/* ==========================================================================
   Evliwa — styles.css
   ========================================================================== */

:root {
  --color-primary: #7c3aed;
  --color-primary-dark: #6425d0;
  --color-primary-light: #a855f7;
  --color-primary-50: #f5f3ff;
  --color-primary-100: #ede9fe;
  --color-bg: #ffffff;
  --color-bg-soft: #faf9ff;
  --color-text: #1f1533;
  --color-text-muted: #5f5674;
  --color-border: #e6e1f5;
  --color-success: #16a34a;

  --shadow-sm: 0 1px 2px rgba(31, 21, 51, 0.06);
  --shadow-md: 0 8px 24px rgba(76, 29, 149, 0.10);
  --shadow-lg: 0 20px 48px rgba(76, 29, 149, 0.16);

  --radius-sm: 10px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-pill: 999px;

  --container-width: 1140px;
  --header-height: 72px;

  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
}

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

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

body {
  margin: 0;
  font-family: var(--font-sans);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

a {
  color: inherit;
  text-decoration: none;
}

ul {
  margin: 0;
  padding: 0;
  list-style: none;
}

h1, h2, h3, h4, p {
  margin: 0;
}

button {
  font-family: inherit;
  cursor: pointer;
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }
  *,
  *::before,
  *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* ---------- Layout helpers ---------- */
.container {
  width: 100%;
  max-width: var(--container-width);
  margin: 0 auto;
  padding: 0 24px;
}

.section {
  padding: 88px 0;
}

.section-header {
  max-width: 640px;
  margin: 0 auto 56px;
  text-align: center;
}

.eyebrow {
  display: inline-block;
  color: var(--color-primary);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 14px;
}

.section-header h2 {
  font-size: clamp(1.75rem, 3vw, 2.4rem);
  margin-bottom: 14px;
}

.section-header p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
}

.section-alt {
  background: var(--color-bg-soft);
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.skip-link {
  position: absolute;
  top: -48px;
  left: 16px;
  background: var(--color-primary);
  color: #fff;
  padding: 10px 18px;
  border-radius: var(--radius-sm);
  z-index: 200;
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: 16px;
}

/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 14px 26px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 1rem;
  border: 2px solid transparent;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), background var(--transition-fast), border-color var(--transition-fast);
  white-space: nowrap;
}

.btn:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  box-shadow: var(--shadow-md);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: #fff;
  color: var(--color-primary);
  border-color: var(--color-border);
}

.btn-secondary:hover {
  border-color: var(--color-primary-light);
  background: var(--color-primary-50);
}

.btn-block {
  width: 100%;
}

.btn-lg {
  padding: 16px 32px;
  font-size: 1.05rem;
}

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  border-bottom: 1px solid var(--color-border);
}

/* Frosted-glass background lives on a decorative pseudo-element rather than
   .site-header itself: backdrop-filter on a real ancestor of .nav would create
   a new containing block for position:fixed descendants (the mobile nav panel),
   shrinking it to the header's own box instead of the viewport. */
.site-header::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: -1;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: saturate(180%) blur(10px);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: var(--header-height);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--color-text);
  letter-spacing: -0.02em;
}

.logo-mark {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  color: #fff;
  font-weight: 800;
  font-size: 1.05rem;
  flex-shrink: 0;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}

.nav-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  transition: transform var(--transition-fast), opacity var(--transition-fast);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}

.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.nav {
  display: flex;
  align-items: center;
  gap: 32px;
}

/* Panel-only header (logo + close button), legal links, and link icons:
   part of the mobile full-screen overlay, not rendered in the desktop nav bar. */
.nav-panel-header,
.nav-legal,
.nav-link-icon {
  display: none;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-weight: 600;
  color: var(--color-text-muted);
  padding: 8px 2px;
  border-bottom: 2px solid transparent;
  transition: color var(--transition-fast), border-color var(--transition-fast);
}

.nav-links a:hover,
.nav-links a[aria-current="page"] {
  color: var(--color-primary);
}

.nav-links a[aria-current="page"] {
  border-bottom-color: var(--color-primary);
}

.nav-cta {
  display: flex;
  align-items: center;
}

/* ---------- Hero ---------- */
.hero {
  padding: 72px 0 96px;
  background:
    radial-gradient(60% 55% at 85% 0%, var(--color-primary-100) 0%, rgba(237, 233, 254, 0) 70%),
    radial-gradient(50% 50% at 0% 20%, #f3e8ff 0%, rgba(243, 232, 255, 0) 70%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 56px;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: var(--color-primary-50);
  color: var(--color-primary);
  border: 1px solid var(--color-primary-100);
  padding: 8px 16px;
  border-radius: var(--radius-pill);
  font-weight: 600;
  font-size: 0.85rem;
  margin-bottom: 24px;
}

