/* ============================================================
   MASTER.CSS — sistema de diseño del portfolio
   Organizado en capas (mismo criterio que atomic design):
     1. TOKENS      → variables de marca: color, espaciado, tipografía,
                      radios, sombras, motion, z-index
     2. RESET/BASE  → normalización de elementos HTML crudos
     3. ATOMS       → utilidades y primitivas de una sola responsabilidad
     4. MOLECULES   → componentes compuestos reutilizables
     5. ORGANISMS   → secciones completas de página
   No hay bundler ni preprocesador — todo es CSS plano. Los breakpoints
   viven en responsive.css.
   ============================================================ */

/* ============================================================
   1. TOKENS
   ============================================================ */
:root {
  /* --- Color --- */
  --primary-color: #0B354B;
  --primary-bg-color: #FFFFFF;
  --secondary-color: #00CBD9;
  --grey600: #121212;
  --grey500: #666666;
  --grey400: #BDBDBD;
  --grey300: #D3D3D3;
  --grey200: #E9E9E9;
  --grey100: #F4F4F4;

  /* --- Radios --- */
  --radius: 0.5rem;
  --radius-lg: 1.25rem;
  --radius-pill: 100px;

  /* --- Espaciado (escala usada en todo el sitio) --- */
  --space-3xs: 0.25rem;
  --space-2xs: 0.5rem;
  --space-xs: 0.75rem;
  --space-sm: 1rem;
  --space-md: 1.25rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;
  --space-3xl: 4rem;
  --space-4xl: 6rem;
  --space-5xl: 9rem;

  /* --- Gutters de layout --- */
  --gutter-sm: 5%;
  --gutter-lg: 10%;
  --header-height: 96px;
  --header-height-scrolled: 72px;

  /* --- Tipografía --- */
  --fs-2xs: 0.7rem;
  --fs-xs: 0.8rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.1rem;
  --fs-lg: 1.125rem;
  --fs-xl: 1.2rem;
  --fs-2xl: 1.4rem;
  --fs-3xl: 1.5rem;
  --fs-4xl: 2rem;

  --lh-tight: 1.2;
  --lh-base: 1.6;
  --lh-relaxed: 1.7;

  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;

  /* --- Sombras --- */
  --shadow-sm: 0 8px 24px rgba(0, 0, 0, 0.04);
  --shadow-md: 0 2px 12px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 30px rgba(0, 0, 0, 0.08);
  --shadow-elevated: 0 1rem 2rem rgba(0, 0, 0, 0.25), 0 0.75rem 0.75rem rgba(0, 0, 0, 0.22);
  --overlay-hover: rgba(0, 0, 0, 0.025);

  /* --- Motion --- */
  --ease-standard: cubic-bezier(.4, 0, .2, 1);
  --duration-fast: 0.2s;
  --duration-base: 0.3s;
  --duration-slow: 0.35s;
  --duration-slower: 0.4s;

  /* --- Z-index --- */
  --z-header: 1000;
  --z-nav: 1050;
  --z-menu-toggle: 1100;
}

