/* ============================================================
   Zensical — calm documentation theme
   Branded with the TAV "Stone + Slate" production palette
   (slate #3A4456 / steel #4A5568 / beige #E2E0DA / gray #707072).
   Brand crimson #AA1A2D appears only in the logo artwork.
   ============================================================ */

:root {
  /* ---- Palette (TAV "Stone + Slate" production) ---- */
  --zen-bg:        #f0efec;   /* stone 50 — warm paper            */
  --zen-surface:   #ffffff;   /* cards / panels                   */
  --zen-ink:       #1a1a1a;   /* body text — ink                  */
  --zen-muted:     #707072;   /* secondary text — TAV gray        */
  --zen-faint:     #8c8c8d;   /* captions / hints — gray 400      */
  --zen-border:    #e2e0da;   /* stone 100 — soft dividers        */
  --zen-primary:   #3a4456;   /* slate 500 — headings / actions   */
  --zen-primary-d: #24262b;   /* slate 900 — hover                */
  --zen-primary-l: #eef0f3;   /* slate 50 — tint                  */
  --zen-accent:    #4a5568;   /* slate 400 — steel accent         */
  --zen-accent-l:  #e2e0da;   /* stone 100 — beige tint           */
  --zen-teal:      #4a5568;   /* alias → steel                    */
  --zen-teal-l:    #eef0f3;   /* alias → slate 50                 */
  --zen-danger:    #b3261e;   /* functional error                 */
  --zen-danger-l:  #fbf0f1;   /* crimson 50 — alert tint          */

  /* ---- Fonts (brand: DM Sans display + Roboto body) ---- */
  --font-head: "DM Sans", "Avenir Next", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-body: "Roboto", "Segoe UI", system-ui, -apple-system, sans-serif;
  --font-mono: "SF Mono", "JetBrains Mono", Menlo, Consolas, monospace;

  /* ---- Rhythm ---- */
  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4rem;

  --radius-s: 10px;
  --radius-m: 16px;
  --radius-l: 24px;

  --shadow-sm: 0 1px 2px rgba(43, 43, 38, 0.05);
  --shadow-md: 0 6px 24px rgba(43, 43, 38, 0.07);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  background: var(--zen-bg);
  color: var(--zen-ink);
  font-family: var(--font-body);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

h1, h2, h3, h4 {
  font-family: var(--font-head);
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin: 0 0 var(--space-2);
  color: var(--zen-ink);
}

h1 { font-size: clamp(2.2rem, 5vw, 3.4rem); }
h2 { font-size: clamp(1.6rem, 3vw, 2.1rem); margin-bottom: var(--space-1); }
h3 { font-size: 1.25rem; }

p { margin: 0 0 var(--space-2); color: var(--zen-ink); }

a {
  color: var(--zen-primary-d);
  text-decoration: none;
  border-bottom: 1px solid rgba(58, 68, 86, 0.3);
  transition: color .15s ease, border-color .15s ease;
}
a:hover { color: var(--zen-primary); border-color: var(--zen-primary); }

strong { font-weight: 600; }

/* ---------- Layout ---------- */
.wrap {
  max-width: 860px;
  margin: 0 auto;
  padding: 0 var(--space-3);
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(246, 244, 238, 0.88);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--zen-border);
}

.site-header .wrap {
  display: flex;
  align-items: center;
  justify-content: flex-start;
  gap: var(--space-3);
  padding-top: var(--space-2);
  padding-bottom: var(--space-2);
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-family: var(--font-head);
  font-weight: 600;
  font-size: 1.2rem;
  color: var(--zen-ink);
  text-decoration: none;
  border-bottom: none;
}

.brand-logo { height: 30px; width: auto; }

.site-nav { display: flex; gap: 0.8rem; flex-wrap: wrap; }
.site-nav a {
  font-size: 0.84rem;
  color: var(--zen-muted);
  border-bottom: none;
}
.site-nav a:hover { color: var(--zen-primary-d); }
.site-nav a.active {
  color: var(--zen-primary-d);
  font-weight: 600;
  border-bottom: 2px solid var(--zen-primary);
}