.hero h1 {
  font-size: clamp(2.2rem, 4.2vw, 3.4rem);
  line-height: 1.15;
  letter-spacing: -0.02em;
  margin-bottom: 22px;
}

.hero-lead {
  font-size: 1.15rem;
  color: var(--color-text-muted);
  max-width: 540px;
  margin-bottom: 36px;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 20px;
  color: var(--color-text-muted);
  font-size: 0.92rem;
}

.hero-meta li {
  display: flex;
  align-items: center;
  gap: 8px;
}

.hero-meta li::before {
  content: "";
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-primary-light);
  flex-shrink: 0;
}

/* ---------- Device frame (real app screenshots) ---------- */
.device-frame {
  --device-w: 280px;
  position: relative;
  width: var(--device-w);
  margin: 0 auto;
  padding: 10px;
  background: linear-gradient(160deg, #241242, #4c1d95);
  border-radius: 40px;
  box-shadow: var(--shadow-lg);
  flex-shrink: 0;
}

.device-frame img {
  display: block;
  width: 100%;
  height: auto;
  aspect-ratio: 804 / 1740;
  border-radius: 30px;
  background: #fff;
}

.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
}

.hero-visual::before {
  content: "";
  position: absolute;
  /* Fixed pixel inset (not %) so the glow never grows past the section's own
     padding and triggers horizontal scroll on narrow viewports. */
  inset: -20px;
  background: radial-gradient(closest-side, rgba(124, 58, 237, 0.32), rgba(168, 85, 247, 0.1) 62%, transparent 75%);
  filter: blur(36px);
  z-index: -1;
}

.device-frame--hero {
  --device-w: 300px;
  transform: rotate(3deg);
}

.device-frame--gallery {
  --device-w: 208px;
}

.device-frame--split {
  --device-w: 260px;
}

/* ---------- Screenshot gallery ("Evliwa'yı yakından görün") ---------- */
.screenshot-gallery {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 32px;
  align-items: end;
}

.screenshot-gallery-item {
  text-align: center;
}

.screenshot-gallery-item .device-frame {
  margin-bottom: 22px;
}

.screenshot-gallery-item:nth-child(1) .device-frame {
  transform: rotate(-3deg);
}

.screenshot-gallery-item:nth-child(2) .device-frame {
  transform: translateY(-18px);
}

.screenshot-gallery-item:nth-child(3) .device-frame {
  transform: rotate(3deg);
}

.screenshot-gallery-item h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.screenshot-gallery-item p {
  color: var(--color-text-muted);
  font-size: 0.94rem;
  max-width: 240px;
  margin: 0 auto;
}

/* ---------- Split layout (screenshot + copy) ---------- */
.split-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

.split-media {
  display: flex;
  justify-content: center;
}

.split-copy .eyebrow {
  margin-bottom: 14px;
}

.split-copy h2 {
  font-size: clamp(1.5rem, 2.6vw, 2rem);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.split-copy p {
  color: var(--color-text-muted);
  font-size: 1.02rem;
  margin-bottom: 20px;
}

.split-copy ul {
  display: grid;
  gap: 12px;
}

.split-copy ul li {
  display: flex;
  gap: 10px;
  font-size: 0.96rem;
}

.split-copy ul li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

/* ---------- Feature grid ---------- */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  grid-auto-rows: max-content;
  gap: 18px;
}

.feature-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px;
  transition: transform var(--transition-base), box-shadow var(--transition-base), border-color var(--transition-base);
}

.feature-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-primary-100);
}

.feature-icon {
  width: 44px;
  height: 44px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  box-shadow: 0 6px 14px rgba(124, 58, 237, 0.28);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.4rem;
  margin-bottom: 16px;
}

.feature-card h3 {
  font-size: 1.08rem;
  margin-bottom: 8px;
}

.feature-card p {
  color: var(--color-text-muted);
  font-size: 0.93rem;
}

@media (min-width: 901px) {
  /* Center a lone card left over in the final row of a 3-column grid
     (e.g. a 7th card) instead of letting it hug the left edge. */
  .feature-grid > .feature-card:last-child:nth-child(3n + 1) {
    grid-column: 2;
  }
}

/* Detailed feature sections (features.html) */
.feature-detail {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 16px;
}

