
  --hue-green: #1e8a3c;
  --hue-slate: #59627a;

  --icon-moon: block;
  --icon-sun: none;

  --font-display: "Segoe UI Variable Display", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Segoe UI Variable Text", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "Cascadia Code", "Consolas", ui-monospace, "SF Mono", monospace;

  --radius: 4px;
  --shadow-lift: 0 14px 32px -18px rgba(17, 22, 36, 0.28);
}

@media (prefers-color-scheme: dark) {
  :root {
    color-scheme: dark;
    --ground: #0b0e15;
    --surface: #121724;
    --surface-2: #1a2132;
    --ink: #e9edf7;
    --ink-2: #9aa4bd;
    --line: #242c40;
    --line-strong: #35405c;
    --accent: #6d8fff;
    --accent-ink: #0b0e15;
    --accent-soft: rgba(109, 143, 255, 0.1);
    --grid-line: rgba(233, 237, 247, 0.045);
    --hue-cobalt: #3d63ea;
    --hue-teal: #109384;
    --hue-amber: #bd6c08;
    --hue-magenta: #c93078;
    --hue-plum: #8547d8;
    --hue-green: #23964a;
    --hue-slate: #6b7590;
    --icon-moon: none;
    --icon-sun: block;
    --shadow-lift: 0 14px 32px -16px rgba(0, 0, 0, 0.55);
  }
}

:root[data-theme="light"] {
  color-scheme: light;
  --ground: #f6f7fb;
  --surface: #ffffff;
  --surface-2: #eef1f8;
  --ink: #111624;
  --ink-2: #59627a;
  --line: #e1e5f0;
  --line-strong: #c6cde0;
  --accent: #2a55e0;
  --accent-ink: #ffffff;
  --accent-soft: rgba(42, 85, 224, 0.08);
  --grid-line: rgba(17, 22, 36, 0.05);
  --hue-cobalt: #2a55e0;
  --hue-teal: #0e8578;
  --hue-amber: #b26205;
  --hue-magenta: #c0266f;
  --hue-plum: #7a3bd1;
  --hue-green: #1e8a3c;
  --hue-slate: #59627a;
  --icon-moon: block;
  --icon-sun: none;
  --shadow-lift: 0 14px 32px -18px rgba(17, 22, 36, 0.28);
}

:root[data-theme="dark"] {
  color-scheme: dark;
  --ground: #0b0e15;
  --surface: #121724;
  --surface-2: #1a2132;
  --ink: #e9edf7;
  --ink-2: #9aa4bd;
  --line: #242c40;
  --line-strong: #35405c;
  --accent: #6d8fff;
  --accent-ink: #0b0e15;
  --accent-soft: rgba(109, 143, 255, 0.1);
  --grid-line: rgba(233, 237, 247, 0.045);
  --hue-cobalt: #3d63ea;
  --hue-teal: #109384;
  --hue-amber: #bd6c08;
  --hue-magenta: #c93078;
  --hue-plum: #8547d8;
  --hue-green: #23964a;
  --hue-slate: #6b7590;
  --icon-moon: none;
  --icon-sun: block;
  --shadow-lift: 0 14px 32px -16px rgba(0, 0, 0, 0.55);
}

/* --- Reset ---------------------------------------------------------------- */

*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  -webkit-text-size-adjust: 100%;
}

@media (prefers-reduced-motion: no-preference) {
  html {
    scroll-behavior: smooth;
  }
}

body {
  font-family: var(--font-body);
  background: var(--ground);
  color: var(--ink);
  line-height: 1.6;
  font-size: 1rem;
  -webkit-font-smoothing: antialiased;
}

img,
svg,
canvas {
  display: block;
  max-width: 100%;
}

a {
  color: var(--accent);
}

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

section[id] {
  scroll-margin-top: 84px;
}

.wrap {
  width: min(1140px, 100% - 2.5rem);
  margin-inline: auto;
}

/* --- Header ---------------------------------------------------------------- */

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--ground) 84%, transparent);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 2rem;
  height: 64px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
  color: var(--ink);
  text-decoration: none;
}

