/* ======================================================================
   Sessiz Net — visual identity v3
   Restrained, left-aligned, no animation. Iznik palette retained.
   ====================================================================== */

:root {
  /* Type. One distinctive display + system body + mono for technical labels. */
  --f-display: "Bricolage Grotesque", "Helvetica Neue", "Inter", system-ui, sans-serif;
  --f-body:    -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --f-mono:    "JetBrains Mono", ui-monospace, "SF Mono", Menlo, monospace;

  /* Type scale, perfect fourth (1.333). Five steps, no more. */
  --t-2xs: .6875rem;
  --t-xs:  .8125rem;
  --t-sm:  .9375rem;
  --t-md:  1.0625rem;
  --t-lg:  1.375rem;
  --t-xl:  1.875rem;
  --t-2xl: 2.5rem;
  --t-hero: clamp(2.75rem, 7vw, 6rem);

  /* Spacing. Multiples of the body line-height (1.55rem ≈ 25px). */
  --s-1: .5rem;
  --s-2: 1rem;
  --s-3: 1.75rem;
  --s-4: 3rem;
  --s-5: 5rem;

  --tx: 200ms cubic-bezier(.2,.7,.2,1);
}

/* ============================ Iznik palette ============================ */

:root,
[data-theme="light"] {
  --c-bg:         oklch(96.5% .010 75);
  --c-bg-2:       oklch(93%   .014 75);
  --c-rule:       oklch(83%   .025 250);
  --c-rule-soft:  oklch(89%   .020 250);

  --c-ink:        oklch(20%   .090 250);
  --c-ink-mid:    oklch(40%   .070 250);
  --c-ink-soft:   oklch(56%   .045 250);

  --c-accent:     oklch(56%   .22  30);
  --c-accent-2:   oklch(62%   .22  30);
}

[data-theme="dark"] {
  --c-bg:         oklch(15%   .055 250);
  --c-bg-2:       oklch(19%   .065 250);
  --c-rule:       oklch(28%   .060 250);
  --c-rule-soft:  oklch(22%   .055 250);

  --c-ink:        oklch(95%   .015 80);
  --c-ink-mid:    oklch(72%   .035 80);
  --c-ink-soft:   oklch(54%   .030 80);

  --c-accent:     oklch(72%   .22  30);
  --c-accent-2:   oklch(78%   .20  30);
}

@media (prefers-color-scheme: dark) {
  :root:not([data-theme="light"]) {
    --c-bg:         oklch(15%   .055 250);
    --c-bg-2:       oklch(19%   .065 250);
    --c-rule:       oklch(28%   .060 250);
    --c-rule-soft:  oklch(22%   .055 250);
    --c-ink:        oklch(95%   .015 80);
    --c-ink-mid:    oklch(72%   .035 80);
    --c-ink-soft:   oklch(54%   .030 80);
    --c-accent:     oklch(72%   .22  30);
    --c-accent-2:   oklch(78%   .20  30);
  }
}

/* =============================== reset ================================= */

*, *::before, *::after { box-sizing: border-box; }
html { -webkit-text-size-adjust: 100%; text-size-adjust: 100%; }

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-ink);
  font: 400 var(--t-md)/1.55 var(--f-body);
  font-feature-settings: "kern", "calt", "ss01";
  letter-spacing: -.005em;
  min-height: 100svh;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background var(--tx), color var(--tx);
}

a { color: inherit; text-decoration: none; }
button { font: inherit; color: inherit; background: none; border: 0; cursor: pointer; padding: 0; }

::selection { background: var(--c-accent); color: var(--c-bg); }

/* ============================== layout ================================= */

.page {
  max-width: 880px;
  margin-inline: auto;
  padding: var(--s-3) var(--s-3);
}
@media (min-width: 720px)  { .page { padding: var(--s-4) var(--s-4); } }
@media (min-width: 1024px) { .page { padding: var(--s-4) var(--s-5); } }

.page--landing {
  min-height: 100svh;
  display: flex;
  flex-direction: column;
}

.page--prose { max-width: 720px; }

/* ============================== header ================================= */

header.lead {
  display: flex; align-items: baseline; justify-content: space-between;
  gap: var(--s-3);
  padding-bottom: var(--s-3);
}