.feature-detail-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 28px;
}

.feature-detail-card .feature-icon {
  margin-bottom: 18px;
}

.feature-detail-card h3 {
  font-size: 1.3rem;
  margin-bottom: 12px;
}

.feature-detail-card p {
  color: var(--color-text-muted);
}

.feature-detail-card ul {
  margin-top: 16px;
  display: grid;
  gap: 10px;
}

.feature-detail-card ul li {
  display: flex;
  gap: 10px;
  font-size: 0.92rem;
  color: var(--color-text);
}

.feature-detail-card ul li::before {
  content: "✓";
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

/* ---------- Steps ---------- */
.steps {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  counter-reset: step;
}

.step-card {
  position: relative;
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
}

.step-number {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-light) 100%);
  color: #fff;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
}

.step-card h3 {
  font-size: 1.1rem;
  margin-bottom: 10px;
}

.step-card p {
  color: var(--color-text-muted);
  font-size: 0.95rem;
}

/* ---------- CTA band ---------- */
.cta-band {
  background: linear-gradient(135deg, #2e1065 0%, var(--color-primary) 60%, var(--color-primary-light) 100%);
  border-radius: var(--radius-lg);
  padding: 64px 48px;
  text-align: center;
  color: #fff;
  margin: 0 24px;
}

.cta-band h2 {
  font-size: clamp(1.6rem, 3vw, 2.2rem);
  margin-bottom: 16px;
}

.cta-band p {
  color: rgba(255, 255, 255, 0.85);
  max-width: 520px;
  margin: 0 auto 32px;
}

.cta-band .btn-secondary {
  background: #fff;
  color: var(--color-primary-dark);
  border-color: transparent;
}

.cta-band .btn-outline {
  color: #fff;
  border-color: rgba(255, 255, 255, 0.5);
}

.cta-band .btn-outline:hover {
  background: rgba(255, 255, 255, 0.12);
}

.cta-store-note {
  margin-top: 18px;
  font-size: 0.85rem;
  color: rgba(255, 255, 255, 0.7);
}

.cta-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 14px;
}

.page-hero {
  padding: 64px 0 56px;
  background: linear-gradient(180deg, var(--color-primary-50) 0%, rgba(245, 243, 255, 0) 100%);
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(2rem, 3.6vw, 2.8rem);
  margin-bottom: 16px;
}

.page-hero p {
  color: var(--color-text-muted);
  font-size: 1.05rem;
  max-width: 620px;
  margin: 0 auto;
}

/* ---------- Support / FAQ ---------- */
.faq-list {
  max-width: 760px;
  margin: 0 auto;
  display: grid;
  gap: 14px;
}

.faq-item {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  padding: 4px 8px;
}

.faq-item summary {
  list-style: none;
  cursor: pointer;
  padding: 18px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  font-weight: 700;
  font-size: 1rem;
}

.faq-item summary::-webkit-details-marker {
  display: none;
}

.faq-icon {
  flex-shrink: 0;
  width: 26px;
  height: 26px;
  border-radius: 50%;
  background: var(--color-primary-50);
  color: var(--color-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 800;
  transition: transform var(--transition-fast);
}

.faq-item[open] .faq-icon {
  transform: rotate(45deg);
}

.faq-item summary:focus-visible {
  outline: 3px solid var(--color-primary-light);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

.faq-answer {
  padding: 0 16px 20px 16px;
  color: var(--color-text-muted);
}

.faq-answer p + p {
  margin-top: 10px;
}

/* ---------- Legal pages ---------- */
.legal-content {
  max-width: 780px;
  margin: 0 auto;
}

.legal-updated {
  color: var(--color-text-muted);
  font-size: 0.9rem;
  margin-bottom: 40px;
}

.legal-content h2 {
  font-size: 1.35rem;
  margin: 44px 0 14px;
  letter-spacing: -0.01em;
}

.legal-content h2:first-of-type {
  margin-top: 0;
}

.legal-content p {
  color: var(--color-text-muted);
  margin-bottom: 14px;
}

.legal-content ul {
  display: grid;
  gap: 10px;
  margin: 14px 0 20px;
  padding-left: 4px;
}

.legal-content ul li {
  color: var(--color-text-muted);
  display: flex;
  gap: 10px;
  padding-left: 0;
}

.legal-content ul li::before {
  content: "•";
  color: var(--color-primary);
  font-weight: 800;
  flex-shrink: 0;
}

.legal-toc {
  background: var(--color-bg-soft);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 24px 28px;
  margin-bottom: 44px;
}

.legal-toc h2 {
  font-size: 1rem;
  margin: 0 0 14px;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--color-text-muted);
}

