/* ============================================================
   Shared site styles — used by every page.
   App-specific overrides live near the bottom (e.g. ".app-blitz",
   ".app-depths-family"); future apps add their own ".app-foo" block.
   ============================================================ */

/* ---------- Design tokens ---------- */
:root {
  --bg: #000;
  --surface: #111;
  --surface-2: #1a1a1a;
  --border: #262626;

  --text: #fff;
  --text-muted: #a8a8a8;
  --text-dim: #6f6f6f;

  --accent: #ffd60a;
  --accent-hover: #ffe14a;
  --accent-ink: #000;

  --radius: 14px;
  --radius-sm: 8px;
  --max-width: 1100px;

  --space-1: 0.5rem;
  --space-2: 1rem;
  --space-3: 1.5rem;
  --space-4: 2rem;
  --space-5: 3rem;
  --space-6: 4.5rem;

  --shadow-glow: 0 0 0 1px rgba(255, 214, 10, 0.25),
                 0 8px 30px rgba(255, 214, 10, 0.12);
}

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

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Text",
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-size: 17px;
  line-height: 1.6;
  color: var(--text);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

a {
  color: var(--accent);
  text-decoration: none;
  transition: color 0.15s ease;
}
a:hover { color: var(--accent-hover); }

h1, h2, h3, h4 {
  font-family: -apple-system, BlinkMacSystemFont, "SF Pro Display",
               "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
  font-weight: 800;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin: 0 0 var(--space-2);
}

h1 { font-size: clamp(2.4rem, 5.5vw, 4rem); }
h2 { font-size: clamp(1.7rem, 3.2vw, 2.4rem); }
h3 { font-size: 1.2rem; }

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

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
}

.muted { color: var(--text-muted); }
.text-center { text-align: center; }

/* ---------- Header / Nav ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(0, 0, 0, 0.85);
  backdrop-filter: saturate(180%) blur(16px);
  -webkit-backdrop-filter: saturate(180%) blur(16px);
  border-bottom: 1px solid var(--border);
}

.site-header__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0.85rem var(--space-3);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-3);
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--text);
  font-weight: 800;
  letter-spacing: -0.01em;
  font-size: 1.05rem;
}
.brand:hover { color: var(--text); }

.brand__mark {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-weight: 900;
  font-size: 1rem;
}

.brand__icon {
  width: 28px;
  height: 28px;
  border-radius: 7px;
  display: block;
  box-shadow: 0 0 0 1px rgba(255, 214, 10, 0.18);
}

.site-nav { display: flex; align-items: center; gap: var(--space-3); }
.site-nav a {
  color: var(--text-muted);
  font-weight: 500;
  font-size: 0.95rem;
}
.site-nav a:hover,
.site-nav a[aria-current="page"] { color: var(--text); }

.nav-toggle {
  display: none;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text);
  width: 40px;
  height: 36px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  padding: 0;
}
.nav-toggle span,
.nav-toggle span::before,
.nav-toggle span::after {
  content: "";
  display: block;
  width: 18px;
  height: 2px;
  background: currentColor;
  margin: 0 auto;
  position: relative;
  transition: transform 0.2s ease, top 0.2s ease;
}
.nav-toggle span::before { position: absolute; top: -6px; }
.nav-toggle span::after  { position: absolute; top:  6px; }

@media (max-width: 720px) {
  .nav-toggle { display: inline-grid; place-items: center; }
  .site-nav {
    display: none;
    position: absolute;
    top: 100%;
    right: var(--space-3);
    left: var(--space-3);
    background: var(--surface);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    padding: var(--space-2);
    flex-direction: column;
    align-items: stretch;
    gap: 0;
  }
  .site-nav.is-open { display: flex; }
  .site-nav a {
    padding: 0.7rem var(--space-1);
    border-radius: var(--radius-sm);
  }
  .site-nav a:hover { background: var(--surface-2); }
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.4rem;
  border-radius: 999px;
  font-weight: 700;
  font-size: 1rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.1s ease, background 0.15s ease,
              color 0.15s ease, border-color 0.15s ease;
}
.btn:active { transform: translateY(1px); }
.btn--primary {
  background: var(--accent);
  color: var(--accent-ink);
}
.btn--primary:hover { background: var(--accent-hover); color: var(--accent-ink); }
.btn--ghost {
  background: transparent;
  color: var(--text);
  border-color: var(--border);
}
.btn--ghost:hover { border-color: var(--accent); color: var(--accent); }

/* App Store badge placeholder */
.appstore-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.7rem;
  padding: 0.7rem 1.2rem;
  background: var(--text);
  color: var(--bg);
  border-radius: 12px;
  font-weight: 700;
  border: 1px solid var(--text);
}
.appstore-badge:hover { background: var(--accent); border-color: var(--accent); color: var(--accent-ink); }
.appstore-badge__top {
  display: block;
  font-size: 0.7rem;
  font-weight: 500;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  opacity: 0.7;
  line-height: 1;
}
.appstore-badge__bottom {
  display: block;
  font-size: 1.1rem;
  font-weight: 800;
  line-height: 1.1;
}

