/* ==========================================================================
   codificandoméxico — design tokens
   ========================================================================== */

:root {
  --surface: #F4F6F7;
  --surface-card: #FFFFFF;
  --text: #14181D;
  --text-muted: #5B6470;
  --border: #E3E7E9;

  --ink: #15181D;
  --ink-card: #20252D;
  --ink-text: #F4F6F7;
  --ink-muted: #9AA3AC;
  --ink-border: #2E343C;

  --accent: #FF6A1A;
  --accent-strong: #E0570D;
  --accent-tint: #FFE7D6;

  --font-display: 'Montserrat', 'Segoe UI', sans-serif;
  --font-body: 'Inter', 'Segoe UI', sans-serif;
  --font-mono: 'Roboto Mono', 'Consolas', monospace;

  --radius: 10px;
  --radius-sm: 6px;
  --shadow-card: 0 1px 2px rgba(20, 24, 29, 0.04), 0 8px 24px -12px rgba(20, 24, 29, 0.12);
  --max-width: 1180px;
}

@media (prefers-color-scheme: dark) {
  :root {
    --surface: #101317;
    --surface-card: #1A1E24;
    --text: #EDEFF1;
    --text-muted: #9AA3AC;
    --border: #2A2F36;
    --accent-tint: rgba(255, 106, 26, 0.16);
  }
}

:root[data-theme="dark"] {
  --surface: #101317;
  --surface-card: #1A1E24;
  --text: #EDEFF1;
  --text-muted: #9AA3AC;
  --border: #2A2F36;
  --accent-tint: rgba(255, 106, 26, 0.16);
}

:root[data-theme="light"] {
  --surface: #F4F6F7;
  --surface-card: #FFFFFF;
  --text: #14181D;
  --text-muted: #5B6470;
  --border: #E3E7E9;
  --accent-tint: #FFE7D6;
}

/* ==========================================================================
   Reset & base
   ========================================================================== */

*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation-duration: 0.01ms !important; animation-iteration-count: 1 !important; transition-duration: 0.01ms !important; }
}

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 16px;
  line-height: 1.6;
  color: var(--text);
  background: var(--surface);
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 { font-family: var(--font-display); margin: 0; text-wrap: balance; }
p { margin: 0; }
a { color: inherit; text-decoration: none; }
ul { list-style: none; margin: 0; padding: 0; }
img { max-width: 100%; display: block; }
svg { display: block; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

.wrap {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.eyebrow {
  font-family: var(--font-mono);
  font-size: 12px;
  font-weight: 500;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 14px;
}

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

.section-title {
  font-size: clamp(1.6rem, 1.2rem + 1.6vw, 2.25rem);
  font-weight: 800;
  line-height: 1.2;
  letter-spacing: -0.01em;
  margin-bottom: 16px;
  max-width: 32ch;
}

.section-lead {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 58ch;
  margin-bottom: 48px;
}

/* ==========================================================================
   Buttons
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 0.95rem;
  padding: 13px 26px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform 0.15s ease, background-color 0.15s ease, border-color 0.15s ease, box-shadow 0.15s ease;
  white-space: nowrap;
}

.btn-primary {
  background: var(--accent);
  color: #17130E;
}
.btn-primary:hover {
  background: var(--accent-strong);
  transform: translateY(-1px);
  box-shadow: 0 8px 20px -8px rgba(255, 106, 26, 0.55);
}

.btn-ghost {
  background: transparent;
  border-color: var(--ink-border);
  color: var(--ink-text);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
}

.btn-sm { padding: 10px 18px; font-size: 0.875rem; }
.btn-block { width: 100%; padding: 14px 26px; }

/* ==========================================================================
   Header
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  background: color-mix(in srgb, var(--surface-card) 92%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid var(--border);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 72px;
}

.logo {
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 1.15rem;
  letter-spacing: -0.01em;
  color: var(--text);
}
.logo-accent { color: var(--accent); }