/* ============================================================
   2. RESET / BASE
   ============================================================ */
* {
  box-sizing: border-box;
}
html {
  font-size: 16px;
  scroll-behavior: smooth;
}
body {
  background: var(--primary-bg-color);
  overflow: auto;
  font-family: 'Inter', sans-serif;
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  color: var(--grey600);
  -webkit-font-smoothing: antialiased;
  margin: 0;
}
h1, h1 a {
  font-weight: var(--fw-semibold);
  font-style: normal;
  font-size: var(--fs-4xl);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  margin: 0;
  color: var(--primary-color);
}
h2, h2 a {
  font-weight: var(--fw-semibold);
  font-style: normal;
  font-size: var(--fs-3xl);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-xl) 0;
  padding: var(--space-sm) 0;
  color: var(--primary-color);
}
h3, h3 a {
  font-weight: var(--fw-semibold);
  font-style: normal;
  font-size: var(--fs-md);
  line-height: var(--lh-tight);
  margin: 0 0 var(--space-sm) 0;
  color: var(--primary-color);
}
h4, h4 a {
  font-weight: var(--fw-bold);
  font-style: normal;
  font-size: var(--fs-base);
  line-height: 1;
}
h5, h5 a {
  font-weight: var(--fw-regular);
  font-style: normal;
  font-size: var(--fs-base);
  line-height: 1;
}
p {
  font-weight: var(--fw-regular);
  font-style: normal;
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  margin: 0;
  color: var(--grey600);
}
a, a:visited {
  font-weight: var(--fw-regular);
  font-style: normal;
  font-size: var(--fs-base);
  line-height: var(--lh-relaxed);
  color: var(--primary-color);
  text-decoration: none;
}
a:hover, a:focus, a i:hover, a i:focus {
  color: var(--secondary-color);
  text-decoration: none;
}
a img {
  border: none;
  width: 100%;
  height: auto;
  display: block;
}
b, strong {
  font-weight: bold;
}
blockquote {
  font-weight: bold;
  font-style: italic;
  margin-left: 30px;
}
ul, ol {
  list-style: none;
  margin: 0;
  padding: 0;
}
ul li, ol li {
  margin: 0 0 var(--space-2xs) 0;
  color: var(--grey500);
}
ul li ul {
  padding-bottom: 0;
}
address {
  font-weight: bold;
}
code {
  font-family: Courier, monospace;
}
dt {
  margin-left: 15px;
  font-weight: bold;
}
dd {
  margin: 15px 0 15px 30px;
}
em {
  font-style: italic;
}
section {
  width: 100%;
  padding: var(--space-3xl) var(--gutter-lg);
}
article {
  padding: var(--space-xl) 0;
}

/* ============================================================
   3. ATOMS
   ============================================================ */

/* --- Botones --- */
.btn {
  display: inline-block;
  padding: var(--space-xs) var(--space-lg);
  border-radius: var(--radius);
  font-weight: var(--fw-medium);
  text-align: center;
  text-decoration: none;
  transition: var(--duration-fast) ease;
}
.btn-primary {
  background: var(--primary-color);
  color: var(--primary-bg-color);
  border: 1px solid var(--primary-color);
}
.btn-primary:hover {
  background: var(--secondary-color);
  color: var(--primary-bg-color);
  border-color: var(--secondary-color);
}
.btn-primary:visited {
  color: var(--primary-bg-color);
}
.btn-secondary {
  background: var(--grey200);
  color: var(--primary-color);
  border: 1px solid var(--grey300);
}
.btn-secondary:hover {
  border-color: var(--secondary-color);
  color: var(--secondary-color);
}

/* --- Iconos sociales --- */
.social {
  font-size: var(--fs-3xl);
  margin: 0 var(--space-3xs);
}

/* --- Grid de columnas --- */
.col-1  { width: 8.3333%;  padding-left: calc(5%/12);    padding-right: calc(5%/12); }
.col-2  { width: 16.6667%; padding-left: calc(2.5%/6);   padding-right: calc(2.5%/6); }
.col-3  { width: 25%;      padding-left: calc(1.666%/4); padding-right: calc(1.666%/4); }
.col-4  { width: 33.3333%; padding-left: calc(1.25%/3);  padding-right: calc(1.25%/3); }
.col-5  { width: 41.6667%; padding: 0 1%; }
.col-6  { width: 50%;      padding: 0 0.8333%; }
.col-7  { width: 58.3333%; padding-left: calc(0.7143%*7/12); padding-right: calc(0.7143%*7/12); }
.col-8  { width: 66.6667%; padding-left: calc(0.625%*2/3);   padding-right: calc(0.625%*2/3); }
.col-9  { width: 75%;      padding: 0 0.5556%; float: left; }
.col-10 { width: 83.3333%; padding: 0 0.5;     float: left; }
.col-11 { width: 91.6667%; padding: 0 0.4545%; float: left; }
.col-12 { width: 100%;     padding: 0 0.4167%; float: left; }