/* Language switch (EN / TR slider) */
.lang-switch {
  margin-left: auto;
  display: inline-flex;
  align-items: center;
  gap: 2px;
  background: var(--zen-surface);
  border: 1.5px solid var(--zen-border);
  border-radius: 999px;
  padding: 3px;
}
.lang-switch .lang-opt {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 2.1rem;
  padding: 0.32rem 0.7rem;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  line-height: 1;
  color: var(--zen-muted);
  text-decoration: none;
  border-bottom: none;
  transition: background .15s ease, color .15s ease;
}
.lang-switch .lang-opt:hover { color: var(--zen-primary-d); }
.lang-switch .lang-opt.active {
  background: var(--zen-primary);
  color: #fff;
  cursor: default;
}
.lang-switch .lang-opt.active:hover { color: #fff; }

/* Mobile menu toggle */
.nav-toggle {
  display: none;
  background: none;
  border: 1.5px solid var(--zen-border);
  border-radius: var(--radius-s);
  color: var(--zen-ink);
  font-size: 1.2rem;
  line-height: 1;
  padding: 0.4rem 0.7rem;
  cursor: pointer;
}

@media (max-width: 760px) {
  .site-header .wrap { position: relative; flex-wrap: wrap; }
  .nav-toggle { display: inline-flex; align-items: center; justify-content: center; }
  .site-nav {
    display: none;
    position: absolute;
    top: calc(100% + 0.5rem);
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--zen-surface);
    border: 1px solid var(--zen-border);
    border-radius: var(--radius-m);
    box-shadow: var(--shadow-md);
    padding: 0.5rem 0;
    z-index: 60;
  }
  .site-nav.open { display: flex; }
  .site-nav a { padding: 0.6rem 1.25rem; border-bottom: 1px solid var(--zen-border); }
  .site-nav a:last-child { border-bottom: none; }
  .site-nav a.active { border-bottom: 1px solid var(--zen-border); background: var(--zen-primary-l); }
}

/* ---------- Hero ---------- */
.hero {
  padding: var(--space-6) 0 var(--space-5);
  text-align: center;
}

.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--zen-primary);
  background: var(--zen-primary-l);
  border-radius: 999px;
  padding: 0.35rem 1rem;
  margin-bottom: var(--space-3);
}

.hero h1 { margin-bottom: var(--space-2); }
.hero .lede {
  max-width: 620px;
  margin: 0 auto var(--space-3);
  color: var(--zen-muted);
  font-size: 1.15rem;
}

/* ---------- Before-you-begin checklist ---------- */
.checklist {
  display: grid;
  gap: 0.75rem;
  margin: var(--space-3) 0 0;
  padding: 0;
  list-style: none;
}
.checklist li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-s);
  padding: 0.8rem 1rem;
  box-shadow: var(--shadow-sm);
}
.checklist li::before {
  content: "✓";
  color: var(--zen-primary);
  font-weight: 700;
  line-height: 1.5;
}

/* ---------- Sections / cards ---------- */
.section { padding: var(--space-2) 0; }
.section + .section { border-top: 1px solid var(--zen-border); }

.card {
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-m);
  padding: var(--space-4);
  box-shadow: var(--shadow-sm);
}

.step {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-3);
  align-items: start;
}
@media (min-width: 720px) {
  .step { grid-template-columns: 280px 1fr; gap: var(--space-4); }
}

.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 42px; height: 42px;
  border-radius: 50%;
  background: var(--zen-primary);
  color: #fff;
  font-weight: 700;
  font-size: 1.15rem;
  margin-bottom: var(--space-2);
}

.step-visual {
  background: var(--zen-bg);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-m);
  padding: var(--space-3);
  display: flex;
  align-items: center;
  justify-content: center;
}

/* ---------- Callouts ---------- */
.callout {
  border-radius: var(--radius-s);
  padding: 1rem 1.25rem;
  margin: var(--space-3) 0;
  border: 1px solid transparent;
  font-size: 0.98rem;
}
.callout.note  { background: var(--zen-teal-l);  border-color: #c9c9c9; } /* slate 50 / gray 200 */
.callout.tip   { background: #e2e0da;            border-color: #d6cebc; } /* stone beige         */
.callout.warn  { background: #fbf0f1;            border-color: #e7adb5; } /* crimson-50 alert    */
.callout h4 { margin: 0 0 0.35rem; font-size: 1rem; }
.callout p { margin: 0; color: var(--zen-ink); }

