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

:root {
  --bg:        #0d0d0d;
  --bg-mid:    #141414;
  --bg-alt:    #1a1a1a;
  --text:      #e8e8e8;
  --muted:     #888;
  --accent:    #d4a017;
  --accent-dk: #b8880f;
  --border:    #2a2a2a;
  --radius:    4px;
  --max-w:     860px;
  --font:      'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
  --font-display: 'Inter Tight', 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Helvetica, Arial, sans-serif;
}

html { scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
}

/* ── Layout ───────────────────────────────────────────────── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}

section {
  padding: 80px 0;
  border-bottom: 1px solid var(--border);
}

section:last-of-type { border-bottom: none; }

/* ── Typography ───────────────────────────────────────────── */
h1 { font-family: var(--font-display); font-size: clamp(1.6rem, 4vw, 2.4rem); font-weight: 700; line-height: 1.25; letter-spacing: -0.02em; }
h2 { font-family: var(--font-display); font-size: clamp(1.3rem, 3vw, 1.9rem); font-weight: 700; margin-bottom: 32px; letter-spacing: -0.01em; }
h3 { font-family: var(--font-display); font-size: 1.15rem; font-weight: 700; margin-bottom: 12px; }
h4 { font-size: 1rem; font-weight: 700; color: var(--accent); margin-bottom: 10px; }

p { margin-bottom: 16px; }
p:last-child { margin-bottom: 0; }

.lead { font-size: 1.1rem; }

ul { padding-left: 20px; margin-bottom: 16px; }
li { margin-bottom: 8px; }

/* ── Header ───────────────────────────────────────────────── */
header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(13, 13, 13, 0.92);
  backdrop-filter: blur(8px);
  border-bottom: 1px solid var(--border);
  padding: 16px 0;
}

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

.wordmark {
  font-size: 0.9rem;
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--text);
  flex-shrink: 0;
}

.nav-cta {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--accent);
  text-decoration: none;
  border: 1px solid var(--accent);
  padding: 6px 14px;
  border-radius: var(--radius);
  white-space: nowrap;
  transition: background 0.15s, color 0.15s;
}

.nav-cta:hover {
  background: var(--accent);
  color: #000;
}

/* ── Hero ─────────────────────────────────────────────────── */
.hero {
  padding: 100px 0 90px;
  background: var(--bg-mid);
}

.hero h1 { margin-bottom: 24px; }

.hero-sub {
  font-size: 1.05rem;
  color: var(--muted);
  max-width: 600px;
  margin-bottom: 36px;
}

/* ── Buttons ──────────────────────────────────────────────── */
.btn-primary {
  display: inline-block;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  padding: 13px 26px;
  border-radius: var(--radius);
  border: none;
  cursor: pointer;
  transition: background 0.15s;
}

.btn-primary:hover { background: var(--accent-dk); }

/* ── Phases ───────────────────────────────────────────────── */
.phases {
  display: flex;
  flex-direction: column;
  gap: 48px;
}

.phase {
  padding-left: 20px;
  border-left: 3px solid var(--accent);
}

.phase-label {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 6px;
}

/* ── Differentiators ──────────────────────────────────────── */
#differentiators { background: var(--bg-alt); }

.diff-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 32px;
}

.diff-item {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
}

.diff-item p { color: var(--muted); }

/* ── Who ──────────────────────────────────────────────────── */
#who { background: var(--bg-mid); }

/* ── Who We Are ───────────────────────────────────────────── */
#who-we-are { background: var(--bg-alt); }
#who-we-are .lead { margin-bottom: 40px; }

/* ── Founding client ──────────────────────────────────────── */
.two-col {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  margin: 32px 0;
}

.founding-note {
  font-style: italic;
  color: var(--muted);
  border-left: 3px solid var(--border);
  padding-left: 16px;
  margin-top: 24px;
}

/* ── Contact form ─────────────────────────────────────────── */
#apply { background: var(--bg-alt); }

#contact-form {
  margin-top: 32px;
  max-width: 560px;
}

.field { margin-bottom: 20px; }

label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 6px;
  color: var(--text);
}

input[type="email"],
textarea {
  width: 100%;
  background: var(--bg);
  color: var(--text);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  font-family: var(--font);
  font-size: 0.95rem;
  resize: vertical;
  transition: border-color 0.15s;
}

input[type="email"]:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="email"]::placeholder,
textarea::placeholder {
  color: var(--muted);
}

.form-success {
  margin-top: 16px;
  color: #6fcf97;
  font-weight: 600;
}

.form-error {
  margin-top: 16px;
  color: #eb5757;
}

/* ── Footer ───────────────────────────────────────────────── */
footer {
  padding: 32px 0;
  border-top: 1px solid var(--border);
}

footer span {
  font-size: 0.8rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 700;
}

/* ── Responsive ───────────────────────────────────────────── */
@media (max-width: 640px) {
  section { padding: 56px 0; }
  .hero { padding: 64px 0 56px; }

  .diff-grid { grid-template-columns: 1fr; gap: 20px; }
  .two-col   { grid-template-columns: 1fr; gap: 28px; }

  header .container { flex-wrap: wrap; }
  .wordmark { font-size: 0.8rem; }
}