/* ---------- Sections / page chrome ---------- */
.page-section {
  padding: var(--space-6) 0;
  border-bottom: 1px solid var(--border);
}
.page-section:last-of-type { border-bottom: none; }

.section-eyebrow {
  display: inline-block;
  font-size: 0.78rem;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--accent);
  font-weight: 700;
  margin-bottom: 0.6rem;
}

.section-head {
  text-align: center;
  max-width: 720px;
  margin: 0 auto var(--space-5);
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
  padding: var(--space-6) 0;
  overflow: hidden;
}
.hero::before {
  content: "";
  position: absolute;
  inset: -10% -20% auto -20%;
  height: 70%;
  background: radial-gradient(60% 60% at 50% 0%,
              rgba(255, 214, 10, 0.18), transparent 70%);
  pointer-events: none;
  z-index: 0;
}
.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  gap: var(--space-4);
  grid-template-columns: 1fr;
  align-items: center;
  text-align: center;
}
@media (min-width: 860px) {
  .hero__inner {
    grid-template-columns: 1.1fr 0.9fr;
    text-align: left;
  }
}
.hero__title {
  font-size: clamp(2.6rem, 6vw, 4.2rem);
  line-height: 1.05;
}
.hero__title .accent { color: var(--accent); }
.hero__tagline {
  color: var(--text-muted);
  font-size: clamp(1.05rem, 1.6vw, 1.25rem);
  max-width: 50ch;
  margin-inline: auto;
}
@media (min-width: 860px) {
  .hero__tagline { margin-inline: 0; }
}
.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  justify-content: center;
  margin-top: var(--space-3);
}
@media (min-width: 860px) {
  .hero__ctas { justify-content: flex-start; }
}
.hero__visual {
  display: grid;
  place-items: center;
}

.app-icon {
  width: clamp(140px, 22vw, 220px);
  height: clamp(140px, 22vw, 220px);
  aspect-ratio: 1 / 1;
  border-radius: 26%;
  display: block;
  box-shadow: var(--shadow-glow);
  object-fit: cover;
}

/* App icon placeholder */
.icon-placeholder {
  width: clamp(140px, 22vw, 220px);
  aspect-ratio: 1 / 1;
  border-radius: 26%;
  background: var(--accent);
  color: var(--accent-ink);
  display: grid;
  place-items: center;
  font-weight: 900;
  letter-spacing: 0.02em;
  box-shadow: var(--shadow-glow);
  position: relative;
  overflow: hidden;
}
.icon-placeholder::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(120% 80% at 30% 20%,
      rgba(255, 255, 255, 0.35), transparent 55%);
  pointer-events: none;
}
.icon-placeholder span {
  position: relative;
  font-size: 0.9rem;
  text-transform: uppercase;
  letter-spacing: 0.12em;
}
.icon-placeholder--sm {
  width: 64px;
  border-radius: 18%;
  font-size: 0.65rem;
}
.icon-placeholder--sm span { font-size: 0.65rem; letter-spacing: 0.1em; }

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
}
.feature-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  transition: border-color 0.15s ease, transform 0.15s ease;
}
.feature-card:hover {
  border-color: var(--accent);
  transform: translateY(-2px);
}
.feature-card__icon {
  width: 44px;
  height: 44px;
  border-radius: 10px;
  background: rgba(255, 214, 10, 0.12);
  color: var(--accent);
  display: grid;
  place-items: center;
  font-size: 1.4rem;
  font-weight: 900;
  margin-bottom: var(--space-2);
}
.feature-card h3 { margin-bottom: 0.35rem; }
.feature-card p { color: var(--text-muted); margin: 0; font-size: 0.95rem; }

/* ---------- How it works ---------- */
.steps {
  display: grid;
  gap: var(--space-3);
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  counter-reset: step;
}
.step {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-3);
  position: relative;
}
.step__num {
  display: inline-grid;
  place-items: center;
  width: 36px;
  height: 36px;
  border-radius: 999px;
  background: var(--accent);
  color: var(--accent-ink);
  font-weight: 900;
  margin-bottom: var(--space-2);
}
.step h3 { margin-bottom: 0.35rem; }
.step p { color: var(--text-muted); margin: 0; font-size: 0.95rem; }

