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

:root {
  --bg: #07070c;
  --bg-elevated: #0e0e16;
  --bg-card: rgba(18, 18, 28, 0.72);
  --border: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(255, 255, 255, 0.16);
  --text: #e8e8ef;
  --text-muted: #8b8b9e;
  --text-dim: #5c5c6e;
  --accent: #a78bfa;
  --accent-bright: #c4b5fd;
  --accent-glow: rgba(167, 139, 250, 0.35);
  --cyan: #22d3ee;
  --cyan-glow: rgba(34, 211, 238, 0.2);
  --warn: #fbbf24;
  --success: #34d399;
  --error: #f87171;
  --radius: 14px;
  --radius-lg: 22px;
  --font: "Instrument Sans", system-ui, sans-serif;
  --mono: "JetBrains Mono", monospace;
  --header-h: 72px;
}

html { scroll-behavior: smooth; }

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

.container {
  width: min(1120px, calc(100% - 2.5rem));
  margin-inline: auto;
}

/* ── Ambient background ── */
.ambient {
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 0;
  overflow: hidden;
}

.ambient__orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(100px);
  opacity: 0.45;
}

.ambient__orb--1 {
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, #4c1d95 0%, transparent 70%);
  top: -200px;
  right: -100px;
}

.ambient__orb--2 {
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, #0e7490 0%, transparent 70%);
  bottom: 10%;
  left: -150px;
}

.ambient__orb--3 {
  width: 400px;
  height: 400px;
  background: radial-gradient(circle, #581c87 0%, transparent 70%);
  top: 45%;
  right: 20%;
  opacity: 0.25;
}

/* ── Header ── */
.header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  backdrop-filter: blur(16px) saturate(1.4);
  background: rgba(7, 7, 12, 0.75);
  border-bottom: 1px solid var(--border);
}

.header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
  gap: 1.5rem;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 700;
  font-size: 1.15rem;
  color: var(--text);
  text-decoration: none;
  letter-spacing: -0.02em;
}

.logo__mark {
  color: var(--accent);
  font-size: 1.3rem;
}

.logo__ai {
  color: var(--accent-bright);
  font-weight: 500;
}

.nav {
  display: none;
  gap: 2rem;
}

.nav a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.9rem;
  font-weight: 500;
  transition: color 0.2s;
}

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

@media (min-width: 768px) {
  .nav { display: flex; }
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: 999px;
  font-family: var(--font);
  font-weight: 600;
  font-size: 0.9rem;
  text-decoration: none;
  border: none;
  cursor: pointer;
  transition: transform 0.2s, box-shadow 0.2s, background 0.2s;
}

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

.btn--sm { padding: 0.5rem 1rem; font-size: 0.85rem; }

.btn--lg {
  padding: 0.9rem 1.75rem;
  font-size: 1rem;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent) 0%, #7c3aed 100%);
  color: #fff;
  box-shadow: 0 0 24px var(--accent-glow);
}

.btn--primary:hover {
  box-shadow: 0 0 36px var(--accent-glow), 0 4px 20px rgba(0, 0, 0, 0.4);
}

.btn--glow {
  position: relative;
  overflow: hidden;
}

.btn--glow::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(105deg, transparent 40%, rgba(255,255,255,0.15) 50%, transparent 60%);
  transform: translateX(-100%);
  transition: transform 0.6s;
}

.btn--glow:hover::before { transform: translateX(100%); }

.btn__icon { font-size: 1.1rem; }

.btn--ghost {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.btn--ghost:hover {
  border-color: var(--border-hover);
  color: var(--text);
}

/* ── Typography helpers ── */
.eyebrow {
  font-family: var(--mono);
  font-size: 0.75rem;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--cyan);
  margin-bottom: 0.75rem;
}

h1 {
  font-size: clamp(2rem, 5vw, 3.25rem);
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin-bottom: 1.25rem;
}

h2 {
  font-size: clamp(1.75rem, 3.5vw, 2.25rem);
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.2;
}

h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

/* ── Hero ── */
.hero {
  position: relative;
  z-index: 1;
  padding: 4rem 0 3rem;
}

