/* =====================================================
   NOELIA CASADO — Portfolio
   El propio sitio está construido como un design system:
   tokens → primitivas → componentes.
   ===================================================== */

/* ---------- 1. TOKENS ---------- */
:root {
  /* Color primitives */
  --indigo-500: #5b5bd6;
  --indigo-400: #7c7cf0;
  --indigo-100: #e2e2fb;
  --lime-400: #c8f04c;
  --coral-400: #ff7a59;

  /* Semantic — light */
  --bg: #faf9f7;
  --bg-alt: #f0eeea;
  --surface: #ffffff;
  --text: #1a1a22;
  --text-muted: #5c5c66;
  --border: #e3e1dc;
  --accent: var(--indigo-500);
  --accent-soft: var(--indigo-100);
  --accent-contrast: #ffffff;

  /* Type */
  --font-display: 'Space Grotesk', system-ui, sans-serif;
  --font-body: 'Inter', system-ui, sans-serif;
  --font-mono: 'JetBrains Mono', ui-monospace, monospace;

  /* Scale */
  --space-1: .25rem;
  --space-2: .5rem;
  --space-3: .75rem;
  --space-4: 1rem;
  --space-6: 1.5rem;
  --space-8: 2rem;
  --space-12: 3rem;
  --space-20: 5rem;

  --radius-sm: 8px;
  --radius-md: 14px;
  --radius-lg: 22px;
  --radius-full: 999px;

  --shadow-card: 0 1px 2px rgb(20 20 30 / .05), 0 8px 24px rgb(20 20 30 / .06);
  --shadow-card-hover: 0 2px 4px rgb(20 20 30 / .06), 0 16px 40px rgb(20 20 30 / .12);

  --ease-out: cubic-bezier(.22, 1, .36, 1);
}

[data-theme="dark"] {
  --bg: #121217;
  --bg-alt: #1a1a21;
  --surface: #1f1f28;
  --text: #f2f1ee;
  --text-muted: #a3a3ad;
  --border: #2d2d38;
  --accent: var(--indigo-400);
  --accent-soft: #2b2b4a;
  --accent-contrast: #121217;
  --shadow-card: 0 1px 2px rgb(0 0 0 / .3), 0 8px 24px rgb(0 0 0 / .35);
  --shadow-card-hover: 0 2px 4px rgb(0 0 0 / .35), 0 16px 48px rgb(0 0 0 / .5);
}

/* ---------- 2. BASE ---------- */
*, *::before, *::after { box-sizing: border-box; }

html { scroll-behavior: smooth; }

body {
  margin: 0;
  font-family: var(--font-body);
  font-size: 1.0625rem;
  line-height: 1.65;
  color: var(--text);
  background: var(--bg);
  transition: background-color .3s, color .3s;
  -webkit-font-smoothing: antialiased;
}

h1, h2, h3 {
  font-family: var(--font-display);
  line-height: 1.1;
  margin: 0;
  text-wrap: balance;
}

p { margin: 0; }
a { color: inherit; }
ul { margin: 0; padding: 0; list-style: none; }
code { font-family: var(--font-mono); }

.container {
  width: min(1120px, 100% - 3rem);
  margin-inline: auto;
}

.skip-link {
  position: absolute;
  top: -100px;
  left: var(--space-4);
  padding: var(--space-2) var(--space-4);
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: var(--radius-sm);
  z-index: 100;
  transition: top .2s;
}
.skip-link:focus { top: var(--space-4); }

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

::selection { background: var(--accent); color: var(--accent-contrast); }

/* ---------- 3. HEADER ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 80%, transparent);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--space-6);
  padding-block: var(--space-3);
}

.logo {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: .95rem;
  margin-right: auto;
}

.logo-token {
  display: grid;
  place-items: center;
  width: 34px;
  height: 34px;
  background: var(--accent);
  color: var(--accent-contrast);
  border-radius: var(--radius-sm);
  font-weight: 500;
}

