/* ==========================================================================
   Usharea - design system
   "usha", Sanskrit for dawn. The palette moves from night indigo through
   violet into coral and amber, the way the sky does.
   ========================================================================== */

/* --- Tokens -------------------------------------------------------------- */

:root {
  color-scheme: dark;

  /* Dawn ramp */
  --night:      #080b17;
  --indigo-900: #0d1226;
  --indigo-800: #141b38;
  --indigo-700: #1d2650;
  --violet-500: #6b5bd2;
  --coral-500:  #ff6b5a;
  --coral-400:  #ff8a72;
  --amber-400:  #ffb454;
  --amber-300:  #ffd08a;
  --cream:      #fff4e6;

  /* Semantic */
  --bg:         var(--night);
  --bg-elev:    #0f1428;
  --bg-sunk:    #060812;
  --text:       #eef1fb;
  --text-dim:   #a8b0cd;
  --text-faint: #6f7899;
  --line:       #1e264a;
  --line-soft:  #161d3a;
  --accent:     var(--amber-400);
  --accent-ink: #2a1605;
  --link:       var(--amber-300);
  --ring:       var(--coral-400);
  --ok:         #4ade80;
  --warn:       #fbbf24;
  --err:        #fb7185;

  /* Type */
  --font-display: "Iowan Old Style", "Palatino Linotype", Palatino, Georgia,
                  "Times New Roman", serif;
  --font-body: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
               "Liberation Mono", monospace;

  /* Space and shape */
  --measure: 68ch;
  --shell: 1140px;
  --r-sm: 6px;
  --r-md: 12px;
  --r-lg: 18px;
  --r-full: 999px;
  --shadow: 0 1px 2px rgb(0 0 0 / 0.4), 0 12px 32px -12px rgb(0 0 0 / 0.55);
  --shadow-lift: 0 2px 4px rgb(0 0 0 / 0.4), 0 22px 48px -16px rgb(0 0 0 / 0.65);
  --dur: 180ms;
  --ease: cubic-bezier(0.22, 0.7, 0.3, 1);
}

:root[data-theme="light"] {
  color-scheme: light;
  --bg:         #fdf8f1;
  --bg-elev:    #ffffff;
  --bg-sunk:    #f4ece1;
  --text:       #16192e;
  --text-dim:   #4f5674;
  --text-faint: #7a8199;
  --line:       #e6dccd;
  --line-soft:  #efe7db;
  --accent:     #b4520f;
  --accent-ink: #fff4e6;
  --link:       #a8460c;
  --ring:       #d2431f;
  --ok:         #15803d;
  --warn:       #a16207;
  --err:        #be123c;
  --shadow: 0 1px 2px rgb(63 44 22 / 0.06), 0 12px 28px -14px rgb(63 44 22 / 0.22);
  --shadow-lift: 0 2px 6px rgb(63 44 22 / 0.08), 0 22px 44px -18px rgb(63 44 22 / 0.3);
}

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

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: 5.5rem;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-body);
  font-size: 1rem;
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  overflow-x: hidden;
}

img, svg, video { max-width: 100%; height: auto; display: block; }
button, input, select, textarea { font: inherit; color: inherit; }

h1, h2, h3, h4 {
  font-family: var(--font-display);
  font-weight: 600;
  line-height: 1.15;
  letter-spacing: -0.015em;
  margin: 0 0 0.5em;
  text-wrap: balance;
}
h1 { font-size: clamp(2.2rem, 1.4rem + 3.6vw, 4rem); }
h2 { font-size: clamp(1.6rem, 1.2rem + 1.8vw, 2.35rem); }
h3 { font-size: clamp(1.15rem, 1.05rem + 0.5vw, 1.4rem); }
h4 { font-size: 1.05rem; }

p, li { text-wrap: pretty; }
p { margin: 0 0 1.1em; }

a {
  color: var(--link);
  text-decoration-color: color-mix(in oklab, var(--link) 40%, transparent);
  text-underline-offset: 3px;
}
a:hover { text-decoration-color: currentColor; }

code, kbd, samp, pre { font-family: var(--font-mono); font-size: 0.875em; }
code:not(pre code) {
  background: color-mix(in oklab, var(--accent) 12%, transparent);
  border: 1px solid var(--line);
  border-radius: var(--r-sm);
  padding: 0.12em 0.4em;
  color: var(--text);
}
pre {
  background: var(--bg-sunk);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  padding: 1rem 1.1rem;
  overflow-x: auto;
  line-height: 1.6;
}

hr { border: 0; border-top: 1px solid var(--line); margin: 3rem 0; }

:focus-visible {
  outline: 2px solid var(--ring);
  outline-offset: 3px;
  border-radius: var(--r-sm);
}