.nav {
  display: flex;
  gap: 36px;
}
.nav a {
  font-size: 0.9rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color 0.15s ease;
}
.nav a:hover { color: var(--text); }

.header-actions {
  display: flex;
  align-items: center;
  gap: 16px;
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 32px;
  height: 32px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 0;
}
.nav-toggle span {
  display: block;
  height: 2px;
  width: 100%;
  background: var(--text);
  border-radius: 2px;
}

/* ==========================================================================
   Hero
   ========================================================================== */

.hero {
  position: relative;
  background: var(--ink);
  color: var(--ink-text);
  overflow: hidden;
  padding: 88px 0 64px;
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(to right, var(--ink-border) 1px, transparent 1px),
    linear-gradient(to bottom, var(--ink-border) 1px, transparent 1px);
  background-size: 48px 48px;
  -webkit-mask-image: radial-gradient(ellipse 80% 60% at 30% 30%, black 10%, transparent 75%);
  mask-image: radial-gradient(ellipse 80% 60% at 30% 30%, black 10%, transparent 75%);
  opacity: 0.7;
}

.hero-inner {
  position: relative;
  display: grid;
  grid-template-columns: 1.1fr 0.9fr;
  gap: 48px;
  align-items: center;
}

.hero-title {
  font-size: clamp(2.1rem, 1.5rem + 2.6vw, 3.4rem);
  font-weight: 800;
  line-height: 1.12;
  letter-spacing: -0.015em;
  margin-bottom: 22px;
}

.hero-subtitle {
  font-size: 1.05rem;
  color: var(--ink-muted);
  max-width: 46ch;
  margin-bottom: 34px;
}

.hero-ctas {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-stats {
  display: flex;
  gap: 40px;
  margin: 0;
  padding-top: 28px;
  border-top: 1px solid var(--ink-border);
}
.hero-stats dt {
  font-family: var(--font-mono);
  font-size: 1.6rem;
  font-weight: 500;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
}
.hero-stats dd {
  margin: 4px 0 0;
  font-size: 0.82rem;
  color: var(--ink-muted);
}

/* --- Modular diagram --- */

.hero-diagram {
  position: relative;
  width: 100%;
  aspect-ratio: 1 / 1;
  max-width: 380px;
  margin: 0 auto;
}

.diagram-lines {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
}
.diagram-lines line {
  stroke: var(--ink-border);
  stroke-width: 1.5;
}

.node {
  position: absolute;
  top: var(--y);
  left: var(--x);
  transform: translate(-50%, -50%);
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.02em;
  white-space: nowrap;
  border-radius: 999px;
  padding: 9px 16px;
  border: 1px solid var(--ink-border);
  background: var(--ink-card);
  color: var(--ink-muted);
}

.node-hub {
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  background: var(--accent);
  color: #17130E;
  border-color: var(--accent);
  font-family: var(--font-display);
  font-weight: 800;
  font-size: 0.85rem;
  padding: 16px 22px;
  box-shadow: 0 0 0 6px var(--accent-tint), 0 0 40px -6px rgba(255, 106, 26, 0.55);
  animation: pulse-hub 3.2s ease-in-out infinite;
}

@keyframes pulse-hub {
  0%, 100% { box-shadow: 0 0 0 6px var(--accent-tint), 0 0 40px -6px rgba(255, 106, 26, 0.55); }
  50% { box-shadow: 0 0 0 10px var(--accent-tint), 0 0 55px -4px rgba(255, 106, 26, 0.7); }
}

/* ==========================================================================
   Services
   ========================================================================== */

.services { padding: 96px 0; }

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.card {
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px 28px;
  box-shadow: var(--shadow-card);
  transition: transform 0.2s ease, border-color 0.2s ease;
}
.card:hover {
  transform: translateY(-4px);
  border-color: var(--accent);
}

.card-icon {
  width: 48px;
  height: 48px;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--accent-tint);
  color: var(--accent-strong);
  margin-bottom: 20px;
}
.card-icon svg { width: 24px; height: 24px; }

.card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 10px;
}
.card p {
  color: var(--text-muted);
  font-size: 0.95rem;
}

