/* DNAGPT.info — Styles */

:root {
  --primary:       #0f172a;
  --accent:        #3b82f6;
  --accent-light:  #eff6ff;
  --teal:          #0ea5e9;
  --green:         #10b981;
  --green-light:   #ecfdf5;
  --amber:         #f59e0b;
  --red-light:     #fef2f2;
  --red:           #ef4444;
  --bg:            #ffffff;
  --bg-alt:        #f8fafc;
  --bg-dark:       #0f172a;
  --text:          #1e293b;
  --text-light:    #64748b;
  --border:        #e2e8f0;
  --radius:        12px;
  --radius-lg:     20px;
  --shadow:        0 4px 6px -1px rgba(0,0,0,.08), 0 2px 4px -1px rgba(0,0,0,.04);
  --shadow-lg:     0 10px 25px -5px rgba(0,0,0,.1), 0 4px 10px -5px rgba(0,0,0,.06);
  --font:          'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --max-w:         1100px;
}

/* ── Reset ── */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body { font-family: var(--font); color: var(--text); background: var(--bg); line-height: 1.6; }
img { max-width: 100%; display: block; }
a { color: inherit; text-decoration: none; }

/* ── Language switching ── */
html[lang="es"] .en { display: none; }
html[lang="en"] .es { display: none; }

/* ── Layout helpers ── */
.container { max-width: var(--max-w); margin: 0 auto; padding: 0 24px; }
.section    { padding: 80px 0; }
.section-alt { background: var(--bg-alt); }
.section-dark { background: var(--bg-dark); color: #f8fafc; }

/* ── Typography ── */
h1 { font-size: clamp(2rem, 5vw, 3.25rem); font-weight: 800; line-height: 1.15; letter-spacing: -.02em; }
h2 { font-size: clamp(1.5rem, 3vw, 2.25rem); font-weight: 700; line-height: 1.25; letter-spacing: -.015em; }
h3 { font-size: 1.2rem; font-weight: 600; line-height: 1.35; }
p  { font-size: 1.05rem; color: var(--text-light); }
.section-dark p { color: #94a3b8; }

.label {
  display: inline-block;
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  color: var(--accent);
  background: var(--accent-light);
  padding: 4px 12px;
  border-radius: 99px;
  margin-bottom: 16px;
}
.label-green {
  color: var(--green);
  background: var(--green-light);
}

/* ── NAV ── */
nav {
  position: sticky;
  top: 0;
  z-index: 100;
  background: rgba(255,255,255,.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav-inner {
  display: flex;
  align-items: center;
  gap: 32px;
  height: 64px;
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 24px;
}
.nav-logo {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--primary);
  flex-shrink: 0;
}
.nav-logo span { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 24px;
  flex: 1;
}
.nav-links a {
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-light);
  transition: color .15s;
}
.nav-links a:hover { color: var(--primary); }
.nav-actions {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-shrink: 0;
}
.btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .875rem;
  font-weight: 600;
  padding: 8px 18px;
  border-radius: 8px;
  transition: all .15s;
  cursor: pointer;
  border: none;
}
.btn-primary { background: var(--accent); color: #fff; }
.btn-primary:hover { background: #2563eb; }
.btn-outline {
  background: transparent;
  color: var(--text);
  border: 1.5px solid var(--border);
}
.btn-outline:hover { border-color: var(--accent); color: var(--accent); }
.btn-ghost {
  background: transparent;
  color: var(--text-light);
  font-weight: 700;
  font-size: .8rem;
  letter-spacing: .05em;
  padding: 6px 10px;
  border: 1.5px solid var(--border);
  border-radius: 6px;
}
.btn-ghost:hover { color: var(--primary); border-color: var(--primary); }

