/* bubbl! landing page styles
 * Imports design tokens from colors_and_type.css.
 * All color/type/spacing values come from those variables — nothing invented here.
 */

/* ── reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  background: var(--bg-black);
  color: var(--fg-primary);
  font-family: var(--font-body);
  font-size: var(--type-body-lg-size);
  line-height: var(--type-body-lg-lh);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { font-family: inherit; cursor: pointer; }
ul, ol { list-style: none; }

/* ── focus rings (WCAG AA) ── */
:focus-visible {
  outline: 2px solid var(--brand-accent);
  outline-offset: 3px;
  border-radius: 4px;
}

/* ── layout helpers ── */
.container {
  width: 100%;
  max-width: 1200px;
  margin-inline: auto;
  padding-inline: var(--space-xxxl);
}

/* ── typography helpers ── */
.eyebrow {
  font-size: var(--type-label-md-size);
  line-height: var(--type-label-md-lh);
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--brand-accent);
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: var(--space-s);
}
.eyebrow::before {
  content: "";
  width: 20px;
  height: 1px;
  background: var(--brand-accent);
  flex-shrink: 0;
}

.tagline-serif {
  font-family: var(--font-accent);
  font-style: italic;
  font-weight: 400;
  color: var(--brand-accent);
}

/* ── buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-s);
  padding: 14px 24px;
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  letter-spacing: var(--type-label-lg-tracking);
  border: 1px solid transparent;
  transition: opacity var(--motion-short) var(--ease-standard),
              box-shadow var(--motion-short) var(--ease-standard);
}
.btn-primary {
  background: var(--brand-accent);
  color: #000;
  box-shadow: 0 0 0 1px rgba(79,203,181,0.30), 0 0 28px rgba(79,203,181,0.20);
}
.btn-primary:hover { opacity: 0.88; }
.btn-secondary {
  background: var(--surface);
  color: var(--fg-primary);
  border-color: var(--hairline);
}
.btn-secondary:hover { border-color: rgba(255,255,255,0.18); }

/* ── pills ── */
.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 7px var(--space-m);
  border-radius: var(--radius-pill);
  font-size: var(--type-label-md-size);
  font-weight: 500;
  letter-spacing: 0.04em;
  border: 1px solid;
  white-space: nowrap;
}
.pill-teal {
  background: rgba(79,203,181,0.10);
  border-color: rgba(79,203,181,0.30);
  color: var(--brand-accent);
}
.pill-surface {
  background: var(--surface);
  border-color: var(--hairline);
  color: var(--fg-secondary);
}

/* pulsing live dot */
.live-dot {
  width: 7px;
  height: 7px;
  border-radius: var(--radius-pill);
  background: var(--brand-accent);
  flex-shrink: 0;
  animation: livePulse 1.4s cubic-bezier(0.45,0,0.55,1) infinite alternate;
}
@keyframes livePulse {
  from { opacity: 0.55; }
  to   { opacity: 1.00; }
}

/* ── cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  padding: var(--space-xxl);
}

/* ── section spacing ── */
section {
  padding-block: 100px;
}
section + section {
  border-top: 1px solid var(--hairline);
}

/* ── scroll-reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 400ms var(--ease-standard),
              transform 400ms var(--ease-standard);
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ══════════════════════════════════════
   NAV
══════════════════════════════════════ */
#site-nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(0,0,0,0.88);
  backdrop-filter: none; /* no frosted glass per design system */
  -webkit-backdrop-filter: none;
  border-bottom: 1px solid transparent;
  transition: border-color var(--motion-medium) var(--ease-standard);
}
#site-nav.scrolled { border-color: var(--hairline); }

.nav-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 60px;
}
.nav-wordmark {
  font-family: var(--font-display);
  font-size: 22px;
  font-weight: 600;
  letter-spacing: var(--type-display-lg-tracking);
  color: var(--fg-primary);
}
.nav-wordmark span { color: var(--brand-accent); }