/* ---------- Screenshot showcase ---------- */
.screenshots {
  display: flex;
  gap: var(--space-3);
  overflow-x: auto;
  padding: var(--space-2) 0 var(--space-3);
  scroll-snap-type: x mandatory;
  scrollbar-width: thin;
  scrollbar-color: var(--border) transparent;
}
.screenshots::-webkit-scrollbar { height: 8px; }
.screenshots::-webkit-scrollbar-thumb {
  background: var(--border);
  border-radius: 999px;
}
.screenshots img {
  flex: 0 0 auto;
  width: clamp(220px, 32vw, 300px);
  border-radius: var(--radius);
  border: 1px solid var(--border);
  scroll-snap-align: start;
  background: var(--surface);
}

/* ---------- Article / legal pages ---------- */
.article {
  max-width: 760px;
  margin: 0 auto;
}
.article h2 {
  margin-top: var(--space-4);
  font-size: 1.4rem;
}
.article h2:first-of-type { margin-top: 0; }
.article p,
.article li { color: var(--text-muted); }
.article ul { padding-left: 1.25rem; }
.article .last-updated {
  color: var(--text-dim);
  font-size: 0.9rem;
  margin-bottom: var(--space-4);
}

/* ---------- FAQ (support) ---------- */
.faq { max-width: 760px; margin: 0 auto; display: grid; gap: 0.6rem; }
.faq details {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0 var(--space-3);
  transition: border-color 0.15s ease;
}
.faq details[open] { border-color: var(--accent); }
.faq summary {
  list-style: none;
  cursor: pointer;
  padding: var(--space-2) 0;
  font-weight: 700;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-2);
}
.faq summary::-webkit-details-marker { display: none; }
.faq summary::after {
  content: "+";
  color: var(--accent);
  font-size: 1.4rem;
  font-weight: 800;
  line-height: 1;
  transition: transform 0.2s ease;
}
.faq details[open] summary::after { transform: rotate(45deg); }
.faq details > p,
.faq details > div {
  color: var(--text-muted);
  padding-bottom: var(--space-2);
  margin: 0;
}

/* ---------- Contact card ---------- */
.contact-card {
  max-width: 560px;
  margin: 0 auto;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: var(--space-4);
  text-align: center;
}
.contact-card a.mailto {
  display: inline-block;
  margin-top: var(--space-2);
  font-size: 1.15rem;
  font-weight: 700;
  word-break: break-all;
}

/* ---------- Footer ---------- */
.site-footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: var(--space-4) 0 var(--space-3);
  margin-top: var(--space-5);
}
.site-footer__inner {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-3);
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  justify-content: space-between;
  align-items: center;
}
.site-footer nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
}
.site-footer nav a {
  color: var(--text-muted);
  font-size: 0.9rem;
}
.site-footer nav a:hover { color: var(--text); }
.site-footer__copy {
  color: var(--text-dim);
  font-size: 0.85rem;
  margin: 0;
}

/* ---------- Skip link (a11y) ---------- */
.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: var(--accent-ink);
  padding: 0.6rem 1rem;
  border-radius: 0 0 var(--radius-sm) 0;
  font-weight: 700;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ============================================================
   App-specific: Blitz
   To add another app later: copy this block, rename to
   .app-foo, and tweak --accent / hero / icon styles.
   ============================================================ */
.app-blitz .icon-placeholder { /* yellow square already matches */ }

/* ============================================================
   App-specific: Depths: Family
   ============================================================ */
.app-depths-family {
  --accent: #5fd68a;
  --accent-hover: #8ae9b0;
  --accent-ink: #061a10;
  --shadow-glow: 0 0 0 1px rgba(95, 214, 138, 0.28),
                 0 8px 30px rgba(95, 214, 138, 0.14);
}
.app-depths-family .hero::before {
  background: radial-gradient(60% 60% at 50% 0%,
              rgba(95, 214, 138, 0.22), transparent 70%);
}

/* ============================================================
   App-specific: Depths: Friends
   ============================================================ */
.app-depths-friends {
  --accent: #7a8cff;
  --accent-hover: #a4b0ff;
  --accent-ink: #070a1a;
  --shadow-glow: 0 0 0 1px rgba(122, 140, 255, 0.28),
                 0 8px 30px rgba(122, 140, 255, 0.14);
}
.app-depths-friends .hero::before {
  background: radial-gradient(60% 60% at 50% 0%,
              rgba(122, 140, 255, 0.22), transparent 70%);
}

/* ============================================================
   App-specific: Depths: Couples
   ============================================================ */
.app-depths-couples {
  --accent: #ff6ea6;
  --accent-hover: #ff97c1;
  --accent-ink: #1a0711;
  --shadow-glow: 0 0 0 1px rgba(255, 110, 166, 0.28),
                 0 8px 30px rgba(255, 110, 166, 0.14);
}
.app-depths-couples .hero::before {
  background: radial-gradient(60% 60% at 50% 0%,
              rgba(255, 110, 166, 0.22), transparent 70%);
}

/* Reduced motion */
@media (prefers-reduced-motion: reduce) {
  * { scroll-behavior: auto !important; transition: none !important; }
}