/* ============================================================
   OpenWispr — "Voice Editorial"
   Lavender paper, deep-teal ink accents, high-contrast and literary.
   The page nods to the app: a soft refresh-flash on load and on
   primary actions, and a live waveform that echoes the logo mark.
   Type: Fraunces (display) · Hanken Grotesk (body) · IBM Plex Mono (data)
   Palette pulled from the logo: lilac #ECDBFA · pine #014643 · ink #1A1A1A
   ============================================================ */

@import url("https://fonts.googleapis.com/css2?family=Fraunces:ital,opsz,wght@0,9..144,300..900;1,9..144,400..700&family=Hanken+Grotesk:wght@400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap");

:root {
  --paper: #f1e9fb;
  --paper-2: #e7daf6;
  --panel: #fbf7fe;
  --ink: #1a1a1a;
  --ink-soft: #4c4658;
  --ink-faint: #8b83a0;
  --accent: #0b6a60;
  --accent-deep: #014643;
  --line: rgba(26, 26, 26, 0.16);
  --line-strong: rgba(26, 26, 26, 0.42);

  --display: "Fraunces", Georgia, serif;
  --body: "Hanken Grotesk", system-ui, sans-serif;
  --mono: "IBM Plex Mono", ui-monospace, monospace;

  --maxw: 1180px;
  --gutter: clamp(1.25rem, 4vw, 4rem);
  --radius: 14px;
  --ease: cubic-bezier(0.2, 0.7, 0.2, 1);
}

/* ---- dark theme ("night"): inverted lavender ink/paper, brighter teal ---- */
[data-theme="dark"] {
  --paper: #17141f;
  --paper-2: #1e1a29;
  --panel: #221d30;
  --ink: #ece6f5;
  --ink-soft: #b3a9c7;
  --ink-faint: #7c7393;
  --accent: #2fc4b0;
  --accent-deep: #5bd6c6;
  --line: rgba(236, 230, 245, 0.14);
  --line-strong: rgba(236, 230, 245, 0.34);
}
[data-theme="dark"] body {
  background-image:
    radial-gradient(var(--line) 1px, transparent 1.4px),
    radial-gradient(circle at 12% -10%, rgba(47, 196, 176, 0.1), transparent 42%),
    radial-gradient(circle at 100% 0%, rgba(160, 120, 240, 0.08), transparent 38%);
}
[data-theme="dark"] body::after {
  mix-blend-mode: screen;
  opacity: 0.04;
}
[data-theme="dark"] #flash {
  background: var(--paper);
}
[data-theme="dark"] .device {
  box-shadow:
    0 0 0 1px rgba(236, 230, 245, 0.1) inset,
    18px 26px 0 -6px rgba(0, 0, 0, 0.5),
    32px 46px 70px -30px rgba(0, 0, 0, 0.8);
}
:root {
  color-scheme: light;
}
[data-theme="dark"] {
  color-scheme: dark;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}
html[dir="rtl"] .hero {
  direction: rtl;
}
html[dir="rtl"] .hero h1 em::after {
  transform: skewX(12deg);
}

body {
  margin: 0;
  background-color: var(--paper);
  color: var(--ink);
  font-family: var(--body);
  font-size: 18px;
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
  /* layered dot grid + lavender/teal warmth */
  background-image:
    radial-gradient(var(--line) 1px, transparent 1.4px),
    radial-gradient(circle at 12% -10%, rgba(11, 106, 96, 0.07), transparent 42%),
    radial-gradient(circle at 100% 0%, rgba(140, 90, 220, 0.08), transparent 38%);
  background-size:
    22px 22px,
    100% 100%,
    100% 100%;
  background-attachment: fixed, fixed, fixed;
  overflow-x: hidden;
}

/* film grain overlay */
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: 9999;
  pointer-events: none;
  opacity: 0.05;
  mix-blend-mode: multiply;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='160' height='160'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.85' numOctaves='3' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
}

