/* VA1 PDF microsite — pdf.va1.io
   Deep blue / indigo · mobile-first · dark mode · no tracking */

:root {
  --blue-50: #eff6ff;
  --blue-100: #dbeafe;
  --blue-500: #3b82f6;
  --blue-600: #2563eb;
  --blue-700: #1d4ed8;
  --blue-800: #1e40af;
  --blue-900: #1e3a8a;
  --indigo-900: #312e81;
  --slate-50: #f8fafc;
  --slate-100: #f1f5f9;
  --slate-200: #e2e8f0;
  --slate-300: #cbd5e1;
  --slate-500: #64748b;
  --slate-600: #475569;
  --slate-700: #334155;
  --slate-800: #1e293b;
  --slate-900: #0f172a;
  --white: #ffffff;
  --success: #16a34a;
  --radius: 16px;
  --radius-sm: 10px;
  --shadow: 0 4px 24px rgba(15, 23, 42, 0.08);
  --shadow-lg: 0 20px 50px rgba(37, 99, 235, 0.12);
  --max: 1100px;
  --font: system-ui, -apple-system, "Segoe UI", Roboto, "Helvetica Neue", Arial, sans-serif;

  --bg: var(--slate-50);
  --bg-elevated: var(--white);
  --text: var(--slate-900);
  --text-muted: var(--slate-600);
  --border: var(--slate-200);
  --hero-from: var(--blue-700);
  --hero-to: var(--indigo-900);
  --card-hover: var(--blue-50);
  --badge-bg: rgba(255, 255, 255, 0.14);
  --focus: 0 0 0 3px rgba(37, 99, 235, 0.35);
}

@media (prefers-color-scheme: dark) {
  :root {
    --bg: #0b1220;
    --bg-elevated: #141c2e;
    --text: #f1f5f9;
    --text-muted: #94a3b8;
    --border: #243049;
    --shadow: 0 4px 24px rgba(0, 0, 0, 0.35);
    --shadow-lg: 0 20px 50px rgba(0, 0, 0, 0.4);
    --card-hover: #1a2438;
    --badge-bg: rgba(255, 255, 255, 0.1);
  }
}

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

html {
  scroll-behavior: smooth;
}

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

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

a {
  color: var(--blue-600);
  text-decoration-thickness: 1px;
  text-underline-offset: 3px;
}

a:hover {
  color: var(--blue-700);
}

a:focus-visible,
button:focus-visible {
  outline: none;
  box-shadow: var(--focus);
  border-radius: 4px;
}

.container {
  width: min(100% - 2rem, var(--max));
  margin-inline: auto;
}

/* —— Header —— */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  backdrop-filter: blur(12px);
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.85rem 0;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  color: inherit;
  text-decoration: none;
  font-weight: 700;
  font-size: 1.05rem;
  letter-spacing: -0.02em;
}

.brand img {
  width: 36px;
  height: 36px;
  border-radius: 9px;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem 1.25rem;
  flex-wrap: wrap;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
  font-weight: 500;
}

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

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--blue-600);
  color: var(--white) !important;
  padding: 0.5rem 0.95rem;
  border-radius: 999px;
  font-weight: 600 !important;
  font-size: 0.9rem !important;
  text-decoration: none !important;
  box-shadow: 0 2px 10px rgba(37, 99, 235, 0.35);
}

.nav-cta:hover {
  background: var(--blue-700);
  color: var(--white) !important;
}

/* —— Hero —— */
.hero {
  position: relative;
  overflow: hidden;
  background: linear-gradient(145deg, var(--hero-from) 0%, var(--hero-to) 100%);
  color: var(--white);
  padding: 4rem 0 5rem;
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  background:
    radial-gradient(ellipse 80% 60% at 80% 20%, rgba(56, 189, 248, 0.25), transparent 55%),
    radial-gradient(ellipse 50% 40% at 10% 90%, rgba(99, 102, 241, 0.3), transparent 50%);
  pointer-events: none;
}

.hero-inner {
  position: relative;
  display: grid;
  gap: 2.5rem;
  align-items: center;
}