.nav-links {
  display: flex;
  align-items: center;
  gap: var(--space-xxl);
}
.nav-links a {
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  letter-spacing: var(--type-label-lg-tracking);
  color: var(--fg-secondary);
  transition: color var(--motion-short) var(--ease-standard);
}
.nav-links a:hover { color: var(--fg-primary); }
.nav-github {
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  border: 1px solid var(--hairline);
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  color: var(--fg-secondary);
  transition: border-color var(--motion-short) var(--ease-standard),
              color var(--motion-short) var(--ease-standard);
}
.nav-github:hover { border-color: rgba(255,255,255,0.22); color: var(--fg-primary); }

/* hamburger */
.nav-menu-btn {
  display: none;
  background: none;
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xs);
  padding: 8px;
  color: var(--fg-primary);
}
.nav-menu-btn svg { display: block; }

.nav-mobile-overlay {
  display: none;
  position: fixed;
  inset: 60px 0 0 0;
  background: var(--bg-black);
  border-top: 1px solid var(--hairline);
  padding: var(--space-xxl) var(--space-xxxl);
  flex-direction: column;
  gap: var(--space-xxl);
  z-index: 99;
}
.nav-mobile-overlay.open { display: flex; }
.nav-mobile-overlay a {
  font-size: var(--type-title-lg-size);
  font-weight: 500;
  color: var(--fg-secondary);
  padding-block: var(--space-s);
  border-bottom: 1px solid var(--hairline);
}

/* ══════════════════════════════════════
   HERO
══════════════════════════════════════ */
#hero {
  padding-block: 0;
  min-height: calc(100vh - 60px);
  display: flex;
  align-items: stretch;
  overflow: hidden;
  border-bottom: 1px solid var(--hairline);
}

.hero-left {
  flex: 1.1;
  padding: 80px var(--space-xxxl) 80px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: var(--space-xxl);
  background: radial-gradient(ellipse at 20% 40%, rgba(79,203,181,0.12), transparent 60%);
  max-width: 680px;
}

.hero-wordmark {
  font-family: var(--font-display);
  font-size: 80px;
  font-weight: 600;
  letter-spacing: -0.04em;
  line-height: 1;
  color: var(--fg-primary);
}
.hero-wordmark .accent { color: var(--brand-accent); }

.hero-tagline {
  font-size: 26px;
  line-height: 1.2;
  margin-top: -var(--space-m);
}

.hero-pitch {
  font-size: var(--type-title-lg-size);
  line-height: var(--type-title-lg-lh);
  color: var(--fg-secondary);
  max-width: 520px;
}

.hero-platforms {
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
}
.hero-platforms-label {
  font-size: var(--type-label-md-size);
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--fg-tertiary);
  font-weight: 500;
}
.hero-platform-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-s);
}
.platform-pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-s);
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  background: var(--surface);
  border: 1px solid var(--hairline);
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  color: var(--fg-primary);
  transition: border-color var(--motion-short) var(--ease-standard);
}
.platform-pill:hover { border-color: rgba(79,203,181,0.35); }
.platform-pill svg { color: var(--brand-accent); flex-shrink: 0; }
.platform-pill .coming-soon {
  font-size: 10px;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-accent);
  background: rgba(79,203,181,0.10);
  border: 1px solid rgba(79,203,181,0.25);
  border-radius: var(--radius-pill);
  padding: 2px 8px;
  margin-left: var(--space-xxs);
}

/* hero illustration */
.hero-right {
  flex: 1;
  background: linear-gradient(160deg, #6EE3CC 0%, #4FCBB5 50%, #2FA48F 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  min-height: 540px;
}
.hero-right-vignette {
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at center, transparent 45%, rgba(0,0,0,0.18) 100%);
  pointer-events: none;
}

/* phone mockup */
.phone-mockup {
  width: 280px;
  height: 560px;
  border-radius: 44px;
  background: radial-gradient(ellipse at 30% 35%, #2a3140 0%, #1a1f28 40%, #0a0c10 80%);
  border: 2px solid rgba(255,255,255,0.12);
  box-shadow: 0 24px 64px rgba(0,0,0,0.55), 0 4px 16px rgba(0,0,0,0.35);
  transform: rotate(-4deg);
  position: relative;
  overflow: hidden;
  flex-shrink: 0;
}