/* --- Layout helpers --- */
.container {
  display: flex;
  flex-wrap: wrap;
  width: 100%;
}
.left { float: left; }
.right { float: right; }
.alignright { text-align: right; }
.aligncenter { text-align: center; }
.alignleft { text-align: left; }
.no-margin { margin: 0; }
.no-padding { padding: 0; }
.fullwidth { width: 100%; }
.fullheight { height: 100%; }

.flex-center-row {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: center;
}
.flex-center-center-row {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  align-content: center;
  justify-content: center;
}
.flex-top-row {
  display: flex;
  flex-flow: row wrap;
  align-items: flex-start;
  justify-content: center;
}
.flex-left-row {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: left;
}
.flex-right-row {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: right;
}
.flex-center-column {
  display: flex;
  flex-flow: column wrap;
  justify-content: center;
  align-items: center;
}
.flex-space-between-row {
  display: flex;
  flex-flow: row wrap;
  justify-content: space-between;
  align-items: center;
}
.flex-space-around-row {
  display: flex;
  flex-flow: row wrap;
  align-items: center;
  justify-content: space-around;
}

.underline-shadow {
  box-shadow: var(--shadow-elevated);
}

/* --- Tag de categoría --- */
.category-tag {
  font-size: var(--fs-2xs);
  padding: var(--space-2xs) var(--space-sm);
  border: 1px solid var(--grey400);
  color: var(--grey400);
  margin-right: var(--space-2xs);
  display: inline-block;
  border-radius: var(--radius-pill);
}

/* --- Acento de título de sección --- */
.section-title {
  border-left: 4px solid var(--secondary-color);
  padding-left: var(--space-2xs);
}

/* ============================================================
   4. MOLECULES
   ============================================================ */

/* --- Header --- */
header {
  width: 100%;
  height: var(--header-height);
  text-align: center;
  color: var(--primary-color);
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(10px);
  -webkit-backdrop-filter: blur(10px);
  border-bottom: 1px solid rgba(0, 0, 0, 0.04);
  padding: 0 var(--gutter-sm);
  position: sticky;
  top: 0;
  z-index: var(--z-header);
  transition:
    height var(--duration-slow) var(--ease-standard),
    box-shadow var(--duration-base) ease,
    background-color var(--duration-base) ease;
}
header.scrolled {
  height: var(--header-height-scrolled);
  box-shadow: var(--shadow-sm);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}
header h1 {
  float: left;
  font-size: var(--fs-4xl);
  padding: 0;
  margin: 0;
}
#logo-header {
  height: 40px;
  width: auto;
  display: block;
  transition: height var(--duration-slow) var(--ease-standard);
}
header.scrolled #logo-header {
  height: 32px;
}
header nav a,
header nav p {
  border-left: 2px solid var(--grey400);
  height: 40px;
  padding: 0 var(--space-sm);
}
header nav a:first-child {
  border-left: 0;
}
header nav a:focus,
header nav a:hover {
  color: var(--secondary-color);
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  flex-direction: column;
  gap: 6px;
}
.menu-toggle span {
  width: 24px;
  height: 2px;
  background: var(--primary-color);
  transition:
    transform var(--duration-slow) var(--ease-standard),
    opacity var(--duration-fast) ease;
}
.nav a,
.nav p {
  text-decoration: none;
  padding: var(--space-2xs) var(--space-sm);
}
body.menu-open {
  overflow: hidden;
}
.active-lang {
  pointer-events: none;
  color: oklch(from var(--primary-color) l c h / .8);
}

/* Header sobre hero oscuro (case studies, listado de casos) */
.dark-header header {
  position: absolute;
  width: 100%;
  background: transparent;
  transition: all var(--duration-base) ease;
}
.dark-header .menu-toggle span {
  background: var(--primary-bg-color);
}
.dark-header header a,
.dark-header header nav a,
.dark-header header p,
.dark-header header nav p {
  color: var(--primary-bg-color);
}
.dark-header header nav .active-lang {
  color: oklch(from var(--primary-bg-color) l c h / .8);
}
.dark-header header.scrolled {
  position: fixed;
  background: var(--primary-bg-color);
  box-shadow: var(--shadow-md);
}
.dark-header header.scrolled a,
.dark-header header.scrolled nav a {
  color: var(--primary-color);
}
.dark-header header.scrolled nav .active-lang {
  color: oklch(from var(--primary-color) l c h / .8);
}

