/* ---- Base + Theme (tuned toward your app’s likely dark/green vibe) ---- */

:root {
  --bt-bg: #050608;
  --bt-bg-alt: #0b0e12;
  --bt-card: #10141b;
  --bt-border: rgba(255, 255, 255, 0.06);
  --bt-primary: #31d26b;
  --bt-primary-soft: rgba(49, 210, 107, 0.12);
  --bt-primary-strong: #22b159;
  --bt-accent: #7cf5ff;
  --bt-text: #f5f7fb;
  --bt-text-soft: #a3aec3;
  --bt-radius: 18px;
  --bt-radius-lg: 26px;
  --bt-shadow-soft: 0 18px 40px rgba(0, 0, 0, 0.55);
  --bt-max-width: 1120px;
}

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

html, body {
  margin: 0;
  padding: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "SF Pro Text",
    "Segoe UI", sans-serif;
  background: radial-gradient(circle at top, #151927 0, #020308 55%);
  color: var(--bt-text);
}

/* Utility container */

.bt-container {
  max-width: var(--bt-max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* ---- Header / Nav ---- */

.bt-header {
  position: sticky;
  top: 0;
  z-index: 30;
  backdrop-filter: blur(18px);
  background: linear-gradient(
    to bottom,
    rgba(2, 3, 8, 0.95),
    rgba(2, 3, 8, 0.7),
    transparent
  );
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.bt-nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0.75rem 0.6rem;
}

.bt-brand {
  display: flex;
  align-items: center;
  gap: 0.55rem;
}

.bt-logo {
  width: 32px;
  height: 32px;
  border-radius: 12px;
  box-shadow: 0 0 18px rgba(49, 210, 107, 0.6);
  object-fit: cover;
}

.bt-brand-name {
  font-weight: 700;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 0.9rem;
  color: var(--bt-text);
}

.bt-nav-links {
  display: flex;
  gap: 1rem;
  font-size: 0.85rem;
}

.bt-nav-links a {
  color: var(--bt-text-soft);
  text-decoration: none;
  padding: 0.4rem 0.7rem;
  border-radius: 999px;
  transition: all 0.18s ease-out;
}

.bt-nav-links a:hover {
  color: var(--bt-text);
  background: rgba(255, 255, 255, 0.04);
}

/* ---- Hero ---- */

.bt-hero {
  padding: 2.5rem 0 3.25rem;
}

.bt-hero-inner {
  display: grid;
  grid-template-columns: minmax(0, 1.2fr) minmax(0, 0.9fr);
  gap: 2.5rem;
  align-items: center;
}

.bt-hero h1 {
  font-size: clamp(2.1rem, 3vw + 1.2rem, 3.2rem);
  line-height: 1.1;
  margin-bottom: 0.75rem;
}

.bt-highlight {
  background: linear-gradient(120deg, var(--bt-primary), var(--bt-accent));
  -webkit-background-clip: text;
  color: transparent;
}

.bt-hero-subtitle {
  color: var(--bt-text-soft);
  font-size: 0.98rem;
  max-width: 29rem;
  line-height: 1.5;
  margin-bottom: 1.25rem;
}

.bt-hero-ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 0.8rem;
  margin-bottom: 1.15rem;
}

.bt-store-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 999px;
  padding: 0.55rem 1.15rem;
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  text-decoration: none;
  border: 1px solid rgba(255, 255, 255, 0.14);
  background: radial-gradient(circle at top left, #1a222e, #05060b);
  color: var(--bt-text);
  box-shadow: var(--bt-shadow-soft);
  transition: all 0.18s ease-out;
}

.bt-store-badge:hover {
  transform: translateY(-1px) scale(1.01);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.7);
  border-color: var(--bt-primary);
}

.bt-playstore {
  background: linear-gradient(135deg, #0a1118, #06090f);
}

.bt-appstore {
  background: linear-gradient(135deg, #05050a, #101320);
  opacity: 0.85;
}

.bt-hero-bullets {
  list-style: none;
  padding: 0;
  margin: 0;
  font-size: 0.85rem;
  color: var(--bt-text-soft);
}

.bt-hero-bullets li {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.25rem;
}

.bt-hero-bullets li::before {
  content: "";
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--bt-primary);
}

/* Phone frame */

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

.bt-phone-frame {
  position: relative;
  width: 270px;
  max-width: 100%;
  border-radius: 34px;
  padding: 0.9rem;
  background: radial-gradient(circle at top, #1c232e, #05060a);
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: var(--bt-shadow-soft);
}

.bt-phone-frame::before {
  content: "";
  position: absolute;
  top: 7px;
  left: 50%;
  transform: translateX(-50%);
  width: 34%;
  height: 6px;
  border-radius: 999px;
  background: rgba(5, 7, 12, 0.9);
}