/* face silhouettes inside phone */
.phone-face {
  position: absolute;
  border-radius: 50% 50% 42% 42%;
  border: 1.5px dashed rgba(79,203,181,0.5);
}
.phone-face-1 {
  left: 12%;
  top: 22%;
  width: 82px;
  height: 104px;
  background: radial-gradient(ellipse at 50% 32%, #5a4a45, #3a2e2c 70%);
}
.phone-face-2 {
  right: 10%;
  top: 25%;
  width: 76px;
  height: 96px;
  background: radial-gradient(ellipse at 50% 32%, #4a4a5a, #2e2e3c 70%);
}

/* speech bubbles inside phone */
.phone-bubble {
  position: absolute;
  background: linear-gradient(180deg, rgba(15,22,32,0.96), rgba(16,32,26,0.96));
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: var(--radius-bubble);
  padding: 10px 14px;
  box-shadow: 0 6px 20px rgba(0,0,0,0.55);
}
.phone-bubble-speaker {
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: 4px;
}
.phone-bubble-text {
  font-family: var(--font-display);
  font-size: 12px;
  line-height: 1.35;
  color: var(--fg-primary);
}
.phone-bubble-text .em { color: #FF5C6B; font-weight: 500; }
.phone-bubble-1 {
  left: 4%;
  top: 8%;
  max-width: 162px;
}
.phone-bubble-2 {
  right: 2%;
  top: 12%;
  max-width: 150px;
}

/* phone status bar */
.phone-statusbar {
  position: absolute;
  bottom: var(--space-m);
  left: var(--space-m);
  right: var(--space-m);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
  padding: 6px 12px;
  background: rgba(0,0,0,0.60);
  border-radius: var(--radius-pill);
  border: 1px solid rgba(255,255,255,0.08);
}
.phone-statusbar-dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-pill);
  background: var(--status-live);
  animation: livePulse 1.4s cubic-bezier(0.45,0,0.55,1) infinite alternate;
}
.phone-statusbar-text {
  font-family: var(--font-display);
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--status-live);
}

/* ══════════════════════════════════════
   PROBLEM
══════════════════════════════════════ */
#problem .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.problem-copy h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
  margin-bottom: var(--space-xl);
}
.problem-copy h2 span { color: var(--brand-accent); }
.problem-copy p {
  color: var(--fg-secondary);
  font-size: var(--type-body-lg-size);
  line-height: 1.75;
  max-width: 480px;
}

/* subtitle vs bubble comparison */
.problem-visual {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}
.vs-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  overflow: hidden;
}
.vs-label {
  padding: var(--space-s) var(--space-l);
  font-size: var(--type-label-md-size);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  border-bottom: 1px solid var(--hairline);
}
.vs-label.bad  { color: var(--status-alert);  background: var(--status-alert-soft); }
.vs-label.good { color: var(--brand-accent);  background: rgba(79,203,181,0.08); }
.vs-body {
  padding: var(--space-xl) var(--space-l);
}

/* subtitle strip mock */
.subtitle-strip {
  background: rgba(0,0,0,0.80);
  border-radius: var(--radius-xs);
  padding: 10px 16px;
  text-align: center;
  font-size: 13px;
  color: var(--fg-secondary);
  letter-spacing: 0.01em;
}
.subtitle-strip .speaker-unknown {
  font-size: 11px;
  color: var(--fg-tertiary);
  margin-bottom: 4px;
}

/* face-anchored bubble mock */
.face-scene {
  display: flex;
  gap: var(--space-xxl);
  align-items: flex-start;
}
.face-anchor {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-xs);
}
.face-circle {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1.5px dashed rgba(79,203,181,0.45);
  background: var(--surface-variant);
}
.mini-bubble {
  background: linear-gradient(180deg, rgba(15,22,32,0.96), rgba(16,32,26,0.96));
  border: 1px solid rgba(255,255,255,0.10);
  border-radius: var(--radius-bubble);
  padding: 8px 12px;
  font-size: 11px;
  color: var(--fg-primary);
  white-space: nowrap;
}
.mini-bubble .spk {
  font-size: 9px;
  font-weight: 500;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--brand-accent);
  margin-bottom: 3px;
}