.logo-name { color: var(--text-muted); }

.nav-links {
  display: flex;
  gap: var(--space-6);
}

.nav-links a {
  text-decoration: none;
  font-size: .95rem;
  font-weight: 500;
  color: var(--text-muted);
  transition: color .2s;
}
.nav-links a:hover { color: var(--text); }

.theme-toggle {
  display: grid;
  place-items: center;
  width: 38px;
  height: 38px;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: var(--surface);
  color: var(--text);
  cursor: pointer;
  transition: border-color .2s;
}
.theme-toggle:hover { border-color: var(--accent); }
.icon-moon { display: none; }
[data-theme="dark"] .icon-moon { display: block; }
[data-theme="dark"] .icon-sun { display: none; }

/* ---------- 4. HERO ---------- */
.hero {
  padding-block: clamp(4rem, 10vh, 7rem) var(--space-12);
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-size: .9rem;
  font-weight: 500;
  color: var(--text-muted);
  border: 1px solid var(--border);
  background: var(--surface);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
  margin-bottom: var(--space-8);
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #3dba6f;
  box-shadow: 0 0 0 4px rgb(61 186 111 / .2);
}

.hero-title {
  font-size: clamp(2.6rem, 7vw, 5.2rem);
  font-weight: 700;
  letter-spacing: -.02em;
  max-width: 18ch;
}

.hero-title em {
  font-style: normal;
  color: var(--accent);
  position: relative;
}

.hero-subtitle {
  margin-top: var(--space-6);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 56ch;
}
.hero-subtitle strong { color: var(--text); font-weight: 600; }

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* Botones — componente */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-full);
  font-weight: 600;
  font-size: 1rem;
  text-decoration: none;
  transition: transform .2s var(--ease-out), box-shadow .2s, background-color .2s;
}
.btn:active { transform: scale(.97); }

.btn-primary {
  background: var(--accent);
  color: var(--accent-contrast);
}
.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 20px color-mix(in srgb, var(--accent) 35%, transparent);
}

.btn-ghost {
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

.btn-lg { padding: var(--space-4) var(--space-8); font-size: 1.1rem; }

/* Tira de tokens */
.token-strip {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: var(--space-12);
}

.token-strip code {
  font-size: .8rem;
  color: var(--text-muted);
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}

/* ---------- 5. MARQUEE ---------- */
.marquee {
  overflow: hidden;
  border-block: 1px solid var(--border);
  padding-block: var(--space-4);
  background: var(--bg-alt);
}

.marquee-track {
  display: flex;
  gap: var(--space-6);
  width: 100%;
  animation: none;
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 500;
  white-space: nowrap;
  justify-content: center;
  align-items: center;
}

.marquee-track .dot { color: var(--accent); }

@keyframes marquee {
  to { transform: translateX(-50%); }
}

/* ---------- 6. SECCIONES ---------- */
.section { padding-block: var(--space-20); }
.section-alt { background: var(--bg-alt); }

.section-header { margin-bottom: var(--space-12); }

.section-index {
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--accent);
  display: block;
  margin-bottom: var(--space-2);
}

.section-header h2 {
  font-size: clamp(2rem, 4.5vw, 3.2rem);
  letter-spacing: -.02em;
}

.section-header p {
  margin-top: var(--space-3);
  color: var(--text-muted);
  font-size: 1.1rem;
  max-width: 52ch;
}

/* ---------- 7. PROYECTOS ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-6);
}

.card-featured { grid-column: span 2; }

.project-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-card);
  transition: transform .3s var(--ease-out), box-shadow .3s;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card-hover);
}

.project-card:has(.card-link:focus-visible) {
  outline: 3px solid var(--accent);
  outline-offset: 3px;
}

.card-link:focus-visible {
  outline: none;
}

.card-link {
  display: flex;
  flex-direction: column;
  height: 100%;
  text-decoration: none;
}

.card-visual {
  display: grid;
  place-items: center;
  min-height: 220px;
  padding: var(--space-8);
  overflow: hidden;
}
.card-featured .card-visual { min-height: 300px; }