::selection {
  background: color-mix(in oklab, var(--coral-500) 45%, transparent);
  color: var(--cream);
}

/* --- Layout -------------------------------------------------------------- */

.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}
@media (max-width: 560px) {
  .shell { width: min(100% - 2rem, var(--shell)); }
}

.section { padding-block: clamp(3.5rem, 2rem + 7vw, 6.5rem); }
.section--tight { padding-block: clamp(2.5rem, 1.5rem + 4vw, 4rem); }
.section + .section { border-top: 1px solid var(--line-soft); }

.stack > * + * { margin-top: 1rem; }
.prose { max-width: var(--measure); }
.prose h2 { margin-top: 2.4em; }
.prose h3 { margin-top: 2em; }
.prose > :first-child { margin-top: 0; }
.prose ul, .prose ol { padding-left: 1.25em; margin-block: 0 1.1em; }
.prose li + li { margin-top: 0.4em; }
.prose blockquote {
  margin: 1.8em 0;
  padding: 0.2em 0 0.2em 1.3em;
  border-left: 3px solid var(--accent);
  color: var(--text-dim);
  font-family: var(--font-display);
  font-size: 1.1em;
  font-style: italic;
}

.eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 1rem;
}
.eyebrow::before {
  content: "";
  width: 1.6rem;
  height: 1px;
  background: currentColor;
  opacity: 0.6;
}

.lede {
  font-size: clamp(1.05rem, 1rem + 0.4vw, 1.28rem);
  color: var(--text-dim);
  line-height: 1.6;
  max-width: 60ch;
}

.skip-link {
  position: absolute;
  left: 0.75rem;
  top: -100%;
  z-index: 100;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--r-md) var(--r-md);
  font-weight: 600;
  text-decoration: none;
  transition: top var(--dur) var(--ease);
}
.skip-link:focus { top: 0; }

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

.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in oklab, var(--bg) 82%, transparent);
  backdrop-filter: blur(14px) saturate(1.4);
  -webkit-backdrop-filter: blur(14px) saturate(1.4);
  border-bottom: 1px solid var(--line-soft);
}
.site-header__inner {
  display: flex;
  align-items: center;
  gap: 1.25rem;
  min-height: 4.25rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-display);
  font-size: 1.22rem;
  font-weight: 600;
  letter-spacing: -0.02em;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}
.brand__mark { width: 30px; height: 30px; flex: none; }
.brand__mark .sun { transform-origin: 16px 20px; }
.brand:hover .brand__mark .sun { animation: rise 700ms var(--ease); }
@keyframes rise {
  from { transform: translateY(5px) scale(0.9); opacity: 0.6; }
  to   { transform: none; opacity: 1; }
}

.nav { display: flex; align-items: center; gap: 0.15rem; }
.nav a {
  display: block;
  padding: 0.5rem 0.8rem;
  border-radius: var(--r-full);
  color: var(--text-dim);
  font-size: 0.925rem;
  font-weight: 500;
  text-decoration: none;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.nav a:hover { color: var(--text); background: var(--bg-elev); }
.nav a[aria-current="page"] { color: var(--text); background: var(--bg-elev); }

.header-actions { display: flex; align-items: center; gap: 0.5rem; }

.icon-btn {
  display: grid;
  place-items: center;
  width: 2.35rem;
  height: 2.35rem;
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  background: var(--bg-elev);
  color: var(--text-dim);
  cursor: pointer;
  transition: color var(--dur) var(--ease), border-color var(--dur) var(--ease),
              transform var(--dur) var(--ease);
}
.icon-btn:hover { color: var(--accent); border-color: var(--accent); }
.icon-btn:active { transform: scale(0.94); }
.icon-btn svg { width: 17px; height: 17px; }
.theme-toggle .moon { display: none; }
:root[data-theme="light"] .theme-toggle .sun-icon { display: none; }
:root[data-theme="light"] .theme-toggle .moon { display: block; }