/* ── HERO ── */
.hero {
  background: linear-gradient(135deg, #0f172a 0%, #1e3a5f 60%, #0f2d4a 100%);
  color: #fff;
  padding: 100px 0 80px;
  text-align: center;
  position: relative;
  overflow: hidden;
}
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse at 30% 50%, rgba(59,130,246,.15) 0%, transparent 60%),
              radial-gradient(ellipse at 70% 20%, rgba(14,165,233,.1) 0%, transparent 50%);
}
.hero .container { position: relative; }
.hero .label {
  background: rgba(255,255,255,.1);
  color: #93c5fd;
}
.hero h1 { color: #fff; margin-bottom: 20px; }
.hero h1 span { color: #60a5fa; }
.hero .subtitle {
  font-size: 1.2rem;
  color: #94a3b8;
  max-width: 640px;
  margin: 0 auto 40px;
}
.hero-actions { display: flex; gap: 12px; justify-content: center; flex-wrap: wrap; }
.btn-hero-primary {
  background: var(--accent);
  color: #fff;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: 10px;
}
.btn-hero-primary:hover { background: #2563eb; }
.btn-hero-secondary {
  background: rgba(255,255,255,.08);
  color: #e2e8f0;
  font-size: 1rem;
  padding: 14px 28px;
  border-radius: 10px;
  border: 1.5px solid rgba(255,255,255,.15);
}
.btn-hero-secondary:hover { background: rgba(255,255,255,.14); }
.hero-badges {
  display: flex;
  gap: 24px;
  justify-content: center;
  margin-top: 48px;
  flex-wrap: wrap;
}
.hero-badge {
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: .85rem;
  color: #94a3b8;
}
.hero-badge .dot {
  width: 8px; height: 8px;
  border-radius: 50%;
  background: var(--green);
  flex-shrink: 0;
}

/* ── FORMATS ── */
.formats-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
  margin-top: 48px;
}
.format-card {
  background: var(--bg);
  border: 1.5px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 32px;
  transition: box-shadow .2s, border-color .2s;
}
.format-card:hover { box-shadow: var(--shadow-lg); border-color: var(--accent); }
.format-icon {
  width: 48px; height: 48px;
  border-radius: 12px;
  display: flex; align-items: center; justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 20px;
}
.format-icon.blue  { background: var(--accent-light); }
.format-icon.teal  { background: #f0f9ff; }
.format-icon.green { background: var(--green-light); }
.format-card h3 { margin-bottom: 10px; }
.format-card p  { font-size: .95rem; margin-bottom: 16px; }
.format-tag {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .75rem;
  font-weight: 600;
  color: var(--text-light);
  background: var(--bg-alt);
  padding: 4px 10px;
  border-radius: 6px;
  font-family: 'Courier New', monospace;
}

/* ── STEPS ── */
.steps { margin-top: 56px; }
.step {
  display: grid;
  grid-template-columns: 72px 1fr;
  gap: 24px;
  margin-bottom: 40px;
  align-items: start;
}
.step-number {
  width: 56px; height: 56px;
  border-radius: 50%;
  background: var(--accent);
  color: #fff;
  font-size: 1.3rem;
  font-weight: 800;
  display: flex; align-items: center; justify-content: center;
  flex-shrink: 0;
  box-shadow: 0 0 0 8px var(--accent-light);
}
.step-content h3 { margin-bottom: 8px; }
.step-content p  { margin-bottom: 12px; font-size: .95rem; }

/* Prompts box */
.prompts-box {
  background: #0f172a;
  border-radius: var(--radius);
  padding: 20px 24px;
  margin-top: 16px;
}
.prompts-box .prompt-label {
  font-size: .7rem;
  font-weight: 700;
  letter-spacing: .1em;
  text-transform: uppercase;
  color: #475569;
  margin-bottom: 12px;
}
.prompt {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  margin-bottom: 10px;
}
.prompt:last-child { margin-bottom: 0; }
.prompt-arrow { color: #60a5fa; font-weight: 700; flex-shrink: 0; margin-top: 2px; }
.prompt p {
  font-size: .875rem;
  color: #e2e8f0;
  font-family: 'Courier New', monospace;
  line-height: 1.5;
}

