/* ============================================================
   Vidacity — vidacity.app
   Modern, dark, responsive single-page site.
   ============================================================ */

/* ---- Reset / base ---- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; -webkit-text-size-adjust: 100%; }
body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text", "Segoe UI",
               system-ui, "Helvetica Neue", Arial, sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: #e6e6ea;
  background: #0a0a0a;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }
button { font: inherit; cursor: pointer; }

:root {
  --accent: #ff453a;
  --accent-soft: #ff6b62;
  --grad-1: #ff453a;
  --grad-2: #ff8a3d;
  --bg: #0a0a0a;
  --bg-1: #111114;
  --bg-2: #161619;
  --bg-3: #1d1d22;
  --border: rgba(255, 255, 255, 0.08);
  --border-soft: rgba(255, 255, 255, 0.05);
  --text: #e6e6ea;
  --text-dim: #a0a0a8;
  --text-faint: #6b6b75;
  --radius: 14px;
  --radius-lg: 22px;
  --max: 1180px;
  --max-narrow: 820px;
  --shadow-soft: 0 12px 40px -10px rgba(0,0,0,0.5);
  --shadow-strong: 0 25px 60px -15px rgba(0,0,0,0.7);
}

/* ---- Layout helpers ---- */
.container { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }
.container-narrow { max-width: var(--max-narrow); }
.text-center { text-align: center; }

/* ---- Typography ---- */
h1, h2, h3 { letter-spacing: -0.02em; line-height: 1.15; margin: 0 0 0.5em; }
h1 { font-size: clamp(2.2rem, 5vw + 1rem, 4.4rem); font-weight: 800; }
h2 { font-size: clamp(1.7rem, 2.5vw + 1rem, 2.6rem); font-weight: 700; }
h3 { font-size: 1.2rem; font-weight: 700; }
p  { margin: 0 0 1em; color: var(--text-dim); }
strong { color: var(--text); }
code, kbd, pre { font-family: ui-monospace, "SF Mono", Menlo, Consolas, monospace; }
code { background: var(--bg-2); padding: 2px 6px; border-radius: 6px; font-size: 0.9em; color: #f7d6d2; }
kbd { background: var(--bg-2); border: 1px solid var(--border); padding: 1px 6px; border-radius: 4px; font-size: 0.85em; }
pre  { background: var(--bg-2); padding: 16px; border-radius: var(--radius); overflow-x: auto; border: 1px solid var(--border); }
pre code { background: transparent; padding: 0; color: #e6e6ea; }
.grad { background: linear-gradient(135deg, var(--grad-1), var(--grad-2)); -webkit-background-clip: text; background-clip: text; color: transparent; }

.section-title { text-align: center; }
.section-lead { text-align: center; max-width: 720px; margin: 0 auto 56px; color: var(--text-dim); font-size: 1.05rem; }

/* ---- Header / nav ---- */
.site-header {
  position: sticky; top: 0; z-index: 50;
  backdrop-filter: saturate(180%) blur(20px);
  -webkit-backdrop-filter: saturate(180%) blur(20px);
  background: rgba(10, 10, 10, 0.7);
  border-bottom: 1px solid var(--border-soft);
}
.nav {
  display: flex; align-items: center; justify-content: space-between;
  max-width: var(--max); margin: 0 auto;
  padding: 14px 24px;
}
.brand { display: flex; align-items: center; gap: 10px; font-weight: 700; font-size: 1.05rem; }
.brand-icon { filter: drop-shadow(0 0 12px rgba(255, 69, 58, 0.5)); }
.nav-links {
  list-style: none; margin: 0; padding: 0;
  display: flex; align-items: center; gap: 28px;
}
.nav-links a {
  color: var(--text-dim); font-size: 0.95rem; transition: color 0.15s;
}
.nav-links a:hover { color: var(--text); }
.nav-cta {
  background: var(--bg-2); border: 1px solid var(--border);
  padding: 8px 14px; border-radius: 999px; color: var(--text) !important;
}
.nav-cta:hover { background: var(--bg-3); border-color: rgba(255,255,255,0.16); }

/* Mobile burger. Explicit width on the bars + align-items: center on the button
   so the visibility doesn't depend on flex's default stretch behaviour (which some
   browsers / cached states render at 0 width, making the button invisible). */
.nav-toggle {
  display: none;
  background: transparent;
  border: 0;
  padding: 10px;
  width: 44px;            /* Apple's recommended minimum touch target */
  height: 44px;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  position: relative;
  z-index: 51;            /* above the sticky header, above any backdrops */
  color: var(--text);
}
.nav-toggle span {
  display: block;
  width: 22px;            /* explicit, not relying on flex stretch */
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