/* --- Footer --- */
footer {
  width: 100%;
  height: auto;
  min-height: 60px;
  color: var(--primary-bg-color);
  background-color: var(--primary-color);
  overflow: auto;
  padding: 0 var(--gutter-sm);
  position: relative;
}
footer a, footer a:visited,
footer nav a, footer nav a:visited,
footer a i,
footer p,
footer h1, footer h2, footer h3, footer h4 {
  color: var(--primary-bg-color);
}
footer a:hover, footer a:focus,
footer a i:hover, footer a i:focus,
footer nav a:focus, footer nav a:hover {
  color: var(--secondary-color);
}
footer nav a {
  border-right: 2px solid var(--primary-bg-color);
  height: 40px;
  padding: 0 var(--space-sm);
}
footer nav a:last-child {
  border-right: 0;
}
.copyright {
  text-align: left;
}

/* --- Breadcrumb --- */
#breadcrumb {
  padding: var(--space-sm) var(--gutter-lg);
  opacity: 0.6;
}
.breadcrumb {
  display: flex;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0;
}
.breadcrumb-item {
  display: flex;
  align-items: center;
}
.breadcrumb-item a {
  text-decoration: none;
  transition: opacity var(--duration-fast) ease;
}
.breadcrumb-item a, .breadcrumb-separator, .breadcrumb-current {
  font-size: var(--fs-xs);
}
.breadcrumb-item a:hover {
  opacity: 1;
}
.breadcrumb-separator {
  margin: 0 var(--space-2xs) var(--space-2xs) var(--space-2xs);
  display: flex;
  align-items: center;
}
.breadcrumb-current {
  font-weight: var(--fw-medium);
}

/* --- Filtro de casos --- */
.cases-filter {
  margin: var(--space-sm) 0;
  text-align: center;
}
.cases-filter button {
  background: var(--primary-bg-color);
  color: var(--grey400);
  border: 1px solid var(--grey400);
  border-radius: var(--radius-pill);
  padding: var(--space-2xs) var(--space-sm);
  margin: 0 var(--space-2xs);
  cursor: pointer;
}
.cases-filter button.active {
  background: var(--secondary-color);
  color: var(--primary-bg-color);
  border: 1px solid var(--secondary-color);
}
.cases-filter button:hover {
  color: var(--secondary-color);
  border: 1px solid var(--secondary-color);
}

/* --- Tarjeta de caso (masonry) --- */
.case-card {
  position: absolute;
  will-change: transform;
  width: 32%;
  transition: transform var(--duration-slower) ease, opacity var(--duration-base) ease;
  padding: 0;
  margin-bottom: var(--space-xl);
  background: var(--primary-bg-color);
  opacity: 1;
}
.case-card:hover {
  box-shadow: var(--shadow-hover);
}
.case-card.is-hidden {
  opacity: 0;
  transform: scale(0.95);
  pointer-events: none;
  position: absolute;
}
.case-image img {
  width: 100%;
  height: auto;
  display: block;
}
.case-content {
  padding: 1.2rem;
}
.case-date {
  font-size: var(--fs-xs);
  color: var(--grey400);
  display: block;
  margin-bottom: var(--space-2xs);
}
.case-title {
  margin: 0;
  padding-left: 0;
}
.case-subtitle {
  margin-top: var(--space-2xs);
}
.case-categories {
  margin-top: var(--space-sm);
}

/* --- Tarjeta de caso relacionado --- */
.related-case-card {
  width: 30%;
}
.related-case-card:hover {
  transform: translateY(-6px);
  box-shadow: var(--shadow-hover);
}
.related-case-content {
  padding: var(--space-sm);
}
.related-case-categories {
  margin: var(--space-sm) 0;
}

/* ============================================================
   5. ORGANISMS
   ============================================================ */

