/* ============================================================
   QRLY — style.css
   Design tokens → base → layout → components → utilities
   ============================================================ */

/* ── Tokens ─────────────────────────────────────────────── */
:root {
  /* Accent — electric cyan/blue */
  --clr-accent:        oklch(62% 0.22 220);
  --clr-accent-hover:  oklch(55% 0.22 220);
  --clr-accent-light:  oklch(96% 0.04 220);
  --clr-accent-glow:   oklch(62% 0.22 220 / 0.15);

  /* Neutrals */
  --clr-bg:            oklch(98.5% 0 0);
  --clr-surface:       oklch(100% 0 0);
  --clr-surface-raised:oklch(97% 0.002 220);
  --clr-border:        oklch(90% 0.003 220);
  --clr-text:          oklch(14% 0.01 240);
  --clr-text-muted:    oklch(48% 0.01 240);
  --clr-text-subtle:   oklch(65% 0.008 240);

  /* Dark section */
  --clr-dark-bg:       oklch(12% 0.015 240);
  --clr-dark-surface:  oklch(17% 0.015 240);
  --clr-dark-border:   oklch(25% 0.015 240);
  --clr-dark-text:     oklch(96% 0 0);
  --clr-dark-muted:    oklch(72% 0.008 240);

  /* Typography */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
               "Helvetica Neue", Arial, sans-serif;
  --font-mono: "SF Mono", "Cascadia Code", "Fira Code", monospace;

  /* Type scale (fluid via clamp) */
  --text-xs:   clamp(0.75rem,  1.5vw, 0.8125rem);
  --text-sm:   clamp(0.875rem, 1.8vw, 0.9375rem);
  --text-base: clamp(1rem,     2vw,   1.0625rem);
  --text-lg:   clamp(1.125rem, 2.2vw, 1.25rem);
  --text-xl:   clamp(1.25rem,  2.5vw, 1.5rem);
  --text-2xl:  clamp(1.5rem,   3vw,   2rem);
  --text-3xl:  clamp(2rem,     4vw,   2.75rem);
  --text-4xl:  clamp(2.5rem,   5vw,   3.5rem);
  --text-5xl:  clamp(3rem,     6vw,   4.5rem);

  /* Spacing (8-unit rhythm) */
  --sp-1:  0.25rem;
  --sp-2:  0.5rem;
  --sp-3:  0.75rem;
  --sp-4:  1rem;
  --sp-5:  1.25rem;
  --sp-6:  1.5rem;
  --sp-8:  2rem;
  --sp-10: 2.5rem;
  --sp-12: 3rem;
  --sp-16: 4rem;
  --sp-20: 5rem;
  --sp-24: 6rem;
  --sp-32: 8rem;

  /* Radii */
  --radius-sm:  6px;
  --radius-md:  12px;
  --radius-lg:  20px;
  --radius-xl:  28px;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm:  0 1px 3px oklch(0% 0 0 / 0.06), 0 1px 2px oklch(0% 0 0 / 0.04);
  --shadow-md:  0 4px 12px oklch(0% 0 0 / 0.08), 0 2px 4px oklch(0% 0 0 / 0.04);
  --shadow-lg:  0 8px 32px oklch(0% 0 0 / 0.10), 0 2px 8px oklch(0% 0 0 / 0.05);
  --shadow-accent: 0 8px 32px var(--clr-accent-glow);

  /* Transitions */
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
  --dur-fast: 120ms;
  --dur-base: 200ms;
  --dur-slow: 320ms;

  /* Layout */
  --max-width: 1200px;
  --header-h: 68px;
}

/* ── Reset ───────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  overflow-x: hidden;
}

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--clr-text);
  background: var(--clr-bg);
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
ul, ol { list-style: none; }
button { cursor: pointer; font: inherit; border: none; background: none; }
h1,h2,h3,h4 { line-height: 1.2; font-weight: 700; letter-spacing: -0.02em; }

/* ── Focus ───────────────────────────────────────────────── */
:focus-visible {
  outline: 2.5px solid var(--clr-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

/* ── Container ───────────────────────────────────────────── */
.container {
  width: min(100%, var(--max-width));
  margin-inline: auto;
  padding-inline: clamp(var(--sp-4), 5vw, var(--sp-16));
}