.hero__grid {
  display: grid;
  gap: 3rem;
  align-items: center;
}

@media (min-width: 900px) {
  .hero__grid {
    grid-template-columns: 1.1fr 0.9fr;
    padding-top: 2rem;
  }
}

.hero__sub {
  color: var(--text-muted);
  font-size: 1.05rem;
  max-width: 52ch;
  margin-bottom: 1.75rem;
}

.hero__sub strong { color: var(--text); font-weight: 600; }

.badges {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  margin-bottom: 2rem;
}

.badges li {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.badges__icon {
  color: var(--accent);
  font-size: 0.55rem;
  margin-top: 0.45rem;
  flex-shrink: 0;
}

/* Waveform visual */
.waveform-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  backdrop-filter: blur(12px);
}

.waveform-card__header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  margin-bottom: 1.25rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.pulse {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--success);
  box-shadow: 0 0 8px var(--success);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: 0.4; }
}

.waveform {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  height: 80px;
  margin-bottom: 1.5rem;
}

.waveform span {
  display: block;
  width: 4px;
  border-radius: 2px;
  background: linear-gradient(to top, var(--accent), var(--cyan));
  animation: wave 1.2s ease-in-out infinite;
}

.waveform span:nth-child(1)  { height: 30%; animation-delay: 0s; }
.waveform span:nth-child(2)  { height: 55%; animation-delay: 0.1s; }
.waveform span:nth-child(3)  { height: 80%; animation-delay: 0.2s; }
.waveform span:nth-child(4)  { height: 45%; animation-delay: 0.3s; }
.waveform span:nth-child(5)  { height: 70%; animation-delay: 0.15s; }
.waveform span:nth-child(6)  { height: 90%; animation-delay: 0.25s; }
.waveform span:nth-child(7)  { height: 50%; animation-delay: 0.05s; }
.waveform span:nth-child(8)  { height: 65%; animation-delay: 0.35s; }
.waveform span:nth-child(9)  { height: 40%; animation-delay: 0.2s; }
.waveform span:nth-child(10) { height: 75%; animation-delay: 0.1s; }
.waveform span:nth-child(11) { height: 55%; animation-delay: 0.3s; }
.waveform span:nth-child(12) { height: 85%; animation-delay: 0.15s; }
.waveform span:nth-child(13) { height: 35%; animation-delay: 0.25s; }
.waveform span:nth-child(14) { height: 60%; animation-delay: 0.05s; }
.waveform span:nth-child(15) { height: 45%; animation-delay: 0.35s; }
.waveform span:nth-child(16) { height: 70%; animation-delay: 0.2s; }
.waveform span:nth-child(17) { height: 50%; animation-delay: 0.1s; }
.waveform span:nth-child(18) { height: 80%; animation-delay: 0.3s; }
.waveform span:nth-child(19) { height: 40%; animation-delay: 0.15s; }
.waveform span:nth-child(20) { height: 55%; animation-delay: 0.25s; }

@keyframes wave {
  0%, 100% { transform: scaleY(1); opacity: 0.7; }
  50% { transform: scaleY(1.4); opacity: 1; }
}

.waveform-card__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.waveform-card__stats strong {
  display: block;
  font-size: 1.25rem;
  font-weight: 700;
  color: var(--text);
}

.waveform-card__stats span {
  font-size: 0.75rem;
  color: var(--text-dim);
}

/* ── Sections ── */
.section {
  position: relative;
  z-index: 1;
  padding: 5rem 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 3rem;
}

.section-header__lead {
  color: var(--text-muted);
  margin-top: 1rem;
  font-size: 1.05rem;
}

/* ── Form panel ── */
.section--form { padding-top: 2rem; }

.form-panel {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(16px);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.4);
}

.form-panel__intro {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid var(--border);
}

.form-panel__intro h2 { margin-bottom: 0.75rem; }

.form-panel__intro p {
  color: var(--text-muted);
  max-width: 60ch;
}

.form-row {
  display: grid;
  gap: 1.25rem;
  margin-bottom: 1.25rem;
}

@media (min-width: 768px) {
  .form-row { grid-template-columns: 1fr 1fr; }
}

.field label {
  display: block;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 0.4rem;
}

.field input {
  width: 100%;
  padding: 0.75rem 1rem;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.95rem;
  transition: border-color 0.2s, box-shadow 0.2s;
}