/* ── CAPABILITIES ── */
.capabilities-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 48px;
}
.cap-card {
  border-radius: var(--radius-lg);
  padding: 32px;
}
.cap-card.can  { background: var(--green-light); }
.cap-card.cant { background: var(--red-light); }
.cap-card h3 { margin-bottom: 20px; }
.cap-card.can  h3 { color: #065f46; }
.cap-card.cant h3 { color: #991b1b; }
.cap-list { list-style: none; display: flex; flex-direction: column; gap: 10px; }
.cap-list li {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  font-size: .95rem;
}
.cap-list li .icon { flex-shrink: 0; margin-top: 2px; }
.cap-card.can  .icon { color: var(--green); }
.cap-card.cant .icon { color: var(--red); }

/* ── PRIVACY ── */
.privacy-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
  gap: 20px;
  margin-top: 48px;
}
.privacy-card {
  background: rgba(255,255,255,.05);
  border: 1px solid rgba(255,255,255,.08);
  border-radius: var(--radius);
  padding: 24px;
}
.privacy-card .privacy-icon { font-size: 1.75rem; margin-bottom: 14px; }
.privacy-card h3 { color: #f1f5f9; font-size: 1rem; margin-bottom: 8px; }
.privacy-card p  { font-size: .875rem; color: #94a3b8; }

/* ── CTA ── */
.cta-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 24px;
  margin-top: 56px;
}
.cta-card {
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}
.cta-card.kit    { background: linear-gradient(135deg, #0f172a, #1e3a5f); color: #fff; }
.cta-card.course { background: linear-gradient(135deg, #ecfdf5, #d1fae5); }
.cta-card .cta-label {
  font-size: .75rem;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
}
.cta-card.kit    .cta-label { color: #60a5fa; }
.cta-card.course .cta-label { color: var(--green); }
.cta-card h3 { font-size: 1.4rem; }
.cta-card.kit    h3 { color: #fff; }
.cta-card.course h3 { color: #065f46; }
.cta-card p  { font-size: .95rem; }
.cta-card.kit    p { color: #94a3b8; }
.cta-card.course p { color: #047857; }
.btn-cta-kit {
  margin-top: auto;
  align-self: flex-start;
  background: var(--accent);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: background .15s;
}
.btn-cta-kit:hover { background: #2563eb; }
.btn-cta-course {
  margin-top: auto;
  align-self: flex-start;
  background: var(--green);
  color: #fff;
  padding: 12px 24px;
  border-radius: 8px;
  font-weight: 600;
  font-size: .95rem;
  transition: background .15s;
}
.btn-cta-course:hover { background: #059669; }

/* ── FOOTER ── */
footer {
  background: #020617;
  color: #64748b;
  padding: 48px 0 32px;
}
.footer-inner {
  display: flex;
  flex-direction: column;
  gap: 32px;
}
.footer-top {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  flex-wrap: wrap;
  gap: 24px;
}
.footer-logo { font-size: 1.1rem; font-weight: 800; color: #f1f5f9; }
.footer-logo span { color: var(--accent); }
.footer-links {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}
.footer-links a {
  font-size: .875rem;
  color: #64748b;
  transition: color .15s;
}
.footer-links a:hover { color: #f1f5f9; }
.footer-bottom {
  border-top: 1px solid #1e293b;
  padding-top: 24px;
  font-size: .8rem;
  line-height: 1.7;
}

/* ── Section header ── */
.section-header { margin-bottom: 0; }
.section-header h2 { margin-bottom: 12px; }
.section-header .subtitle { max-width: 580px; }

/* ── Responsive ── */
@media (max-width: 768px) {
  .section { padding: 56px 0; }
  .nav-links { display: none; }
  .capabilities-grid { grid-template-columns: 1fr; }
  .cta-grid { grid-template-columns: 1fr; }
  .step { grid-template-columns: 56px 1fr; }
  .footer-top { flex-direction: column; }
}

@media (max-width: 480px) {
  .hero { padding: 64px 0 56px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-badges { flex-direction: column; align-items: center; gap: 12px; }
}