.visual-sepe       { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-trama      { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-sinapsis   { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-mahou      { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-dcampo     { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-aliexpress { background: linear-gradient(135deg, #f5f1ed, #ede5db); }
.visual-audit      { background: linear-gradient(135deg, #f5f1ed, #ede5db); }

/* Mockups CSS dentro de las tarjetas */
.mock-ds {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: rgba(100, 80, 60, 0.15);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(100, 80, 60, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  width: min(420px, 100%);
  transition: transform .4s var(--ease-out);
}
.project-card:hover .mock-ds { transform: translateY(-6px) rotate(-1deg); }

.mock-swatches { display: flex; gap: var(--space-2); }
.mock-swatches span {
  width: 28px; height: 28px; border-radius: var(--radius-sm);
  background: #5b5bd6;
}
.mock-swatches span:nth-child(1) { opacity: 1; }
.mock-swatches span:nth-child(2) { opacity: .85; }
.mock-swatches span:nth-child(3) { opacity: .7; }
.mock-swatches span:nth-child(4) { opacity: .55; }
.mock-swatches span:nth-child(5) { opacity: .4; }

.mock-component { display: flex; flex-direction: column; gap: var(--space-1); }
.mock-label {
  font-family: var(--font-mono);
  font-size: .7rem;
  color: #666;
}
.mock-btn {
  background: #5b5bd6;
  color: #fff;
  font-weight: 600;
  font-size: .9rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  width: fit-content;
}
.mock-input {
  border: 1.5px solid #c9c1e8;
  color: #333;
  font-size: .9rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
  width: min(260px, 100%);
}

.mock-ui {
  width: min(280px, 100%);
  background: rgba(100, 80, 60, 0.15);
  border: 1px solid rgba(100, 80, 60, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  transition: transform .4s var(--ease-out);
}
.project-card:hover .mock-ui { transform: translateY(-6px); }

.mock-bar { height: 10px; width: 70%; background: #5b5bd6; border-radius: var(--radius-full); }
.mock-bar.short { width: 45%; }
.mock-cols { display: flex; gap: var(--space-2); }
.mock-cols span { flex: 1; height: 56px; background: #c9c1e8; border-radius: var(--radius-sm); }
.mock-hero-block { height: 72px; background: #c9c1e8; border-radius: var(--radius-sm); }

.mock-tokens {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  transition: transform .4s var(--ease-out);
}
.project-card:hover .mock-tokens { transform: translateY(-6px); }
.mock-tokens code {
  background: rgba(100, 80, 60, 0.15);
  border: 1px solid rgba(100, 80, 60, 0.3);
  color: #333;
  font-size: .8rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}
.mock-tokens code:nth-child(2) { margin-left: var(--space-6); }
.mock-tokens code:nth-child(3) { margin-left: var(--space-3); }

.mock-flow {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: #333;
}
.mock-flow span:not(.arrow) {
  width: 44px; height: 44px;
  background: #c9c1e8;
  border: 1px solid rgba(100, 80, 60, 0.3);
  border-radius: var(--radius-sm);
}
.mock-flow .arrow { font-size: 1.2rem; }

.mock-before-after {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-family: var(--font-mono);
  font-size: .85rem;
  color: #666;
}
.ba-divider { width: 1px; height: 60px; background: rgba(100, 80, 60, 0.3); }
.ba-label.after { font-weight: 600; color: #333; }

.mock-dashboard {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  background: rgba(100, 80, 60, 0.15);
  backdrop-filter: blur(4px);
  border: 1px solid rgba(100, 80, 60, 0.3);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  width: min(360px, 100%);
  transition: transform .4s var(--ease-out);
}
.project-card:hover .mock-dashboard { transform: translateY(-6px) rotate(-.5deg); }

.mock-stats {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}
.mock-stats span {
  height: 44px;
  background: #c9c1e8;
  border-radius: var(--radius-sm);
}

.mock-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 80px;
}
.mock-chart .bar {
  flex: 1;
  background: #5b5bd6;
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
}

.card-body {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-6);
}

.card-meta {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.card-year {
  margin-left: auto;
  font-family: var(--font-mono);
  font-size: .85rem;
  color: var(--text-muted);
}

