/* ===== Variables ===== */
:root {
  --color-bg: #0c0f14;
  --color-bg-soft: #141922;
  --color-surface: #1a1f28;
  --color-text: #e8eaed;
  --color-text-muted: #9ca3af;
  --color-accent: #f59e0b;
  --color-accent-hover: #fbbf24;
  --color-border: rgba(255, 255, 255, 0.08);
  --font-heading: "Fraunces", Georgia, serif;
  --font-body: "DM Sans", system-ui, sans-serif;
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2.5rem;
  --space-xl: 4rem;
  --space-2xl: 6rem;
  --radius: 12px;
  --radius-lg: 20px;
  --transition: 0.2s ease;
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
}

/* ===== Header ===== */
.site-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-md) var(--space-lg);
  position: sticky;
  top: 0;
  z-index: 10;
  background: rgba(12, 15, 20, 0.85);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
}

.logo {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.5rem;
  color: var(--color-text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

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

.nav {
  display: flex;
  gap: var(--space-lg);
}

.nav a {
  color: var(--color-text-muted);
  text-decoration: none;
  font-weight: 500;
  font-size: 0.9375rem;
  transition: color var(--transition);
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.875rem 1.75rem;
  font-family: var(--font-body);
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border: none;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition), transform var(--transition);
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
}

/* ===== Hero ===== */
.hero {
  padding: var(--space-2xl) var(--space-lg) var(--space-xl);
  max-width: 42rem;
  margin: 0 auto;
  text-align: center;
}

.hero-kicker {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.12em;
  color: var(--color-accent);
  margin: 0 0 var(--space-md);
}

.hero-title {
  font-family: var(--font-heading);
  font-size: clamp(2.5rem, 6vw, 3.75rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 0 0 var(--space-md);
}

.hero-sub {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  max-width: 36ch;
  margin-left: auto;
  margin-right: auto;
}

.hero .btn-primary {
  margin-top: var(--space-sm);
}

/* ===== Problem section ===== */
.problem {
  padding: var(--space-xl) var(--space-lg);
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}

.problem-inner {
  max-width: 38rem;
  margin: 0 auto;
  text-align: center;
}

.section-label {
  font-size: 0.8125rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-sm);
}

.problem-text {
  font-size: 1.125rem;
  color: var(--color-text-muted);
  margin: 0;
  font-style: italic;
}

/* ===== Story ===== */
.story {
  padding: var(--space-xl) var(--space-lg);
  border-top: 1px solid var(--color-border);
}

.story-inner {
  max-width: 40rem;
  margin: 0 auto;
}

.story .section-label {
  text-align: center;
  margin-bottom: var(--space-md);
}

.story-content {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-lg);
}

.story-content p {
  margin: 0 0 var(--space-md);
  font-size: 1.0625rem;
  color: var(--color-text-muted);
  line-height: 1.65;
}

.story-content p:last-child {
  margin-bottom: 0;
  color: var(--color-text);
  font-weight: 500;
}

/* ===== Solution / How it works ===== */
.solution {
  padding: var(--space-2xl) var(--space-lg);
  max-width: 56rem;
  margin: 0 auto;
}

.section-title {
  font-family: var(--font-heading);
  font-size: clamp(1.75rem, 4vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  margin: 0 0 var(--space-sm);
  text-align: center;
}

.section-sub {
  text-align: center;
  color: var(--color-text-muted);
  margin: 0 0 var(--space-xl);
  font-size: 1.0625rem;
}

.pillars {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: var(--space-md);
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.pillar {
  padding: var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.pillar:hover {
  border-color: rgba(245, 158, 11, 0.25);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.2);
}

.pillar-highlight {
  border-color: rgba(245, 158, 11, 0.35);
}

.pillar-icon {
  display: inline-block;
  width: 2rem;
  height: 2rem;
  line-height: 2rem;
  text-align: center;
  font-size: 1.25rem;
  color: var(--color-accent);
  margin-bottom: var(--space-sm);
}

.pillar h3 {
  font-family: var(--font-heading);
  font-size: 1.25rem;
  font-weight: 600;
  margin: 0 0 var(--space-xs);
}

.pillar p {
  margin: 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  line-height: 1.55;
}

.pillar p em {
  color: var(--color-text-muted);
  font-size: 0.875rem;
}

/* ===== Coming soon ===== */
.coming-soon {
  padding: var(--space-2xl) var(--space-lg);
  background: var(--color-bg-soft);
  border-top: 1px solid var(--color-border);
}

.coming-soon-inner {
  max-width: 32rem;
  margin: 0 auto;
  text-align: center;
}

.coming-soon .section-title {
  margin-bottom: var(--space-sm);
}

.coming-soon-text {
  color: var(--color-text-muted);
  margin: 0 0 var(--space-lg);
  font-size: 1.0625rem;
}

.coming-soon-text strong {
  color: var(--color-text);
}

.waitlist-form {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.waitlist-form input {
  flex: 1;
  min-width: 200px;
  padding: 0.875rem 1.25rem;
  font-family: var(--font-body);
  font-size: 1rem;
  color: var(--color-text);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition);
}

.waitlist-form input::placeholder {
  color: var(--color-text-muted);
}

.waitlist-form input:focus {
  border-color: var(--color-accent);
}

.waitlist-message {
  margin: var(--space-sm) 0 0;
  font-size: 0.9375rem;
  color: var(--color-text-muted);
  width: 100%;
  text-align: center;
}

.waitlist-message--error {
  color: #f87171;
}

.app-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
}

.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.5rem 1rem;
  font-size: 0.875rem;
  color: var(--color-text-muted);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
}

.badge-coming {
  opacity: 0.85;
}

/* ===== Footer ===== */
.site-footer {
  padding: var(--space-lg);
  text-align: center;
  border-top: 1px solid var(--color-border);
}

.site-footer p {
  margin: 0;
  font-size: 0.8125rem;
  color: var(--color-text-muted);
}

/* ===== Responsive ===== */
@media (max-width: 640px) {
  .site-header {
    padding: var(--space-sm) var(--space-md);
  }

  .nav {
    gap: var(--space-md);
  }

  .hero {
    padding: var(--space-xl) var(--space-md) var(--space-lg);
  }

  .waitlist-form {
    flex-direction: column;
  }

  .waitlist-form input {
    min-width: 100%;
  }

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