:root {
  color-scheme: dark;
  --bg: #080a12;
  --panel: rgba(17, 22, 37, 0.82);
  --panel-strong: #111827;
  --line: rgba(148, 163, 184, 0.2);
  --text: #f8fafc;
  --muted: #9ca3af;
  --cyan: #22d3ee;
  --violet: #a78bfa;
  --lime: #bef264;
  --danger: #fb7185;
  font-family: "Space Grotesk", "Aptos", system-ui, sans-serif;
}

* { box-sizing: border-box; }

body {
  margin: 0;
  min-height: 100vh;
  color: var(--text);
  background:
    radial-gradient(circle at 20% 15%, rgba(34, 211, 238, 0.2), transparent 28%),
    radial-gradient(circle at 80% 10%, rgba(167, 139, 250, 0.24), transparent 26%),
    linear-gradient(135deg, #050607 0%, #0f172a 54%, #111827 100%);
}

button, input, textarea, select { font: inherit; }

.app-shell {
  width: min(1180px, calc(100% - 32px));
  margin: 0 auto;
  padding: 32px 0 48px;
}

.hero-panel, .auth-card, .search-card, .preview-panel, .audiences-panel, .modal-card {
  border: 1px solid var(--line);
  background: var(--panel);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.35);
  backdrop-filter: blur(18px);
}

.hero-panel {
  position: relative;
  overflow: hidden;
  border-radius: 34px;
  padding: clamp(32px, 6vw, 72px);
}

.hero-panel::after {
  content: "";
  position: absolute;
  inset: auto -80px -120px auto;
  width: 420px;
  height: 420px;
  border-radius: 50%;
  background: conic-gradient(from 120deg, var(--cyan), var(--violet), var(--lime), var(--cyan));
  filter: blur(40px);
  opacity: 0.22;
}

.eyebrow, .section-kicker, .safe-note {
  color: var(--lime);
  font-size: 0.78rem;
  font-weight: 800;
  letter-spacing: 0.16em;
  text-transform: uppercase;
}

h1, h2, p { margin-top: 0; }

h1 {
  margin-bottom: 16px;
  font-size: clamp(3.4rem, 10vw, 8rem);
  letter-spacing: -0.09em;
  line-height: 0.84;
}

h2 { margin-bottom: 16px; font-size: clamp(1.45rem, 3vw, 2.2rem); }

.hero-copy {
  max-width: 740px;
  color: #cbd5e1;
  font-size: clamp(1.05rem, 2vw, 1.35rem);
  line-height: 1.65;
}

.hero-actions, .token-row, .form-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  align-items: center;
}

.primary-action, button {
  border: 0;
  border-radius: 999px;
  padding: 14px 20px;
  color: #06121a;
  background: linear-gradient(135deg, var(--cyan), var(--lime));
  font-weight: 800;
  text-decoration: none;
  cursor: pointer;
}

button[type="button"] { background: linear-gradient(135deg, var(--violet), var(--cyan)); }

.auth-card, .search-card, .preview-panel, .audiences-panel, .modal-card {
  border-radius: 28px;
  padding: 24px;
}

.auth-card { margin: 18px 0; }

.app-shell-private {
  min-height: 100vh;
  display: grid;
  align-content: center;
}

body[data-authenticated="false"] .app-shell-private {
  max-width: 760px;
}

body[data-authenticated="false"] .login-hero {
  text-align: center;
}

body[data-authenticated="false"] .login-card {
  max-width: 560px;
  width: 100%;
  margin: 18px auto 0;
}

[hidden] { display: none !important; }

.builder-grid {
  display: grid;
  grid-template-columns: minmax(0, 0.9fr) minmax(320px, 1.1fr);
  gap: 18px;
}

.audiences-panel { grid-column: 1 / -1; }

.field-label {
  display: block;
  margin: 16px 0 8px;
  color: #dbeafe;
  font-weight: 700;
}

input, textarea, select {
  width: 100%;
  border: 1px solid var(--line);
  border-radius: 18px;
  padding: 14px 16px;
  color: var(--text);
  background: rgba(2, 6, 23, 0.72);
  outline: none;
}

input:focus, textarea:focus, select:focus {
  border-color: var(--cyan);
  box-shadow: 0 0 0 4px rgba(34, 211, 238, 0.14);
}

.token-row input { flex: 1 1 340px; }

.mode-tabs {
  display: grid;
  gap: 10px;
  margin: 20px 0;
  padding: 0;
  border: 0;
}

.mode-tabs label, .lookalike-option {
  display: flex;
  align-items: center;
  gap: 10px;
  border: 1px solid var(--line);
  border-radius: 16px;
  padding: 12px 14px;
  background: rgba(15, 23, 42, 0.7);
}

.lookalike-option {
  margin: 18px 0;
  align-items: flex-start;
}

.lookalike-option small {
  display: block;
  margin-top: 4px;
  color: var(--muted);
}

.lookalike-option input {
  width: auto;
  margin-top: 3px;
}

.count-strip {
  display: flex;
  justify-content: space-between;
  align-items: center;
  border: 1px solid var(--line);
  border-radius: 20px;
  padding: 16px;
  background: rgba(34, 211, 238, 0.08);
}

.count-strip strong { font-size: 2rem; color: var(--lime); }

.preview-list, .created-audiences-list { display: grid; gap: 12px; margin-top: 16px; }

.timeline-card, .preview-card, .audience-status-card {
  display: grid;
  grid-template-columns: 44px 1fr;
  gap: 12px;
  align-items: start;
  border: 1px solid var(--line);
  border-radius: 22px;
  padding: 16px;
  background: linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.74));
}

.avatar-dot {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background: radial-gradient(circle, var(--lime), var(--cyan));
  box-shadow: 0 0 28px rgba(34, 211, 238, 0.35);
}

.timeline-card p, .preview-card p, .status-line { color: var(--muted); line-height: 1.5; }
.timeline-card p, .preview-card p, .status-line { color: var(--muted); line-height: 1.5; }
.status-line[data-state="error"] { color: var(--danger); }
.status-line[data-state="ok"] { color: var(--lime); }

.audience-status-card { grid-template-columns: 1fr; }

.audience-status-card > div {
  display: flex;
  justify-content: space-between;
  gap: 12px;
  align-items: center;
}

.status-pill {
  border: 1px solid var(--line);
  border-radius: 999px;
  padding: 4px 10px;
  color: var(--lime);
  background: rgba(190, 242, 100, 0.08);
  font-size: 0.8rem;
  font-weight: 800;
}

.audience-status-card[data-status="error"] .status-pill {
  color: var(--danger);
  background: rgba(251, 113, 133, 0.08);
}

.modal-card {
  width: min(520px, calc(100% - 32px));
  color: var(--text);
}

.modal-card::backdrop {
  background: rgba(2, 6, 23, 0.72);
  backdrop-filter: blur(8px);
}

.secondary-action {
  color: var(--text);
  background: rgba(15, 23, 42, 0.86);
  border: 1px solid var(--line);
}

@media (max-width: 860px) {
  .builder-grid { grid-template-columns: 1fr; }
  .app-shell { width: min(100% - 20px, 1180px); padding-top: 10px; }
  .hero-panel, .auth-card, .search-card, .preview-panel { border-radius: 22px; }
}