.brand-mark {
  display: inline-flex; align-items: baseline; gap: .04em;
  font-family: var(--f-display);
  font-size: var(--t-md);
  font-weight: 700;
  letter-spacing: -.015em;
  line-height: 1;
  color: var(--c-ink);
}
.brand-mark .glyph { color: var(--c-accent); }

.tools { display: inline-flex; align-items: center; gap: var(--s-1); }
.tool {
  width: 32px; height: 32px;
  display: inline-grid; place-items: center;
  color: var(--c-ink-mid);
  border-radius: 999px;
  transition: color var(--tx), background var(--tx);
}
.tool:hover { color: var(--c-accent); background: var(--c-rule-soft); }
.tool svg { width: 15px; height: 15px; }

/* =========================== landing hero ============================== */

main.hero {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: var(--s-5);
  text-align: left;
}

.brand-display {
  margin: 0 0 var(--s-2);
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-hero);
  line-height: 1;
  letter-spacing: -.04em;
  color: var(--c-ink);
}
.brand-display .dot { color: var(--c-accent); }

.tagline {
  margin: 0 0 var(--s-4);
  font: 500 var(--t-xs)/1.4 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--c-ink-mid);
}

.contact {
  display: inline-flex; align-items: baseline; gap: .55ch;
  font: 500 var(--t-sm)/1 var(--f-mono);
  letter-spacing: .04em;
  color: var(--c-ink);
  border-bottom: 1px solid var(--c-rule);
  padding: 0 0 .35em;
  transition: color var(--tx), border-color var(--tx);
}
.contact:hover {
  color: var(--c-accent);
  border-bottom-color: var(--c-accent);
}
.contact .arrow { color: var(--c-ink-soft); transition: color var(--tx); }
.contact:hover .arrow { color: var(--c-accent); }

/* ============================== prose ================================== */

article.prose { max-width: 65ch; }

article.prose .eyebrow {
  font: 500 var(--t-2xs)/1 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--c-ink-soft);
  margin: var(--s-4) 0 var(--s-2);
}
article.prose h1 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-2xl);
  line-height: 1.05;
  letter-spacing: -.03em;
  margin: 0 0 var(--s-1);
  color: var(--c-ink);
}
article.prose h1 .dot { color: var(--c-accent); }
article.prose .updated {
  color: var(--c-ink-soft);
  font: 500 var(--t-2xs)/1.4 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  margin: 0 0 var(--s-3);
}
article.prose .lede {
  font-size: var(--t-lg);
  line-height: 1.45;
  color: var(--c-ink-mid);
  margin: 0 0 var(--s-3);
  max-width: 56ch;
  font-weight: 400;
}
article.prose h2 {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xl);
  line-height: 1.15;
  letter-spacing: -.02em;
  margin: var(--s-4) 0 var(--s-1);
  color: var(--c-ink);
}
article.prose h3 {
  font: 600 var(--t-2xs)/1.4 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .18em;
  color: var(--c-ink-mid);
  margin: var(--s-3) 0 var(--s-1);
}
article.prose p { margin: var(--s-2) 0; line-height: 1.65; color: var(--c-ink); }
article.prose ul, article.prose ol { padding-left: 1.4em; margin: var(--s-2) 0; line-height: 1.65; }
article.prose li { margin: .35em 0; }
article.prose li::marker { color: var(--c-ink-soft); }
article.prose strong { font-weight: 600; }
article.prose em { font-style: italic; color: var(--c-ink-mid); }
article.prose a {
  color: var(--c-accent);
  border-bottom: 1px solid var(--c-rule);
  padding-bottom: .04em;
  transition: border-color var(--tx);
}
article.prose a:hover { border-bottom-color: var(--c-accent); }
article.prose code {
  font: 500 .9em/1 var(--f-mono);
  background: var(--c-bg-2);
  padding: .15em .4em;
  border-radius: 2px;
  color: var(--c-ink);
}
article.prose .callout {
  margin: var(--s-3) 0;
  padding: var(--s-2) var(--s-3);
  background: var(--c-bg-2);
  border-left: 2px solid var(--c-accent);
  border-radius: 0 3px 3px 0;
  font-size: var(--t-sm);
  line-height: 1.55;
}

