/* ================================================================
   main.css — Landing page styles
   Accent color: --accent (#e8ff3e — electric lime)
   Background:   dark slate (#0c0c0f)
   Typography:   'Instrument Serif' (headings) + 'Satoshi' (body)
   ================================================================ */

/* ── Google Fonts ────────────────────────────────────────────── */
@import url('https://fonts.googleapis.com/css2?family=Instrument+Serif:ital@0;1&display=swap');
@import url('https://api.fontshare.com/v2/css?f[]=satoshi@400,500,700&display=swap');

/* ── Design tokens ───────────────────────────────────────────── */
:root {
  --accent:       #e8ff3e;   /* ← change this one value to rebrand */
  --accent-dim:   rgba(232, 255, 62, 0.12);
  --bg:           #0c0c0f;
  --bg-2:         #131318;
  --bg-card:      #18181f;
  --border:       rgba(255,255,255,0.08);
  --text:         #f0f0f0;
  --text-muted:   #888;
  --text-subtle:  #555;
  --font-display: 'Instrument Serif', Georgia, serif;
  --font-body:    'Satoshi', system-ui, sans-serif;
  --radius:       12px;
  --max-w:        1100px;
  --transition:   0.2s ease;
}

/* ── Reset ───────────────────────────────────────────────────── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }

body {
  font-family: var(--font-body);
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  overflow-x: hidden;
}

img, svg { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none; }
button { cursor: pointer; font-family: inherit; }

/* ── Layout helpers ──────────────────────────────────────────── */
.container {
  width: 100%;
  max-width: var(--max-w);
  margin-inline: auto;
  padding-inline: clamp(1.25rem, 5vw, 3rem);
}

/* ── Noise texture overlay ───────────────────────────────────── */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='noise'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23noise)' opacity='0.04'/%3E%3C/svg%3E");
  pointer-events: none;
  z-index: 0;
  opacity: 0.4;
}

/* ── Nav ─────────────────────────────────────────────────────── */
.nav {
  position: sticky;
  top: 0;
  z-index: 100;
  padding-block: 1.1rem;
  border-bottom: 1px solid var(--border);
  backdrop-filter: blur(16px) saturate(1.8);
  background: rgba(12,12,15,0.75);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.nav__logo {
  font-family: var(--font-display);
  font-size: 1.25rem;
  letter-spacing: -0.02em;
  color: var(--text);
  transition: opacity var(--transition);
}
.nav__logo:hover { opacity: 0.75; }

.nav__cta {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--accent);
  color: #0c0c0f;
  font-weight: 700;
  font-size: 0.875rem;
  padding: 0.55rem 1.2rem;
  border-radius: 9999px;
  border: none;
  letter-spacing: 0.01em;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.nav__cta:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 20px rgba(232,255,62,0.35);
}

/* ── Hero ─────────────────────────────────────────────────────── */
.hero {
  position: relative;
  padding-block: clamp(5rem, 14vw, 10rem);
  overflow: hidden;
}

/* Radial glow behind hero text */
.hero::after {
  content: '';
  position: absolute;
  top: -20%;
  left: 50%;
  transform: translateX(-50%);
  width: 900px;
  height: 600px;
  background: radial-gradient(ellipse at center, rgba(232,255,62,0.06) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner { position: relative; z-index: 1; }

.hero__badge {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,62,0.2);
  padding: 0.3rem 0.85rem;
  border-radius: 9999px;
  margin-bottom: 1.75rem;
  letter-spacing: 0.04em;
}

.hero__headline {
  font-family: var(--font-display);
  font-size: clamp(2.5rem, 6vw, 5rem);
  line-height: 1.08;
  letter-spacing: -0.03em;
  max-width: 14ch;
  margin-bottom: 1.5rem;
  background: linear-gradient(175deg, #fff 40%, rgba(255,255,255,0.55));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero__sub {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--text-muted);
  max-width: 46ch;
  margin-bottom: 2.5rem;
  line-height: 1.55;
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  align-items: center;
}

.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #0c0c0f;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.85rem 2rem;
  border-radius: 9999px;
  border: none;
  letter-spacing: 0.01em;
  transition: transform var(--transition), box-shadow var(--transition);
  text-decoration: none;
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(232,255,62,0.3);
}

.btn-ghost {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--text-muted);
  font-size: 1rem;
  padding: 0.85rem 1.5rem;
  border-radius: 9999px;
  border: 1px solid var(--border);
  background: transparent;
  transition: color var(--transition), border-color var(--transition);
  text-decoration: none;
}
.btn-ghost:hover {
  color: var(--text);
  border-color: rgba(255,255,255,0.2);
}

/* ── Divider line ─────────────────────────────────────────────── */
.divider {
  height: 1px;
  background: var(--border);
  margin-block: 0;
}

/* ── Features section ─────────────────────────────────────────── */
.features {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.section-label {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 3rem;
}

.features__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5px;
  background: var(--border);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
}

