/* ── Design tokens ─────────────────────────────────────────────── */
:root {
  --bg: #0d1117;
  --bg-alt: #161b22;
  --bg-card: #1c2333;
  --accent: #7eb8f7;
  --accent-dark: #4a90d9;
  --accent-glow: rgba(126, 184, 247, 0.15);
  --highlight: #58a6ff;
  --text: #e6edf3;
  --text-muted: #8b949e;
  --border: rgba(255, 255, 255, 0.08);
  --radius: 12px;
  --radius-lg: 20px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.4);
  --shadow-accent: 0 0 40px rgba(126, 184, 247, 0.12);
}

/* ── Resets ────────────────────────────────────────────────────── */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}
html {
  scroll-behavior: smooth;
  font-size: 16px;
}
html,
body {
  overflow-x: hidden;
  max-width: 100%;
}
body {
  font-family: "Inter", system-ui, sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}
img {
  max-width: 100%;
  display: block;
}
a {
  color: inherit;
  text-decoration: none;
}
button {
  cursor: pointer;
  border: none;
  background: none;
  font-family: inherit;
}
ul {
  list-style: none;
}

/* ── Typography ────────────────────────────────────────────────── */
h1,
h2,
h3,
h4 {
  font-family: "Syne", sans-serif;
  line-height: 1.2;
  font-weight: 700;
}
h1 {
  font-size: clamp(2rem, 5vw, 3.5rem);
}
h2 {
  font-size: clamp(1.75rem, 4vw, 2.8rem);
}
h3 {
  font-size: 1.2rem;
  font-weight: 600;
}

/* ── Layout ────────────────────────────────────────────────────── */
.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}
section {
  padding: 96px 0;
}

/* ── Utility ───────────────────────────────────────────────────── */
.accent {
  color: var(--accent);
}
.section-eyebrow {
  display: block;
  text-align: center;
  text-transform: uppercase;
  letter-spacing: 3px;
  font-size: 0.75rem;
  color: var(--accent);
  font-weight: 600;
  margin-bottom: 12px;
}
.section-title {
  text-align: center;
  margin-bottom: 16px;
}
.section-sub {
  text-align: center;
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto 48px;
  font-size: 1.05rem;
}

/* ── Buttons ───────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: 50px;
  font-weight: 600;
  font-size: 0.95rem;
  transition: all 0.2s ease;
  white-space: nowrap;
}
.btn-primary {
  background: var(--accent);
  color: #0d1117;
}
.btn-primary:hover {
  background: #a8d4ff;
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(126, 184, 247, 0.35);
}
.btn-ghost {
  border: 1.5px solid var(--border);
  color: var(--text-muted);
  background: transparent;
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  transform: translateY(-2px);
}
.btn-accent {
  background: var(--accent-dark);
  color: #ffffff;
  padding: 10px 22px;
  font-size: 0.9rem;
}
.btn-accent:hover {
  background: var(--accent);
  color: #fff;
}
.btn-lg {
  padding: 16px 36px;
  font-size: 1.05rem;
}
.btn-full {
  width: 100%;
}
.btn:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none !important;
}

/* ── Scroll reveal ─────────────────────────────────────────────── */
.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition:
    opacity 0.55s ease,
    transform 0.55s ease;
}
.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── NAV ───────────────────────────────────────────────────────── */
#nav {
  position: sticky;
  top: 0;
  z-index: 100;
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  background: rgba(13, 17, 23, 0.92);
  border-bottom: 1px solid var(--border);
  /* needed so the absolute dropdown is positioned relative to the nav bar */
  isolation: isolate;
}
.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
  height: 64px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 32px;
}
.logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: "Syne", sans-serif;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  flex-shrink: 0;
}
.logo-img {
  width: 170px;
  height: 120px;
  object-fit: contain;
  flex-shrink: 0;
}
.nav-links {
  display: flex;
  align-items: center;
  gap: 32px;
}
.nav-links a {
  color: var(--text-muted);
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}
.nav-links a:hover {
  color: var(--text);
}
.nav-links a.btn-accent,
.nav-links a.btn-accent:hover {
  color: #ffffff;
}
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 8px;
  border-radius: 8px;
  transition: background 0.2s;
}
.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition:
    transform 0.3s,
    opacity 0.3s;
}
.nav-toggle[aria-expanded="true"] span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle[aria-expanded="true"] span:nth-child(2) {
  opacity: 0;
}
.nav-toggle[aria-expanded="true"] span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* ── HERO ──────────────────────────────────────────────────────── */
#hero {
  padding: 80px 0 100px;
  background: radial-gradient(
    ellipse 80% 60% at 50% 0%,
    rgba(126, 184, 247, 0.08) 0%,
    transparent 60%
  );
}
#hero .container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}
.badge {
  display: inline-block;
  background: rgba(126, 184, 247, 0.1);
  border: 1px solid rgba(126, 184, 247, 0.25);
  color: var(--accent);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 6px 16px;
  border-radius: 50px;
  margin-bottom: 20px;
}
.hero-content h1 {
  margin-bottom: 20px;
}
.hero-sub {
  font-size: 1.1rem;
  color: var(--text-muted);
  margin-bottom: 32px;
  line-height: 1.7;
}
.hero-ctas {
  display: flex;
  gap: 16px;
  flex-wrap: wrap;
  margin-bottom: 20px;
}
.hero-note {
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0.7;
}