/* ── Buttons ─────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-3) var(--sp-6);
  border-radius: var(--radius-full);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.01em;
  transition: background var(--dur-base) var(--ease),
              color var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease),
              transform var(--dur-fast) var(--ease);
  white-space: nowrap;
  min-height: 44px;
}

.btn--primary {
  background: var(--clr-accent);
  color: white;
  box-shadow: var(--shadow-accent);
}
.btn--primary:hover {
  background: var(--clr-accent-hover);
  box-shadow: 0 12px 40px var(--clr-accent-glow);
  transform: translateY(-1px);
}
.btn--primary:active { transform: translateY(0); }

.btn--ghost {
  background: transparent;
  color: var(--clr-text);
  border: 1.5px solid var(--clr-border);
}
.btn--ghost:hover {
  border-color: var(--clr-accent);
  color: var(--clr-accent);
  background: var(--clr-accent-light);
}

.btn--large {
  padding: var(--sp-4) var(--sp-10);
  font-size: var(--text-base);
  min-height: 52px;
}

/* ── Section shared ──────────────────────────────────────── */
section { padding-block: var(--sp-24); }

.section-header {
  text-align: center;
  max-width: 640px;
  margin-inline: auto;
  margin-bottom: var(--sp-16);
}

.section-title {
  font-size: var(--text-3xl);
  margin-bottom: var(--sp-4);
  color: var(--clr-text);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--clr-text-muted);
  line-height: 1.6;
}

/* ── Fade-in animation ───────────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity var(--dur-slow) var(--ease),
              transform var(--dur-slow) var(--ease);
}
.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ============================================================
   HEADER
   ============================================================ */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  background: oklch(100% 0 0 / 0.85);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease);
}

.site-header.scrolled {
  border-color: var(--clr-border);
  box-shadow: var(--shadow-sm);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-8);
  width: 100%;
}

/* Logo */
.logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex-shrink: 0;
}
.logo-icon { flex-shrink: 0; }
.logo-text {
  font-size: var(--text-xl);
  font-weight: 800;
  letter-spacing: -0.04em;
  color: var(--clr-text);
}

/* Nav */
.main-nav { display: flex; align-items: center; }
.nav-list {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
}
.nav-link {
  padding: var(--sp-2) var(--sp-4);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--clr-text-muted);
  border-radius: var(--radius-full);
  transition: color var(--dur-fast) var(--ease),
              background var(--dur-fast) var(--ease);
  min-height: 36px;
  display: flex;
  align-items: center;
}
.nav-link:hover { color: var(--clr-text); background: var(--clr-surface-raised); }
.nav-link--cta {
  background: var(--clr-accent);
  color: white;
  padding: var(--sp-2) var(--sp-5);
  font-weight: 600;
}
.nav-link--cta:hover {
  background: var(--clr-accent-hover);
  color: white;
}

/* Hamburger */
.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: var(--sp-3);
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast) var(--ease);
}
.hamburger:hover { background: var(--clr-surface-raised); }
.hamburger-bar {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--clr-text);
  border-radius: 2px;
  transition: transform var(--dur-base) var(--ease),
              opacity var(--dur-base) var(--ease);
  transform-origin: center;
}
.hamburger[aria-expanded="true"] .hamburger-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.hamburger[aria-expanded="true"] .hamburger-bar:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}
.hamburger[aria-expanded="true"] .hamburger-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   HERO
   ============================================================ */
.hero {
  padding-block: clamp(var(--sp-16), 10vw, var(--sp-32));
  background: linear-gradient(180deg,
    oklch(97.5% 0.006 220) 0%,
    var(--clr-bg) 100%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1fr auto;
  gap: var(--sp-16);
  align-items: center;
}

.hero-content { max-width: 600px; }

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-1) var(--sp-4);
  background: var(--clr-accent-light);
  color: var(--clr-accent);
  font-size: var(--text-xs);
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  border-radius: var(--radius-full);
  border: 1px solid oklch(62% 0.22 220 / 0.2);
  margin-bottom: var(--sp-6);
}

.hero-heading {
  font-size: var(--text-5xl);
  line-height: 1.08;
  letter-spacing: -0.035em;
  margin-bottom: var(--sp-6);
  color: var(--clr-text);
}

.hero-description {
  font-size: var(--text-xl);
  color: var(--clr-text-muted);
  line-height: 1.6;
  margin-bottom: var(--sp-10);
  max-width: 480px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  align-items: center;
}

/* QR Illustration */
.hero-visual {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-4);
}

