:root {
  --ink: #14110f;
  --paper: #f9f7f4;
  --slate: #7a7570;
  --accent: #2dd4bf;
  --accent-dark: #1fae9c;
  --border: #e6e1da;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--paper);
  color: var(--ink);
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, sans-serif;
  line-height: 1.6;
}

h1, h2, h3, h4 {
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  letter-spacing: -0.01em;
  line-height: 1.15;
  margin: 0 0 0.5em;
}

p {
  margin: 0 0 1em;
}

a {
  color: var(--accent-dark);
  text-decoration: none;
}

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

img, svg {
  max-width: 100%;
}

.container {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px;
}

/* Header / Nav */
.site-header {
  border-bottom: 1px solid var(--border);
  background: var(--paper);
  position: sticky;
  top: 0;
  z-index: 100;
}

.site-header .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding-top: 16px;
  padding-bottom: 16px;
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 18px;
  letter-spacing: -0.01em;
  color: var(--ink);
}

.brand img {
  width: 36px;
  height: 36px;
}

.brand .accent-word {
  color: var(--accent-dark);
}

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

.main-nav a {
  color: var(--ink);
  font-weight: 500;
  font-size: 15px;
}

.main-nav a.active {
  color: var(--accent-dark);
}

.nav-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--ink);
  margin: 5px 0;
}

.btn {
  display: inline-block;
  padding: 12px 24px;
  border-radius: 6px;
  font-weight: 600;
  font-size: 15px;
  text-align: center;
  cursor: pointer;
  border: 2px solid transparent;
  transition: transform 0.15s ease, background 0.15s ease;
}

.btn-primary {
  background: var(--accent);
  color: var(--ink);
}

.btn-primary:hover {
  background: var(--accent-dark);
  color: var(--paper);
  transform: translateY(-1px);
}

.btn-outline {
  background: transparent;
  border-color: var(--ink);
  color: var(--ink);
}

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

/* Hero */
.hero {
  padding: 88px 0 72px;
  text-align: center;
}

.hero .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  color: var(--slate);
  margin-bottom: 16px;
}

.hero h1 {
  font-size: clamp(32px, 5vw, 54px);
  max-width: 780px;
  margin: 0 auto 20px;
}

.hero p.lead {
  max-width: 620px;
  margin: 0 auto 32px;
  font-size: 18px;
  color: var(--slate);
}

.hero .hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* Section */
.section {
  padding: 64px 0;
}

.section-alt {
  background: #f2efe9;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 48px;
}

.section-header .eyebrow {
  text-transform: uppercase;
  letter-spacing: 0.12em;
  font-size: 13px;
  color: var(--accent-dark);
  font-weight: 600;
  margin-bottom: 12px;
}

/* Cards / Grid */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 24px;
}

.card {
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 32px;
}

.card .icon {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  background: rgba(45, 212, 191, 0.14);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 20px;
  font-size: 22px;
}

.card h3 {
  font-size: 20px;
  margin-bottom: 10px;
}

.card p {
  color: var(--slate);
  margin-bottom: 0;
  font-size: 15px;
}

/* CTA band */
.cta-band {
  background: var(--ink);
  color: var(--paper);
  border-radius: 14px;
  padding: 56px 40px;
  text-align: center;
}

.cta-band h2 {
  color: var(--paper);
}

.cta-band p {
  color: #cfc9c1;
  max-width: 520px;
  margin: 0 auto 28px;
}

/* Forms */
.form-group {
  margin-bottom: 20px;
  text-align: left;
}

label {
  display: block;
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 6px;
}

input, textarea, select {
  width: 100%;
  padding: 12px 14px;
  border: 1px solid var(--border);
  border-radius: 6px;
  font-family: inherit;
  font-size: 15px;
  background: #fff;
  color: var(--ink);
}

input:focus, textarea:focus, select:focus {
  outline: none;
  border-color: var(--accent-dark);
}

textarea {
  resize: vertical;
  min-height: 140px;
}

.contact-form {
  max-width: 560px;
  margin: 0 auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 40px;
}

/* Optional setup section */
.optional-setup {
  border: 1px solid var(--border);
  border-radius: 8px;
  background: #fcfbf9;
  margin-bottom: 24px;
}

.optional-setup summary {
  cursor: pointer;
  padding: 16px 18px;
  font-family: inherit;
  font-weight: 600;
  font-size: 14px;
  color: var(--accent-dark);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 10px;
}

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

.optional-setup summary::before {
  content: "+";
  flex-shrink: 0;
  width: 18px;
  height: 18px;
  border-radius: 4px;
  background: rgba(45, 212, 191, 0.18);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-size: 15px;
  line-height: 1;
}

.optional-setup[open] summary::before {
  content: "\2212";
}

.optional-body {
  padding: 0 18px 20px;
  border-top: 1px solid var(--border);
}

.optional-note {
  font-size: 13px;
  color: var(--slate);
  margin: 16px 0 20px;
}

/* Checkbox groups */
input[type="checkbox"] {
  width: auto;
  padding: 0;
  border: none;
  margin: 0;
  flex-shrink: 0;
  accent-color: var(--accent-dark);
}

.checkbox-group {
  border: none;
  padding: 0;
  margin: 0 0 22px;
}

.checkbox-group legend {
  padding: 0;
  margin-bottom: 8px;
  font-weight: 600;
  font-size: 14px;
}

.checkbox-item {
  display: flex;
  align-items: center;
  gap: 9px;
  margin-bottom: 7px;
  font-weight: 400;
  font-size: 14px;
  cursor: pointer;
}

.other-input {
  margin-top: 8px;
  font-size: 14px;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 40px 0;
  margin-top: 40px;
}

.site-footer .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
}

.footer-brand {
  display: flex;
  align-items: center;
  gap: 10px;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 700;
  font-size: 15px;
}

.footer-brand img {
  width: 24px;
  height: 24px;
}

.site-footer .tagline {
  color: var(--slate);
  font-size: 13px;
}

.footer-links {
  display: flex;
  gap: 20px;
}

.footer-links a {
  color: var(--slate);
  font-size: 14px;
}

/* Page hero (non-home pages) */
.page-hero {
  padding: 56px 0 40px;
  text-align: center;
}

.page-hero h1 {
  font-size: clamp(28px, 4vw, 40px);
}

.page-hero p {
  color: var(--slate);
  max-width: 600px;
  margin: 0 auto;
}

/* About page */
.about-body {
  max-width: 720px;
  margin: 0 auto;
}

.about-body h2 {
  margin-top: 1.6em;
}

/* Responsive */
@media (max-width: 768px) {
  .nav-toggle {
    display: block;
  }

  .main-nav {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--paper);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    align-items: flex-start;
    padding: 16px 24px 24px;
    gap: 16px;
    display: none;
  }

  .main-nav.open {
    display: flex;
  }

  .site-header .container {
    position: relative;
  }

  .cta-band {
    padding: 40px 24px;
  }

  .contact-form {
    padding: 28px;
  }
}