/* ── Design tokens ── */
:root {
  --bg-navy: #070f1c;
  --bg-navy-mid: #0c1829;
  --bg-card: #111f33;
  --bg-card-hover: #152640;
  --border: rgba(255, 255, 255, 0.08);
  --border-accent: rgba(45, 212, 191, 0.35);
  --text: #f1f5f9;
  --text-muted: #94a3b8;
  --accent: #2dd4bf;
  --accent-hover: #14b8a6;
  --accent-glow: rgba(45, 212, 191, 0.15);
  --radius: 12px;
  --radius-lg: 20px;
  --header-h: 72px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-h);
}

body {
  font-family: "Inter", system-ui, -apple-system, sans-serif;
  background: var(--bg-navy);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}

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

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

ul {
  list-style: none;
}

/* ── Layout ── */
.container {
  width: min(1100px, 92%);
  margin-inline: auto;
}

.section {
  padding-block: 5rem;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 1rem;
}

.section h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.5rem);
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-intro {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 52ch;
  margin-bottom: 2.5rem;
}

/* ── Header ── */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--header-h);
  background: rgba(7, 15, 28, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  font-weight: 600;
  font-size: 1.05rem;
}

.logo-icon {
  color: var(--accent);
  display: flex;
}

.site-nav {
  display: flex;
  gap: 2rem;
}

.site-nav a {
  font-size: 0.9rem;
  color: var(--text-muted);
  transition: color var(--transition);
}

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
  transition: transform var(--transition), opacity var(--transition);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 500;
  font-family: inherit;
  cursor: pointer;
  border: 1.5px solid transparent;
  transition: background var(--transition), border-color var(--transition), transform var(--transition);
}

.btn:active {
  transform: scale(0.98);
}

.btn-primary {
  background: var(--accent);
  color: var(--bg-navy);
  border-color: var(--accent);
}

.btn-primary:hover {
  background: var(--accent-hover);
  border-color: var(--accent-hover);
}

.btn-secondary {
  background: transparent;
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.3);
}

.btn-secondary:hover {
  border-color: rgba(255, 255, 255, 0.6);
  background: rgba(255, 255, 255, 0.04);
}

.btn-full {
  width: 100%;
}

/* ── Hero ── */
.hero {
  padding-top: calc(var(--header-h) + 4rem);
  padding-bottom: 5rem;
  position: relative;
  overflow: hidden;
}

.hero::before {
  content: "";
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 700px;
  height: 500px;
  background: radial-gradient(ellipse, var(--accent-glow) 0%, transparent 70%);
  pointer-events: none;
}

.hero .container {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
}

.hero-badge {
  display: inline-block;
  padding: 0.4rem 1rem;
  border: 1px solid var(--border-accent);
  border-radius: 999px;
  font-size: 0.8rem;
  color: var(--accent);
  background: rgba(45, 212, 191, 0.06);
  margin-bottom: 1.5rem;
}

.hero h1 {
  font-size: clamp(2.5rem, 6vw, 4rem);
  font-weight: 700;
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
  max-width: 18ch;
}

.hero-lead {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 58ch;
  margin-bottom: 0.75rem;
}

.hero-sub {
  font-size: 0.95rem;
  color: var(--text-muted);
  max-width: 58ch;
  margin-bottom: 2rem;
}

.hero-lead,
.hero-sub {
  margin-inline: auto;
}

.cta-group {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3rem;
}

/* Dashboard preview card */
.dashboard-preview {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  max-width: 640px;
  width: 100%;
  margin-inline: auto;
  text-align: left;
}

.dashboard-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.dashboard-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.dashboard-score {
  font-size: 0.85rem;
  color: var(--text-muted);
}

.dashboard-score strong {
  color: var(--accent);
  font-size: 1.1rem;
  margin-left: 0.25rem;
}

.dashboard-bars {
  display: flex;
  flex-direction: column;
  gap: 0.85rem;
  margin-bottom: 1.5rem;
}

.bar-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bar-row span {
  font-size: 0.8rem;
  color: var(--text-muted);
  width: 80px;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 6px;
  background: rgba(255, 255, 255, 0.08);
  border-radius: 999px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--accent), #5eead4);
  border-radius: 999px;
}

.dashboard-metrics {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
}

.metric-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 0.85rem;
}

.metric-title {
  display: block;
  font-size: 0.8rem;
  font-weight: 600;
  margin-bottom: 0.35rem;
}

.metric-desc {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.45;
}

/* ── Problem ── */
.problem {
  background: var(--bg-navy-mid);
  border-block: 1px solid var(--border);
}

.problem-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1rem;
}

.problem-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem;
  transition: border-color var(--transition), background var(--transition);
}

.problem-card:hover {
  border-color: var(--border-accent);
  background: var(--bg-card-hover);
}

.problem-card h3 {
  font-size: 0.85rem;
  font-weight: 500;
  line-height: 1.4;
  color: var(--text-muted);
}

.card-icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: rgba(45, 212, 191, 0.1);
  border-radius: 10px;
  color: var(--accent);
  margin-bottom: 0.85rem;
}

/* ── Solution ── */
.solution-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: center;
}

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

.solution-list-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.check-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.check-list li {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.5;
}