.feature-card {
  background: var(--bg-card);
  padding: 2.5rem 2rem;
  transition: background var(--transition);
  position: relative;
}
.feature-card:hover {
  background: #1e1e28;
}

.feature-card__icon {
  font-size: 2rem;
  margin-bottom: 1.25rem;
  display: block;
}

.feature-card__heading {
  font-family: var(--font-display);
  font-size: 1.35rem;
  margin-bottom: 0.65rem;
  color: var(--text);
  letter-spacing: -0.02em;
}

.feature-card__body {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── How it works ─────────────────────────────────────────────── */
.how {
  padding-block: clamp(4rem, 10vw, 8rem);
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.how__header {
  margin-bottom: 4rem;
}

.how__headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 4vw, 3rem);
  letter-spacing: -0.03em;
  margin-top: 0.75rem;
  max-width: 20ch;
  background: linear-gradient(175deg, #fff 50%, rgba(255,255,255,0.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.steps {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 3rem;
  position: relative;
}

/* Connecting line between steps (desktop) */
.steps::before {
  content: '';
  position: absolute;
  top: 2.2rem;
  left: 3.5rem;
  right: 3.5rem;
  height: 1px;
  background: linear-gradient(90deg, transparent, var(--border) 20%, var(--border) 80%, transparent);
}

.step {
  position: relative;
}

.step__number {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,62,0.15);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border-radius: 50%;
  margin-bottom: 1.5rem;
  position: relative;
  z-index: 1;
}

.step__heading {
  font-family: var(--font-display);
  font-size: 1.25rem;
  margin-bottom: 0.6rem;
  letter-spacing: -0.02em;
}

.step__body {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.6;
}

/* ── Waitlist section ─────────────────────────────────────────── */
.waitlist {
  padding-block: clamp(5rem, 12vw, 9rem);
}

.waitlist__inner {
  max-width: 600px;
}

.waitlist__headline {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.5rem);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: 0.75rem;
  background: linear-gradient(175deg, #fff 50%, rgba(255,255,255,0.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.waitlist__sub {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 2.25rem;
}

.waitlist-form {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
}

.waitlist-form__input {
  flex: 1 1 260px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: 0.9rem 1.5rem;
  font-size: 1rem;
  color: var(--text);
  font-family: var(--font-body);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}
.waitlist-form__input::placeholder { color: var(--text-subtle); }
.waitlist-form__input:focus {
  border-color: rgba(232,255,62,0.4);
  box-shadow: 0 0 0 3px rgba(232,255,62,0.08);
}

.waitlist-form__btn {
  background: var(--accent);
  color: #0c0c0f;
  font-weight: 700;
  font-size: 1rem;
  padding: 0.9rem 1.75rem;
  border-radius: 9999px;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
}
.waitlist-form__btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 24px rgba(232,255,62,0.3);
}
.waitlist-form__btn:disabled {
  opacity: 0.6;
  transform: none;
}

.waitlist-form__message {
  margin-top: 1rem;
  font-size: 0.9rem;
  min-height: 1.5rem;
}
.waitlist-form__message.success { color: var(--accent); }
.waitlist-form__message.error   { color: #ff6b6b; }

/* ── Referral card (post-signup state) ───────────────────────── */
.referral-card {
  max-width: 560px;
  animation: fadeIn 0.35s ease both;
}

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(12px); }
  to   { opacity: 1; transform: translateY(0); }
}

.referral-card__position-row {
  display: flex;
  align-items: baseline;
  gap: 0.4rem;
  margin-bottom: 0.5rem;
}

.referral-card__position-label {
  font-size: 1.25rem;
  color: var(--text-muted);
  font-family: var(--font-body);
}

.referral-card__position-num {
  font-family: var(--font-display);
  font-size: clamp(3rem, 8vw, 5rem);
  color: var(--accent);
  letter-spacing: -0.04em;
  line-height: 1;
}

.referral-card__mechanic {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 2rem;
}

.referral-card__link-row {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-bottom: 1rem;
}

.referral-card__link-input {
  flex: 1 1 240px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 9999px;
  padding: 0.75rem 1.25rem;
  font-size: 0.875rem;
  font-family: 'Courier New', monospace;
  color: var(--text-muted);
  outline: none;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  cursor: pointer;
}

.referral-card__copy-btn {
  background: var(--accent);
  color: #0c0c0f;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: 9999px;
  border: none;
  transition: transform var(--transition), box-shadow var(--transition), opacity var(--transition);
  white-space: nowrap;
}
.referral-card__copy-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 4px 18px rgba(232,255,62,0.3);
}

.referral-card__tweet-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
  font-size: 0.875rem;
  font-weight: 600;
  padding: 0.65rem 1.25rem;
  border-radius: 9999px;
  transition: border-color var(--transition), color var(--transition);
}
.referral-card__tweet-btn:hover {
  border-color: rgba(255,255,255,0.3);
  color: var(--text);
}

/* ── Footer ──────────────────────────────────────────────────── */
.footer {
  border-top: 1px solid var(--border);
  padding-block: 3rem;
}