/* ==========================================================================
   About
   ========================================================================== */

.about {
  padding: 96px 0;
  background: var(--surface-card);
  border-top: 1px solid var(--border);
  border-bottom: 1px solid var(--border);
}

.about-inner {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: start;
}

.about-copy p + p { margin-top: 16px; }
.about-copy p { color: var(--text-muted); }

.about-stats {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
}

.stat-card {
  padding: 24px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.stat-number {
  font-family: var(--font-mono);
  font-size: 1.9rem;
  font-weight: 500;
  color: var(--accent-strong);
  font-variant-numeric: tabular-nums;
}
.stat-label {
  font-size: 0.85rem;
  color: var(--text-muted);
}

/* ==========================================================================
   Contact
   ========================================================================== */

.contact { padding: 96px 0; }

.contact-inner {
  display: grid;
  grid-template-columns: 1.3fr 0.9fr;
  gap: 40px;
  align-items: start;
}

.contact-form-wrap .section-lead { margin-bottom: 32px; }

.contact-form {
  display: grid;
  gap: 18px;
  background: var(--surface-card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 32px;
  box-shadow: var(--shadow-card);
}

.form-row { display: grid; gap: 6px; }

.form-row label {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text);
}

.form-row input,
.form-row textarea {
  font-family: var(--font-body);
  font-size: 0.95rem;
  padding: 12px 14px;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
  resize: vertical;
  transition: border-color 0.15s ease, box-shadow 0.15s ease;
}
.form-row input:focus,
.form-row textarea:focus {
  outline: none;
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--accent-tint);
}

.form-note {
  min-height: 1.2em;
  font-size: 0.88rem;
  color: var(--accent-strong);
  font-weight: 500;
}

.contact-info {
  background: var(--ink);
  color: var(--ink-text);
  border-radius: var(--radius);
  padding: 32px;
}

.contact-info ul { display: grid; gap: 22px; margin-top: 8px; }
.contact-info li { display: grid; gap: 4px; }

.contact-label {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--ink-muted);
}
.contact-info a,
.contact-info span:not(.contact-label) {
  font-size: 1rem;
  font-weight: 500;
}
.contact-info a:hover { color: var(--accent); }

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background: var(--ink);
  color: var(--ink-muted);
  border-top: 1px solid var(--ink-border);
  padding: 32px 0;
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  flex-wrap: wrap;
}

.logo-footer { color: var(--ink-text); font-size: 1rem; }

.footer-copy { font-size: 0.85rem; }

.footer-links { display: flex; gap: 24px; }
.footer-links a { font-size: 0.85rem; transition: color 0.15s ease; }
.footer-links a:hover { color: var(--accent); }

/* ==========================================================================
   Responsive
   ========================================================================== */

@media (max-width: 960px) {
  .hero-inner { grid-template-columns: 1fr; }
  .hero-diagram { max-width: 340px; margin-top: 16px; }
  .about-inner { grid-template-columns: 1fr; }
  .contact-inner { grid-template-columns: 1fr; }
  .card-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 720px) {
  .nav {
    position: absolute;
    top: 72px;
    left: 0;
    right: 0;
    background: var(--surface-card);
    border-bottom: 1px solid var(--border);
    flex-direction: column;
    gap: 0;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.25s ease;
  }
  .nav.is-open { max-height: 260px; }
  .nav a {
    padding: 16px 24px;
    border-top: 1px solid var(--border);
  }
  .nav-toggle { display: flex; }
  .header-actions .btn-sm { display: none; }

  .card-grid { grid-template-columns: 1fr; }
  .about-stats { grid-template-columns: 1fr 1fr; }
  .hero-stats { gap: 24px; flex-wrap: wrap; }
  .footer-inner { flex-direction: column; text-align: center; }
}

@media (max-width: 480px) {
  .about-stats { grid-template-columns: 1fr; }
  .hero { padding: 64px 0 48px; }
  .services, .about, .contact { padding: 64px 0; }
}