.nav-toggle { display: none; }

@media (max-width: 860px) {
  .nav-toggle { display: grid; }
  .nav {
    position: fixed;
    inset: 4.25rem 0 auto;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 0.75rem 1.25rem 1.5rem;
    background: var(--bg-elev);
    border-bottom: 1px solid var(--line);
    box-shadow: var(--shadow);
    transform: translateY(-8px);
    opacity: 0;
    visibility: hidden;
    transition: opacity var(--dur) var(--ease), transform var(--dur) var(--ease),
                visibility var(--dur);
  }
  .nav[data-open="true"] { transform: none; opacity: 1; visibility: visible; }
  .nav a { padding: 0.8rem 0.6rem; border-radius: var(--r-md); font-size: 1rem; }
}

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

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.72rem 1.35rem;
  border: 1px solid transparent;
  border-radius: var(--r-full);
  font-size: 0.94rem;
  font-weight: 600;
  line-height: 1.2;
  text-decoration: none;
  cursor: pointer;
  white-space: nowrap;
  transition: transform var(--dur) var(--ease), background var(--dur) var(--ease),
              border-color var(--dur) var(--ease), box-shadow var(--dur) var(--ease);
}
.btn:active { transform: translateY(1px); }
.btn svg { width: 16px; height: 16px; flex: none; }

.btn--primary {
  background: linear-gradient(135deg, var(--amber-400), var(--coral-500));
  color: #2a1605;
  box-shadow: 0 8px 22px -10px color-mix(in oklab, var(--coral-500) 80%, transparent);
}
.btn--primary:hover {
  box-shadow: 0 12px 30px -10px color-mix(in oklab, var(--coral-500) 90%, transparent);
}

.btn--ghost {
  border-color: var(--line);
  background: var(--bg-elev);
  color: var(--text);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn--sm { padding: 0.45rem 0.9rem; font-size: 0.85rem; }
.btn[disabled], .btn[aria-disabled="true"] { opacity: 0.55; pointer-events: none; }

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

.hero {
  position: relative;
  isolation: isolate;
  padding-block: clamp(4rem, 2rem + 10vw, 8.5rem) clamp(3.5rem, 2rem + 7vw, 6rem);
  overflow: hidden;
}
.hero__sky {
  position: absolute;
  inset: -30% -10% auto;
  height: 130%;
  z-index: -2;
  background:
    radial-gradient(60% 42% at 50% 78%, color-mix(in oklab, var(--amber-400) 32%, transparent) 0%, transparent 62%),
    radial-gradient(78% 55% at 22% 88%, color-mix(in oklab, var(--coral-500) 26%, transparent) 0%, transparent 68%),
    radial-gradient(70% 60% at 82% 70%, color-mix(in oklab, var(--violet-500) 30%, transparent) 0%, transparent 70%);
  filter: blur(14px);
  /* Settles once on load. A blurred layer this large is expensive to repaint,
     so it is deliberately not an infinite loop - the sky is meant to sit
     still, and a permanently animating background is a battery cost the rest
     of this site would not justify. */
  animation: dawn 2.4s var(--ease) both;
}
@keyframes dawn {
  from { transform: translate3d(-2%, 3%, 0) scale(1.06); opacity: 0.35; }
  to   { transform: none; opacity: 1; }
}
.hero__grid {
  position: absolute;
  inset: 0;
  z-index: -1;
  background-image:
    linear-gradient(to right, color-mix(in oklab, var(--text) 5%, transparent) 1px, transparent 1px),
    linear-gradient(to bottom, color-mix(in oklab, var(--text) 5%, transparent) 1px, transparent 1px);
  background-size: 64px 64px;
  mask-image: radial-gradient(72% 68% at 50% 30%, #000 0%, transparent 78%);
  -webkit-mask-image: radial-gradient(72% 68% at 50% 30%, #000 0%, transparent 78%);
}

/* The ramp stops at a light periwinkle rather than the deep violet token:
   gradient text still has to pass contrast against a near-black page. */
.hero__title .glow {
  background: linear-gradient(100deg, var(--amber-300) 6%, var(--coral-400) 48%, #b9aef5 94%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}
:root[data-theme="light"] .hero__title .glow {
  background: linear-gradient(100deg, #b4520f 8%, #d2431f 50%, #5b47b8 96%);
  -webkit-background-clip: text;
  background-clip: text;
}

.hero__actions { display: flex; flex-wrap: wrap; gap: 0.75rem; margin-top: 2rem; }

.hero__meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.75rem;
  margin-top: 2.75rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.05em;
  color: var(--text-faint);
}
.hero__meta b { color: var(--text-dim); font-weight: 600; }