/* Browser frame mockup */
.browser-frame {
  border-radius: var(--radius-lg);
  background: var(--bg-card);
  border: 1px solid var(--border);
  box-shadow: var(--shadow), var(--shadow-accent);
  overflow: hidden;
  animation: float 4s ease-in-out infinite;
}
@keyframes float {
  0%,
  100% {
    transform: translateY(0);
  }
  50% {
    transform: translateY(-10px);
  }
}
.browser-bar {
  background: var(--bg-alt);
  padding: 12px 16px;
  display: flex;
  align-items: center;
  gap: 12px;
  border-bottom: 1px solid var(--border);
}
.browser-dots {
  display: flex;
  gap: 6px;
}
.browser-dots span {
  width: 10px;
  height: 10px;
  border-radius: 50%;
  background: var(--border);
}
.browser-dots span:nth-child(1) {
  background: #ff5f56;
}
.browser-dots span:nth-child(2) {
  background: #ffbd2e;
}
.browser-dots span:nth-child(3) {
  background: #27c93f;
}
.browser-url {
  flex: 1;
  background: rgba(255, 255, 255, 0.05);
  border-radius: 6px;
  padding: 5px 12px;
  font-size: 0.78rem;
  color: var(--text-muted);
  font-family: monospace;
}
.browser-content {
  padding: 20px;
}
.mock-nav {
  height: 32px;
  background: linear-gradient(90deg, var(--bg-alt) 60%, transparent);
  border-radius: 6px;
  margin-bottom: 20px;
  animation: pulse 2.5s ease-in-out infinite;
}
.mock-hero {
  background: linear-gradient(135deg, var(--bg-alt), rgba(126, 184, 247, 0.08));
  border-radius: var(--radius);
  padding: 32px 24px;
  margin-bottom: 20px;
}
.mock-h1 {
  height: 20px;
  background: rgba(255, 255, 255, 0.12);
  border-radius: 4px;
  margin-bottom: 10px;
  width: 80%;
}
.mock-h2 {
  height: 14px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 4px;
  margin-bottom: 18px;
  width: 60%;
}
.mock-btn {
  height: 28px;
  width: 120px;
  background: var(--accent);
  border-radius: 50px;
  opacity: 0.7;
}
.mock-cards {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 10px;
}
.mock-card {
  height: 60px;
  background: var(--bg-alt);
  border-radius: var(--radius);
  border: 1px solid var(--border);
}
@keyframes pulse {
  0%,
  100% {
    opacity: 0.5;
  }
  50% {
    opacity: 1;
  }
}

/* ── PROBLEM ───────────────────────────────────────────────────── */
#problem {
  background: var(--bg-alt);
  padding: 80px 0;
}
.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-bottom: 40px;
}
.stat-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 36px 28px;
  text-align: center;
  transition:
    border-color 0.25s,
    box-shadow 0.25s;
}
.stat-card:hover {
  border-color: rgba(126, 184, 247, 0.3);
  box-shadow: var(--shadow-accent);
}
.stat-number {
  display: block;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  margin-bottom: 12px;
  letter-spacing: -1px;
}
.stat-label {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* ── HOW IT WORKS ──────────────────────────────────────────────── */
#how-it-works {
  background: var(--bg);
}
.steps {
  display: grid;
  grid-template-columns: 1fr auto 1fr auto 1fr;
  align-items: start;
  margin-top: 56px;
}
.step {
  text-align: center;
  padding: 0 16px;
}
.step-number {
  font-family: "Syne", sans-serif;
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 2px;
  color: var(--accent);
  margin-bottom: 12px;
  text-transform: uppercase;
}
.step-icon {
  font-size: 2.5rem;
  margin-bottom: 16px;
}
.step h3 {
  margin-bottom: 10px;
}
.step p {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}
.step-connector {
  width: 60px;
  height: 2px;
  background: linear-gradient(
    90deg,
    var(--border),
    var(--accent),
    var(--border)
  );
  margin-top: 60px;
  flex-shrink: 0;
}