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--zen-primary);
  color: #fff;
  border: none;
  border-radius: 999px;
  padding: 0.7rem 1.4rem;
  font-size: 0.95rem;
  font-weight: 600;
  font-family: var(--font-body);
  cursor: pointer;
  transition: background .15s ease, transform .1s ease;
}
.btn:hover { background: var(--zen-primary-d); }
.btn:active { transform: translateY(1px); }
.btn.ghost {
  background: transparent;
  color: var(--zen-primary-d);
  border: 1.5px solid var(--zen-primary);
}
.btn.ghost:hover { background: var(--zen-primary-l); }

/* ---------- Code chip (for the 6-digit code) ---------- */
.code-chip {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  letter-spacing: 0.28em;
  font-weight: 700;
  color: var(--zen-ink);
  background: var(--zen-bg);
  border: 1.5px dashed var(--zen-primary);
  border-radius: var(--radius-s);
  padding: 0.6rem 0.9rem 0.6rem 1.2rem;
  display: inline-block;
  margin: var(--space-2) 0;
}

/* ---------- Steps progress (interactive) ---------- */
.progress-track {
  display: flex;
  gap: 0.4rem;
  margin: var(--space-3) 0;
}
.progress-seg {
  flex: 1;
  height: 6px;
  border-radius: 999px;
  background: var(--zen-border);
  transition: background .3s ease;
}
.progress-seg.done { background: var(--zen-primary); }

.step-toggle {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: none;
  border: 1.5px solid var(--zen-border);
  border-radius: 999px;
  padding: 0.4rem 1rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--zen-muted);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all .15s ease;
  margin-top: var(--space-2);
}
.step-toggle.done {
  background: var(--zen-primary-l);
  border-color: var(--zen-primary);
  color: var(--zen-primary-d);
}
.step-toggle .tick { opacity: 0; transition: opacity .15s ease; }
.step-toggle.done .tick { opacity: 1; }

/* ---------- FAQ / accordion ---------- */
details {
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-s);
  padding: 1rem 1.25rem;
  margin-bottom: 0.75rem;
  box-shadow: var(--shadow-sm);
}
details summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--zen-ink);
  list-style: none;
  position: relative;
  padding-right: 1.5rem;
}
details summary::-webkit-details-marker { display: none; }
details summary::after {
  content: "+";
  position: absolute;
  right: 0;
  top: -2px;
  font-size: 1.4rem;
  color: var(--zen-primary);
  transition: transform .2s ease;
}
details[open] summary::after { transform: rotate(45deg); }
details .answer { padding-top: 0.6rem; color: var(--zen-muted); }

/* ---------- App store badges ---------- */
.store-row { display: flex; gap: var(--space-2); flex-wrap: wrap; margin-bottom: var(--space-4); }
.store-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  border: 1.5px solid var(--zen-ink);
  color: var(--zen-ink);
  border-radius: 12px;
  padding: 0.55rem 1rem;
  font-weight: 600;
  font-size: 0.9rem;
  line-height: 1.2;
  border-bottom: 1.5px solid var(--zen-ink);
}
.store-badge:hover { background: var(--zen-ink); color: #fff; border-color: var(--zen-ink); }
.store-badge svg { width: 22px; height: 22px; }

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--zen-border);
  margin-top: var(--space-6);
  padding: var(--space-5) 0 var(--space-4);
  color: var(--zen-muted);
  font-size: 0.92rem;
  background: var(--zen-bg);
}
.footer-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-4);
  text-align: left;
}
@media (max-width: 640px) {
  .footer-grid { grid-template-columns: 1fr; }
}
.footer-name {
  font-family: var(--font-head);
  font-weight: 700;
  color: var(--zen-primary);
  font-size: 1.05rem;
  margin: 0 0 0.3rem;
}
.footer-grid h4 {
  font-size: 0.95rem;
  margin: 0 0 0.4rem;
  color: var(--zen-ink);
}
.footer-grid p { color: var(--zen-muted); margin: 0 0 0.4rem; }
.site-footer a { color: var(--zen-muted); }
.site-footer a:hover { color: var(--zen-primary-d); }
.footer-bottom {
  border-top: 1px solid var(--zen-border);
  margin-top: var(--space-4);
  padding-top: var(--space-3);
  font-size: 0.85rem;
  color: var(--zen-faint);
}

