:root {
  --bg: #0b0d10;
  --bg-alt: #11141a;
  --text: #e5e7eb;
  --muted: #9ca3af;
  --border: #1f2933;
  --accent: #ffffff;
}

/* ======================
   RESET
   ====================== */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.6;
}

/* ======================
   GLOBAL
   ====================== */
a {
  color: inherit;
  text-decoration: none;
}

img {
  max-width: 100%;
  display: block;
}

/* ======================
   HEADER / NAV
   ====================== */
.nav {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(11, 13, 16, 0.9);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
}

.nav-inner {
  max-width: 1100px;
  margin: 0 auto;
  padding: 1rem 1.25rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

/* BRAND */
.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.brand-icon {
  height: 24px;
  width: auto;
}

.brand-text {
  font-weight: 600;
  font-size: 0.95rem;
  letter-spacing: 0.02em;
}

/* NAV LINKS */
nav a {
  margin-left: 1.5rem;
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--muted);
}

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

/* MOBILE TOGGLE */
#navToggle {
  display: none;
  background: none;
  border: none;
  color: var(--text);
  font-size: 1.4rem;
  cursor: pointer;
}

/* ======================
   HERO
   ====================== */
.hero {
  padding: 6rem 1.25rem 5rem;
  text-align: center;
}

.hero-inner {
  max-width: 820px;
  margin: 0 auto;
}

.hero h1 {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 600;
  margin-bottom: 1.25rem;
}

.hero p {
  color: var(--muted);
  font-size: 1rem;
  max-width: 720px;
  margin: 0 auto;
}

/* SEO / GEO identity anchor */
.seo-anchor {
  margin-top: 1rem;
  font-size: 0.85rem;
  color: var(--muted);
}

/* ======================
   SECTIONS
   ====================== */
.section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 4rem 1.25rem;
}

.section.dark {
  background: var(--bg-alt);
}

.section h2 {
  font-size: 1.4rem;
  font-weight: 600;
  margin-bottom: 1rem;
}

.section-intro {
  color: var(--muted);
  margin-bottom: 2rem;
  max-width: 720px;
}

/* ======================
   GRID / CARDS
   ====================== */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 1.5rem;
}

.card {
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, 0.02);
  padding: 1.5rem;
}

.card h3,
.card h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
}

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

.card ul {
  list-style: none;
  margin-top: 0.5rem;
}

.card ul li {
  margin-bottom: 0.35rem;
}

/* ======================
   QUIET TEXT
   ====================== */
.quiet {
  margin-top: 2rem;
  font-size: 0.8rem;
  color: var(--muted);
}

/* ======================
   CONTACT FORM
   ====================== */
.contact-form {
  max-width: 500px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

input,
textarea {
  background: transparent;
  border: 1px solid var(--border);
  padding: 0.75rem;
  color: var(--text);
  font-family: inherit;
  font-size: 0.85rem;
}

input::placeholder,
textarea::placeholder {
  color: var(--muted);
}

textarea {
  resize: vertical;
  min-height: 120px;
}

button {
  background: var(--accent);
  color: #000;
  border: none;
  padding: 0.75rem;
  font-size: 0.85rem;
  font-weight: 600;
  cursor: pointer;
}

button:hover {
  opacity: 0.9;
}

/* ======================
   FOOTER
   ====================== */
.footer {
  padding: 2rem 1.25rem;
  text-align: center;
  font-size: 0.75rem;
  color: var(--muted);
  border-top: 1px solid var(--border);
}

/* ======================
   RESPONSIVE
   ====================== */
@media (max-width: 768px) {
  nav {
    display: none;
  }

  #navToggle {
    display: block;
  }

  .brand-icon {
    height: 20px;
  }

  .hero {
    padding: 4rem 1.25rem;
  }
}