/* --- Hero oscuro (cases.html / case.html) --- */
.dark-header .dark-hero-wrapper {
  position: relative;
  height: 50%;
  min-height: 400px;
  display: flex;
  align-items: center;
  background: url('/assets/images/cases-hero-bg.jpg') center center / cover no-repeat;
  color: var(--primary-bg-color);
}
.dark-header .dark-hero-wrapper::before {
  content: "";
  position: absolute;
  inset: 0;
}
.dark-header .dark-hero {
  position: relative;
  z-index: 2;
}
.dark-hero-title {
  color: var(--primary-bg-color);
  text-align: center;
}
.dark-hero-description {
  font-size: var(--fs-xl);
  margin-top: var(--space-sm);
  color: var(--primary-bg-color);
  text-align: center;
}

/* --- Hero de home --- */
#hero {
  background: var(--primary-bg-color);
  padding: var(--space-5xl) var(--gutter-lg) var(--space-4xl) var(--gutter-lg);
  border-radius: var(--radius-lg);
  border-bottom: 1px solid var(--grey200);
}
.hero-eyebrow {
  font-size: var(--fs-sm);
  font-weight: var(--fw-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--secondary-color);
  margin-bottom: var(--space-md);
}
.hero-title {
  position: relative;
  padding-bottom: var(--space-md);
  animation: fadeInUp 0.6s ease forwards;
}
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(var(--space-md)); }
  to { opacity: 1; transform: translateY(0); }
}
.hero-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: 0;
  width: 48px;
  height: 3px;
  background: var(--secondary-color);
  border-radius: 2px;
}
.hero-subtitle {
  margin-top: var(--space-lg);
  font-size: var(--fs-lg);
  color: var(--grey500);
}
.hero-actions {
  margin-top: var(--space-xl);
  display: flex;
  flex-direction: row;
  gap: var(--space-sm);
}

/* --- Franjas de contenido (home) --- */
.leadership {
  background: var(--primary-color);
}
.leadership h2, .leadership p {
  color: var(--primary-bg-color);
}
.credibility {
  background: var(--grey100);
  border-top: 1px solid var(--grey200);
  border-bottom: 1px solid var(--grey200);
}
.credibility-text {
  color: var(--grey500);
  text-align: center;
}
.signature-text {
  font-size: var(--fs-2xl);
  font-style: italic;
  color: var(--primary-color);
  text-align: center;
}

/* --- Grid de capacidades --- */
.capability-grid {
  display: flex;
  gap: var(--space-xl);
  margin-top: var(--space-xl);
}
.card {
  padding: var(--space-lg);
  border: 1px solid var(--grey200);
  border-radius: var(--radius);
  background: var(--primary-bg-color);
  transition: border var(--duration-fast) ease, transform var(--duration-fast) ease;
}
.card:hover {
  border-color: var(--secondary-color);
  transform: translateY(-2px);
}

/* --- Grid masonry de casos --- */
.masonry-grid {
  position: relative;
  min-height: 100px;
  opacity: 0;
  transition: opacity var(--duration-base) ease;
}
.masonry-grid.is-ready {
  opacity: 1;
}

/* --- Casos relacionados --- */
.related-cases {
  border-top: var(--space-3xs) solid var(--primary-color);
}
.related-cases-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gutter-sm);
  align-items: start;
  justify-content: center;
}
#back {
  padding-top: var(--space-xl);
}

/* --- Detalle de caso --- */
#case-study {
  padding: 0;
}
#case-meta {
  padding-top: var(--space-sm);
  padding-bottom: var(--space-sm);
  display: flex;
  gap: var(--space-lg);
}
#case-meta p {
  background: var(--grey200);
  padding: var(--space-2xs) var(--space-sm);
  border-radius: var(--radius);
}
.case-study {
  padding-top: var(--space-xl);
  padding-bottom: var(--space-sm);
}
.case-study h2 {
  margin: 0;
}
.case-study ul {
  list-style: disc;
  padding-left: var(--space-md);
}
.case-study li::marker {
  color: var(--grey600);
}