.bt-phone-frame img {
  width: 100%;
  border-radius: 24px;
  display: block;
}

/* Smaller phones (secondary screenshots) */

.bt-phone-frame.small {
  width: 220px;
  padding: 0.75rem;
}

/* ---- Sections ---- */

.bt-section {
  padding: 3rem 0;
}

.bt-section-alt {
  background: radial-gradient(circle at top, #151927 0, #05060a 55%);
}

.bt-section-title {
  font-size: 1.7rem;
  margin-bottom: 0.4rem;
}

.bt-section-subtitle {
  font-size: 0.95rem;
  color: var(--bt-text-soft);
  max-width: 34rem;
  margin-bottom: 2rem;
}

/* Cards / Grid */

.bt-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.4rem;
}

.bt-card {
  background: rgba(5, 7, 12, 0.9);
  border-radius: var(--bt-radius);
  padding: 1.2rem 1.25rem;
  border: 1px solid var(--bt-border);
  box-shadow: var(--bt-shadow-soft);
  font-size: 0.9rem;
  color: var(--bt-text-soft);
}

.bt-card h3 {
  margin-top: 0;
  margin-bottom: 0.5rem;
  font-size: 1.03rem;
  color: var(--bt-text);
}

/* Terpenes */

.bt-terp-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.2rem;
  margin-bottom: 1.5rem;
}

.bt-terp-card {
  background: linear-gradient(145deg, rgba(10, 18, 20, 0.95), rgba(7, 10, 15, 0.98));
  border-radius: var(--bt-radius);
  border: 1px solid rgba(49, 210, 107, 0.12);
  padding: 1.1rem 1.2rem;
  font-size: 0.9rem;
  color: var(--bt-text-soft);
  box-shadow: var(--bt-shadow-soft);
}

.bt-terp-card h3 {
  margin-top: 0;
  margin-bottom: 0.35rem;
  font-size: 1.02rem;
  color: var(--bt-text);
}

.bt-terp-tag {
  margin-top: 0.75rem;
  font-size: 0.8rem;
  color: var(--bt-primary);
}

.bt-terp-footer {
  font-size: 0.9rem;
  color: var(--bt-text-soft);
}

/* How it works / Steps */

.bt-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
}

.bt-step {
  display: flex;
  gap: 0.75rem;
  align-items: flex-start;
}

.bt-step-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 999px;
  font-size: 0.8rem;
  font-weight: 600;
  background: var(--bt-primary-soft);
  color: var(--bt-primary);
}

.bt-step h3 {
  font-size: 1rem;
  margin: 0 0 0.25rem;
}

.bt-step p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--bt-text-soft);
}

.bt-screens-row {
  display: flex;
  flex-wrap: wrap;
  gap: 1.2rem;
}

/* FAQ */

.bt-faq {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  font-size: 0.9rem;
}

.bt-faq details {
  background: rgba(5, 7, 12, 0.9);
  border-radius: var(--bt-radius);
  border: 1px solid var(--bt-border);
  padding: 0.75rem 0.9rem;
}

.bt-faq summary {
  cursor: pointer;
  list-style: none;
  color: var(--bt-text);
}

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

.bt-faq summary::after {
  content: "+";
  float: right;
  font-weight: 600;
  color: var(--bt-text-soft);
}

.bt-faq details[open] summary::after {
  content: "–";
}

.bt-faq p {
  margin-top: 0.5rem;
  color: var(--bt-text-soft);
}

/* CTA */

.bt-cta {
  padding: 2.5rem 0 2.8rem;
  border-top: 1px solid rgba(255, 255, 255, 0.06);
}

.bt-cta-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
}

.bt-cta-inner h2 {
  margin: 0 0 0.4rem;
}

.bt-cta-inner p {
  margin: 0;
  font-size: 0.9rem;
  color: var(--bt-text-soft);
}

/* Footer */

.bt-footer {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 0.9rem 0 1.4rem;
  background: #020308;
}

.bt-footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  color: var(--bt-text-soft);
}

.bt-footer a {
  color: var(--bt-text-soft);
  text-decoration: none;
}

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

/* ---- Responsive tweaks ---- */

@media (max-width: 900px) {
  .bt-hero-inner {
    grid-template-columns: minmax(0, 1fr);
  }

  .bt-hero-media {
    order: -1;
    margin-bottom: 1.4rem;
  }

  .bt-nav-links {
    display: none; /* keep it simple for v1 – no mobile nav yet */
  }

  .bt-grid,
  .bt-terp-grid {
    grid-template-columns: minmax(0, 1fr);
  }

  .bt-cta-inner {
    flex-direction: column;
    align-items: flex-start;
  }

  .bt-footer-inner {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.4rem;
  }
}