/* VocaHQ — minimal clean surface */
:root {
  --bg: #f7f6f3;
  --bg-soft: #efeeea;
  --ink: #1a1c1b;
  --ink-muted: #5c6360;
  --ink-faint: #6b736f;
  --line: #e2e0da;
  --line-strong: #cdcbc3;
  --accent: #1f8f75;
  --accent-hover: #176b58;
  --accent-soft: #e6f4ef;
  --on-accent: #ffffff;
  --shell: 880px;
  --font: "Atkinson Hyperlegible", system-ui, sans-serif;
  --display: "Epilogue", system-ui, sans-serif;
  --ease: cubic-bezier(0.22, 1, 0.36, 1);
  --radius: 8px;
  --radius-pill: 999px;
  --section-y: 4rem;
  --section-y-hero-top: 4.5rem;
  --section-y-hero-bottom: 4rem;
}

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

html {
  scroll-behavior: smooth;
  /* Offset sticky header so in-page anchors are not hidden under the bar */
  scroll-padding-top: 4.5rem;
}

body {
  margin: 0;
  min-height: 100vh;
  font-family: var(--font);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--ink);
  background: var(--bg);
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: var(--accent);
  text-underline-offset: 0.15em;
}

a:hover {
  color: var(--accent-hover);
}

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

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

.skip-link {
  position: absolute;
  left: 1rem;
  top: -3rem;
  z-index: 100;
  padding: 0.5rem 0.8rem;
  background: var(--ink);
  color: var(--bg);
  font-weight: 700;
  border-radius: var(--radius);
  text-decoration: none;
}

.skip-link:focus {
  top: 1rem;
}

.shell {
  width: min(100% - 2.5rem, var(--shell));
  margin-inline: auto;
}

/* Header */
.site-header {
  position: sticky;
  top: 0;
  z-index: 40;
  background: rgba(247, 246, 243, 0.9);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
}

.site-header.is-scrolled {
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  gap: 1rem;
  min-height: 3.75rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.55rem;
  color: var(--ink);
  text-decoration: none;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1rem;
  letter-spacing: -0.02em;
}

.brand img {
  border-radius: 8px;
  object-fit: cover;
}

.nav {
  display: none;
  gap: 1.25rem;
  margin-left: 0.5rem;
}

.nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 400;
}

.nav a:hover {
  color: var(--ink);
}

.header-actions {
  display: none;
  gap: 0.5rem;
  margin-left: auto;
}

.nav-toggle {
  margin-left: auto;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--line-strong);
  border-radius: var(--radius);
  background: transparent;
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  flex-shrink: 0;
}

.nav-toggle span:not(.sr-only) {
  display: block;
  width: 0.95rem;
  height: 1.5px;
  background: var(--ink);
  transition: transform 0.15s var(--ease);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  transform: translateY(3.25px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-3.25px) rotate(-45deg);
}

/* [hidden] must win over display:grid or the menu stays open on mobile */
.mobile-nav {
  display: grid;
  gap: 0.1rem;
  padding: 0.35rem 1.25rem 1rem;
  border-top: 1px solid var(--line);
}

.mobile-nav[hidden] {
  display: none !important;
}

.mobile-nav a {
  color: var(--ink);
  text-decoration: none;
  padding: 0.85rem 0.25rem;
  font-weight: 700;
  min-height: 2.75rem;
  display: flex;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 2.4rem;
  padding: 0.5rem 1.05rem;
  border-radius: var(--radius-pill);
  border: 1px solid transparent;
  font: inherit;
  font-size: 0.95rem;
  font-weight: 700;
  text-decoration: none;
  cursor: pointer;
  transition: background 0.15s var(--ease), border-color 0.15s var(--ease), color 0.15s var(--ease);
}

.btn-primary {
  background: var(--accent);
  color: var(--on-accent, #fff);
}

.btn-primary:hover {
  background: var(--accent-hover);
  color: var(--on-accent, #fff);
}

.btn-ghost {
  background: transparent;
  color: var(--ink);
  border-color: var(--line-strong);
}

.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-soft);
}

.btn-github {
  gap: 0.45rem;
  padding-inline: 0.95rem;
}

.btn-icon {
  flex-shrink: 0;
  display: block;
}

.btn-lg {
  min-height: 2.85rem;
  padding-inline: 1.2rem;
}

/* Hero */
.hero {
  padding: var(--section-y-hero-top) 0 var(--section-y-hero-bottom);
  overflow: hidden;
}

.hero-layout {
  display: grid;
  gap: 2rem;
  align-items: center;
}

.hero h1 {
  margin: 0;
  max-width: 20ch;
  font-family: var(--display);
  font-size: clamp(1.85rem, 6.5vw, 3.25rem);
  font-weight: 600;
  line-height: 1.12;
  letter-spacing: -0.03em;
  color: var(--ink);
  text-wrap: balance;
}