/* --- Cards and grids ----------------------------------------------------- */

.grid { display: grid; gap: 1.25rem; }
.grid--3 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 275px), 1fr)); }
.grid--2 { grid-template-columns: repeat(auto-fit, minmax(min(100%, 340px), 1fr)); }

.card {
  position: relative;
  padding: 1.6rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  transition: transform var(--dur) var(--ease), border-color var(--dur) var(--ease),
              box-shadow var(--dur) var(--ease);
}
.card > :last-child { margin-bottom: 0; }
.card--hover:hover {
  transform: translateY(-3px);
  border-color: color-mix(in oklab, var(--accent) 45%, var(--line));
  box-shadow: var(--shadow-lift);
}
.card h3 { margin-bottom: 0.45rem; }
.card p { color: var(--text-dim); font-size: 0.94rem; margin-bottom: 0; }

.card__icon {
  display: grid;
  place-items: center;
  width: 2.6rem;
  height: 2.6rem;
  margin-bottom: 1.1rem;
  border-radius: var(--r-md);
  background: color-mix(in oklab, var(--accent) 14%, transparent);
  border: 1px solid color-mix(in oklab, var(--accent) 26%, transparent);
  color: var(--accent);
}
.card__icon svg { width: 19px; height: 19px; }

.section-head { max-width: var(--measure); margin-bottom: 2.5rem; }

/* --- Metrics ------------------------------------------------------------- */

.metrics {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 170px), 1fr));
  gap: 1px;
  background: var(--line);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.metric { background: var(--bg-elev); padding: 1.4rem 1.5rem; }
.metric__value {
  font-family: var(--font-display);
  font-size: clamp(1.7rem, 1.4rem + 1.1vw, 2.3rem);
  line-height: 1;
  letter-spacing: -0.03em;
  color: var(--text);
}
.metric__value small {
  font-size: 0.5em;
  color: var(--text-faint);
  margin-left: 0.2em;
  letter-spacing: 0;
}
.metric__label {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.11em;
  text-transform: uppercase;
  color: var(--text-faint);
}

/* --- Data / diagnostics -------------------------------------------------- */

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  overflow: hidden;
}
.panel__head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 0.9rem 1.25rem;
  background: var(--bg-sunk);
  border-bottom: 1px solid var(--line);
}
.panel__title {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--text-dim);
  margin: 0;
}
.panel__head .push { margin-left: auto; }
.panel__body { padding: 1.25rem; }
.panel__body > :last-child { margin-bottom: 0; }

.dl {
  display: grid;
  grid-template-columns: minmax(9rem, auto) 1fr;
  gap: 0;
  margin: 0;
  font-size: 0.88rem;
}
.dl dt, .dl dd {
  padding: 0.6rem 0;
  border-bottom: 1px solid var(--line-soft);
  margin: 0;
  min-width: 0;
}
.dl dt {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--text-faint);
  padding-right: 1rem;
}
.dl dd { font-family: var(--font-mono); color: var(--text); overflow-wrap: anywhere; }
.dl dt:last-of-type, .dl dd:last-of-type { border-bottom: 0; }
@media (max-width: 520px) {
  .dl { grid-template-columns: 1fr; }
  .dl dt { padding-bottom: 0.1rem; border-bottom: 0; }
  .dl dd { padding-top: 0.15rem; }
}

.pill {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.2rem 0.65rem;
  border-radius: var(--r-full);
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.05em;
  color: var(--text-dim);
}
.pill--ok {
  color: var(--ok);
  border-color: color-mix(in oklab, var(--ok) 40%, transparent);
  background: color-mix(in oklab, var(--ok) 10%, transparent);
}
.pill--warn {
  color: var(--warn);
  border-color: color-mix(in oklab, var(--warn) 40%, transparent);
  background: color-mix(in oklab, var(--warn) 10%, transparent);
}
.pill--err {
  color: var(--err);
  border-color: color-mix(in oklab, var(--err) 40%, transparent);
  background: color-mix(in oklab, var(--err) 10%, transparent);
}

.dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: currentColor;
  box-shadow: 0 0 0 0 currentColor;
  animation: pulse 2.4s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in oklab, currentColor 60%, transparent); }
  70%  { box-shadow: 0 0 0 7px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