.tag {
  font-size: .78rem;
  font-weight: 600;
  background: var(--accent-soft);
  color: var(--accent);
  padding: var(--space-1) var(--space-3);
  border-radius: var(--radius-full);
}
[data-theme="dark"] .tag { color: var(--indigo-100); }

.tag-outline {
  background: transparent;
  border: 1px solid var(--border);
  color: var(--text-muted);
}

.card-body h3 { font-size: 1.4rem; }
.card-featured .card-body h3 { font-size: 1.8rem; }

.card-body p { color: var(--text-muted); }

.card-cta { color: var(--accent); font-weight: 600; white-space: nowrap; }

/* ---------- 8. SOBRE MÍ ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-12);
}
.about-grid .section-header { margin-bottom: 0; }

.about-lead {
  font-family: var(--font-display);
  font-size: clamp(1.3rem, 2.5vw, 1.7rem);
  line-height: 1.45;
}
.about-lead strong { color: var(--accent); }

.about-text {
  font-family: var(--font-display);
  font-size: 1.2rem;
  line-height: 1.6;
  margin-bottom: var(--space-6);
  color: var(--text);
  font-weight: 500;
}
.about-text strong {
  color: var(--accent);
  font-weight: 600;
}

.about-columns {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  margin-top: var(--space-8);
}

.about-block h3 {
  font-size: 1.05rem;
  margin-bottom: var(--space-4);
}

.check-list li {
  position: relative;
  padding-left: var(--space-6);
  margin-bottom: var(--space-2);
  color: var(--text-muted);
}
.check-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--accent);
  font-weight: 700;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.chip-list li {
  font-family: var(--font-mono);
  font-size: .85rem;
  background: var(--surface);
  border: 1px solid var(--border);
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-full);
}

.stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-6);
  margin: var(--space-12) 0 0;
  padding-top: var(--space-8);
  border-top: 1px solid var(--border);
}

.stat dt {
  font-size: .85rem;
  color: var(--text-muted);
  order: 2;
}
.stat dd {
  margin: 0;
  font-family: var(--font-display);
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 700;
  color: var(--accent);
}
.stat { display: flex; flex-direction: column; gap: var(--space-1); }

/* ---------- 9. CONTACTO ---------- */
.contact { text-align: center; }

.contact-title {
  font-size: clamp(2.4rem, 6vw, 4.5rem);
  letter-spacing: -.02em;
  max-width: 16ch;
  margin-inline: auto;
}
.contact-title em { font-style: normal; color: var(--accent); }

.contact-sub {
  margin-top: var(--space-4);
  font-size: 1.15rem;
  color: var(--text-muted);
}

.contact-rotate {
  font-family: var(--font-display);
  font-size: clamp(2rem, 5vw, 3.6rem);
  font-weight: 700;
  color: var(--accent);
  letter-spacing: -.02em;
  min-height: 1.3em;
  margin-top: var(--space-2);
}

.txt-rotate > .wrap {
  border-right: 0.08em solid var(--accent);
}

.contact-actions {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

/* ---------- 10. FOOTER ---------- */
.site-footer {
  border-top: 1px solid var(--border);
  padding-block: var(--space-8);
}

.footer-inner {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  align-items: center;
  gap: var(--space-4);
  font-size: .9rem;
  color: var(--text-muted);
}

.footer-links { display: flex; gap: var(--space-6); }
.footer-links a {
  text-decoration: none;
  font-weight: 500;
  transition: color .2s;
}
.footer-links a:hover { color: var(--accent); }

/* ---------- 11. ANIMACIONES DE ENTRADA ---------- */

/* Título hero: cada palabra entra con stagger */
.hero-word {
  display: inline-block;
  opacity: 0;
  transform: translateY(18px);
  animation: hero-word-in 0.6s var(--ease-out) forwards;
  animation-delay: var(--d, 0ms);
}

.hero-title em .hero-word,
.hero-word em {
  font-style: normal;
  color: var(--accent);
}

@keyframes hero-word-in {
  to { opacity: 1; transform: none; }
}

/* Reflejo que barre el título al terminar la animación de palabras */
.hero-title {
  position: relative;
}