.lede {
  margin: 1.25rem 0 0;
  max-width: none;
  color: var(--ink-muted);
  font-size: 1.12rem;
  line-height: 1.65;
}

.hero-cta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.65rem;
  margin-top: 1.75rem;
}

/* Soft local-signal visual — light paper, teal accent, not a heavy desk panel */
.hero-wave {
  position: relative;
  color: var(--accent);
  min-height: 7.5rem;
  border-radius: 16px;
  background:
    linear-gradient(180deg, rgba(31, 143, 117, 0.06), rgba(31, 143, 117, 0.02));
  border: 1px solid rgba(31, 143, 117, 0.12);
  padding: 1.25rem 1rem;
  display: grid;
  place-items: center;
}

.wave-bars {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.28rem;
  width: 100%;
  height: 5.5rem;
}

.wave-bars span {
  flex: 1 1 0;
  max-width: 0.45rem;
  min-width: 0.22rem;
  height: 18%;
  border-radius: 999px;
  background: currentColor;
  opacity: 0.55;
  transform-origin: center;
  animation: wave-bar 1.4s ease-in-out infinite;
}

.wave-bars span:nth-child(4n + 1) { animation-duration: 1.15s; animation-delay: 0s; height: 28%; }
.wave-bars span:nth-child(4n + 2) { animation-duration: 1.55s; animation-delay: 0.12s; height: 62%; }
.wave-bars span:nth-child(4n + 3) { animation-duration: 1.25s; animation-delay: 0.05s; height: 44%; }
.wave-bars span:nth-child(4n + 4) { animation-duration: 1.7s; animation-delay: 0.2s; height: 78%; }
.wave-bars span:nth-child(odd) { opacity: 0.4; }
.wave-bars span:nth-child(3n) { opacity: 0.7; }

@keyframes wave-bar {
  0%, 100% { transform: scaleY(0.45); opacity: 0.35; }
  50% { transform: scaleY(1); opacity: 0.85; }
}

@media (prefers-reduced-motion: reduce) {
  .wave-bars span {
    animation: none;
    transform: scaleY(0.7);
    opacity: 0.5;
  }
}

/* Sections — shared vertical rhythm */
.section {
  padding: var(--section-y) 0;
}

.section-soft {
  background: var(--bg-soft);
  border-block: 1px solid var(--line);
}

.section-head {
  margin-bottom: 1.75rem;
  max-width: none;
}

.section-head h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.8vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-head p {
  margin: 0.55rem 0 0;
  max-width: none;
  color: var(--ink-muted);
}

/* Apps list */
.app-list {
  list-style: none;
  margin: 0;
  padding: 0;
  border-top: 1px solid var(--line);
}

.app {
  display: grid;
  gap: 0.65rem;
  padding: 1.5rem 0;
  border-bottom: 1px solid var(--line);
}

.app-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem 0.85rem;
}

.platform-icons {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.4rem;
  color: var(--ink);
}

/* Simple Icons (and server) via CSS mask so they pick up currentColor */
.platform-icon {
  width: 1.7rem;
  height: 1.7rem;
  flex-shrink: 0;
  display: block;
  background-color: currentColor;
  -webkit-mask: var(--icon) center / contain no-repeat;
  mask: var(--icon) center / contain no-repeat;
}

.platform-icons-pair .platform-icon {
  width: 1.35rem;
  height: 1.35rem;
}

.app-meta-text {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.45rem 0.65rem;
}

.platform {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--ink-faint);
}

.status {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--ink-muted);
}

.status-stable {
  color: var(--accent);
}

.app-main h3 {
  margin: 0 0 0.35rem;
  font-family: var(--display);
  font-size: 1.2rem;
  font-weight: 600;
  letter-spacing: -0.02em;
}

.app-main p {
  margin: 0;
  color: var(--ink-muted);
}

.app-tags {
  margin-top: 0.55rem !important;
  font-size: 0.9rem;
  color: var(--ink-faint) !important;
}

.app-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.95rem;
}

.app-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  min-height: 2.35rem;
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  border: 1px solid var(--line-strong);
  background: var(--bg);
  color: var(--ink);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 700;
  transition: border-color 0.15s var(--ease), color 0.15s var(--ease), background 0.15s var(--ease);
}

.app-link:hover {
  border-color: var(--accent);
  color: var(--accent-hover);
  background: var(--accent-soft);
}

.app-link-icon {
  flex-shrink: 0;
  display: block;
  opacity: 0.9;
}

/* Principles */
.principles {
  display: grid;
  gap: 1.5rem;
}

.principles article h3 {
  margin: 0 0 0.3rem;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
  letter-spacing: -0.015em;
}

.principles article p {
  margin: 0;
  color: var(--ink-muted);
}

/* Plans */
.plans {
  list-style: none;
  margin: 0;
  padding: 0;
  display: grid;
  gap: 1.5rem;
}