/* ── FEATURES ──────────────────────────────────────────────────── */
#features {
  background: var(--bg-alt);
}
.features-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 56px;
}
.feature-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px 28px;
  transition:
    border-color 0.25s,
    transform 0.25s,
    box-shadow 0.25s;
}
.feature-card:hover {
  border-color: rgba(126, 184, 247, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}
.feature-icon {
  display: block;
  font-size: 2rem;
  margin-bottom: 16px;
}
.feature-card h3 {
  margin-bottom: 8px;
}
.feature-card p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── DEMO ──────────────────────────────────────────────────────── */
#demo {
  background: var(--bg);
}
.demo-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
  margin-top: 48px;
}
.demo-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  transition:
    border-color 0.25s,
    transform 0.25s,
    box-shadow 0.25s;
  display: block;
}
.demo-card:hover {
  border-color: rgba(126, 184, 247, 0.4);
  transform: translateY(-4px);
  box-shadow: var(--shadow-accent);
}
.demo-screenshot {
  height: 180px;
  background: linear-gradient(135deg, var(--bg-alt), rgba(126, 184, 247, 0.06));
  display: flex;
  align-items: center;
  justify-content: center;
  border-bottom: 1px solid var(--border);
}
.demo-placeholder {
  text-align: center;
}
.demo-placeholder span {
  font-size: 2.5rem;
  display: block;
  margin-bottom: 8px;
}
.demo-placeholder p {
  font-size: 0.85rem;
  color: var(--text-muted);
}
.demo-info {
  padding: 16px 20px;
  display: flex;
  justify-content: space-between;
  align-items: center;
}
.demo-info strong {
  font-size: 0.95rem;
}
.demo-info span {
  font-size: 0.8rem;
  color: var(--text-muted);
}

/* ── TRUST ─────────────────────────────────────────────────────── */
#trust {
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 60%, #0f3460 100%);
  padding: 80px 0;
}
.trust-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 32px;
  text-align: center;
}
.trust-number {
  display: inline;
  font-family: "Inter", system-ui, sans-serif;
  font-size: 3rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  letter-spacing: -1px;
}
.trust-suffix {
  font-family: "Inter", system-ui, sans-serif;
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent);
  letter-spacing: -1px;
}
.trust-label {
  display: block;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.55);
  margin-top: 8px;
}

/* ── FAQ ───────────────────────────────────────────────────────── */
#faq {
  background: var(--bg-alt);
}
.faq-list {
  max-width: 720px;
  margin: 48px auto 0;
}
.faq-item {
  border-bottom: 1px solid var(--border);
}
.faq-question {
  width: 100%;
  padding: 22px 0;
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  color: var(--text);
  font-size: 1rem;
  font-weight: 500;
  text-align: left;
  transition: color 0.2s;
}
.faq-question:hover {
  color: var(--accent);
}
.faq-icon {
  font-size: 1.5rem;
  color: var(--accent);
  flex-shrink: 0;
  transition: transform 0.3s;
  font-weight: 300;
  line-height: 1;
}
.faq-question[aria-expanded="true"] .faq-icon {
  transform: rotate(45deg);
}
.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition:
    max-height 0.35s ease,
    padding 0.35s ease;
}
.faq-answer.open {
  max-height: 240px;
  padding-bottom: 20px;
}
.faq-answer p {
  color: var(--text-muted);
  line-height: 1.7;
  font-size: 0.95rem;
}

/* ── CTA FORM ──────────────────────────────────────────────────── */
#claim {
  background: var(--bg);
  position: relative;
}
#claim::before {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(
    ellipse 70% 50% at 50% 100%,
    rgba(126, 184, 247, 0.05) 0%,
    transparent 70%
  );
  pointer-events: none;
}
.form-wrapper {
  max-width: 640px;
  margin: 0 auto;
  position: relative;
}
.claim-form {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 40px 36px;
  margin-top: 40px;
}
.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}
.form-group {
  display: flex;
  flex-direction: column;
  gap: 8px;
}
.form-group-full {
  grid-column: 1 / -1;
}
.form-group label {
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
}
.optional {
  font-weight: 400;
  text-transform: none;
  letter-spacing: 0;
  font-size: 0.78rem;
}
.form-group input {
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 16px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  outline: none;
}
.form-group textarea {
  background: var(--bg-alt);
  border: 1.5px solid var(--border);
  border-radius: var(--radius);
  padding: 13px 16px;
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  resize: vertical;
  min-height: 110px;
  transition:
    border-color 0.2s,
    box-shadow 0.2s;
  outline: none;
}
.form-group input::placeholder {
  color: var(--text-muted);
  opacity: 0.5;
}
.form-group textarea::placeholder {
  color: var(--text-muted);
  opacity: 0.5;
}
.form-group input:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(126, 184, 247, 0.12);
}
.form-group textarea:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px rgba(126, 184, 247, 0.12);
}
.form-group input.error {
  border-color: #f85149;
  box-shadow: 0 0 0 3px rgba(248, 81, 73, 0.1);
}
.form-group textarea.error {
  border-color: #f85149;
  box-shadow: 0 0 0 3px rgba(248, 81, 73, 0.1);
}
.claim-form .btn-primary {
  margin-top: 8px;
}
.form-success,
.form-error {
  margin-top: 20px;
  display: flex;
  align-items: flex-start;
  gap: 12px;
  padding: 16px 20px;
  border-radius: var(--radius);
  font-size: 0.9rem;
}
.form-success[hidden],
.form-error[hidden] {
  display: none !important;
}
.form-success {
  background: rgba(63, 185, 80, 0.08);
  border: 1px solid rgba(63, 185, 80, 0.25);
  color: #3fb950;
}
.form-error {
  background: rgba(248, 81, 73, 0.08);
  border: 1px solid rgba(248, 81, 73, 0.25);
  color: #f85149;
}