@media (max-width: 760px) {
  .nav-toggle { display: flex; }
  .nav-links {
    position: absolute; top: 64px; right: 0; left: 0;
    flex-direction: column; align-items: stretch; gap: 0;
    background: rgba(10, 10, 10, 0.96);
    backdrop-filter: blur(20px);
    border-bottom: 1px solid var(--border);
    padding: 8px 24px 16px;
    transform: translateY(-12px); opacity: 0; pointer-events: none;
    transition: transform 0.2s, opacity 0.2s;
  }
  .nav-links.open { transform: translateY(0); opacity: 1; pointer-events: auto; }
  .nav-links li { border-bottom: 1px solid var(--border-soft); }
  /* GitHub CTA: standalone pill, centered, with its own padding instead of the
     "padding: 14px 0" used by the other plain text links. The flex on the <li>
     centers the pill horizontally; the !important on padding overrides the
     plain-link rule on the same selector level. */
  .nav-links li:last-child {
    border-bottom: 0;
    padding-top: 12px;
    display: flex;
    justify-content: center;
  }
  .nav-links a { display: block; padding: 14px 0; font-size: 1rem; }
  .nav-cta {
    display: inline-flex;
    align-items: center;
    padding: 10px 22px !important;
    font-size: 0.95rem;
  }
}

/* ---- Hero ---- */
.hero {
  position: relative;
  padding: 80px 0 120px;
  overflow: hidden;
}
.hero::before {
  content: ""; position: absolute; inset: 0;
  background:
    radial-gradient(circle at 80% 0%, rgba(255, 69, 58, 0.18), transparent 50%),
    radial-gradient(circle at 0% 80%, rgba(255, 138, 61, 0.10), transparent 50%);
  pointer-events: none;
}
.hero-inner {
  position: relative;
  max-width: var(--max); margin: 0 auto; padding: 0 24px;
  display: grid; grid-template-columns: 1.05fr 1fr; gap: 64px;
  align-items: center;
}
.hero-eyebrow {
  display: inline-flex; align-items: center; gap: 8px;
  font-size: 0.85rem; font-weight: 600;
  color: var(--text-dim); margin: 0 0 20px;
  text-transform: uppercase; letter-spacing: 0.05em;
}
.hero-eyebrow .dot {
  width: 8px; height: 8px; border-radius: 50%;
  background: #30d158; box-shadow: 0 0 12px rgba(48, 209, 88, 0.6);
}
.hero-copy h1 { margin-bottom: 24px; }
.hero-list {
  list-style: none;
  margin: 0 0 32px;
  padding: 0;
  max-width: 560px;
  display: grid;
  gap: 10px;
  font-size: 1.08rem;
  color: var(--text-dim);
}
.hero-list li {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  line-height: 1.5;
}
.hero-list li > svg {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  color: var(--accent-soft);
  margin-top: 3px;
}
.hero-list strong { color: var(--text); }
.hero-cta { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 36px; }

/* Mobile: hero CTA pair stacks into one column, two rows, centered horizontally.
   max-width on each button keeps them from going edge-to-edge on slightly wider phones. */
@media (max-width: 760px) {
  .hero-cta {
    flex-direction: column;
    align-items: center;
  }
  .hero-cta .btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }
}
.hero-badges {
  list-style: none; margin: 0; padding: 0;
  display: flex; flex-wrap: wrap; gap: 20px 24px;
  color: var(--text-dim); font-size: 0.95rem;
}
.hero-badges li {
  display: inline-flex; align-items: center; gap: 8px;
}
.hero-badges .sf {
  width: 20px; height: 20px;
  color: var(--accent-soft);
  flex-shrink: 0;
}