.legal-toc ol {
  display: grid;
  gap: 8px;
  counter-reset: toc;
  padding-left: 0;
}

.legal-toc ol li {
  counter-increment: toc;
  display: flex;
  gap: 10px;
}

.legal-toc ol li::before {
  content: counter(toc) ".";
  color: var(--color-primary);
  font-weight: 700;
  flex-shrink: 0;
}

.legal-toc a {
  color: var(--color-text);
  font-weight: 600;
}

.legal-toc a:hover {
  color: var(--color-primary);
}

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.contact-card {
  background: #fff;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 32px;
}

.contact-card h3 {
  font-size: 1.1rem;
  margin-bottom: 8px;
}

.contact-card p {
  color: var(--color-text-muted);
  margin-bottom: 18px;
}

.contact-email {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  color: var(--color-primary);
  padding: 10px 18px;
  border: 1px solid var(--color-primary-100);
  background: var(--color-primary-50);
  border-radius: var(--radius-pill);
  transition: background var(--transition-fast);
}

.contact-email:hover {
  background: var(--color-primary-100);
}

/* ---------- Footer ---------- */
.site-footer {
  border-top: 1px solid var(--color-border);
  background: var(--color-bg-soft);
  padding-top: 56px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1.2fr 2fr;
  gap: 40px;
  padding-bottom: 40px;
}

.footer-brand p {
  color: var(--color-text-muted);
  margin-top: 12px;
  font-size: 0.95rem;
  max-width: 280px;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 12px 28px;
  align-content: start;
  justify-content: flex-end;
}

.footer-links a {
  color: var(--color-text-muted);
  font-weight: 600;
  font-size: 0.95rem;
  transition: color var(--transition-fast);
}

.footer-links a:hover {
  color: var(--color-primary);
}

.footer-bottom {
  border-top: 1px solid var(--color-border);
  padding: 20px 24px;
  text-align: center;
  color: var(--color-text-muted);
  font-size: 0.85rem;
}

/* ---------- Scroll reveal ---------- */
.reveal {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 600ms ease, transform 600ms ease;
}

.reveal.is-visible {
  opacity: 1;
  transform: translateY(0);
}

@media (prefers-reduced-motion: reduce) {
  .reveal {
    opacity: 1;
    transform: none;
    transition: none;
  }
}

/* ---------- Responsive ---------- */
@media (max-width: 900px) {
  .hero-inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero-lead {
    margin-left: auto;
    margin-right: auto;
  }

  .hero-actions,
  .hero-meta {
    justify-content: center;
  }

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

  .screenshot-gallery {
    grid-template-columns: repeat(2, 1fr);
    row-gap: 48px;
  }

  .screenshot-gallery-item:nth-child(3) {
    grid-column: 1 / -1;
    max-width: 260px;
    margin: 0 auto;
  }

  .split-row {
    grid-template-columns: 1fr;
    gap: 40px;
    text-align: center;
  }

  .split-copy ul li {
    text-align: left;
  }

  .contact-grid {
    grid-template-columns: 1fr;
  }

  .footer-inner {
    grid-template-columns: 1fr;
  }

  .footer-links {
    justify-content: flex-start;
  }
}

@media (max-width: 720px) {
  .nav-toggle {
    display: flex;
  }

  /* Full-screen overlay. Closed by default (hidden + slightly offset);
     .is-open animates in; .is-closing plays the reverse transition before
     script.js actually removes it from view / navigates. See script.js
     for the opening/open/closing state machine driving these classes. */
  .nav {
    position: fixed;
    inset: 0;
    z-index: 110;
    display: flex;
    flex-direction: column;
    width: 100%;
    height: 100dvh;
    background: var(--color-bg-soft);
    padding: calc(16px + env(safe-area-inset-top)) calc(20px + env(safe-area-inset-right)) calc(20px + env(safe-area-inset-bottom)) calc(20px + env(safe-area-inset-left));
    overflow-y: auto;
    overscroll-behavior: contain;
    -webkit-overflow-scrolling: touch;
    /* visibility is intentionally left out of the transition list: it must
       snap instantly on each class change (hidden the moment JS finishes
       closing; visible the instant opening starts) rather than animate,
       otherwise an invisible-but-still-hit-testable overlay would linger
       and swallow taps on the page underneath after "closing" completes. */
    visibility: hidden;
    opacity: 0;
    transform: translateY(-8px);
    transition: opacity 260ms ease-out, transform 260ms ease-out;
  }

  .nav.is-open {
    visibility: visible;
    opacity: 1;
    transform: translateY(0);
    transition: opacity 260ms ease-out, transform 260ms ease-out;
  }