/* ---------- Reveal animation (subtle, zen) ---------- */
.reveal { opacity: 0; transform: translateY(12px); transition: opacity .5s ease, transform .5s ease; }
.reveal.in { opacity: 1; transform: none; }

/* ---------- Breadcrumb ---------- */
.breadcrumb {
  font-size: 0.9rem;
  color: var(--zen-faint);
  margin: var(--space-3) 0;
}
.breadcrumb a { color: var(--zen-muted); border-bottom: none; }
.breadcrumb a:hover { color: var(--zen-primary-d); }
.breadcrumb .sep { color: var(--zen-faint); margin: 0 0.35rem; }

/* ---------- Compact hero (for sub-pages) ---------- */
.hero.compact { padding: var(--space-2) 0 var(--space-1); }
.hero.compact h1 { font-size: clamp(1.8rem, 4vw, 2.6rem); }

/* ---------- Topic grid (help-center home) ---------- */
.topic-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: var(--space-3);
}

.topic-card {
  display: flex;
  flex-direction: column;
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-m);
  padding: var(--space-3);
  box-shadow: var(--shadow-sm);
  color: var(--zen-ink);
  text-decoration: none;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease;
}
.topic-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--zen-primary);
}
.topic-card .icon {
  width: 46px; height: 46px;
  border-radius: 12px;
  background: var(--zen-primary-l);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.45rem;
  margin-bottom: var(--space-2);
}
.topic-card h3 { margin-bottom: 0.4rem; font-size: 1.2rem; }
.topic-card p { color: var(--zen-muted); margin: 0 0 var(--space-2); font-size: 0.95rem; }
.topic-card .card-arrow { color: var(--zen-primary-d); font-weight: 600; font-size: 0.9rem; }
.topic-card .card-main {
  display: flex;
  flex-direction: column;
  flex: 1;
  text-decoration: none;
  color: inherit;
  border-bottom: none;
}
.topic-card .card-main:hover { color: inherit; }
.topic-card .card-video {
  margin-top: var(--space-2);
  align-self: flex-start;
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--zen-primary-d);
  border-bottom: none;
}
.topic-card .card-video:hover { color: var(--zen-primary); }
.topic-card .card-links {
  margin-top: var(--space-2);
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem var(--space-3);
  align-items: center;
}
.topic-card .card-links .card-video { margin-top: 0; }

.topic-card.pending { cursor: default; }
.topic-card.pending:hover {
  transform: none;
  box-shadow: var(--shadow-sm);
  border-color: var(--zen-border);
}
.topic-card.pending .icon { background: var(--zen-accent-l); }

.badge {
  display: inline-block;
  align-self: flex-start;
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--zen-muted);
  background: var(--zen-accent-l);
  border-radius: 999px;
  padding: 0.25rem 0.7rem;
}

/* ---------- Placeholder (coming-soon) card ---------- */
.placeholder {
  text-align: center;
  padding: var(--space-6) var(--space-4);
}
.placeholder .icon {
  width: 64px; height: 64px;
  border-radius: 16px;
  background: var(--zen-primary-l);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.9rem;
  margin: 0 auto var(--space-3);
}

/* ---------- Foldable folder tree ---------- */
.tree, .tree ul { list-style: none; margin: 0; padding: 0; }
.tree ul { padding-left: 1.4rem; border-left: 1px dashed var(--zen-border); margin-left: 0.6rem; }
.tree li { margin: 0.12rem 0; color: var(--zen-ink); font-size: 0.95rem; }
.tree summary {
  cursor: pointer;
  font-weight: 600;
  color: var(--zen-primary-d);
  list-style: none;
  padding: 0.15rem 0;
}
.tree summary::-webkit-details-marker { display: none; }
.tree summary::before {
  content: "▸";
  display: inline-block;
  width: 1em;
  color: var(--zen-primary);
  transition: transform .15s ease;
}
.tree details[open] > summary::before { content: "▾"; }
.tree .owner {
  font-weight: 400;
  color: var(--zen-faint);
  font-size: 0.82em;
  margin-left: 0.4rem;
}