.qr-illustration {
  position: relative;
}

.qr-svg {
  filter: drop-shadow(0 16px 48px oklch(62% 0.22 220 / 0.18));
}

.qr-label {
  font-size: var(--text-xs);
  color: var(--clr-text-subtle);
  text-align: center;
}

/* ============================================================
   FEATURES
   ============================================================ */
.features { background: var(--clr-bg); }

.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--sp-6);
}

.feature-card {
  padding: var(--sp-8);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: box-shadow var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease),
              transform var(--dur-base) var(--ease);
}

.feature-card:hover {
  box-shadow: var(--shadow-md);
  border-color: oklch(62% 0.22 220 / 0.3);
  transform: translateY(-2px);
}

.feature-icon {
  width: 52px;
  height: 52px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--clr-accent-light);
  border-radius: var(--radius-md);
  margin-bottom: var(--sp-5);
}

.feature-title {
  font-size: var(--text-lg);
  font-weight: 700;
  margin-bottom: var(--sp-2);
  color: var(--clr-text);
}

.feature-description {
  font-size: var(--text-sm);
  color: var(--clr-text-muted);
  line-height: 1.65;
}

/* ============================================================
   QR TYPES
   ============================================================ */
.qr-types { background: var(--clr-surface-raised); }

.types-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(140px, 1fr));
  gap: var(--sp-4);
}

.type-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-5) var(--sp-4);
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-sm);
  text-align: center;
  transition: box-shadow var(--dur-base) var(--ease),
              border-color var(--dur-base) var(--ease),
              transform var(--dur-base) var(--ease);
}

.type-card:hover {
  box-shadow: var(--shadow-md);
  border-color: oklch(62% 0.22 220 / 0.35);
  transform: translateY(-2px);
}

.type-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  background: var(--clr-accent-light);
  border-radius: var(--radius-sm);
  color: var(--clr-accent);
  flex-shrink: 0;
}

.type-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-text);
}

/* ============================================================
   PRIVACY
   ============================================================ */
.privacy {
  background: var(--clr-dark-bg);
  color: var(--clr-dark-text);
}

.privacy-inner {
  text-align: center;
  max-width: 720px;
  margin-inline: auto;
}

.privacy .section-title { color: var(--clr-dark-text); }

.privacy-description {
  font-size: var(--text-lg);
  color: var(--clr-dark-muted);
  line-height: 1.7;
  margin-block: var(--sp-6) var(--sp-12);
}

.privacy-items {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--sp-4);
}

.privacy-item {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  padding: var(--sp-4) var(--sp-6);
  background: var(--clr-dark-surface);
  border: 1px solid var(--clr-dark-border);
  border-radius: var(--radius-full);
}

.privacy-emoji { font-size: 1.2rem; line-height: 1; }

.privacy-label {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--clr-dark-text);
}

/* ============================================================
   APP PREVIEW
   ============================================================ */
.app-preview { background: var(--clr-bg); overflow: hidden; }

.screenshots-row {
  display: flex;
  justify-content: center;
  align-items: flex-end;
  gap: clamp(var(--sp-4), 3vw, var(--sp-8));
  padding-block: var(--sp-8);
}

/* Phone frame */
.phone-frame {
  position: relative;
  width: clamp(130px, 18vw, 180px);
  background: var(--clr-dark-bg);
  border-radius: 36px;
  padding: 12px;
  box-shadow:
    0 0 0 1px oklch(40% 0 0 / 0.6),
    0 24px 64px oklch(0% 0 0 / 0.25),
    inset 0 1px 0 oklch(100% 0 0 / 0.08);
  transform: scale(0.96);
  transition: transform var(--dur-base) var(--ease),
              box-shadow var(--dur-base) var(--ease);
}

.phone-frame--featured {
  transform: scale(1.06);
  z-index: 2;
  box-shadow:
    0 0 0 1px oklch(40% 0 0 / 0.6),
    0 32px 80px oklch(0% 0 0 / 0.30),
    0 0 0 3px var(--clr-accent),
    inset 0 1px 0 oklch(100% 0 0 / 0.08);
}

.phone-frame:hover { transform: scale(1.02); }
.phone-frame--featured:hover { transform: scale(1.08); }

.phone-notch {
  width: 60px;
  height: 10px;
  background: oklch(20% 0 0);
  border-radius: var(--radius-full);
  margin-inline: auto;
  margin-bottom: 8px;
}