.hero-title::after {
  content: '';
  position: absolute;
  top: 0;
  bottom: 0;
  left: 0;
  width: 45%;
  background: linear-gradient(
    105deg,
    transparent 25%,
    rgba(255, 255, 255, 0.38) 50%,
    transparent 75%
  );
  transform: translateX(-220%);
  animation: hero-shine 1.8s ease-in-out forwards;
  animation-delay: 1.45s;
  pointer-events: none;
}

[data-theme="dark"] .hero-title::after {
  display: none;
}

@keyframes hero-shine {
  to { transform: translateX(360%); }
}

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity .7s var(--ease-out), transform .7s var(--ease-out);
}
.reveal.visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .reveal { opacity: 1; transform: none; transition: none; }
  .marquee-track { animation: none; }
  .project-card, .btn, .mock-ds, .mock-ui, .mock-tokens { transition: none; }
  .hero-title::after { display: none; }
}

/* ---------- 12. CASO DE ESTUDIO ---------- */
.case-hero {
  padding-block: clamp(3rem, 8vh, 5rem) var(--space-12);
}

.back-link {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .9rem;
  color: var(--text-muted);
  text-decoration: none;
  margin-bottom: var(--space-8);
  transition: color .2s;
}
.back-link:hover { color: var(--accent); }

.case-hero .card-meta { margin-bottom: var(--space-6); }

.case-title {
  font-size: clamp(2.4rem, 6.5vw, 4.8rem);
  font-weight: 700;
  letter-spacing: -.02em;
  max-width: 20ch;
}
.case-title em { font-style: normal; color: var(--accent); }

.case-subtitle {
  margin-top: var(--space-6);
  font-size: clamp(1.1rem, 2vw, 1.3rem);
  color: var(--text-muted);
  max-width: 52ch;
}

.case-meta {
  display: flex;
  flex-wrap: nowrap;
  justify-content: space-between;
  gap: 32px;
  margin: var(--space-12) 0 0;
  padding-top: var(--space-6);
  border-top: 1px solid var(--border);
}
.case-meta > div {
  flex: 1;
  min-width: 0;
}
.case-meta dt {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  margin-bottom: var(--space-1);
}
.case-meta dd {
  margin: 0;
  font-weight: 600;
}

.case-cover {
  width: min(1120px, 100% - 3rem);
  margin-inline: auto;
}
.case-cover-visual {
  min-height: clamp(280px, 45vw, 460px);
  border-radius: var(--radius-lg);
  padding: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.case-stats {
  border-top: 0;
  padding-top: var(--space-12);
  grid-template-columns: repeat(4, 1fr) !important;
}

/* Layout de sección: etiqueta a la izquierda, contenido a la derecha */
.case-section {
  display: grid;
  grid-template-columns: 1fr 2.2fr;
  gap: var(--space-12);
  align-items: start;
}

.case-section-label {
  position: sticky;
  top: 90px;
}
.case-section-label h2 {
  font-size: clamp(1.5rem, 3vw, 2.1rem);
  letter-spacing: -.01em;
}

.case-section-body {
  max-width: 64ch;
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}
.case-section-body h3 {
  font-size: clamp(1.4rem, 2.5vw, 1.8rem);
  margin-bottom: var(--space-2);
}
.case-section-body h4 {
  font-family: var(--font-display);
  font-size: 1.1rem;
  margin: var(--space-4) 0 0;
}
.case-section-body p { color: var(--text-muted); }
.case-section-body p strong { color: var(--text); }
.case-section-body a { color: var(--accent); font-weight: 500; }

.problem-list li::before { content: "✕"; color: var(--coral-400); }

/* Tarjetas de librerías */
.library-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-4);
  margin-block: var(--space-4);
}

.library-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  box-shadow: var(--shadow-card);
}
.library-card .library-num {
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--accent);
}
.library-card h4 {
  margin: var(--space-2) 0;
  font-size: 1.05rem;
}
.library-card p {
  font-size: .9rem;
  color: var(--text-muted);
}