/* ---------- Image gallery (logos / previews) ---------- */
.gallery {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(200px, 1fr));
  gap: var(--space-3);
}
.gallery figure {
  margin: 0;
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-s);
  padding: var(--space-2);
  box-shadow: var(--shadow-sm);
  text-align: center;
}
.gallery figure img {
  width: 100%;
  height: 150px;
  object-fit: contain;
  background: #fff;
  border-radius: 6px;
  cursor: zoom-in;
}
.gallery.large figure img { height: 260px; }
.gallery.logos { grid-template-columns: repeat(2, 1fr); }

/* Standalone screenshot figure */
.shot { margin: var(--space-2) 0 var(--space-3); }
.shot img {
  width: 100%;
  max-width: 480px;
  height: auto;
  border: 1px solid var(--zen-border);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  cursor: zoom-in;
  background: #fff;
}
.shot figcaption { margin-top: 0.4rem; font-size: 0.82rem; color: var(--zen-muted); }
.gallery figcaption {
  margin-top: 0.5rem;
  font-size: 0.8rem;
  color: var(--zen-muted);
}

/* ---------- Step-by-step guide cards with screenshots ---------- */
.step-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.6rem;
}
.step-head .step-num { margin-bottom: 0; flex: 0 0 auto; }
.step-head h3 { margin: 0; }

.step-shot { margin: var(--space-3) 0 var(--space-2); }
.step-shot img {
  width: 100%;
  height: auto;
  border: 1px solid var(--zen-border);
  border-radius: 10px;
  box-shadow: var(--shadow-sm);
  cursor: zoom-in;
  background: #fff;
}
.step-shot figcaption {
  margin-top: 0.45rem;
  font-size: 0.82rem;
  color: var(--zen-muted);
}

/* ---------- Small labelled buttons / chips ---------- */
.chip {
  display: inline-block;
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--zen-primary-d);
  background: var(--zen-primary-l);
  border-radius: 999px;
  padding: 0.2rem 0.7rem;
  margin-right: 0.4rem;
}

/* ---------- On-this-page TOC ---------- */
.toc {
  background: var(--zen-surface);
  border: 1px solid var(--zen-border);
  border-radius: var(--radius-m);
  padding: 0.6rem 0.9rem;
  box-shadow: var(--shadow-sm);
  font-size: 0.85rem;
}
.toc h4 {
  margin: 0 0 0.4rem;
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--zen-muted);
}
.toc ol {
  margin: 0;
  padding: 0;
  list-style: none;
}
.toc li { margin: 0.15rem 0; }
.toc li::before { content: "▸ "; color: var(--zen-faint); }
.toc a { color: var(--zen-muted); border-bottom: none; }
.toc a:hover { color: var(--zen-primary-d); }

/* ---------- Lightbox ---------- */
.lightbox {
  position: fixed;
  inset: 0;
  background: rgba(26, 26, 26, 0.85);
  display: none;
  align-items: center;
  justify-content: center;
  z-index: 200;
  padding: 2rem;
  cursor: zoom-out;
}
.lightbox.open { display: flex; }
.lightbox .lb-inner { text-align: center; }
.lightbox img {
  max-width: 92vw;
  max-height: 84vh;
  border-radius: 10px;
  box-shadow: var(--shadow-md);
}
.lightbox .caption {
  color: #fff;
  margin-top: 0.75rem;
  font-size: 0.9rem;
}

/* ---------- Prompt quote ---------- */
.prompt {
  background: var(--zen-bg);
  border-left: 3px solid var(--zen-primary);
  border-radius: 0 6px 6px 0;
  padding: 0.55rem 0.9rem;
  margin: 0.4rem 0 0.8rem;
  font-size: 0.92rem;
  color: var(--zen-ink);
}

/* ---------- Print ---------- */
@media print {
  .site-header, .site-nav, .store-row, .btn, .step-toggle, .progress-track { display: none; }
  body { background: #fff; font-size: 12pt; }
}