:root {
  --bg: #fffaf5;
  --bg-subtle: #f5f0ff;
  --text: #201a3d;
  --text-muted: #5c5480;
  --border: #e8e1fb;
  --accent: #7c3aed;
  --accent-dark: #6425c9;
  --accent-contrast: #ffffff;
  --accent2: #f97316;
  --accent3: #10b981;
  --accent4: #ec4899;
  --card-bg: #ffffff;
  --code-bg: #201a3d;
  --code-text: #f1edff;
  --radius: 16px;
  --shadow: 0 1px 2px rgba(32, 26, 61, 0.05), 0 12px 28px -12px rgba(124, 58, 237, 0.25);
}

:root[data-theme="dark"] {
  --bg: #140f2b;
  --bg-subtle: #1b1638;
  --text: #f2eeff;
  --text-muted: #b3a8d9;
  --border: #2d2757;
  --accent: #a78bfa;
  --accent-dark: #8b5cf6;
  --accent-contrast: #1a1033;
  --accent2: #fb923c;
  --accent3: #34d399;
  --accent4: #f472b6;
  --card-bg: #1c1740;
  --code-bg: #0f0b23;
  --code-text: #e8e0fb;
  --shadow: 0 1px 2px rgba(0, 0, 0, 0.4), 0 12px 28px -12px rgba(0, 0, 0, 0.6);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Inter, Roboto, Helvetica, Arial, sans-serif;
  line-height: 1.5;
  -webkit-font-smoothing: antialiased;
  transition: background-color 0.2s ease, color 0.2s ease;
}

.wrap {
  max-width: 1080px;
  margin: 0 auto;
  padding: 0 20px;
}

h1, h2, h3 {
  line-height: 1.15;
  letter-spacing: -0.01em;
}

code {
  font-family: ui-monospace, SFMono-Regular, Menlo, Consolas, monospace;
  font-size: 0.92em;
}

a {
  color: var(--accent);
}

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

.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  height: 64px;
}

.nav__brand {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--text);
  text-decoration: none;
  margin-right: auto;
}

.nav__logo {
  width: 28px;
  height: 28px;
  flex-shrink: 0;
}

.nav__links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav__links a {
  color: var(--text-muted);
  text-decoration: none;
  font-size: 0.95rem;
}

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

.nav__cta {
  color: var(--accent) !important;
  font-weight: 600;
}

.nav__toggle {
  display: none;
  flex-direction: column;
  gap: 4px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav__toggle span {
  width: 20px;
  height: 2px;
  background: var(--text);
  display: block;
}

/* ---------- Buy me a coffee ---------- */

.nav__coffee {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  flex-shrink: 0;
  padding: 6px 14px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--accent2) 35%, transparent);
  background: color-mix(in srgb, var(--accent2) 14%, transparent);
  color: var(--accent2);
  font-size: 0.85rem;
  font-weight: 600;
  text-decoration: none;
}

.nav__coffee:hover {
  background: color-mix(in srgb, var(--accent2) 24%, transparent);
}

.nav__coffee svg {
  width: 15px;
  height: 15px;
  flex-shrink: 0;
}

/* ---------- Theme toggle ---------- */

.theme-toggle {
  position: relative;
  flex-shrink: 0;
  width: 56px;
  height: 30px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: var(--bg-subtle);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 5px;
  font-family: inherit;
}

.theme-toggle__icon {
  position: relative;
  z-index: 1;
  line-height: 1;
  color: var(--text-muted);
  transition: opacity 0.2s ease;
}

.theme-toggle__icon svg {
  display: block;
  width: 14px;
  height: 14px;
}

:root:not([data-theme="dark"]) .theme-toggle__icon--moon {
  opacity: 0.35;
}

:root[data-theme="dark"] .theme-toggle__icon--sun {
  opacity: 0.35;
}

.theme-toggle__thumb {
  position: absolute;
  top: 3px;
  left: 3px;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: linear-gradient(135deg, var(--accent), var(--accent4));
  transition: transform 0.25s ease;
  z-index: 0;
}

:root[data-theme="dark"] .theme-toggle__thumb {
  transform: translateX(26px);
}

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

.hero {
  position: relative;
  overflow: hidden;
  padding: 88px 0 64px;
  background: var(--bg);
}

.hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(50% 50% at 12% 15%, color-mix(in srgb, var(--accent4) 20%, transparent), transparent 70%),
    radial-gradient(55% 55% at 90% 0%, color-mix(in srgb, var(--accent) 22%, transparent), transparent 70%),
    radial-gradient(45% 45% at 75% 95%, color-mix(in srgb, var(--accent2) 18%, transparent), transparent 70%);
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(260px, 360px);
  gap: 48px;
  align-items: center;
}

.eyebrow {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.85rem;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin: 0 0 16px;
}

.eyebrow a {
  color: inherit;
}

.hero h1 {
  font-size: clamp(2rem, 4.5vw, 3.1rem);
  margin: 0 0 20px;
  max-width: 16ch;
}

.accent {
  background: linear-gradient(135deg, var(--accent), var(--accent4));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero__lede {
  font-size: 1.15rem;
  color: var(--text-muted);
  max-width: 62ch;
  margin: 0 0 32px;
}