.hero-art {
  position: relative;
  height: 580px;
  display: flex; align-items: center; justify-content: center;
}
.hero-phone {
  position: absolute;
  width: 240px; aspect-ratio: 1290/2796;
  border-radius: 38px;
  overflow: hidden;
  border: 2px solid rgba(255,255,255,0.08);
  box-shadow: var(--shadow-strong);
  background: #000;
  transition: transform 0.4s cubic-bezier(0.2, 0.7, 0.2, 1);
}
.hero-phone img { width: 100%; height: 100%; object-fit: cover; }
.hero-phone--front { z-index: 3; transform: translateY(0) rotate(0); }
.hero-phone--back  { z-index: 2; transform: translate(80px, 30px) rotate(8deg); opacity: 0.85; }
.hero-phone--side  { z-index: 1; transform: translate(-80px, 30px) rotate(-8deg); opacity: 0.75; }
.hero-art:hover .hero-phone--front { transform: translateY(-6px); }
.hero-art:hover .hero-phone--back  { transform: translate(110px, 24px) rotate(10deg); }
.hero-art:hover .hero-phone--side  { transform: translate(-110px, 24px) rotate(-10deg); }

@media (max-width: 900px) {
  .hero-inner { grid-template-columns: 1fr; gap: 48px; }
  .hero-art { height: 480px; transform: scale(0.85); }
}
@media (max-width: 500px) {
  .hero { padding: 56px 0 80px; }
  .hero-art { height: 420px; transform: scale(0.75); }
}

/* ---- Buttons ---- */
.btn {
  display: inline-flex; align-items: center; gap: 10px;
  padding: 13px 22px;
  border-radius: 999px;
  font-weight: 600; font-size: 0.98rem;
  border: 1px solid transparent;
  transition: transform 0.15s, background 0.15s, border-color 0.15s, box-shadow 0.15s;
}
.btn-primary {
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  color: #fff;
  box-shadow: 0 8px 24px -8px rgba(255, 69, 58, 0.6);
}
.btn-primary:hover { transform: translateY(-2px); box-shadow: 0 12px 32px -10px rgba(255, 69, 58, 0.7); }
.btn-ghost {
  background: var(--bg-2); border-color: var(--border); color: var(--text);
}
.btn-ghost:hover { background: var(--bg-3); border-color: rgba(255,255,255,0.16); }

/* ---- Sections ---- */
section { padding: 96px 0; }
@media (max-width: 600px) { section { padding: 72px 0; } }
.features      { background: var(--bg-1); }
.screenshots   { background: var(--bg); }
.install       { background: var(--bg-1); }
.how-to        { background: var(--bg); }
.why           { background: var(--bg-1); }
.tech          { background: var(--bg); }
.faq           { background: var(--bg-1); }
.cta           { background: linear-gradient(180deg, var(--bg-1), var(--bg)); }

/* ---- Feature cards ---- */
.grid { display: grid; gap: 20px; }
.grid-3 { grid-template-columns: repeat(3, 1fr); }
@media (max-width: 900px) { .grid-3 { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 600px) { .grid-3 { grid-template-columns: 1fr; } }

.card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 28px;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.card:hover { transform: translateY(-3px); border-color: rgba(255, 255, 255, 0.14); background: var(--bg-3); }
.card-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: inline-flex; align-items: center; justify-content: center;
  margin-bottom: 18px;
  background: linear-gradient(135deg, rgba(255, 69, 58, 0.18), rgba(255, 138, 61, 0.10));
  border: 1px solid rgba(255, 69, 58, 0.25);
  color: var(--accent-soft);
}
.card-icon svg { width: 26px; height: 26px; display: block; }
.card h3    { margin-bottom: 8px; }
.card p     { margin: 0; }

/* ---- Screenshot grid ---- */
/* Screenshots are 1290×2796 (tall portrait phone aspect ~0.461).
   8 shots arranged as 2 rows × 4 cols on desktop, each cell capped so the rendered
   phones stay realistic in size. `justify-content: center` keeps the constrained
   cells centered inside the wider container. */
.shot-grid {
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 230px));
  gap: 36px 24px;
  justify-content: center;
}
@media (max-width: 1080px) {
  .shot-grid { grid-template-columns: repeat(3, minmax(0, 230px)); }
}
@media (max-width: 820px) {
  .shot-grid { grid-template-columns: repeat(2, minmax(0, 240px)); gap: 32px; }
}
@media (max-width: 520px) {
  .shot-grid { grid-template-columns: minmax(0, 260px); gap: 28px; }
}