/* refresh flash: a full-screen sweep on load and on primary actions */
#flash {
  position: fixed;
  inset: 0;
  z-index: 10000;
  background: var(--ink);
  pointer-events: none;
  opacity: 0;
}
.flashing #flash {
  animation: refresh 0.62s steps(1, end) 1;
}
@keyframes refresh {
  0% {
    opacity: 0;
  }
  10% {
    opacity: 1;
  }
  46% {
    opacity: 1;
  }
  56% {
    opacity: 0;
  }
  72% {
    opacity: 0.92;
  }
  100% {
    opacity: 0;
  }
}

/* ---------- layout primitives ---------- */
.wrap {
  width: 100%;
  max-width: var(--maxw);
  margin: 0 auto;
  padding-inline: var(--gutter);
}

a {
  color: inherit;
}

.mono {
  font-family: var(--mono);
  font-size: 0.72rem;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

/* ---------- top bar ---------- */
.topbar {
  position: sticky;
  top: 0;
  z-index: 50;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.9rem var(--gutter);
  border-bottom: 1.5px solid var(--ink);
  background: color-mix(in srgb, var(--paper) 86%, transparent);
  backdrop-filter: blur(8px);
}
.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.35rem;
  letter-spacing: -0.02em;
  text-decoration: none;
  color: var(--ink);
}
.brand .dot {
  color: var(--accent);
}
.brand-mark {
  width: 1.5em;
  height: 1.5em;
  border-radius: 7px;
  margin-right: 0.45ch;
  display: block;
}
.topbar nav {
  display: flex;
  align-items: center;
  gap: clamp(0.75rem, 2.5vw, 2rem);
}
.topbar nav a {
  text-decoration: none;
  color: var(--ink-soft);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color 0.2s var(--ease);
}
.topbar nav a:hover {
  color: var(--accent);
}
.topbar .nav-cta {
  padding: 0.45rem 1rem;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  color: var(--ink);
  background: var(--panel);
  transition:
    transform 0.18s var(--ease),
    background 0.18s var(--ease),
    color 0.18s var(--ease);
}
.topbar .nav-cta:hover {
  background: var(--ink);
  color: var(--paper);
  transform: translateY(-1px);
}
.ver-chip {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.12em;
  padding: 0.18rem 0.5rem;
  border: 1px solid var(--line-strong);
  border-radius: 6px;
  color: var(--ink-soft);
}
.ver-chip:empty {
  display: none;
}