.field input::placeholder { color: var(--text-dim); }

.field input:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-glow);
}

.field input:invalid:not(:placeholder-shown) {
  border-color: var(--error);
}

.field__help {
  display: block;
  margin-top: 0.4rem;
  font-size: 0.8rem;
  color: var(--text-dim);
  line-height: 1.45;
}

.field__help--warn {
  color: var(--warn);
  opacity: 0.9;
}

.form-actions {
  margin-top: 2rem;
  text-align: center;
}

.form-actions__note {
  margin-top: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-dim);
}

.form-status {
  margin-top: 1.25rem;
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  font-size: 0.9rem;
  text-align: center;
}

.form-status--success {
  background: rgba(52, 211, 153, 0.1);
  border: 1px solid rgba(52, 211, 153, 0.3);
  color: var(--success);
}

.form-status--error {
  background: rgba(248, 113, 113, 0.1);
  border: 1px solid rgba(248, 113, 113, 0.3);
  color: var(--error);
}

.form-status--loading {
  background: rgba(167, 139, 250, 0.1);
  border: 1px solid rgba(167, 139, 250, 0.3);
  color: var(--accent-bright);
}

/* ── Advantage cards ── */
.cards {
  display: grid;
  gap: 1.25rem;
}

@media (min-width: 768px) {
  .cards { grid-template-columns: repeat(2, 1fr); }
}

.card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  backdrop-filter: blur(8px);
  transition: border-color 0.25s, transform 0.25s;
}

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

.card__num {
  font-family: var(--mono);
  font-size: 0.75rem;
  color: var(--accent);
  letter-spacing: 0.1em;
  margin-bottom: 1rem;
  display: block;
}

.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

.card p strong { color: var(--text); }

/* ── Hubs ── */
.section--hubs {
  background: linear-gradient(180deg, transparent 0%, rgba(14, 14, 22, 0.6) 50%, transparent 100%);
}

.hubs {
  display: grid;
  gap: 1rem;
}

@media (min-width: 640px) {
  .hubs { grid-template-columns: repeat(2, 1fr); }
}

@media (min-width: 1024px) {
  .hubs {
    grid-template-columns: repeat(3, 1fr);
  }
  .hub:last-child {
    grid-column: span 1;
  }
}

.hub {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  transition: border-color 0.25s;
}

.hub:hover { border-color: rgba(34, 211, 238, 0.3); }

.hub__flag {
  font-size: 1.5rem;
  display: block;
  margin-bottom: 0.75rem;
}

.hub p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ── Checklist ── */
.checklist-panel {
  display: grid;
  gap: 2.5rem;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: clamp(1.5rem, 4vw, 2.5rem);
  backdrop-filter: blur(12px);
}

@media (min-width: 768px) {
  .checklist-panel {
    grid-template-columns: 1fr 1.2fr;
    align-items: start;
  }
}

.checklist-panel__intro p {
  color: var(--text-muted);
  margin-top: 0.75rem;
}

.checklist {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.checklist li {
  display: flex;
  gap: 1rem;
  padding: 1.25rem;
  background: rgba(0, 0, 0, 0.25);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.checklist__marker {
  flex-shrink: 0;
  width: 28px;
  height: 28px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 50%;
  background: rgba(52, 211, 153, 0.15);
  color: var(--success);
  font-size: 0.85rem;
  font-weight: 700;
}

.checklist li p {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ── FAQ ── */
.faq {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.faq__item {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  transition: border-color 0.2s;
}

.faq__item[open] {
  border-color: var(--border-hover);
}

.faq__item summary {
  padding: 1.25rem 1.5rem;
  font-weight: 600;
  cursor: pointer;
  list-style: none;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

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

.faq__item summary::after {
  content: "+";
  font-size: 1.25rem;
  color: var(--accent);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.faq__item[open] summary::after {
  transform: rotate(45deg);
}

.faq__item p {
  padding: 0 1.5rem 1.25rem;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.faq__item p strong { color: var(--text); }

/* ── Footer ── */
.footer {
  position: relative;
  z-index: 1;
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
  margin-top: 2rem;
}

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

.footer__copy {
  color: var(--text-dim);
  font-size: 0.85rem;
}

.logo--footer { font-size: 1rem; }