.shot {
  margin: 0;
  text-align: center;
  transition: transform 0.2s;
}
.shot:hover { transform: translateY(-4px); }
.shot img {
  border-radius: 22px;
  width: 100%;
  height: auto;                  /* CRITICAL: overrides the HTML height="2796" attr */
  display: block;
  aspect-ratio: 1290 / 2796;     /* matches the original screenshot ratio exactly */
  background: #000;
  border: 2px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--shadow-soft);
}
.shot figcaption {
  margin-top: 14px;
  font-size: 0.88rem;
  color: var(--text-dim);
  line-height: 1.4;
}
.shot figcaption strong { color: var(--text); }

/* ---- Install steps ---- */
.steps {
  list-style: none; counter-reset: step;
  margin: 0; padding: 0;
  display: grid; gap: 20px;
  grid-template-columns: repeat(2, 1fr);
}
@media (max-width: 760px) {
  .steps { grid-template-columns: 1fr; gap: 16px; }
}

.step {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 22px 24px 20px;
  /* CRITICAL: grid items have min-width: auto by default, which lets the long git URL
     inside <pre> expand the card past the column width and push the whole page wider.
     min-width: 0 forces the card to respect its column and lets the <pre> scroll. */
  min-width: 0;
}
/* Step number is now inline with the title (was absolutely positioned above the card,
   which on mobile clipped against the next card's content). */
.step h3 {
  display: flex;
  align-items: center;
  gap: 14px;
  margin: 0 0 10px;
  line-height: 1.25;
  /* same min-width: 0 trick so a long title wraps instead of pushing the badge out. */
  min-width: 0;
  flex-wrap: wrap;
}
.step-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  width: 32px; height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--grad-1), var(--grad-2));
  color: #fff; font-weight: 700; font-size: 0.95rem;
  box-shadow: 0 6px 18px -4px rgba(255, 69, 58, 0.6);
}
.step p  { margin: 0; }
.step pre {
  margin-top: 10px;
  margin-bottom: 0;
  font-size: 0.85rem;
  max-width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
}
.step pre code { white-space: pre; }     /* keep the URL on one line; scroll it instead of wrapping mid-token */
.step a    { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; word-break: break-word; }
.step code { word-break: break-word; }   /* inline code tokens (e.g. com.yourname.vidacity) can wrap */

/* Mobile tuning: smaller padding + slightly smaller badge so the title row breathes. */
@media (max-width: 540px) {
  .step { padding: 20px 18px 18px; }
  .step h3 { font-size: 1.05rem; gap: 12px; }
  .step-num { width: 28px; height: 28px; font-size: 0.85rem; }
  .step pre { font-size: 0.78rem; padding: 12px; }
}

.callout {
  margin-top: 40px;
  background: rgba(255, 69, 58, 0.06);
  border: 1px solid rgba(255, 69, 58, 0.25);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  min-width: 0;
}
@media (max-width: 540px) {
  .callout { margin-top: 28px; padding: 20px 18px; }
  .callout ul { padding-left: 18px; }
}
.callout h3 { color: var(--accent-soft); margin-bottom: 12px; }
.callout ul { margin: 0; padding-left: 20px; color: var(--text-dim); }
.callout li { margin-bottom: 6px; }
.callout a { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; }

/* ---- How-to cards ---- */
.how-card {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 26px 26px 22px;
}
.how-card h3 { margin-bottom: 12px; }
.how-card ol { margin: 0; padding-left: 20px; color: var(--text-dim); }
.how-card ol li { margin-bottom: 6px; line-height: 1.5; }
.how-card ol li::marker { color: var(--accent-soft); font-weight: 700; }
.how-card strong { color: var(--text); }
.how-foot { margin-top: 36px; text-align: center; color: var(--text-dim); font-size: 0.95rem; max-width: 880px; margin-left: auto; margin-right: auto; }

/* ---- Comparison table ---- */
.compare-wrap { overflow-x: auto; margin: 0 auto; max-width: 100%; }
.compare {
  width: 100%; min-width: 640px;
  border-collapse: separate;
  border-spacing: 0;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  font-size: 0.95rem;
}
.compare th, .compare td {
  padding: 14px 18px;
  text-align: center;
  border-bottom: 1px solid var(--border-soft);
}
.compare thead th {
  background: var(--bg-3);
  font-weight: 600;
  font-size: 0.92rem;
  letter-spacing: 0.01em;
  color: var(--text);
}
.compare tbody th {
  text-align: left;
  font-weight: 500;
  color: var(--text);
  background: transparent;
}
.compare tbody tr:last-child th,
.compare tbody tr:last-child td { border-bottom: 0; }
.compare th.hi, .compare td.hi {
  background: rgba(255, 69, 58, 0.08);
  color: var(--accent-soft);
  font-weight: 600;
}
.compare thead th.hi { background: rgba(255, 69, 58, 0.18); color: #fff; }
.compare td { color: var(--text-dim); }
.why-foot { margin-top: 28px; text-align: center; color: var(--text-faint); font-size: 0.92rem; }
.why-foot a { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; }