@media (min-width: 860px) {
  .hero-inner {
    grid-template-columns: 1.2fr 0.8fr;
    gap: 3rem;
  }
}

.hero-kicker {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  opacity: 0.9;
  margin-bottom: 0.75rem;
}

.hero h1 {
  margin: 0 0 1rem;
  font-size: clamp(2.1rem, 5vw, 3.15rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  font-weight: 800;
}

.hero-lead {
  margin: 0 0 1.75rem;
  font-size: 1.15rem;
  line-height: 1.55;
  max-width: 34rem;
  opacity: 0.92;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-bottom: 1.75rem;
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  padding: 0.9rem 1.35rem;
  border-radius: 12px;
  font-weight: 650;
  font-size: 1rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.15s ease, box-shadow 0.15s ease, background 0.15s ease;
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-play {
  background: var(--white);
  color: var(--blue-800);
  box-shadow: 0 8px 28px rgba(0, 0, 0, 0.18);
}

.btn-play:hover {
  color: var(--blue-900);
  background: #f8fafc;
}

.btn-ghost {
  background: transparent;
  color: var(--white);
  border: 1.5px solid rgba(255, 255, 255, 0.4);
}

.btn-ghost:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--white);
}

.trust-row {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.trust-badge {
  background: var(--badge-bg);
  border: 1px solid rgba(255, 255, 255, 0.18);
  color: var(--white);
  padding: 0.35rem 0.75rem;
  border-radius: 999px;
  font-size: 0.85rem;
  font-weight: 600;
}

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

.phone-card {
  background: rgba(255, 255, 255, 0.1);
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 28px;
  padding: 1.5rem 1.25rem 1.75rem;
  backdrop-filter: blur(8px);
  box-shadow: var(--shadow-lg);
  text-align: center;
  width: min(100%, 280px);
}

.phone-card img {
  width: 120px;
  height: 120px;
  margin: 0 auto 1rem;
  border-radius: 28px;
  box-shadow: 0 12px 32px rgba(0, 0, 0, 0.25);
}

.phone-card strong {
  display: block;
  font-size: 1.2rem;
  margin-bottom: 0.25rem;
}

.phone-card span {
  opacity: 0.85;
  font-size: 0.95rem;
}

/* —— Sections —— */
section {
  padding: 4rem 0;
}

.section-head {
  text-align: center;
  max-width: 36rem;
  margin: 0 auto 2.5rem;
}

.section-head h2 {
  margin: 0 0 0.65rem;
  font-size: clamp(1.6rem, 3.5vw, 2.1rem);
  letter-spacing: -0.02em;
  line-height: 1.2;
}

.section-head p {
  margin: 0;
  color: var(--text-muted);
}

/* Features */
.features-grid {
  display: grid;
  gap: 1rem;
  grid-template-columns: 1fr;
}

@media (min-width: 560px) {
  .features-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (min-width: 900px) {
  .features-grid {
    grid-template-columns: 1fr 1fr 1fr 1fr;
  }
}

.feature-card {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.2rem;
  box-shadow: var(--shadow);
  transition: background 0.15s ease, border-color 0.15s ease;
}

.feature-card:hover {
  background: var(--card-hover);
  border-color: color-mix(in srgb, var(--blue-600) 35%, var(--border));
}

.feature-icon {
  width: 42px;
  height: 42px;
  border-radius: 12px;
  display: grid;
  place-items: center;
  background: var(--blue-100);
  color: var(--blue-700);
  font-size: 1.2rem;
  margin-bottom: 0.85rem;
}

@media (prefers-color-scheme: dark) {
  .feature-icon {
    background: rgba(37, 99, 235, 0.2);
    color: #93c5fd;
  }
}

.feature-card h3 {
  margin: 0 0 0.4rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.feature-card p {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.5;
}

/* Privacy trust */
.trust-block {
  background: linear-gradient(180deg, color-mix(in srgb, var(--blue-600) 8%, var(--bg)), var(--bg));
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.trust-list {
  display: grid;
  gap: 0.85rem;
  max-width: 40rem;
  margin: 0 auto 1.5rem;
  padding: 0;
  list-style: none;
}

.trust-list li {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
  box-shadow: var(--shadow);
}