.strategy-item h4 {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-2);
}
.strategy-num {
  display: inline-grid;
  place-items: center;
  width: 28px;
  height: 28px;
  flex-shrink: 0;
  background: var(--accent-soft);
  color: var(--accent);
  border-radius: var(--radius-full);
  font-size: .85rem;
}
[data-theme="dark"] .strategy-num { color: var(--indigo-100); }

/* Figuras del caso de estudio */
.case-figure {
  margin: var(--space-4) 0;
}
.case-figure img {
  display: block;
  width: 100%;
  height: auto;
  background: #fff;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
}
.case-figure figcaption {
  margin-top: var(--space-3);
  font-family: var(--font-mono);
  font-size: .8rem;
  color: var(--text-muted);
  text-align: center;
}

/* Dashboard visual mockup */
.audit-dashboard-visual {
  display: grid;
  place-items: center;
  min-height: 420px;
  padding: var(--space-8);
}

.dashboard-frame {
  width: 100%;
  max-width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.dashboard-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
}
.dashboard-header h3 {
  font-size: 1.1rem;
  margin-bottom: var(--space-1);
}
.dashboard-header p {
  font-size: .9rem;
  color: var(--text-muted);
}

.dashboard-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
  padding: var(--space-4);
  border-bottom: 1px solid var(--border);
}

.stat-card {
  padding: var(--space-3);
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
}
.stat-card.critical { border-left: 3px solid #ef4444; }
.stat-card.high { border-left: 3px solid #f97316; }
.stat-card.medium { border-left: 3px solid #eab308; }

.stat-label {
  display: block;
  font-size: .75rem;
  color: var(--text-muted);
  margin-bottom: var(--space-1);
  text-transform: uppercase;
  letter-spacing: .5px;
}
.stat-number {
  display: block;
  font-family: var(--font-display);
  font-size: 1.8rem;
  font-weight: 700;
  color: var(--text);
}

.dashboard-charts {
  padding: var(--space-4);
}

.chart-tabs {
  display: flex;
  gap: var(--space-2);
  margin-bottom: var(--space-3);
  border-bottom: 1px solid var(--border);
}

.tab {
  font-size: .9rem;
  padding: var(--space-2) var(--space-3);
  border-bottom: 2px solid transparent;
  cursor: pointer;
  color: var(--text-muted);
  transition: all .2s;
}
.tab.active {
  border-bottom-color: var(--accent);
  color: var(--accent);
}

.chart-content {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  height: 120px;
  margin-bottom: var(--space-3);
}

.bar-chart {
  display: flex;
  align-items: flex-end;
  gap: var(--space-2);
  width: 100%;
  height: 100%;
}

.bar {
  flex: 1;
  background: linear-gradient(180deg, var(--accent), var(--indigo-100));
  border-radius: var(--radius-sm) var(--radius-sm) 0 0;
  min-height: 20px;
}
[data-theme="dark"] .bar { background: linear-gradient(180deg, var(--accent), var(--indigo-400)); }

.categories {
  display: flex;
  gap: var(--space-2);
  font-size: .85rem;
  color: var(--text-muted);
}
.cat { flex: 1; text-align: center; }

/* Architecture y features */
.architecture-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.arch-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-6);
  text-align: center;
  box-shadow: var(--shadow-card);
}
.arch-icon {
  font-size: 2rem;
  display: block;
  margin-bottom: var(--space-2);
  color: var(--accent);
}
.arch-card h5 {
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
}
.arch-card p {
  font-size: .9rem;
  color: var(--text-muted);
}

.feature-blocks {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin: var(--space-4) 0;
}

.feature-block h5 {
  font-size: 1.05rem;
  margin-bottom: var(--space-2);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.feature-block h5 .material-symbols-outlined {
  font-size: 1.25rem;
  color: var(--accent);
  flex-shrink: 0;
}
.feature-block p {
  font-size: .95rem;
  color: var(--text-muted);
}
.feature-block ul {
  margin-top: var(--space-2);
  margin-bottom: var(--space-3);
}