.mark-cell {
  fill: var(--ink-2);
  opacity: 0.45;
}

.mark-cell.on {
  fill: var(--accent);
  opacity: 1;
}

.site-nav {
  margin-left: auto;
  display: flex;
  align-items: center;
  gap: 1.4rem;
}

.site-nav a {
  color: var(--ink-2);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
  transition: color 0.15s ease;
}

.site-nav a:hover {
  color: var(--ink);
}

.theme-toggle {
  width: 36px;
  height: 36px;
  display: grid;
  place-items: center;
  border: 1px solid var(--line);
  border-radius: var(--radius);
  background: var(--surface);
  color: var(--ink-2);
  cursor: pointer;
  transition: color 0.15s ease, border-color 0.15s ease;
}

.theme-toggle:hover {
  color: var(--ink);
  border-color: var(--line-strong);
}

.icon-moon {
  display: var(--icon-moon);
}

.icon-sun {
  display: var(--icon-sun);
}

/* --- Hero ------------------------------------------------------------------ */

.hero {
  position: relative;
  overflow: hidden;
  border-bottom: 1px solid var(--line);
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 54px 54px;
}

#tile-field {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  pointer-events: none;
  mask-image: linear-gradient(100deg, transparent 25%, #000 60%);
  -webkit-mask-image: linear-gradient(100deg, transparent 25%, #000 60%);
}

.hero-inner {
  position: relative;
  max-width: 720px;
  padding-block: clamp(4.5rem, 10vw, 8rem);
}

.eyebrow {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.eyebrow::before {
  content: "";
  width: 8px;
  height: 8px;
  background: var(--accent);
  flex-shrink: 0;
}

.hero-title {
  margin-top: 1.1rem;
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 4rem);
  line-height: 1.05;
  letter-spacing: -0.025em;
  font-weight: 700;
  text-wrap: balance;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
}

.hero-lede {
  margin-top: 1.4rem;
  font-size: 1.125rem;
  color: var(--ink-2);
  max-width: 56ch;
}

.hero-cta {
  margin-top: 2.2rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
}

/* --- Buttons ---------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 0.7rem 1.25rem;
  border-radius: var(--radius);
  border: 1px solid transparent;
  text-decoration: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--accent-ink);
}

.btn-primary:hover {
  transform: translateY(-1px);
  box-shadow: var(--shadow-lift);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--ink);
  background: transparent;
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

/* --- Sections ---------------------------------------------------------------- */

.section {
  padding-block: clamp(3.5rem, 8vw, 6.5rem);
}

.section-head {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
  margin-bottom: 2.2rem;
}

.section-title {
  margin-top: 0.7rem;
  font-family: var(--font-display);
  font-size: clamp(1.6rem, 3.2vw, 2.15rem);
  letter-spacing: -0.02em;
  font-weight: 700;
  text-wrap: balance;
}

.app-count {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  color: var(--ink-2);
  padding-bottom: 0.4rem;
}

.section-lede {
  max-width: 62ch;
  color: var(--ink-2);
  margin: -1rem 0 2.2rem;
}

/* --- App grid ---------------------------------------------------------------- */

.app-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(290px, 1fr));
  gap: 1.1rem;
}

.app-grid .empty {
  grid-column: 1 / -1;
  border: 1px dashed var(--line-strong);
  border-radius: var(--radius);
  padding: 3rem 1.5rem;
  text-align: center;
  color: var(--ink-2);
}

.tile {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 0.9rem;
  background: var(--surface);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: 1.4rem;
  color: inherit;
  text-decoration: none;
  transition: border-color 0.18s ease, transform 0.18s ease, box-shadow 0.18s ease;
}

a.tile:hover,
a.tile:focus-visible {
  border-color: var(--accent);
  transform: translateY(-3px);
  box-shadow: var(--shadow-lift);
}

.tile.coming {
  border-style: dashed;
}

/* "Most popular" highlight (popular: true in js/apps.js) */
.tile.popular {
  border-color: var(--accent);
  box-shadow: 0 0 0 1px var(--accent) inset;
}