.hero__ctas {
  display: flex;
  flex-wrap: wrap;
  gap: 14px;
  margin-bottom: 32px;
}

.hero__facts {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.95rem;
}

.hero__facts li::before {
  content: "✓";
  color: var(--accent3);
  font-weight: 700;
  margin-right: 8px;
}

/* ---------- Hero booking card visual ---------- */

.hero__visual {
  position: relative;
  max-width: 340px;
  margin: 0 auto;
}

.booking-card {
  position: relative;
  z-index: 1;
  width: 100%;
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: 0 30px 60px -20px color-mix(in srgb, var(--accent) 40%, transparent);
  padding: 20px;
  transform: rotate(-2deg);
}

.booking-card__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 14px;
}

.booking-card__title {
  display: flex;
  align-items: center;
  gap: 8px;
  font-weight: 700;
  font-size: 0.92rem;
  color: var(--text);
}

.booking-card__title svg {
  width: 16px;
  height: 16px;
  color: var(--accent);
}

.booking-card__nav {
  display: flex;
  gap: 10px;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.booking-card__grid {
  display: grid;
  grid-template-columns: repeat(7, 1fr);
  gap: 4px;
  margin-bottom: 14px;
}

.booking-card__weekday {
  font-size: 0.65rem;
  text-align: center;
  color: var(--text-muted);
  font-weight: 600;
}

.booking-card__day {
  font-size: 0.75rem;
  text-align: center;
  padding: 5px 0;
  border-radius: 8px;
  color: var(--text);
}

.booking-card__day.is-booked {
  background: color-mix(in srgb, var(--accent2) 18%, transparent);
  color: var(--accent2);
  font-weight: 600;
}

.booking-card__day.is-selected {
  background: linear-gradient(135deg, var(--accent), var(--accent4));
  color: #ffffff;
  font-weight: 700;
}

.booking-card__slots {
  display: flex;
  gap: 8px;
  margin-bottom: 14px;
}

.booking-card__slot {
  flex: 1;
  text-align: center;
  font-size: 0.78rem;
  padding: 8px 0;
  border-radius: 999px;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.booking-card__slot.is-active {
  background: color-mix(in srgb, var(--accent3) 16%, transparent);
  border-color: var(--accent3);
  color: var(--accent3);
  font-weight: 700;
}

.booking-card__confirm {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--accent3);
  background: color-mix(in srgb, var(--accent3) 12%, transparent);
  padding: 10px 12px;
  border-radius: 10px;
}

.booking-card__confirm svg {
  width: 16px;
  height: 16px;
  flex-shrink: 0;
}

.booking-card__floaty {
  position: absolute;
  z-index: 2;
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--card-bg);
  border: 1px solid var(--border);
  box-shadow: var(--shadow);
  border-radius: 999px;
  padding: 8px 14px;
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text);
}

.booking-card__floaty svg {
  width: 14px;
  height: 14px;
}

.booking-card__floaty--payment {
  top: -18px;
  right: -20px;
  color: var(--accent3);
}

.booking-card__floaty--payment svg {
  color: var(--accent3);
}

.booking-card__floaty--reminder {
  bottom: 6px;
  left: -28px;
  color: var(--accent2);
}

.booking-card__floaty--reminder svg {
  color: var(--accent2);
}

/* ---------- Technical page header ---------- */

.tech-hero {
  padding: 64px 0 48px;
  background: var(--bg-subtle);
  border-bottom: 1px solid var(--border);
}

.tech-hero h1 {
  font-size: clamp(1.9rem, 4vw, 2.6rem);
  margin: 0 0 16px;
}

/* ---------- Buttons ---------- */

.btn {
  display: inline-flex;
  align-items: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 999px;
  font-size: 0.95rem;
  font-weight: 600;
  text-decoration: none;
  border: 1px solid transparent;
  cursor: pointer;
  font-family: inherit;
}

.btn--primary {
  background: linear-gradient(135deg, var(--accent), var(--accent4));
  color: var(--accent-contrast);
}

.btn--primary:hover {
  background: linear-gradient(135deg, var(--accent-dark), var(--accent4));
}

.btn--ghost {
  background: var(--card-bg);
  color: var(--text);
  border-color: var(--border);
}

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

.btn--ghost code {
  color: var(--text-muted);
}

.btn--onbanner {
  background: #ffffff;
  color: var(--accent-dark);
}

.btn--onbanner:hover {
  background: #f5f1ff;
}

.copy-label {
  font-size: 0.8rem;
  color: var(--accent);
  font-weight: 700;
}

/* ---------- Why ---------- */

.why {
  padding: 48px 0;
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
  background: var(--bg-subtle);
}

.why__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 20px;
}

.why__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.why__icon svg {
  width: 20px;
  height: 20px;
}

.why__card:nth-child(4n+1) .why__icon { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.why__card:nth-child(4n+2) .why__icon { background: color-mix(in srgb, var(--accent2) 16%, transparent); color: var(--accent2); }
.why__card:nth-child(4n+3) .why__icon { background: color-mix(in srgb, var(--accent3) 16%, transparent); color: var(--accent3); }
.why__card:nth-child(4n+4) .why__icon { background: color-mix(in srgb, var(--accent4) 16%, transparent); color: var(--accent4); }