/* ---- Tech grid ---- */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 16px;
}
@media (max-width: 900px) { .tech-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 480px) { .tech-grid { grid-template-columns: 1fr; } }

.tech-card {
  display: block;
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  transition: transform 0.2s, border-color 0.2s, background 0.2s;
}
.tech-card:hover {
  transform: translateY(-3px);
  border-color: rgba(255, 69, 58, 0.4);
  background: var(--bg-3);
}
.tech-card-head {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  margin-bottom: 8px;
}
.tech-card h3 { margin: 0; font-size: 1.05rem; }
.tech-card p  { margin: 0; font-size: 0.92rem; }

/* GitHub star badge — golden star + count, GitHub-style.
   Explicit width/height attrs on the SVG (in markup) prevent browser fallback to the
   24×24 intrinsic viewBox size when CSS resolves late, which was making the star
   appear inflated on desktop while looking fine on mobile. */
.stars {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  font-size: 0.78rem;
  font-weight: 600;
  color: #ffcd3c;
  flex-shrink: 0;
  white-space: nowrap;
  line-height: 1;
}
.stars svg {
  width: 12px;
  height: 12px;
  flex-shrink: 0;
  display: block;
}

.tech-foot { margin-top: 32px; text-align: center; font-size: 0.9rem; color: var(--text-faint); }
.tech-foot a { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; }

/* ---- FAQ ---- */
.faq-list { display: grid; gap: 12px; }
.faq-item {
  background: var(--bg-2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}
.faq-item:hover { border-color: rgba(255, 255, 255, 0.14); }
.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 20px 24px;
  font-weight: 600; font-size: 1.05rem;
  display: flex; align-items: center; justify-content: space-between;
  gap: 16px;
}
.faq-item summary::-webkit-details-marker { display: none; }
.faq-item summary::after {
  content: "+";
  font-size: 1.5rem; font-weight: 400;
  color: var(--text-dim);
  transition: transform 0.2s;
}
.faq-item[open] summary::after { transform: rotate(45deg); color: var(--accent-soft); }
.faq-item p {
  margin: 0; padding: 0 24px 22px;
  color: var(--text-dim);
}
.faq-item a { color: var(--accent-soft); text-decoration: underline; text-underline-offset: 3px; }
.faq-item code { font-size: 0.85em; }

/* ---- Final CTA ---- */
.cta h2 { margin-bottom: 16px; }
.cta p  { font-size: 1.1rem; margin-bottom: 28px; }
.cta-row { display: flex; justify-content: center; flex-wrap: wrap; gap: 12px; }

/* Mobile: final-CTA pair stacks into one column, two rows, centered horizontally. */
@media (max-width: 760px) {
  .cta-row {
    flex-direction: column;
    align-items: center;
  }
  .cta-row .btn {
    width: 100%;
    max-width: 320px;
    justify-content: center;
  }
}

/* ---- Footer ---- */
.site-footer {
  border-top: 1px solid var(--border-soft);
  padding: 48px 0 40px;
  background: var(--bg);
}
.footer-inner { display: grid; gap: 20px; }
.footer-brand {
  display: flex; align-items: center; gap: 8px;
  font-weight: 700; color: var(--text);
}
.footer-links { display: flex; flex-wrap: wrap; gap: 20px; }
.footer-links a { color: var(--text-dim); font-size: 0.92rem; transition: color 0.15s; }
.footer-links a:hover { color: var(--text); }
.footer-fine { margin: 0; font-size: 0.85rem; color: var(--text-faint); max-width: 780px; }
.footer-contact {
  margin: 0;
  font-size: 0.92rem;
  color: var(--text-dim);
}
.footer-contact a {
  color: var(--accent-soft);
  text-decoration: underline;
  text-underline-offset: 3px;
  margin-left: 4px;
}
.footer-contact a:hover { color: var(--accent); }

/* ---- Motion reduction ---- */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { animation-duration: 0.01ms !important; transition-duration: 0.01ms !important; }
  html { scroll-behavior: auto; }
}