.audit-methods li {
  font-size: .9rem;
  margin-bottom: var(--space-2);
}

/* Challenge questions */
.challenge-questions {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-6);
  margin: var(--space-6) 0;
}

.question-block {
  background: var(--surface);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-md);
  padding: var(--space-4) var(--space-6);
  box-shadow: var(--shadow-card);
}

.question-block h5 {
  font-family: var(--font-display);
  font-size: 1.05rem;
  color: var(--accent);
  margin: 0 0 var(--space-2);
  font-weight: 600;
}

.question-block p {
  margin-bottom: var(--space-2);
  color: var(--text-muted);
}

.question-block ul {
  margin-top: var(--space-2);
  margin-bottom: 0;
}

/* TRAMA Dashboard visual */
.trama-dashboard-visual {
  display: grid;
  place-items: center;
  min-height: 420px;
  padding: var(--space-8);
}

.trama-frame {
  width: 100%;
  max-width: 100%;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-card);
  overflow: hidden;
}

.trama-header {
  padding: var(--space-4) var(--space-6);
  border-bottom: 1px solid var(--border);
  background: linear-gradient(135deg, #1e3a8a, #3b82f6);
  color: white;
}

.trama-header h3 {
  font-size: 1.2rem;
  margin-bottom: var(--space-1);
  color: white;
}

.trama-header p {
  font-size: .9rem;
  color: rgba(255, 255, 255, 0.9);
}

.trama-content {
  padding: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.trama-section {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.section-label {
  font-family: var(--font-display);
  font-size: .95rem;
  font-weight: 600;
  color: var(--text);
}

.trama-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-3);
  background: var(--bg-alt);
  border-radius: var(--radius-sm);
  border-left: 4px solid #3b82f6;
}

.item-title {
  font-weight: 500;
  color: var(--text);
}

.item-status {
  font-family: var(--font-mono);
  font-size: .8rem;
  background: #dbeafe;
  color: #1e40af;
  padding: var(--space-1) var(--space-2);
  border-radius: var(--radius-full);
}

.trama-button {
  padding: var(--space-3);
  background: #3b82f6;
  color: white;
  border-radius: var(--radius-sm);
  text-align: center;
  font-weight: 600;
}

/* Timeline */
.timeline {
  display: flex;
  flex-direction: column;
  gap: var(--space-8);
  margin: var(--space-6) 0;
  padding-left: var(--space-4);
  border-left: 2px solid var(--border);
}

.timeline-item {
  position: relative;
  padding-left: var(--space-6);
}

.timeline-marker {
  position: absolute;
  left: -1.65rem;
  top: 0;
  width: 2px;
  height: 100%;
  font-family: var(--font-mono);
  font-size: .8rem;
  font-weight: 600;
  color: var(--accent);
  padding-left: var(--space-2);
}

.timeline-item h4 {
  font-size: 1.1rem;
  margin-bottom: var(--space-2);
}
.timeline-item p {
  color: var(--text-muted);
  font-size: .95rem;
}

/* Tech grid */
.tech-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-4);
  margin: var(--space-4) 0;
}

.tech-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: var(--space-4);
  box-shadow: var(--shadow-card);
}
.tech-icon {
  font-size: 1.8rem;
  display: block;
  margin-bottom: var(--space-2);
  color: var(--accent);
}
.tech-card h6 {
  font-family: var(--font-display);
  font-size: .95rem;
  margin: 0 0 var(--space-2);
  font-weight: 600;
}
.tech-card p {
  font-size: .85rem;
  color: var(--text-muted);
  line-height: 1.5;
}

/* Ejemplos de nomenclatura */
.naming-examples {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}
.naming-examples code {
  background: var(--surface);
  border: 1px solid var(--border);
  font-size: .9rem;
  padding: var(--space-2) var(--space-4);
  border-radius: var(--radius-sm);
}

/* Impacto en 3 columnas */
.impact-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-8);
  margin-top: var(--space-4);
}
.impact-grid h4 { margin: 0 0 var(--space-3); }