/* theme toggle + language picker */
.tools {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
}
.theme-toggle {
  width: 2.1rem;
  height: 2.1rem;
  display: inline-grid;
  place-items: center;
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  background: var(--panel);
  color: var(--ink);
  cursor: pointer;
  padding: 0;
  transition:
    background 0.18s var(--ease),
    color 0.18s var(--ease),
    transform 0.18s var(--ease);
}
.theme-toggle:hover {
  transform: translateY(-1px);
  background: var(--ink);
  color: var(--paper);
}
.theme-toggle svg {
  width: 1.05rem;
  height: 1.05rem;
  display: block;
}
.theme-toggle .i-sun {
  display: none;
}
[data-theme="dark"] .theme-toggle .i-sun {
  display: block;
}
[data-theme="dark"] .theme-toggle .i-moon {
  display: none;
}
.lang-select {
  font-family: var(--body);
  font-weight: 600;
  font-size: 0.88rem;
  color: var(--ink);
  background: var(--panel);
  border: 1.5px solid var(--ink);
  border-radius: 999px;
  padding: 0.4rem 1.9rem 0.4rem 0.9rem;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%231a1a1a' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.7rem center;
  transition: transform 0.18s var(--ease);
}
[data-theme="dark"] .lang-select {
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='8' viewBox='0 0 12 8'%3E%3Cpath d='M1 1l5 5 5-5' stroke='%23ece6f5' stroke-width='1.6' fill='none' stroke-linecap='round'/%3E%3C/svg%3E");
}
.lang-select:hover {
  transform: translateY(-1px);
}
.lang-select:focus-visible,
.theme-toggle:focus-visible,
.nav-cta:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* ---------- hero ---------- */
.hero {
  position: relative;
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  gap: clamp(1.5rem, 5vw, 4rem);
  align-items: center;
  padding: clamp(3rem, 9vh, 7rem) 0 clamp(2.5rem, 7vh, 5rem);
}
.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.6ch;
  color: var(--accent-deep);
  margin-bottom: 1.25rem;
}
.hero-eyebrow::before {
  content: "";
  width: 1.8rem;
  height: 1.5px;
  background: var(--accent);
}
.hero h1 {
  font-family: var(--display);
  font-weight: 360;
  font-size: clamp(2.9rem, 7.5vw, 5.6rem);
  line-height: 0.96;
  letter-spacing: -0.025em;
  margin: 0 0 1.4rem;
}
.hero h1 em {
  font-style: italic;
  font-weight: 500;
  position: relative;
  white-space: nowrap;
}
.hero h1 em::after {
  content: "";
  position: absolute;
  left: -0.05em;
  right: -0.05em;
  bottom: 0.08em;
  height: 0.34em;
  background: var(--accent);
  opacity: 0.22;
  z-index: -1;
  transform: skewX(-12deg);
}
.hero p.lede {
  font-size: clamp(1.05rem, 1.6vw, 1.28rem);
  color: var(--ink-soft);
  max-width: 36ch;
  margin: 0 0 2rem;
}
.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  align-items: center;
}
.hero-meta {
  margin-top: 1.6rem;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem 1.4rem;
  color: var(--ink-faint);
  font-size: 0.9rem;
}
.hero-meta span {
  display: inline-flex;
  align-items: center;
  gap: 0.5ch;
}
.hero-meta span::before {
  content: "·";
  color: var(--accent);
  font-weight: 700;
}

/* buttons */
.btn {
  --bg: var(--ink);
  --fg: var(--paper);
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 0.6ch;
  font-family: var(--body);
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 1.6rem;
  border-radius: 999px;
  border: 1.5px solid var(--ink);
  background: var(--bg);
  color: var(--fg);
  text-decoration: none;
  cursor: pointer;
  overflow: hidden;
  transition: transform 0.18s var(--ease);
}
.btn::after {
  /* invert sweep on hover */
  content: "";
  position: absolute;
  inset: 0;
  background: var(--paper);
  transform: translateY(101%);
  transition: transform 0.26s var(--ease);
  z-index: 0;
}
.btn span {
  position: relative;
  z-index: 1;
  transition: color 0.26s var(--ease);
}
.btn:hover {
  transform: translateY(-2px);
}
.btn:hover::after {
  transform: translateY(0);
}
.btn:hover span {
  color: var(--ink);
}
.btn.ghost {
  --bg: transparent;
  --fg: var(--ink);
}
.btn.ghost::after {
  background: var(--ink);
}
.btn.ghost:hover span {
  color: var(--paper);
}