/* ══════════════════════════════════════
   FEATURES GRID
══════════════════════════════════════ */
#features .section-header {
  margin-bottom: 56px;
}
#features .section-header h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
}
#features .section-header h2 span { color: var(--brand-accent); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1px;
  background: var(--hairline);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  overflow: hidden;
}
.feature-card {
  background: var(--surface);
  padding: var(--space-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
  transition: background var(--motion-short) var(--ease-standard);
}
.feature-card:hover { background: var(--surface-variant); }
.feature-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-accent);
  flex-shrink: 0;
}
.feature-title {
  font-size: var(--type-title-lg-size);
  font-weight: 500;
  letter-spacing: var(--type-title-lg-tracking);
  color: var(--fg-primary);
}
.feature-desc {
  font-size: var(--type-body-md-size);
  line-height: var(--type-body-md-lh);
  color: var(--fg-secondary);
}

/* ══════════════════════════════════════
   USE CASES
══════════════════════════════════════ */
#usecases .section-header {
  margin-bottom: 48px;
}
#usecases .section-header h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
}

.usecases-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-l);
}
.usecase-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-l);
  padding: var(--space-xxl) var(--space-xl);
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
}
.usecase-icon {
  width: 36px;
  height: 36px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--fg-tertiary);
}
.usecase-label {
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--brand-accent);
}
.usecase-title {
  font-size: var(--type-title-lg-size);
  font-weight: 500;
  letter-spacing: var(--type-title-lg-tracking);
  color: var(--fg-primary);
}
.usecase-desc {
  font-size: var(--type-body-md-size);
  line-height: var(--type-body-md-lh);
  color: var(--fg-secondary);
}

/* ══════════════════════════════════════
   PLATFORMS
══════════════════════════════════════ */
#platforms .section-header {
  margin-bottom: 56px;
}
#platforms .section-header h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
}

.platforms-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-l);
}
.platform-card {
  background: var(--surface);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-xl);
  padding: var(--space-xxxl) var(--space-xxl);
  display: flex;
  flex-direction: column;
  gap: var(--space-l);
}
.platform-card-icon {
  width: 48px;
  height: 48px;
  border-radius: var(--radius-m);
  background: rgba(79,203,181,0.08);
  border: 1px solid rgba(79,203,181,0.18);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-accent);
}
.platform-name {
  font-size: var(--type-headline-sm-size);
  font-weight: 600;
  letter-spacing: var(--type-headline-sm-tracking);
  color: var(--fg-primary);
}
.platform-desc {
  font-size: var(--type-body-md-size);
  line-height: var(--type-body-md-lh);
  color: var(--fg-secondary);
  flex: 1;
}

/* ══════════════════════════════════════
   WAITLIST
══════════════════════════════════════ */
#waitlist {
  background: var(--surface);
}
#waitlist .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}
.waitlist-copy h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
}
.waitlist-copy h2 span { color: var(--brand-accent); }
.waitlist-copy p {
  margin-top: var(--space-l);
  color: var(--fg-secondary);
  max-width: 400px;
  line-height: 1.75;
}

.waitlist-form-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-m);
}
.waitlist-form-wrap label {
  font-size: var(--type-label-lg-size);
  font-weight: 500;
  color: var(--fg-secondary);
  letter-spacing: var(--type-label-lg-tracking);
}
.waitlist-row {
  display: flex;
  gap: var(--space-s);
}
.waitlist-input {
  flex: 1;
  background: var(--surface-variant);
  border: 1px solid var(--hairline);
  border-radius: var(--radius-pill);
  padding: 14px var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--type-body-lg-size);
  color: var(--fg-primary);
  outline: none;
  transition: border-color var(--motion-short) var(--ease-standard);
}
.waitlist-input::placeholder { color: var(--fg-dim); }
.waitlist-input:focus { border-color: var(--brand-accent); }
.waitlist-status {
  font-size: var(--type-body-md-size);
  color: var(--status-live);
  min-height: 21px;
}