/* Cita de aprendizajes */
.case-quote {
  margin: 0 auto;
  max-width: 64ch;
  text-align: center;
}
.case-quote p {
  font-family: var(--font-display);
  font-size: clamp(1.2rem, 2.2vw, 1.6rem);
  font-weight: 500;
  line-height: 1.45;
  letter-spacing: -.01em;
  text-wrap: balance;
}
.case-quote em { font-style: normal; color: var(--accent); }
.case-quote footer {
  margin-top: var(--space-6);
  color: var(--text-muted);
  font-size: 1.05rem;
}

/* ---------- 13. RESPONSIVE ---------- */

/* ── Tablet ≤ 860px ── */
@media (max-width: 860px) {
  /* Nav: links pasan a segunda línea */
  .nav {
    flex-wrap: wrap;
    row-gap: 0;
  }
  .nav-links {
    display: flex;
    order: 3;
    flex-basis: 100%;
    gap: var(--space-5);
    padding-block: var(--space-2);
    border-top: 1px solid var(--border);
    overflow-x: auto;
    scrollbar-width: none;
  }
  .nav-links::-webkit-scrollbar { display: none; }
  .nav-links a { font-size: .9rem; white-space: nowrap; }

  /* About: apila */
  .about-grid { grid-template-columns: 1fr; gap: var(--space-8); }

  /* Caso de estudio */
  .case-section { grid-template-columns: 1fr; gap: var(--space-6); }
  .case-section-label { position: static; }
  .architecture-grid { grid-template-columns: 1fr; }
  .feature-blocks { grid-template-columns: 1fr; }
  .dashboard-grid { grid-template-columns: repeat(2, 1fr); }
  .tech-grid { grid-template-columns: 1fr; }
  .question-block { padding: var(--space-3) var(--space-4); }
  .case-stats { grid-template-columns: repeat(2, 1fr) !important; }
}

/* ── Mobile ≤ 720px ── */
@media (max-width: 720px) {
  .project-grid { grid-template-columns: 1fr; }
  .card-featured { grid-column: span 1; }
  .about-columns { grid-template-columns: 1fr; }
  .stats { grid-template-columns: repeat(2, 1fr); gap: var(--space-4); }
  .section { padding-block: var(--space-12); }
  .impact-grid { grid-template-columns: 1fr; gap: var(--space-6); }

  /* Marquee: wraps para evitar scroll horizontal */
  .marquee-track {
    white-space: normal;
    flex-wrap: wrap;
    gap: var(--space-2) var(--space-4);
    justify-content: center;
  }
}

/* ── Móvil pequeño ≤ 540px ── */
@media (max-width: 540px) {
  /* Nav: más compacto */
  .nav-links { gap: var(--space-4); }
  .logo-name { display: none; }

  /* Hero: botones apilados a ancho completo */
  .hero-actions { flex-direction: column; }
  .hero-actions .btn { width: 100%; justify-content: center; text-align: center; }

  /* Tarjetas: visual más baja */
  .card-visual { min-height: 170px; }
  .card-featured .card-visual { min-height: 210px; }

  /* Sección sobre mí */
  .stats { grid-template-columns: 1fr; }

  /* Contacto: botones apilados */
  .contact-actions { flex-direction: column; align-items: stretch; }
  .contact-actions .btn { width: 100%; justify-content: center; text-align: center; }

  /* Footer: centrado */
  .footer-inner { flex-direction: column; align-items: center; text-align: center; }
  .footer-links { gap: var(--space-4); }
}

/* ---------- 14. NEURAL BACKGROUND ---------- */
#neural-bg {
  position: fixed;
  inset: 0;
  z-index: -1;
  pointer-events: none;
  -webkit-mask-image: linear-gradient(to right,
    black 0%, black 16%,
    transparent 36%,
    transparent 64%,
    black 84%, black 100%);
  mask-image: linear-gradient(to right,
    black 0%, black 16%,
    transparent 36%,
    transparent 64%,
    black 84%, black 100%);
}

@media (max-width: 860px) {
  #neural-bg {
    -webkit-mask-image: none;
    mask-image: none;
    opacity: 0.5;
  }
}