/* ── FOOTER ────────────────────────────────────────────────────── */
#footer {
  padding: 56px 0 32px;
  background: var(--bg-alt);
  border-top: 1px solid var(--border);
}
.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 48px;
  margin-bottom: 40px;
}
.footer-brand p {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 12px;
  max-width: 280px;
  line-height: 1.6;
}
.footer-links {
  display: flex;
  gap: 32px;
  flex-wrap: wrap;
  align-items: center;
}
.footer-links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color 0.2s;
}
.footer-links a:hover {
  color: var(--accent);
}
.footer-bottom {
  border-top: 1px solid var(--border);
  padding-top: 24px;
  text-align: center;
}
.footer-bottom p {
  font-size: 0.8rem;
  color: var(--text-muted);
  opacity: 0.6;
}

/* ── Responsive ────────────────────────────────────────────────── */
@media (max-width: 768px) {
  section {
    padding: 64px 0;
  }

  #nav-backdrop {
    display: block;
    position: fixed;
    inset: 64px 0 0;
    z-index: 99;
    backdrop-filter: blur(0px);
    -webkit-backdrop-filter: blur(0px);
    background: rgba(0, 0, 0, 0);
    opacity: 0;
    visibility: hidden;
    transition:
      opacity 0.3s ease,
      backdrop-filter 0.3s ease,
      visibility 0.3s ease;
  }
  #nav-backdrop.active {
    opacity: 1;
    visibility: visible;
    backdrop-filter: blur(5px);
    -webkit-backdrop-filter: blur(5px);
    background: rgba(0, 0, 0, 0.35);
  }

  /* Nav */
  .nav-toggle {
    display: flex;
  }
  .nav-links {
    display: flex;
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: rgba(13, 17, 23, 0.98);
    flex-direction: column;
    align-items: center;
    gap: 0;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--border);
    box-shadow: 0 12px 40px rgba(0, 0, 0, 0.5);
    /* hidden state */
    opacity: 0;
    visibility: hidden;
    transform: translateY(-10px);
    transition:
      opacity 0.28s ease,
      transform 0.28s ease,
      visibility 0.28s ease;
  }
  .nav-links.open {
    opacity: 1;
    visibility: visible;
    transform: translateY(0);
  }
  .nav-links li {
    width: 100%;
  }
  .nav-links li a {
    display: block;
    padding: 18px 24px;
    border-bottom: 1px solid var(--border);
    text-align: center;
  }
  .nav-links li:last-child {
    text-align: center;
    border-bottom: none;
  }
  .nav-links li:last-child a {
    border-bottom: none;
  }
  .nav-links li:last-child a.btn-accent {
    margin: 16px auto;
    width: auto;
    display: inline-block;
    padding: 8px 20px;
    font-size: 0.85rem;
    border-radius: 50px;
  }

  /* Hero */
  #hero .container {
    grid-template-columns: 1fr;
  }
  .hero-visual {
    display: none;
  }
  .hero-ctas {
    flex-direction: column;
  }
  .hero-ctas .btn {
    width: 100%;
    justify-content: center;
  }

  /* Grids → 1 col */
  .stats-grid {
    grid-template-columns: 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
  .demo-grid {
    grid-template-columns: 1fr;
  }
  .trust-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 24px;
  }

  /* Steps → vertical */
  .steps {
    grid-template-columns: 1fr;
    gap: 40px;
  }
  .step-connector {
    display: none;
  }

  /* Form */
  .form-row {
    grid-template-columns: 1fr;
  }
  .claim-form {
    padding: 28px 20px;
  }

  /* Footer */
  .footer-inner {
    flex-direction: column;
    gap: 32px;
  }
  .footer-links {
    gap: 20px;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.8rem;
  }
  h2 {
    font-size: 1.5rem;
  }
  .trust-number {
    font-size: 2.2rem;
  }
  .trust-suffix {
    font-size: 1.8rem;
  }
  .trust-grid {
    grid-template-columns: 1fr 1fr;
  }
  .features-grid {
    grid-template-columns: 1fr;
  }
}