/* === RESET === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
img { max-width: 100%; display: block; }

/* === TOKENS === */
:root {
  --bg:           #050507;
  --bg-card:      #0e0e12;
  --accent:       #a3e635;
  --accent-dim:   #6b9a22;
  --text:         #f0f0f0;
  --text-muted:   #8a8a9a;
  --border:       #1e1e2a;
  --text-on-accent:   #000000;
  --font-serif:   'Instrument Serif', Georgia, serif;
  --font-sans:    'Inter', system-ui, sans-serif;
  --font-mono:    'JetBrains Mono', 'Courier New', monospace;
  --max-width:    1100px;
  --section-gap:  120px;
}

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

h1, h2, h3 { font-family: var(--font-serif); font-weight: 400; line-height: 1.2; }
h1 { font-size: clamp(2.4rem, 5vw, 4rem); }
h2 { font-size: clamp(1.8rem, 3.5vw, 2.8rem); }
h3 { font-size: 1.3rem; }
p { color: var(--text-muted); }
a { color: var(--accent); text-decoration: none; }

.container { max-width: var(--max-width); margin: 0 auto; padding: 0 24px; }
.section { padding: var(--section-gap) 0; }
.mono-label { font-family: var(--font-mono); font-size: 0.75rem; text-transform: uppercase; letter-spacing: 0.12em; color: var(--accent); }
.text-muted { color: var(--text-muted); }

/* === NAV === */
.nav { position: sticky; top: 0; z-index: 100; border-bottom: 1px solid var(--border); background: var(--bg); }
.nav-inner { max-width: var(--max-width); margin: 0 auto; padding: 18px 24px; display: flex; justify-content: space-between; align-items: center; }
.nav-logo { font-family: var(--font-mono); font-size: 0.9rem; color: var(--text); letter-spacing: 0.05em; text-decoration: none; }
.nav-links { display: flex; align-items: center; gap: 24px; }
.nav-link { color: var(--text-muted); font-size: 0.9rem; text-decoration: none; transition: color 0.15s; }
.nav-link:hover { color: var(--text); }

/* === BUTTONS === */
.btn { display: inline-block; padding: 12px 24px; border-radius: 4px; font-family: var(--font-sans); font-size: 0.95rem; font-weight: 500; cursor: pointer; transition: opacity 0.15s; }
.btn:hover { opacity: 0.85; }
.btn-outline:hover { background: rgba(255,255,255,0.05); opacity: 1; }
a:focus-visible, .btn:focus-visible, button:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }
.btn-primary { background: var(--accent); color: var(--text-on-accent); }
.btn-outline { border: 1px solid var(--border); color: var(--text); background: transparent; }

/* === CARD === */
.card { background: var(--bg-card); border: 1px solid var(--border); border-radius: 8px; padding: 32px; }

/* === HERO === */
.hero { padding-top: 100px; padding-bottom: var(--section-gap); border-bottom: 1px solid var(--border); }
.hero-headline { margin: 20px 0 24px; max-width: 800px; }
.hero-sub { font-size: 1.15rem; max-width: 600px; margin-bottom: 40px; }
.hero-cta { display: flex; gap: 16px; flex-wrap: wrap; }

/* === PROBLEM === */
.problem-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); gap: 24px; margin-top: 48px; }
.problem-grid .card h3 { margin-bottom: 12px; color: var(--text); }

/* === GTM STACK === */
.section-intro { font-size: 1.1rem; max-width: 600px; margin: 16px 0 56px; color: var(--text-muted); }
.stack-stages { display: flex; flex-direction: column; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.stage-item { display: grid; grid-template-columns: 80px 1fr; padding: 32px; border-bottom: 1px solid var(--border); transition: background 0.15s; }
.stage-item:last-child { border-bottom: none; }
.stage-item:hover { background: var(--bg-card); }
.stage-number { padding-top: 4px; }
.stage-content h3 { color: var(--text); margin-bottom: 8px; }

/* === OFFER === */
.offer-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 24px; margin-top: 48px; }
.offer-card { display: flex; flex-direction: column; }
.offer-highlight { border-color: var(--accent-dim); }
.offer-list { list-style: none; margin-top: 20px; display: flex; flex-direction: column; gap: 12px; }
.offer-list li { color: var(--text-muted); padding-left: 20px; position: relative; }
.offer-list li::before { content: '/'; position: absolute; left: 0; color: var(--accent); font-family: var(--font-mono); }
@media (max-width: 700px) { .offer-grid { grid-template-columns: 1fr; } }