  .nav.is-closing {
    visibility: visible;
    opacity: 0;
    transform: translateY(-8px);
    /* Blocks re-entrant taps on links/close button while the exit
       animation plays, so a double-tap can't fire navigation twice. */
    pointer-events: none;
    transition: opacity 200ms ease-out, transform 200ms ease-out;
  }

  .nav-panel-header {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 16px;
    flex-shrink: 0;
  }

  /* Sized to visually balance the 44px close button on the opposite end —
     a small logo next to a full-size close button reads as an oversized
     close button by contrast, even though the button itself hasn't grown. */
  .nav-panel-logo {
    flex-shrink: 1;
    min-width: 0;
    gap: 10px;
    font-size: 1.75rem;
    overflow: hidden;
  }

  .nav-panel-logo span:last-child {
    overflow: hidden;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  .nav-panel-logo .logo-mark {
    width: 44px;
    height: 44px;
    border-radius: 13px;
    font-size: 1.25rem;
  }

  .nav-close {
    display: flex;
    align-items: center;
    justify-content: center;
    flex-shrink: 0;
    width: 44px;
    height: 44px;
    padding: 0;
    background: #fff;
    color: var(--color-text);
    border: 1px solid var(--color-border);
    border-radius: 13px;
    box-shadow: none;
    appearance: none;
  }

  .nav-close svg {
    width: 19px;
    height: 19px;
  }

  .nav-close:focus-visible {
    outline: 2px solid var(--color-primary);
    outline-offset: 2px;
  }

  .nav-links {
    flex-shrink: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 8px;
    margin: 56px 0 0;
  }

  /* No underlines/dividers on mobile nav links — the desktop border-bottom
     underline treatment is intentionally overridden here. Active/hover
     state is communicated with color + background only, and the anchor is
     stretched to full row width so the highlight isn't a text-hugging box. */
  .nav-links a {
    display: flex;
    align-items: center;
    width: 100%;
    min-height: 54px;
    padding: 10px 14px;
    gap: 14px;
    font-size: 1.6rem;
    line-height: 1.25;
    font-weight: 600;
    border-bottom: none;
    text-decoration: none;
    border-radius: 14px;
    transition: color var(--transition-fast), background-color var(--transition-fast);
  }

  .nav-links a::before,
  .nav-links a::after {
    display: none;
  }

  .nav-links a:hover,
  .nav-links a:focus-visible {
    background: var(--color-primary-50);
  }

  .nav-links a[aria-current="page"] {
    border-bottom: none;
    color: var(--color-primary);
    background: var(--color-primary-50);
    font-weight: 700;
  }

  .nav-link-icon {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 22px;
    height: 22px;
    flex-shrink: 0;
  }

  .nav-link-icon svg {
    width: 22px;
    height: 22px;
  }

  .nav-cta {
    flex-shrink: 0;
    margin-top: 32px;
    display: flex;
    justify-content: center;
  }

  .nav-cta .btn {
    width: 100%;
    max-width: 330px;
    min-height: 51px;
    padding: 12px 24px;
    font-size: 1.125rem;
    box-shadow: var(--shadow-sm);
  }

  .nav-legal {
    display: flex;
    flex-shrink: 0;
    justify-content: center;
    gap: 20px;
    margin-top: 40px;
    padding-top: 20px;
    border-top: 1px solid var(--color-border);
  }

  .nav-legal a {
    font-size: 0.85rem;
    font-weight: 500;
    color: var(--color-text-muted);
  }

  .nav-legal a:hover,
  .nav-legal a:focus-visible {
    color: var(--color-primary);
  }

  .section {
    padding: 64px 0;
  }

  .cta-band {
    padding: 48px 24px;
    margin: 0 16px;
  }
}

@media (max-width: 600px) {
  .feature-grid,
  .feature-detail,
  .steps {
    grid-template-columns: 1fr;
  }

  .device-frame--hero {
    --device-w: 220px;
    transform: none;
  }

  .device-frame--gallery {
    --device-w: 190px;
  }

  .screenshot-gallery-item:nth-child(1) .device-frame,
  .screenshot-gallery-item:nth-child(2) .device-frame,
  .screenshot-gallery-item:nth-child(3) .device-frame {
    transform: none;
  }

  .screenshot-gallery {
    grid-template-columns: 1fr;
    row-gap: 40px;
  }

  .screenshot-gallery-item:nth-child(3) {
    grid-column: auto;
    max-width: none;
  }

  .hero-meta {
    flex-direction: column;
    align-items: center;
  }
}