.check-list li::before {
  content: "";
  flex-shrink: 0;
  width: 20px;
  height: 20px;
  margin-top: 2px;
  background: var(--accent);
  mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath d='M16.7 5.3a1 1 0 010 1.4l-7.25 7.25a1 1 0 01-1.4 0L3.3 9.3a1 1 0 111.4-1.4l3.35 3.35 6.55-6.55a1 1 0 011.4 0z'/%3E%3C/svg%3E");
  mask-size: contain;
  -webkit-mask-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' viewBox='0 0 20 20' fill='white'%3E%3Cpath d='M16.7 5.3a1 1 0 010 1.4l-7.25 7.25a1 1 0 01-1.4 0L3.3 9.3a1 1 0 111.4-1.4l3.35 3.35 6.55-6.55a1 1 0 011.4 0z'/%3E%3C/svg%3E");
  -webkit-mask-size: contain;
}

/* ── Features ── */
.features-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.25rem;
  margin-top: 2.5rem;
}

.feature-card {
  position: relative;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  transition: border-color var(--transition), transform var(--transition);
}

.feature-card:hover {
  border-color: var(--border-accent);
  transform: translateY(-2px);
}

.feature-card h3 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--text-muted);
  line-height: 1.55;
}

.badge-soon {
  position: absolute;
  top: 1rem;
  right: 1rem;
  font-size: 0.65rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--accent);
  background: rgba(45, 212, 191, 0.12);
  border: 1px solid var(--border-accent);
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
}

/* ── Vision ── */
.vision-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(2rem, 5vw, 3.5rem);
  margin-top: 0.5rem;
}

.vision-card h2 {
  margin-bottom: 1rem;
}

.vision-card p {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 65ch;
}

/* ── Contact / Waitlist ── */
.contact-section {
  background: var(--bg-navy-mid);
  border-top: 1px solid var(--border);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-block p {
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.founder-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.founder-label {
  font-size: 0.7rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
}

.founder-name {
  font-weight: 600;
  font-size: 1rem;
}

.founder-email {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-top: 0.25rem;
  transition: color var(--transition);
}

.founder-email:hover {
  color: var(--accent);
}

.waitlist-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 2rem;
}

.waitlist-card h2 {
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
}

.waitlist-form {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.form-field > span,
.form-field > legend {
  display: block;
  font-size: 0.85rem;
  font-weight: 500;
  margin-bottom: 0.45rem;
  color: var(--text);
}

.form-field fieldset,
.form-field {
  border: none;
}

.form-field input[type="text"],
.form-field input[type="email"],
.form-field select {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-size: 0.95rem;
  font-family: inherit;
  transition: border-color var(--transition);
}

.form-field select {
  appearance: none;
  cursor: pointer;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 16 16' fill='none'%3E%3Cpath d='M4 6l4 4 4-4' stroke='%2394a3b8' stroke-width='1.5' stroke-linecap='round' stroke-linejoin='round'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 1rem center;
  padding-right: 2.5rem;
}

.form-field select option {
  background: var(--bg-card);
  color: var(--text);
}

.form-field input:focus,
.form-field select:focus {
  outline: none;
  border-color: var(--border-accent);
}

.form-field input::placeholder {
  color: rgba(148, 163, 184, 0.6);
}

.form-field select:invalid {
  color: rgba(148, 163, 184, 0.6);
}

.form-error {
  font-size: 0.85rem;
  color: #f87171;
}

.form-success {
  font-size: 0.85rem;
  color: var(--accent);
}

.form-note {
  font-size: 0.78rem;
  color: var(--text-muted);
  text-align: center;
}

/* ── Footer ── */
.site-footer {
  padding-block: 1.75rem;
  border-top: 1px solid var(--border);
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-links {
  display: flex;
  gap: 1.5rem;
}

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

/* ── Responsive ── */
@media (max-width: 1024px) {
  .problem-grid {
    grid-template-columns: repeat(3, 1fr);
  }

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

@media (max-width: 768px) {
  .section {
    padding-block: 3.5rem;
  }

  .nav-toggle {
    display: flex;
  }

  .site-nav {
    position: fixed;
    top: var(--header-h);
    left: 0;
    right: 0;
    background: var(--bg-navy-mid);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    padding: 1.5rem 2rem;
    gap: 1.25rem;
    transform: translateY(-110%);
    opacity: 0;
    pointer-events: none;
    transition: transform var(--transition), opacity var(--transition);
  }

  .site-nav.is-open {
    transform: translateY(0);
    opacity: 1;
    pointer-events: auto;
  }

  .nav-toggle.is-open span:nth-child(1) {
    transform: translateY(7px) rotate(45deg);
  }

  .nav-toggle.is-open span:nth-child(2) {
    opacity: 0;
  }

  .nav-toggle.is-open span:nth-child(3) {
    transform: translateY(-7px) rotate(-45deg);
  }

  .dashboard-metrics {
    grid-template-columns: 1fr;
  }

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

  .solution-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

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

  .cta-group {
    flex-direction: column;
  }

  .cta-group .btn {
    width: 100%;
  }

  .footer-inner {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  .problem-grid {
    grid-template-columns: 1fr;
  }
}