.phone-screen {
  aspect-ratio: 9 / 19;
  background: var(--clr-surface-raised);
  border-radius: 24px;
  overflow: hidden;
  position: relative;
}

.phone-screenshot {
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: top;
}

.screenshot-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--sp-3);
  background: var(--clr-accent-light);
  color: var(--clr-accent);
  font-size: var(--text-xs);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.06em;
}

/* ============================================================
   DOWNLOAD
   ============================================================ */
.download {
  background: linear-gradient(135deg,
    oklch(62% 0.22 220) 0%,
    oklch(55% 0.22 230) 100%);
  color: white;
  text-align: center;
}

.download-inner {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-6);
}

.download-title {
  font-size: var(--text-4xl);
  color: white;
  letter-spacing: -0.035em;
}

.download-description {
  font-size: var(--text-xl);
  color: oklch(100% 0 0 / 0.8);
  max-width: 480px;
  line-height: 1.6;
}

.download .btn--primary {
  background: white;
  color: var(--clr-accent);
  box-shadow: 0 8px 32px oklch(0% 0 0 / 0.2);
}
.download .btn--primary:hover {
  background: oklch(97% 0.01 220);
  box-shadow: 0 12px 48px oklch(0% 0 0 / 0.25);
}

.download-note {
  font-size: var(--text-sm);
  color: oklch(100% 0 0 / 0.65);
}

/* ============================================================
   FAQ
   ============================================================ */
.faq { background: var(--clr-bg); }

.faq-list {
  max-width: 720px;
  margin-inline: auto;
  display: flex;
  flex-direction: column;
  gap: var(--sp-3);
}

.faq-item {
  background: var(--clr-surface);
  border: 1px solid var(--clr-border);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: border-color var(--dur-base) var(--ease);
}

.faq-item:has(.faq-question[aria-expanded="true"]) {
  border-color: oklch(62% 0.22 220 / 0.4);
}

.faq-question {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-5) var(--sp-6);
  text-align: left;
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--clr-text);
  transition: background var(--dur-fast) var(--ease),
              color var(--dur-fast) var(--ease);
  min-height: 56px;
}

.faq-question:hover { background: var(--clr-surface-raised); }

.faq-question[aria-expanded="true"] { color: var(--clr-accent); }

.faq-chevron {
  flex-shrink: 0;
  transition: transform var(--dur-base) var(--ease);
  color: var(--clr-text-subtle);
}
.faq-question[aria-expanded="true"] .faq-chevron {
  transform: rotate(180deg);
  color: var(--clr-accent);
}

.faq-answer {
  overflow: hidden;
  /* height managed by JS for animation */
}
.faq-answer p {
  padding: 0 var(--sp-6) var(--sp-5);
  color: var(--clr-text-muted);
  font-size: var(--text-sm);
  line-height: 1.7;
}

/* ============================================================
   FOOTER
   ============================================================ */
.site-footer {
  background: var(--clr-dark-bg);
  padding-block: var(--sp-12) var(--sp-8);
  color: var(--clr-dark-text);
}

.footer-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--sp-6);
  padding-bottom: var(--sp-8);
  border-bottom: 1px solid var(--clr-dark-border);
  margin-bottom: var(--sp-6);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
}

.footer-tagline {
  font-size: var(--text-sm);
  color: var(--clr-dark-muted);
  letter-spacing: 0.05em;
}

.footer-brand .logo-text { color: var(--clr-dark-text); }

.footer-nav {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2) var(--sp-6);
  align-items: center;
}

.footer-link {
  font-size: var(--text-sm);
  color: var(--clr-dark-muted);
  transition: color var(--dur-fast) var(--ease);
  padding-block: var(--sp-1);
}
.footer-link:hover { color: var(--clr-dark-text); }

.footer-bottom { text-align: center; }

.footer-copy {
  font-size: var(--text-xs);
  color: oklch(45% 0 0);
}

/* ============================================================
   RESPONSIVE — TABLET  (≤ 900px)
   ============================================================ */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero-content { max-width: 100%; }
  .hero-description { max-width: 100%; }
  .hero-actions { justify-content: center; }
  .badge { margin-inline: auto; }

  .hero-visual { order: -1; }
  .qr-svg { width: 180px; height: 180px; }

  .features-grid { grid-template-columns: repeat(2, 1fr); }

  .screenshots-row { gap: var(--sp-4); }
  .phone-frame { width: clamp(110px, 15vw, 150px); }
}