/* --- Tabs ---------------------------------------------------------------- */

.tabs {
  display: flex;
  gap: 0.35rem;
  padding: 0.3rem;
  margin-bottom: 1.5rem;
  background: var(--bg-sunk);
  border: 1px solid var(--line);
  border-radius: var(--r-full);
  width: fit-content;
  max-width: 100%;
  overflow-x: auto;
  scrollbar-width: none;
}
.tabs::-webkit-scrollbar { display: none; }
.tab {
  padding: 0.5rem 1.1rem;
  border: 0;
  border-radius: var(--r-full);
  background: transparent;
  color: var(--text-dim);
  font-size: 0.9rem;
  font-weight: 500;
  white-space: nowrap;
  cursor: pointer;
  transition: color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.tab:hover { color: var(--text); }
.tab[aria-selected="true"] {
  background: var(--bg-elev);
  color: var(--text);
  box-shadow: var(--shadow);
}

/* --- Notes list ---------------------------------------------------------- */

.note-list { list-style: none; margin: 0; padding: 0; }
.note-list > li { border-bottom: 1px solid var(--line-soft); }
.note-list > li:first-child { border-top: 1px solid var(--line-soft); }

.note-item {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: 0.35rem 1.5rem;
  align-items: baseline;
  padding: 1.4rem 0.6rem;
  border-radius: var(--r-md);
  text-decoration: none;
  color: inherit;
  transition: background var(--dur) var(--ease), padding-left var(--dur) var(--ease);
}
.note-item:hover { background: var(--bg-elev); padding-left: 1rem; }
.note-item h3 { margin: 0; font-size: 1.2rem; }
.note-item:hover h3 { color: var(--accent); }
.note-item p { grid-column: 1; margin: 0; color: var(--text-dim); font-size: 0.93rem; }
.note-item time {
  grid-row: 1;
  grid-column: 2;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  white-space: nowrap;
}
@media (max-width: 560px) {
  .note-item { grid-template-columns: 1fr; }
  .note-item time { grid-row: auto; grid-column: 1; order: -1; }
}

.tag-row { display: flex; flex-wrap: wrap; gap: 0.4rem; margin-top: 0.9rem; }
.tag {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.06em;
  padding: 0.15rem 0.55rem;
  border-radius: var(--r-full);
  border: 1px solid var(--line);
  color: var(--text-faint);
}

/* --- Article ------------------------------------------------------------- */

.article-head { padding-block: clamp(3rem, 2rem + 5vw, 5rem) 2rem; }
.article-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.5rem 1rem;
  font-family: var(--font-mono);
  font-size: 0.76rem;
  color: var(--text-faint);
  margin-top: 1.5rem;
}
.breadcrumb {
  font-family: var(--font-mono);
  font-size: 0.76rem;
  letter-spacing: 0.06em;
  color: var(--text-faint);
  margin-bottom: 1.25rem;
}
.breadcrumb ol {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin: 0;
  padding: 0;
}
.breadcrumb li + li::before { content: "/"; margin-right: 0.5rem; opacity: 0.5; }
.breadcrumb a { color: var(--text-dim); text-decoration: none; }
.breadcrumb a:hover { color: var(--accent); }

/* --- Forms --------------------------------------------------------------- */

.field { margin-bottom: 1.15rem; }
.field label {
  display: block;
  margin-bottom: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-dim);
}
.field .hint { font-weight: 400; color: var(--text-faint); }
.input, .textarea, .select {
  width: 100%;
  padding: 0.7rem 0.9rem;
  background: var(--bg-sunk);
  border: 1px solid var(--line);
  border-radius: var(--r-md);
  color: var(--text);
  transition: border-color var(--dur) var(--ease), background var(--dur) var(--ease);
}
.input::placeholder, .textarea::placeholder { color: var(--text-faint); }
.input:focus, .textarea:focus, .select:focus {
  border-color: var(--accent);
  background: var(--bg-elev);
  outline: 2px solid color-mix(in oklab, var(--accent) 30%, transparent);
  outline-offset: 0;
}
.textarea { min-height: 8rem; resize: vertical; }
.select { appearance: none; cursor: pointer; }
.field-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(min(100%, 220px), 1fr));
  gap: 0 1rem;
}