.plans li {
  display: grid;
  gap: 0.45rem;
}

.when {
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--accent);
}

.plans h3 {
  margin: 0 0 0.25rem;
  font-family: var(--display);
  font-size: 1.05rem;
  font-weight: 600;
}

.plans p {
  margin: 0;
  color: var(--ink-muted);
}

/* Close / get involved */
.close h2 {
  margin: 0;
  font-family: var(--display);
  font-size: clamp(1.45rem, 2.8vw, 1.85rem);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.close > p {
  margin: 0.75rem 0 0;
  color: var(--ink-muted);
  max-width: none;
}

.close .btn {
  margin-top: 1.5rem;
}

/* Footer */
.site-footer {
  padding: var(--section-y) 0 2rem;
  border-top: 1px solid var(--line);
}

.footer-inner {
  display: grid;
  gap: 1.5rem;
}

.footer-brand {
  display: flex;
  gap: 0.7rem;
  align-items: flex-start;
}

.footer-brand img {
  border-radius: 8px;
  object-fit: cover;
}

.footer-brand strong {
  font-family: var(--display);
  font-weight: 600;
  letter-spacing: -0.02em;
}

.footer-brand p {
  margin: 0.15rem 0 0;
  color: var(--ink-faint);
  font-size: 0.92rem;
}

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 0.25rem 0.35rem;
}

.footer-nav a {
  color: var(--ink-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 700;
  min-height: 2.75rem;
  display: inline-flex;
  align-items: center;
  padding: 0 0.4rem;
}

.footer-nav a:hover {
  color: var(--ink);
}

.footer-bottom {
  margin-top: 1.75rem;
  padding-top: 1.15rem;
  border-top: 1px solid var(--line);
  color: var(--ink-faint);
  font-size: 0.88rem;
  text-align: center;
}

.footer-bottom p {
  margin: 0;
}

/* Phone: slightly tighter vertical rhythm */
@media (max-width: 719px) {
  :root {
    --section-y: 3.25rem;
    --section-y-hero-top: 2.75rem;
    --section-y-hero-bottom: 3rem;
  }

  html {
    scroll-padding-top: 4.25rem;
  }

  .header-inner {
    min-height: 3.5rem;
  }

  .hero-cta {
    width: 100%;
  }

  .hero-cta .btn {
    flex: 1 1 auto;
    min-width: min(100%, 10rem);
  }

  .hero-wave {
    min-height: 5.5rem;
    padding: 0.9rem 0.75rem;
  }

  .wave-bars {
    height: 4rem;
  }

  .app-meta {
    width: 100%;
  }

  .when {
    color: var(--accent);
  }
}

/* Tablet: keep full nav but allow header to wrap cleanly if needed */
@media (min-width: 720px) and (max-width: 959px) {
  .header-inner {
    flex-wrap: wrap;
    row-gap: 0.5rem;
    padding-block: 0.35rem;
  }

  .nav {
    order: 3;
    flex: 1 1 100%;
    margin-left: 0;
    justify-content: flex-start;
    gap: 1rem;
    padding-bottom: 0.15rem;
  }

  .header-actions {
    margin-left: auto;
  }
}

@media (min-width: 720px) {
  .nav,
  .header-actions {
    display: flex;
  }

  .nav-toggle,
  .mobile-nav {
    display: none !important;
  }

  .hero {
    --section-y-hero-top: 5.5rem;
    --section-y-hero-bottom: 4.5rem;
  }

  .app {
    grid-template-columns: 6.75rem 1fr;
    gap: 1.35rem;
    align-items: center;
  }

  .app-meta {
    flex-direction: column;
    align-items: center;
    justify-content: center;
    gap: 0.5rem;
    text-align: center;
  }

  .platform-icon {
    width: 1.85rem;
    height: 1.85rem;
  }

  .platform-icons-pair .platform-icon {
    width: 1.45rem;
    height: 1.45rem;
  }

  .app-meta-text {
    flex-direction: column;
    align-items: center;
    gap: 0.2rem;
    text-align: center;
  }

  .plans li {
    grid-template-columns: 4.5rem 1fr;
    gap: 1.25rem;
    align-items: center;
  }

  .when {
    display: flex;
    align-items: center;
    justify-content: center;
    text-align: center;
    min-height: 100%;
  }

  .footer-inner {
    grid-template-columns: 1fr auto;
    align-items: start;
  }
}

@media (min-width: 960px) {
  .hero-layout {
    grid-template-columns: 1.15fr 0.85fr;
    gap: 2.5rem;
  }

  .hero-wave {
    min-height: 12rem;
  }

  .wave-bars {
    height: 8rem;
  }

  .app {
    grid-template-columns: 7.75rem 1fr;
    gap: 1.75rem;
  }

  .principles {
    grid-template-columns: 1fr 1fr;
    gap: 1.75rem 2.5rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  *,
  *::before,
  *::after {
    transition-duration: 0.01ms !important;
  }
}