/* ============================================================
   RESPONSIVE — MOBILE  (≤ 640px)
   ============================================================ */
@media (max-width: 640px) {
  :root { --header-h: 60px; }

  section { padding-block: var(--sp-16); }

  /* Header */
  .hamburger { display: flex; }

  .main-nav {
    position: fixed;
    inset: var(--header-h) 0 0 0;
    background: oklch(100% 0 0 / 0.97);
    backdrop-filter: blur(20px);
    -webkit-backdrop-filter: blur(20px);
    flex-direction: column;
    justify-content: flex-start;
    padding: var(--sp-6) var(--sp-5);
    transform: translateX(100%);
    transition: transform var(--dur-slow) var(--ease);
    border-top: 1px solid var(--clr-border);
    z-index: 99;
  }

  .main-nav.open { transform: translateX(0); }

  .nav-list {
    flex-direction: column;
    align-items: stretch;
    gap: var(--sp-2);
    width: 100%;
  }

  .nav-link {
    padding: var(--sp-4) var(--sp-4);
    font-size: var(--text-base);
    border-radius: var(--radius-md);
    justify-content: flex-start;
    color: var(--clr-text);
  }

  .nav-link--cta {
    margin-top: var(--sp-3);
    justify-content: center;
    padding: var(--sp-4);
  }

  /* Hero */
  .hero { padding-block: var(--sp-16) var(--sp-12); }
  .hero-inner { gap: var(--sp-10); }
  .hero-heading { font-size: clamp(2.2rem, 9vw, 3rem); }
  .hero-actions { flex-direction: column; align-items: center; gap: var(--sp-3); }
  .btn { width: 100%; justify-content: center; }
  .qr-svg { width: 160px; height: 160px; }

  /* Features */
  .features-grid { grid-template-columns: 1fr; gap: var(--sp-4); }
  .feature-card { padding: var(--sp-6); }

  /* QR Types */
  .types-grid { grid-template-columns: repeat(2, 1fr); gap: var(--sp-3); }

  /* Privacy */
  .privacy-items { flex-direction: column; align-items: center; gap: var(--sp-3); }
  .privacy-item { width: 100%; max-width: 280px; justify-content: center; }

  /* Screenshots */
  .screenshots-row {
    overflow-x: auto;
    justify-content: flex-start;
    padding-inline: var(--sp-4);
    padding-bottom: var(--sp-4);
    gap: var(--sp-4);
    scrollbar-width: none;
    -ms-overflow-style: none;
  }
  .screenshots-row::-webkit-scrollbar { display: none; }
  .phone-frame { width: 130px; flex-shrink: 0; }
  .phone-frame--featured { transform: scale(1.0); }
  .phone-frame--featured:hover { transform: scale(1.02); }

  /* Download */
  .download-title { font-size: var(--text-3xl); }
  .download .btn { width: auto; max-width: 320px; }

  /* FAQ */
  .faq-question { padding: var(--sp-4) var(--sp-5); font-size: var(--text-sm); }
  .faq-answer p { padding: 0 var(--sp-5) var(--sp-4); }

  /* Footer */
  .footer-top { flex-direction: column; align-items: flex-start; gap: var(--sp-5); }
  .footer-nav { gap: var(--sp-2) var(--sp-4); }

  /* Section header */
  .section-title { font-size: var(--text-2xl); }
  .section-subtitle { font-size: var(--text-base); }
}

/* ============================================================
   RESPONSIVE — SMALL MOBILE (≤ 375px)
   ============================================================ */
@media (max-width: 375px) {
  .types-grid { grid-template-columns: repeat(2, 1fr); }
  .hero-heading { font-size: clamp(1.9rem, 8vw, 2.2rem); }
}

/* ============================================================
   RESPONSIVE — 4K / WIDE (≥ 1600px)
   ============================================================ */
@media (min-width: 1600px) {
  :root { --max-width: 1400px; }
  .features-grid { grid-template-columns: repeat(3, 1fr); gap: var(--sp-8); }
  .types-grid { grid-template-columns: repeat(7, 1fr); }
}

/* ============================================================
   REDUCED MOTION
   ============================================================ */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }
  .fade-in { opacity: 1; transform: none; }
  .qr-svg { animation: none !important; }
}