/* ══════════════════════════════════════
   ABOUT
══════════════════════════════════════ */
#about .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: start;
}
#about h2 {
  font-size: var(--type-display-md-size);
  line-height: var(--type-display-md-lh);
  letter-spacing: var(--type-display-md-tracking);
  font-weight: 600;
  margin-top: var(--space-m);
  margin-bottom: var(--space-xl);
}
#about p {
  color: var(--fg-secondary);
  line-height: 1.75;
  margin-bottom: var(--space-l);
}
#about .about-links {
  display: flex;
  gap: var(--space-m);
  margin-top: var(--space-xl);
  flex-wrap: wrap;
}
.about-brand {
  display: flex;
  align-items: center;
  gap: var(--space-l);
}
.about-lockup-icon {
  width: 72px;
  height: 72px;
  border-radius: var(--radius-m);
  flex-shrink: 0;
  overflow: hidden;
  border: 1px solid var(--hairline);
}
.about-lockup-icon img { width: 100%; height: 100%; object-fit: cover; }
.about-lockup-text .wm {
  font-family: var(--font-display);
  font-size: 32px;
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
}
.about-lockup-text .wm span { color: var(--brand-accent); }
.about-lockup-text .gradient-bar {
  width: 48px;
  height: 2px;
  background: var(--brand-grad);
  border-radius: 1px;
  margin-block: var(--space-xxs) var(--space-xs);
}
.about-lockup-text .wm-tagline {
  font-size: 15px;
  color: var(--brand-accent);
}

/* ══════════════════════════════════════
   FOOTER
══════════════════════════════════════ */
#site-footer {
  border-top: 1px solid var(--hairline);
  padding-block: var(--space-xxxl);
}
.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-xl);
}
.footer-left {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}
.footer-wm {
  font-family: var(--font-display);
  font-size: var(--type-title-lg-size);
  font-weight: 600;
  letter-spacing: -0.03em;
  color: var(--fg-primary);
}
.footer-wm span { color: var(--brand-accent); }
.footer-copy {
  font-size: var(--type-body-md-size);
  color: var(--fg-tertiary);
}
.footer-links {
  display: flex;
  align-items: center;
  gap: var(--space-xxl);
  flex-wrap: wrap;
}
.footer-links a {
  font-size: var(--type-body-md-size);
  color: var(--fg-tertiary);
  transition: color var(--motion-short) var(--ease-standard);
}
.footer-links a:hover { color: var(--fg-secondary); }

/* ══════════════════════════════════════
   RESPONSIVE
══════════════════════════════════════ */

/* 1024 */
@media (max-width: 1024px) {
  .container { padding-inline: var(--space-xxl); }
  .hero-wordmark { font-size: 60px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: repeat(3, 1fr); }
  #problem .container { gap: 48px; }
  #about .container { gap: 48px; }
  #waitlist .container { gap: 48px; }
}

/* 768 */
@media (max-width: 768px) {
  section { padding-block: 72px; }
  .container { padding-inline: var(--space-xl); }

  .nav-links { display: none; }
  .nav-menu-btn { display: flex; }

  #hero {
    flex-direction: column;
    min-height: auto;
  }
  .hero-left {
    max-width: 100%;
    padding: 64px var(--space-xl) 48px;
    background: none;
  }
  .hero-wordmark { font-size: 52px; }
  .hero-tagline { font-size: 22px; }
  .hero-right {
    min-height: 400px;
    flex: none;
  }

  #problem .container { grid-template-columns: 1fr; gap: 48px; }
  .features-grid { grid-template-columns: repeat(2, 1fr); }
  .usecases-grid { grid-template-columns: repeat(2, 1fr); }
  .platforms-grid { grid-template-columns: 1fr; }
  #waitlist .container { grid-template-columns: 1fr; gap: 40px; }
  .waitlist-row { flex-direction: column; }
  #about .container { grid-template-columns: 1fr; gap: 40px; }
  .footer-inner { flex-direction: column; align-items: flex-start; }
}

/* 375 */
@media (max-width: 480px) {
  .hero-wordmark { font-size: 44px; }
  .hero-tagline { font-size: 20px; }
  .hero-platform-list { flex-direction: column; align-items: flex-start; }
  .features-grid { grid-template-columns: 1fr; }
  .usecases-grid { grid-template-columns: 1fr; }
  .problem-copy h2 { font-size: 24px; }
  .phone-mockup { width: 220px; height: 440px; }
  .phone-bubble-1 { font-size: 10px; }
  .phone-bubble-2 { font-size: 10px; }
}