.trust-list .check {
  flex-shrink: 0;
  width: 1.4rem;
  height: 1.4rem;
  border-radius: 50%;
  background: color-mix(in srgb, var(--success) 18%, transparent);
  color: var(--success);
  display: grid;
  place-items: center;
  font-size: 0.75rem;
  font-weight: 800;
  margin-top: 0.1rem;
}

.center {
  text-align: center;
}

/* Data safety */
.safety-grid {
  display: grid;
  gap: 0.85rem;
}

@media (min-width: 640px) {
  .safety-grid {
    grid-template-columns: 1fr 1fr;
  }
}

.safety-item {
  background: var(--bg-elevated);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem 1.15rem;
}

.safety-item dt {
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: 0.25rem;
  color: var(--blue-700);
}

@media (prefers-color-scheme: dark) {
  .safety-item dt {
    color: #93c5fd;
  }
}

.safety-item dd {
  margin: 0;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.note {
  margin-top: 1.25rem;
  padding: 1rem 1.15rem;
  border-radius: var(--radius-sm);
  background: color-mix(in srgb, var(--blue-600) 8%, var(--bg-elevated));
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* CTA band */
.cta-band {
  text-align: center;
  padding: 3.5rem 0;
}

.cta-band .panel {
  background: linear-gradient(145deg, var(--blue-700), var(--indigo-900));
  color: var(--white);
  border-radius: calc(var(--radius) + 4px);
  padding: 2.5rem 1.5rem;
  box-shadow: var(--shadow-lg);
}

.cta-band h2 {
  margin: 0 0 0.5rem;
  font-size: clamp(1.4rem, 3vw, 1.85rem);
}

.cta-band p {
  margin: 0 0 1.5rem;
  opacity: 0.9;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0 2.5rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem 2rem;
  justify-content: space-between;
  align-items: flex-start;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem 1.25rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.footer-links a {
  color: var(--text-muted);
  text-decoration: none;
  font-weight: 500;
}

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

.footer-note {
  margin: 0.75rem 0 0;
  font-size: 0.9rem;
}

/* Privacy page */
.page-hero {
  background: linear-gradient(145deg, var(--hero-from), var(--hero-to));
  color: var(--white);
  padding: 2.75rem 0 2.5rem;
}

.page-hero h1 {
  margin: 0 0 0.4rem;
  font-size: clamp(1.75rem, 4vw, 2.35rem);
  letter-spacing: -0.02em;
}

.page-hero p {
  margin: 0;
  opacity: 0.9;
}

.prose {
  max-width: 42rem;
  margin: 0 auto;
  padding: 2.5rem 0 4rem;
}

.prose h2 {
  margin: 2rem 0 0.65rem;
  font-size: 1.25rem;
  letter-spacing: -0.01em;
}

.prose h2:first-child {
  margin-top: 0;
}

.prose p,
.prose li {
  color: var(--text-muted);
}

.prose ul {
  padding-left: 1.2rem;
}

.prose li {
  margin-bottom: 0.4rem;
}

.updated {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
}

.table-wrap {
  overflow-x: auto;
  margin: 1rem 0 1.25rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  background: var(--bg-elevated);
}

.policy-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.95rem;
}

.policy-table th,
.policy-table td {
  text-align: left;
  padding: 0.85rem 1rem;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.policy-table th {
  background: color-mix(in srgb, var(--blue-600) 10%, var(--bg-elevated));
  color: var(--text);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.policy-table tr:last-child td {
  border-bottom: none;
}

.policy-table td:first-child {
  font-weight: 600;
  color: var(--text);
  white-space: nowrap;
}

.compliance-box {
  margin-top: 2rem;
  padding: 1.15rem 1.25rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: color-mix(in srgb, var(--blue-600) 8%, var(--bg-elevated));
}

.compliance-box p {
  margin: 0 0 0.5rem;
  color: var(--text);
}

.compliance-box ul {
  margin: 0;
}

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

.play-icon {
  width: 22px;
  height: 22px;
  flex-shrink: 0;
}

@media (max-width: 520px) {
  .nav-links .hide-sm {
    display: none;
  }
}