.tile-badge {
  position: absolute;
  top: 0;
  left: 1.25rem;
  transform: translateY(-50%);
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent-ink);
  background: var(--accent);
  border-radius: 2px;
  padding: 0.3rem 0.55rem;
  line-height: 1;
  white-space: nowrap;
}

.tile.coming .tile-icon {
  opacity: 0.55;
}

.tile-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
}

.tile-icon {
  width: 42px;
  height: 42px;
  flex-shrink: 0;
  display: grid;
  place-items: center;
  border-radius: var(--radius);
  background: var(--hue, var(--hue-slate));
  color: #fff;
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 0.92rem;
  letter-spacing: 0.02em;
}

.tile-tag {
  font-family: var(--font-mono);
  font-size: 0.68rem;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--ink-2);
  border: 1px solid var(--line);
  border-radius: 2px;
  padding: 0.3rem 0.55rem;
  white-space: nowrap;
}

.tile-name {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: 1.2rem;
  letter-spacing: -0.01em;
}

.tile-status {
  display: inline-block;
  white-space: nowrap;
  margin-left: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--hue-amber);
  vertical-align: 0.15em;
}

.tile-desc {
  color: var(--ink-2);
  font-size: 0.95rem;
  line-height: 1.55;
}

.tile-req {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
}

.req-label {
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--accent);
  margin-right: 0.2rem;
}

.req-chip {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  padding: 0.22rem 0.5rem;
  border: 1px solid var(--line);
  border-radius: 2px;
  background: var(--surface-2);
  color: var(--ink-2);
  white-space: nowrap;
}

.tile-foot {
  margin-top: auto;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 0.75rem;
  padding-top: 0.9rem;
  border-top: 1px dashed var(--line);
}

.tile-url {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--ink-2);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.tile-open {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--accent);
  white-space: nowrap;
}

.tile-open .arrow {
  transition: transform 0.18s ease;
}

a.tile:hover .tile-open .arrow {
  transform: translateX(3px);
}

/* Tiles fade in once rendered (JS adds .in with a stagger) */
@media (prefers-reduced-motion: no-preference) {
  .app-grid.animate .tile {
    opacity: 0;
    transform: translateY(10px);
    transition: opacity 0.45s ease, transform 0.45s ease, border-color 0.18s ease, box-shadow 0.18s ease;
  }

  .app-grid.animate .tile.in {
    opacity: 1;
    transform: none;
  }

  .app-grid.animate a.tile.in:hover,
  .app-grid.animate a.tile.in:focus-visible {
    transform: translateY(-3px);
  }
}

/* --- About / principles ------------------------------------------------------- */

.about {
  border-top: 1px solid var(--line);
  background: var(--surface);
}

.about-lede {
  max-width: 62ch;
  color: var(--ink-2);
  margin-bottom: 2.6rem;
}

.principles {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: 1.6rem;
}

.principle {
  border-top: 2px solid var(--line-strong);
  padding-top: 1.1rem;
}

.principle-key {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
}

.principle h3 {
  margin: 0.5rem 0 0.35rem;
  font-family: var(--font-display);
  font-size: 1.05rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.principle p {
  color: var(--ink-2);
  font-size: 0.95rem;
}

/* --- Footer -------------------------------------------------------------------- */

.site-footer {
  border-top: 1px solid var(--line);
  padding-block: 2.5rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1.2rem;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-weight: 700;
  color: var(--ink);
}

.footer-note {
  font-size: 0.88rem;
  color: var(--ink-2);
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.2rem;
  font-size: 0.9rem;
}

.footer-links a {
  color: var(--ink-2);
  text-decoration: none;
}

.footer-links a:hover {
  color: var(--accent);
}

/* --- 404 -------------------------------------------------------------------- */

.error-page {
  min-height: calc(100vh - 64px);
  display: grid;
  place-items: center;
  text-align: center;
  padding-block: 4rem;
}

.error-code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.2em;
  color: var(--accent);
}

.error-page h1 {
  margin: 0.8rem 0 0.6rem;
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3rem);
  letter-spacing: -0.02em;
}

.error-page p {
  color: var(--ink-2);
  margin-bottom: 1.8rem;
}