/* =========================== table of contents ========================= */
/* Single column. Simple ordered list with mono numerals. */

nav.toc {
  margin: var(--s-3) 0 var(--s-4);
  padding: var(--s-2) 0;
  border-top: 1px solid var(--c-rule-soft);
  border-bottom: 1px solid var(--c-rule-soft);
}
nav.toc h2 {
  margin: 0 0 var(--s-1);
  font: 500 var(--t-2xs)/1.2 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .22em;
  color: var(--c-ink-soft);
  font-family: var(--f-mono);
  font-weight: 500;
}
nav.toc ol {
  list-style: none; padding: 0; margin: 0;
  counter-reset: toc;
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
@media (min-width: 640px) { nav.toc ol { grid-template-columns: 1fr 1fr; column-gap: var(--s-3); } }
nav.toc li { counter-increment: toc; }
nav.toc a {
  display: flex; align-items: baseline; gap: .8em;
  padding: .35em 0;
  font-size: var(--t-sm);
  color: var(--c-ink-mid);
  transition: color var(--tx);
}
nav.toc a::before {
  content: counter(toc, decimal-leading-zero);
  font: 500 .85em/1 var(--f-mono);
  color: var(--c-ink-soft);
  letter-spacing: .04em;
  min-width: 1.6em;
}
nav.toc a:hover { color: var(--c-accent); }
nav.toc a:hover::before { color: var(--c-accent); }

/* ============================== footer ================================= */

footer.tail {
  margin-top: var(--s-5);
  padding-top: var(--s-2);
  border-top: 1px solid var(--c-rule);
  display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-4);
  justify-content: space-between; align-items: baseline;
  font: 500 var(--t-2xs)/1.5 var(--f-mono);
  text-transform: uppercase;
  letter-spacing: .14em;
  color: var(--c-ink-soft);
}
footer.tail nav { display: flex; flex-wrap: wrap; gap: var(--s-2) var(--s-3); }
footer.tail a {
  color: var(--c-ink-mid);
  border-bottom: 1px solid transparent;
  transition: color var(--tx), border-color var(--tx);
  padding-bottom: 1px;
}
footer.tail a:hover { color: var(--c-accent); border-bottom-color: var(--c-accent); }

/* ============================ launcher (apps) ========================== */

.launcher {
  display: grid;
  grid-template-columns: 2.5em 1fr max-content;
  align-items: baseline;
  column-gap: var(--s-3);
  padding: var(--s-3) 0;
  border-bottom: 1px solid var(--c-rule-soft);
  text-decoration: none;
  color: inherit;
  position: relative;
  transition: color var(--tx);
}
.launcher:first-of-type { border-top: 1px solid var(--c-rule); }
.launcher:hover .name { color: var(--c-accent); }

.launcher .num {
  font: 500 var(--t-2xs)/1 var(--f-mono);
  color: var(--c-ink-soft);
  letter-spacing: .12em;
  align-self: start;
  padding-top: .55em;
}
.launcher .body { display: flex; flex-direction: column; gap: .35em; }
.launcher .name {
  font-family: var(--f-display);
  font-weight: 700;
  font-size: var(--t-xl);
  line-height: 1.1;
  letter-spacing: -.02em;
  color: var(--c-ink);
  transition: color var(--tx);
}
.launcher .desc {
  font-size: var(--t-sm);
  color: var(--c-ink-mid);
  line-height: 1.5;
  max-width: 56ch;
  margin: 0;
}
.launcher .meta {
  align-self: start;
  padding-top: .55em;
  display: flex; flex-direction: column; align-items: flex-end; gap: .35em;
  font: 500 var(--t-2xs)/1 var(--f-mono);
  letter-spacing: .12em;
  text-transform: uppercase;
  color: var(--c-ink-soft);
  text-align: right;
}
.launcher .pill {
  display: inline-flex; align-items: center; gap: .45em;
  color: var(--c-ink-mid);
}
.launcher .pill .led {
  width: .5rem; height: .5rem; border-radius: 50%;
  background: currentColor; opacity: .4;
}
.launcher .pill[data-state="up"]    { color: var(--c-accent); }
.launcher .pill[data-state="up"] .led    { opacity: 1; }
.launcher .pill[data-state="down"]  { color: var(--c-ink-soft); }
.launcher .pill[data-state="check"] .led { opacity: .55; }

.launcher::after {
  content: "";
  position: absolute; inset: 0;
}

/* =============================== a11y ================================== */

:focus-visible {
  outline: 2px solid var(--c-accent);
  outline-offset: 3px;
  border-radius: 2px;
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation: none !important; transition: none !important; }
}