.footer__inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
}

.footer__brand {}

.footer__logo {
  font-family: var(--font-display);
  font-size: 1.1rem;
  color: var(--text);
  margin-bottom: 0.3rem;
}

.footer__tagline {
  font-size: 0.85rem;
  color: var(--text-subtle);
}

.footer__links {
  display: flex;
  gap: 1.75rem;
  flex-wrap: wrap;
  align-items: center;
  list-style: none;
}

.footer__links a {
  font-size: 0.875rem;
  color: var(--text-subtle);
  transition: color var(--transition);
}
.footer__links a:hover { color: var(--text); }

.footer__copy {
  width: 100%;
  font-size: 0.8rem;
  color: var(--text-subtle);
  padding-top: 1.5rem;
  border-top: 1px solid var(--border);
  margin-top: 1rem;
}

/* ── Social proof strip ──────────────────────────────────────── */
.social-proof {
  padding-block: clamp(2.5rem, 6vw, 4rem);
  background: var(--bg-2);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  text-align: center;
}

.social-proof__heading {
  font-size: 0.78rem;
  font-weight: 700;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--text-subtle);
  margin-bottom: 2rem;
}

.social-proof__logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 1rem;
}

.logo-slot {
  display: flex;
  align-items: center;
  justify-content: center;
  width: clamp(100px, 14vw, 140px);
  height: 44px;
  border: 1px solid var(--border);
  border-radius: 8px;
  background: var(--bg-card);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.14em;
  text-transform: uppercase;
  color: var(--text-subtle);
  opacity: 0.6;
  transition: border-color var(--transition), opacity var(--transition);
}
.logo-slot:hover {
  border-color: var(--accent);
  opacity: 1;
}

/* ── Feature cards (3-up, SVG icons) ────────────────────────── */
.feature-cards {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.feature-cards__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.fc-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 2.25rem 2rem;
  transition: border-color var(--transition), background var(--transition);
}
.fc-card:hover {
  border-color: rgba(232,255,62,0.22);
  background: #1e1e28;
}

.fc-card__icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-dim);
  border: 1px solid rgba(232,255,62,0.15);
  border-radius: 10px;
  margin-bottom: 1.5rem;
  color: var(--accent);
}
.fc-card__icon svg {
  display: block;
  flex-shrink: 0;
}

.fc-card__title {
  font-family: var(--font-display);
  font-size: 1.2rem;
  letter-spacing: -0.02em;
  color: var(--text);
  margin-bottom: 0.6rem;
}

.fc-card__body {
  font-size: 0.93rem;
  color: var(--text-muted);
  line-height: 1.65;
}

/* ── FAQ section ─────────────────────────────────────────────── */
.faq {
  padding-block: clamp(4rem, 10vw, 8rem);
}

.faq__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: 4rem;
  align-items: start;
}

.faq__headline {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 3.5vw, 2.75rem);
  letter-spacing: -0.03em;
  margin-top: 0.75rem;
  background: linear-gradient(175deg, #fff 50%, rgba(255,255,255,0.5));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.faq__list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.faq__item {
  border-bottom: 1px solid var(--border);
}
.faq__item:first-child {
  border-top: 1px solid var(--border);
}

.faq__question {
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.4rem 0;
  font-size: 1rem;
  font-weight: 600;
  color: var(--text);
  cursor: pointer;
  user-select: none;
  gap: 1rem;
  transition: color var(--transition);
}
.faq__question::-webkit-details-marker { display: none; }
.faq__question::after {
  content: '+';
  font-size: 1.25rem;
  font-weight: 300;
  color: var(--text-subtle);
  flex-shrink: 0;
  transition: transform var(--transition), color var(--transition);
  line-height: 1;
}
.faq__item[open] > .faq__question { color: var(--accent); }
.faq__item[open] > .faq__question::after {
  transform: rotate(45deg);
  color: var(--accent);
}
.faq__question:hover { color: var(--accent); }

.faq__answer {
  padding-bottom: 1.4rem;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
  max-width: 62ch;
}

.faq__link {
  color: var(--accent);
  text-decoration: underline;
  text-decoration-color: rgba(232,255,62,0.35);
  text-underline-offset: 3px;
  transition: text-decoration-color var(--transition);
}
.faq__link:hover {
  text-decoration-color: var(--accent);
}

/* ── Responsive ──────────────────────────────────────────────── */
@media (max-width: 860px) {
  .feature-cards__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .faq__inner {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

@media (max-width: 640px) {
  .steps::before { display: none; }
  .waitlist-form { flex-direction: column; }
  .waitlist-form__input, .waitlist-form__btn { width: 100%; flex: none; }
  .footer__inner { flex-direction: column; align-items: flex-start; }
  .feature-cards__grid { grid-template-columns: 1fr; }
  .social-proof__logos { gap: 0.75rem; }
  .logo-slot { width: clamp(88px, 28vw, 120px); }
}