/* ---------- hero device mockup: an open MacBook running OpenWispr ----------
   The lid shows a browser with Claude / ChatGPT / Gmail tabs; the OpenWispr
   pill floats over it (exact app styling: zinc shell, emerald level meter,
   red stop) while dictated text types itself into the active app's composer. */
.device {
  position: relative;
  justify-self: center;
  width: min(470px, 100%);
}
.macbook {
  position: relative;
  transform: rotate(0.6deg);
  transition: transform 0.5s var(--ease);
  filter: drop-shadow(16px 24px 26px rgba(26, 26, 26, 0.26));
}
.device:hover .macbook {
  transform: rotate(0deg) translateY(-4px);
}
/* lid */
.mb-screen {
  position: relative;
  background: #0b0b0e;
  border: 1px solid rgba(0, 0, 0, 0.55);
  border-radius: 16px 16px 5px 5px;
  padding: 11px 11px 13px;
}
.mb-screen::before {
  /* camera dot */
  content: "";
  position: absolute;
  top: 5px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: #2a2a2e;
}
/* base / keyboard deck */
.mb-base {
  position: relative;
  height: 13px;
  width: 116%;
  margin-left: -8%;
  background: linear-gradient(#dadae0, #b3b3bd);
  border-radius: 1px 1px 11px 11px;
  box-shadow: inset 0 2px 1px rgba(255, 255, 255, 0.55);
}
.mb-base::before {
  /* hinge notch */
  content: "";
  position: absolute;
  top: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 15%;
  height: 6px;
  background: linear-gradient(#9a9aa4, #c2c2ca);
  border-radius: 0 0 7px 7px;
}
[data-theme="dark"] .mb-base {
  background: linear-gradient(#3a3a42, #24242b);
}
[data-theme="dark"] .mb-base::before {
  background: linear-gradient(#1c1c22, #2c2c34);
}

/* the on-screen browser */
.browser {
  position: relative;
  background: var(--panel);
  border-radius: 6px;
  overflow: hidden;
  aspect-ratio: 16 / 10.2;
  display: flex;
  flex-direction: column;
  box-shadow: 0 0 0 1px rgba(0, 0, 0, 0.4);
}
.tabs {
  display: flex;
  gap: 2px;
  padding: 6px 6px 0;
  background: color-mix(in srgb, var(--ink) 7%, var(--panel));
  border-bottom: 1px solid var(--line);
}
.tab {
  display: inline-flex;
  align-items: center;
  gap: 5px;
  padding: 5px 9px;
  font-size: 0.6rem;
  font-weight: 600;
  color: var(--ink-faint);
  border-radius: 7px 7px 0 0;
  white-space: nowrap;
  transition:
    background 0.25s var(--ease),
    color 0.25s var(--ease);
}
.tab svg {
  width: 12px;
  height: 12px;
  display: block;
}
.tab.active {
  background: var(--panel);
  color: var(--ink);
}
/* chat pane: a context bubble + the composer the text types into */
.chatpane {
  flex: 1 1 auto;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  gap: 9px;
  padding: 13px 13px 40px;
}
.bubble {
  align-self: flex-start;
  max-width: 78%;
  background: color-mix(in srgb, var(--ink) 6%, var(--panel));
  border: 1px solid var(--line);
  border-radius: 11px 11px 11px 3px;
  padding: 7px 10px;
  font-size: 0.64rem;
  line-height: 1.4;
  color: var(--ink-soft);
}
.composer {
  display: flex;
  align-items: center;
  gap: 8px;
  border: 1.5px solid var(--line-strong);
  border-radius: 11px;
  padding: 8px 11px;
  background: var(--panel);
}
.composer-text {
  flex: 1 1 auto;
  min-width: 0;
  font-size: 0.66rem;
  line-height: 1.4;
  color: var(--ink);
}
.composer .caret {
  display: inline-block;
  width: 1.5px;
  height: 0.95em;
  margin-left: 1px;
  vertical-align: -1px;
  background: var(--accent);
  animation: caret 1s steps(1, end) infinite;
}
@keyframes caret {
  50% {
    opacity: 0;
  }
}
.composer .send {
  flex: none;
  display: inline-grid;
  place-items: center;
  width: 18px;
  height: 18px;
  color: var(--accent);
}
.composer .send svg {
  width: 12px;
  height: 12px;
}