/* === FIT === */
.fit-grid { display: grid; grid-template-columns: 1fr 1fr; gap: 48px; margin-top: 48px; }
.fit-heading { font-family: var(--font-mono); font-size: 0.8rem; text-transform: uppercase; letter-spacing: 0.1em; margin-bottom: 20px; }
.fit-yes { color: var(--accent); }
.fit-no { color: var(--text-muted); }
.fit-list { list-style: none; display: flex; flex-direction: column; gap: 14px; }
.fit-list li { color: var(--text-muted); padding-left: 20px; position: relative; font-size: 0.97rem; }
.fit-list-yes li::before { content: '✓'; position: absolute; left: 0; color: var(--accent); font-family: var(--font-mono); }
.fit-list-no li::before { content: '✕'; position: absolute; left: 0; color: var(--text-muted); font-family: var(--font-mono); }
@media (max-width: 700px) { .fit-grid { grid-template-columns: 1fr; gap: 32px; } }

/* === ABOUT === */
.about-grid { display: grid; grid-template-columns: 340px 1fr; gap: 80px; align-items: start; }
.about-photo-wrap { position: sticky; top: 100px; }
.about-photo { width: 100%; border-radius: 8px; filter: grayscale(20%); }
.about-content p { margin-bottom: 20px; }
.about-content h2 { margin: 12px 0 24px; }
@media (max-width: 800px) {
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .about-photo-wrap { position: static; max-width: 280px; }
}

/* === FAQ === */
.faq-list { margin-top: 48px; border: 1px solid var(--border); border-radius: 8px; overflow: hidden; }
.faq-item { border-bottom: 1px solid var(--border); }
.faq-item:last-child { border-bottom: none; }
.faq-question { width: 100%; background: none; border: none; color: var(--text); font-family: var(--font-sans); font-size: 1rem; font-weight: 500; padding: 24px 32px; text-align: left; cursor: pointer; display: flex; justify-content: space-between; align-items: center; transition: background 0.15s; }
.faq-question::after { content: '+'; font-family: var(--font-mono); color: var(--accent); font-size: 1.2rem; flex-shrink: 0; margin-left: 16px; }
.faq-item.open .faq-question { background: var(--bg-card); }
.faq-item.open .faq-question::after { content: '-'; }
.faq-answer { display: none; padding: 0 32px 24px; }
.faq-item.open .faq-answer { display: block; }
.faq-answer p { font-size: 0.97rem; color: var(--accent); }

/* === CTA / CONTACT === */
.cta-block { max-width: 700px; }
.cta-block p { margin: 16px 0 40px; font-size: 1.05rem; }
.contact-options { display: flex; flex-direction: column; gap: 24px; }
.contact-or { align-self: flex-start; }
.contact-form { display: flex; flex-direction: column; gap: 14px; width: 100%; max-width: 480px; }
.form-input { background: var(--bg-card); border: 1px solid var(--border); border-radius: 4px; padding: 12px 16px; color: var(--text); font-family: var(--font-sans); font-size: 0.95rem; width: 100%; }
.form-input:focus { outline: none; border-color: var(--accent); }
.form-input::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 100px; }

/* === FOOTER === */
.footer { border-top: 1px solid var(--border); padding: 32px 0; }
.footer .container { display: flex; justify-content: space-between; align-items: center; gap: 16px; flex-wrap: wrap; }
.footer-links { display: flex; gap: 24px; }
.footer-link { color: var(--text-muted); font-size: 0.85rem; text-decoration: none; }
.footer-link:hover { color: var(--text); }

/* === BLOG === */
.section-intro { color: var(--text-muted); max-width: 600px; margin-top: 16px; }
.blog-grid { display: grid; grid-template-columns: repeat(auto-fill, minmax(300px, 1fr)); gap: 24px; margin-top: 48px; }
.blog-card { display: flex; flex-direction: column; gap: 12px; }
.blog-card h3 { color: var(--text); font-size: 1.1rem; line-height: 1.4; }

/* === RESPONSIVE === */
@media (max-width: 600px) {
  :root { --section-gap: 72px; }
  .hero-cta { flex-direction: column; }
  .hero-cta .btn { text-align: center; }
  .stage-item { grid-template-columns: 48px 1fr; padding: 24px 20px; }
  .faq-question { padding: 20px; }
  .faq-answer { padding: 0 20px 20px; }
  .about-photo-wrap { max-width: 200px; }
  .nav-inner { padding: 14px 20px; }
  .nav-link { display: none; }
  .blog-grid { grid-template-columns: 1fr; }
  .contact-form { max-width: 100%; }
}