.notice {
  padding: 0.9rem 1.1rem;
  border-radius: var(--r-md);
  border: 1px solid var(--line);
  background: var(--bg-sunk);
  font-size: 0.9rem;
}
.notice--ok {
  border-color: color-mix(in oklab, var(--ok) 40%, transparent);
  background: color-mix(in oklab, var(--ok) 8%, transparent);
}
.notice--err {
  border-color: color-mix(in oklab, var(--err) 40%, transparent);
  background: color-mix(in oklab, var(--err) 8%, transparent);
}
.notice > :last-child { margin-bottom: 0; }
.notice strong { color: var(--text); }

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

.site-footer {
  border-top: 1px solid var(--line);
  background: var(--bg-sunk);
  padding-block: 3.5rem 2rem;
  margin-top: 2rem;
}
.footer-grid {
  display: grid;
  grid-template-columns: minmax(0, 1.6fr) repeat(auto-fit, minmax(140px, 1fr));
  gap: 2.5rem;
}
.footer-col h4 {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.13em;
  text-transform: uppercase;
  color: var(--text-faint);
  margin-bottom: 0.9rem;
}
.footer-col ul { list-style: none; margin: 0; padding: 0; }
.footer-col li + li { margin-top: 0.55rem; }
.footer-col a { color: var(--text-dim); text-decoration: none; font-size: 0.92rem; }
.footer-col a:hover { color: var(--accent); }
.footer-bottom {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.5rem;
  align-items: center;
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line-soft);
  font-size: 0.82rem;
  color: var(--text-faint);
}
.footer-bottom p { margin: 0; }
.footer-bottom .spacer { margin-left: auto; }

/* --- htmx ---------------------------------------------------------------- */

.htmx-indicator { opacity: 0; transition: opacity var(--dur) var(--ease); }
.htmx-request .htmx-indicator,
.htmx-request.htmx-indicator { opacity: 1; }

.spinner {
  width: 15px;
  height: 15px;
  border: 2px solid color-mix(in oklab, currentColor 25%, transparent);
  border-top-color: currentColor;
  border-radius: 50%;
  animation: spin 620ms linear infinite;
}
@keyframes spin { to { transform: rotate(360deg); } }

.htmx-swapping { opacity: 0; transition: opacity var(--dur) var(--ease); }
.htmx-added { opacity: 0; }
.htmx-settling { opacity: 1; }

.progress-bar {
  position: fixed;
  inset: 0 auto auto 0;
  height: 2px;
  width: 0;
  z-index: 100;
  background: linear-gradient(90deg, var(--amber-400), var(--coral-500));
  opacity: 0;
  transition: width 400ms var(--ease), opacity 200ms var(--ease);
}
.progress-bar[data-active="true"] { width: 78%; opacity: 1; }
.progress-bar[data-active="done"] { width: 100%; opacity: 0; }

.skeleton {
  background: linear-gradient(90deg, var(--bg-sunk) 25%, var(--line-soft) 50%, var(--bg-sunk) 75%);
  background-size: 200% 100%;
  border-radius: var(--r-sm);
  animation: shimmer 1.3s linear infinite;
  height: 0.85em;
}
.skeleton + .skeleton { margin-top: 0.75rem; }
.skeleton--short { width: 40%; }
@keyframes shimmer { to { background-position: -200% 0; } }

/* --- Utilities ----------------------------------------------------------- */

.visually-hidden {
  position: absolute !important;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}
.text-dim { color: var(--text-dim); }
.text-faint { color: var(--text-faint); }
.mono { font-family: var(--font-mono); }
.mt-0 { margin-top: 0; }
.mb-0 { margin-bottom: 0; }
.center { text-align: center; margin-inline: auto; }
.flow-actions { display: flex; flex-wrap: wrap; gap: 0.75rem; align-items: center; }

.cta-band {
  position: relative;
  isolation: isolate;
  overflow: hidden;
  padding: clamp(2.5rem, 1.5rem + 4vw, 4rem);
  border: 1px solid var(--line);
  border-radius: var(--r-lg);
  background: var(--bg-elev);
}
.cta-band::before {
  content: "";
  position: absolute;
  inset: auto -10% -70% -10%;
  height: 130%;
  z-index: -1;
  background:
    radial-gradient(50% 60% at 30% 100%, color-mix(in oklab, var(--coral-500) 22%, transparent), transparent 70%),
    radial-gradient(50% 60% at 78% 100%, color-mix(in oklab, var(--violet-500) 22%, transparent), transparent 70%);
}

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

@media print {
  .site-header, .site-footer, .hero__sky, .hero__grid, .btn { display: none !important; }
  body { background: #fff; color: #000; }
}