/* the OpenWispr pill — floats above the dock, exact app styling */
.pill {
  position: absolute;
  left: 50%;
  bottom: 12px;
  transform: translateX(-50%);
  display: inline-flex;
  align-items: center;
  gap: 9px;
  padding: 6px 12px;
  border-radius: 999px;
  background: rgba(24, 24, 27, 0.92); /* zinc-900/90 */
  color: #f4f4f5; /* zinc-100 */
  box-shadow: 0 10px 24px -8px rgba(0, 0, 0, 0.55);
  backdrop-filter: blur(4px);
}
.pill .cap {
  font-size: 0.56rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  color: #d4d4d8; /* zinc-300 */
}
.pill .meter {
  width: 64px;
  height: 7px;
  border-radius: 999px;
  background: #3f3f46; /* zinc-700 */
  overflow: hidden;
}
.pill .meter i {
  display: block;
  height: 100%;
  width: 40%;
  border-radius: 999px;
  background: #34d399; /* emerald-400 */
  animation: meter 1.15s ease-in-out infinite;
}
@keyframes meter {
  0%,
  100% {
    width: 16%;
  }
  45% {
    width: 92%;
  }
  70% {
    width: 54%;
  }
}
.pill .stop {
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #ef4444; /* red-500 */
}

/* ---------- section scaffolding ---------- */
section {
  position: relative;
}
.section-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  padding-block: 1rem;
  border-top: 1.5px solid var(--ink);
  margin-bottom: 2.5rem;
}
.section-head h2 {
  font-family: var(--display);
  font-weight: 380;
  font-size: clamp(1.8rem, 4vw, 3rem);
  letter-spacing: -0.02em;
  margin: 0;
}
.section-head .idx {
  color: var(--accent);
  font-family: var(--mono);
  font-size: 0.8rem;
  letter-spacing: 0.14em;
  white-space: nowrap;
}

/* ---------- features ---------- */
.features {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  padding-bottom: clamp(3rem, 8vh, 6rem);
}
.feat {
  background: var(--panel);
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 1.6rem 1.5rem 1.7rem;
  transition:
    transform 0.25s var(--ease),
    box-shadow 0.25s var(--ease),
    border-color 0.25s var(--ease);
}
.feat:hover {
  transform: translateY(-4px);
  border-color: var(--ink);
  box-shadow: 10px 14px 0 -4px rgba(26, 26, 26, 0.12);
}
.feat .num {
  font-family: var(--mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.12em;
}
.feat h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.4rem;
  margin: 0.6rem 0 0.5rem;
  letter-spacing: -0.01em;
}
.feat p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.98rem;
}

/* ---------- specs / platforms strip ---------- */
.specs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
  border: 1.5px solid var(--ink);
  border-radius: var(--radius);
  overflow: hidden;
  margin-bottom: clamp(3rem, 8vh, 6rem);
  background: var(--panel);
}
.spec {
  padding: 1.5rem 1.4rem;
  border-right: 1.5px solid var(--line-strong);
}
.spec:last-child {
  border-right: none;
}
.spec .k {
  font-family: var(--mono);
  font-size: 0.66rem;
  letter-spacing: 0.14em;
  color: var(--ink-faint);
}
.spec .v {
  font-family: var(--display);
  font-size: 1.7rem;
  font-weight: 400;
  margin-top: 0.35rem;
}
.spec .v small {
  font-size: 0.95rem;
  color: var(--ink-soft);
}

/* ---------- how it works ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
  margin-bottom: clamp(3rem, 8vh, 6rem);
}
.step {
  position: relative;
  padding: 1.6rem 1.5rem;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius);
  background: var(--panel);
}
.step .n {
  display: inline-grid;
  place-items: center;
  width: 2.4rem;
  height: 2.4rem;
  border-radius: 999px;
  background: var(--accent-deep);
  color: #fff;
  font-family: var(--display);
  font-weight: 600;
  font-size: 1.1rem;
}
.step h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: 1.3rem;
  margin: 0.9rem 0 0.45rem;
}
.step p {
  margin: 0;
  color: var(--ink-soft);
  font-size: 0.96rem;
}