.why__card h3 {
  font-size: 1.05rem;
  margin: 0 0 8px;
}

.why__card p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.93rem;
}

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

section {
  padding: 80px 0;
}

section h2 {
  font-size: clamp(1.6rem, 3vw, 2.1rem);
  margin: 0 0 12px;
}

.section__lede {
  color: var(--text-muted);
  margin: 0 0 40px;
  font-size: 1.05rem;
}

/* ---------- Features ---------- */

.features__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.feature {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  box-shadow: var(--shadow);
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}

.feature:hover {
  transform: translateY(-3px);
  box-shadow: 0 20px 40px -20px color-mix(in srgb, var(--accent) 45%, transparent);
}

.feature__icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: 12px;
  margin-bottom: 12px;
}

.feature__icon svg {
  width: 20px;
  height: 20px;
}

.features__grid .feature:nth-child(4n+1) .feature__icon { background: color-mix(in srgb, var(--accent) 16%, transparent); color: var(--accent); }
.features__grid .feature:nth-child(4n+2) .feature__icon { background: color-mix(in srgb, var(--accent2) 16%, transparent); color: var(--accent2); }
.features__grid .feature:nth-child(4n+3) .feature__icon { background: color-mix(in srgb, var(--accent3) 16%, transparent); color: var(--accent3); }
.features__grid .feature:nth-child(4n+4) .feature__icon { background: color-mix(in srgb, var(--accent4) 16%, transparent); color: var(--accent4); }

.feature h3 {
  font-size: 1.05rem;
  margin: 0 0 10px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.feature p {
  color: var(--text-muted);
  margin: 0;
  font-size: 0.93rem;
}

.badge {
  font-size: 0.65rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--accent);
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  padding: 2px 8px;
  border-radius: 999px;
}

/* ---------- CTA banner ---------- */

.cta-banner {
  background: linear-gradient(135deg, var(--accent), var(--accent4));
}

.cta-banner__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.cta-banner h2 {
  margin: 0 0 8px;
  color: #ffffff;
}

.cta-banner p {
  margin: 0;
  color: rgba(255, 255, 255, 0.88);
  max-width: 52ch;
}

/* ---------- Stack ---------- */

.stack {
  background: var(--bg-subtle);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.stack__pills {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
}

.stack__pills li {
  background: var(--card-bg);
  border: 1px solid var(--border);
  border-radius: 999px;
  padding: 8px 18px;
  font-size: 0.9rem;
  font-weight: 600;
}

.stack__pills li:nth-child(4n+1) { color: var(--accent); }
.stack__pills li:nth-child(4n+2) { color: var(--accent2); }
.stack__pills li:nth-child(4n+3) { color: var(--accent3); }
.stack__pills li:nth-child(4n+4) { color: color-mix(in srgb, var(--accent4) 85%, var(--text)); }

/* ---------- Start / code block ---------- */

.code-block {
  background: var(--code-bg);
  color: var(--code-text);
  border-radius: var(--radius);
  padding: 24px;
  overflow-x: auto;
  font-size: 0.9rem;
  line-height: 1.7;
  margin: 0 0 24px;
}

.code-block .comment {
  color: #8aa39b;
}

.start__note {
  color: var(--text-muted);
  max-width: 70ch;
  margin: 0 0 32px;
}

/* ---------- FAQ ---------- */

.faq__item {
  border-bottom: 1px solid var(--border);
  padding: 20px 0;
}

.faq__item summary {
  cursor: pointer;
  font-weight: 600;
  font-size: 1.02rem;
  list-style: none;
}

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

.faq__item summary::before {
  content: "+";
  display: inline-block;
  width: 1.2em;
  color: var(--accent);
  font-weight: 700;
}

.faq__item[open] summary::before {
  content: "–";
}

.faq__item p {
  color: var(--text-muted);
  margin: 12px 0 0 1.2em;
  max-width: 68ch;
}

/* ---------- Footer ---------- */

.site-footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
}

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

.site-footer a {
  color: var(--accent);
}

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

@media (max-width: 860px) {
  .hero__inner {
    grid-template-columns: 1fr;
  }
  .hero__visual {
    margin-top: 24px;
  }
  .why__grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .features__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .why__grid,
  .features__grid {
    grid-template-columns: 1fr;
  }

  .nav__links {
    position: absolute;
    top: 64px;
    left: 0;
    right: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 20px;
    gap: 16px;
    display: none;
  }

  .nav__links.is-open {
    display: flex;
  }

  .nav__toggle {
    display: flex;
  }

  .nav__coffee-label {
    display: none;
  }

  .nav__coffee {
    padding: 6px;
  }

  .hero {
    padding: 56px 0 48px;
  }

  .hero__visual {
    max-width: 280px;
  }

  .booking-card__floaty--payment {
    right: -6px;
  }

  .booking-card__floaty--reminder {
    left: -6px;
  }

  section {
    padding: 56px 0;
  }

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