/* ---------- download CTA ---------- */
.method {
  position: relative;
  border: 1.5px solid var(--line-strong);
  border-radius: var(--radius);
  padding: 2.5rem 1.5rem;
  margin: 1.4rem 0;
  background: var(--panel);
  text-align: center;
}
.method.primary {
  border-color: var(--ink);
  box-shadow: 10px 14px 0 -4px rgba(26, 26, 26, 0.12);
}
.method h3 {
  font-family: var(--display);
  font-weight: 500;
  font-size: clamp(1.8rem, 4vw, 2.6rem);
  margin: 0 0 0.6rem;
}
.method p {
  color: var(--ink-soft);
  margin: 0 auto 1.4rem;
  max-width: 46ch;
}
/* all-platforms disclosure */
.all-dl {
  margin-top: 1.6rem;
  font-size: 0.92rem;
}
.all-dl summary {
  cursor: pointer;
  list-style: none;
  color: var(--ink-faint);
  font-family: var(--mono);
  font-size: 0.68rem;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}
.all-dl summary:hover {
  color: var(--accent);
}
.all-dl ul {
  list-style: none;
  margin: 1rem 0 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.5rem 1.4rem;
}
.all-dl a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
}
.all-dl a:hover {
  color: var(--accent);
}

/* ---------- footer ---------- */
.foot {
  border-top: 1.5px solid var(--ink);
  padding: 2.5rem 0 3rem;
  margin-top: 2rem;
}
.foot .wrap {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: center;
}
.foot .brand {
  font-size: 1.15rem;
}
.foot p {
  margin: 0;
  color: var(--ink-faint);
  font-size: 0.85rem;
}
.foot nav {
  display: flex;
  gap: 1.2rem;
}
.foot nav a {
  color: var(--ink-soft);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
}
.foot nav a:hover {
  color: var(--accent);
}

/* ---------- entrance reveals ---------- */
.reveal {
  opacity: 0;
  transform: translateY(18px);
}
.in .reveal {
  animation: rise 0.7s var(--ease) forwards;
}
.in .reveal:nth-child(2) {
  animation-delay: 0.06s;
}
.in .reveal:nth-child(3) {
  animation-delay: 0.12s;
}
.in .reveal:nth-child(4) {
  animation-delay: 0.18s;
}
@keyframes rise {
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* Scroll reveals are progressive enhancement: content is visible by default,
   and only hidden once JS arms it (.has-io on <html>). No JS / reduced motion
   leaves everything visible. */
.has-io [data-io] {
  opacity: 0;
  transform: translateY(26px);
  transition:
    opacity 0.7s var(--ease),
    transform 0.7s var(--ease);
}
.has-io [data-io].seen {
  opacity: 1;
  transform: none;
}

/* ---------- responsive ---------- */
@media (max-width: 880px) {
  .hero {
    grid-template-columns: 1fr;
  }
  .device {
    grid-row: 1;
    margin-bottom: 1rem;
    width: min(360px, 86%);
    transform: rotate(0);
  }
  .features {
    grid-template-columns: 1fr;
  }
  .steps {
    grid-template-columns: 1fr;
  }
  .specs {
    grid-template-columns: repeat(2, 1fr);
  }
  .spec:nth-child(2) {
    border-right: none;
  }
  .spec:nth-child(1),
  .spec:nth-child(2) {
    border-bottom: 1.5px solid var(--line-strong);
  }
}
@media (max-width: 520px) {
  .specs {
    grid-template-columns: 1fr;
  }
  .spec {
    border-right: none;
    border-bottom: 1.5px solid var(--line-strong);
  }
  .spec:last-child {
    border-bottom: none;
  }
  .topbar nav .nav-link {
    display: none;
  }
}

/* ---------- accessibility: honor reduced motion ---------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
  .flashing #flash {
    animation: none;
  }
  .reveal,
  [data-io] {
    opacity: 1 !important;
    transform: none !important;
  }
}