/* ===========================
   SITE — shared design system for every page
   Tokens are locked here; page files only read var(--*).
   Replaces the old reset / layout / header / lang-toggle / components /
   page-heading / contact-form stylesheets.
=========================== */

:root {
  /* Palette — taken from the live think4change.tech CSS */
  --ink: #060e1c;
  --navy: #0b1a30;
  --navy-2: #142b4d;
  --navy-3: #1e3f6e;
  /* Accent kept muted (steel blue) for a sober, corporate tone */
  --blue: #8aa9cf;
  --blue-deep: #24508a;
  --mist: #c3d0e4;
  --muted: #8fa2bd;
  --paper: #f3f6fb;
  --slate: #45597a;
  --white: #ffffff;
  --line-dark: rgba(195, 208, 228, 0.16);
  --line-light: rgba(11, 26, 48, 0.12);

  /* Type */
  --font-sans: 'Inter', system-ui, sans-serif;
  /* Labels/eyebrows: small uppercase sans (formerly Roboto Mono) */
  --font-mono: 'Inter', system-ui, sans-serif;
  --fs-display: clamp(2.4rem, 4.4vw, 4.5rem);
  --fs-h2: clamp(1.9rem, 3.4vw, 3.1rem);
  --fs-h3: clamp(1.35rem, 2vw, 1.85rem);
  --fs-body: clamp(1.0625rem, 1.1vw, 1.125rem);
  --fs-lede: clamp(1.1rem, 1.4vw, 1.3rem);
  --fs-mono: 0.75rem;
  --track-display: -0.025em;
  --track-h2: -0.02em;
  --track-mono: 0.14em;

  /* Space (8pt) + shape */
  --gutter: clamp(1.25rem, 5.5vw, 5.5rem);
  --section: clamp(5rem, 11vw, 10rem);
  --radius: 2px;
  --radius-lg: 4px;
  --max: 1180px;

  /* Motion */
  --ease: cubic-bezier(0.16, 1, 0.3, 1);
}

/* ---------- Reset + base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html, body, h1, h2, h3, h4, h5, h6, p, ul, ol, li, figure, blockquote, dl, dd, fieldset { margin: 0; padding: 0; }
ul, ol { list-style: none; }
fieldset { border: 0; min-width: 0; }
[hidden] { display: none !important; }
img { display: block; max-width: 100%; }
a { color: inherit; text-decoration: none !important; }
button { font: inherit; color: inherit; cursor: pointer; }
:focus-visible { outline: 2px solid var(--blue); outline-offset: 3px; }
::selection { background: var(--blue-deep); color: var(--white); }

html, body { background: var(--ink); }
body {
  color: var(--mist);
  font-family: var(--font-sans);
  font-size: var(--fs-body);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: clip;
}
h1, h2, h3, h4, h5, h6 { color: var(--white); font-family: var(--font-sans); font-weight: 600; letter-spacing: -0.015em; line-height: 1.15; }
p { color: var(--mist); }

.skip-link {
  position: fixed; left: 1rem; top: -4rem; z-index: 200;
  padding: .75rem 1rem; background: var(--blue-deep); color: var(--white);
  border-radius: var(--radius); transition: top .3s var(--ease);
}
.skip-link:focus { top: 1rem; }

/* ---------- Utilities ---------- */
.t-wrap { width: min(var(--max), 100% - 2 * var(--gutter)); margin-inline: auto; }
.t-mono {
  font-family: var(--font-mono); font-size: var(--fs-mono); font-weight: 600;
  letter-spacing: var(--track-mono); text-transform: uppercase; line-height: 1.4;
  font-variant-numeric: tabular-nums;
}
.t-index { color: var(--blue); display: inline-block; margin-bottom: 1.75rem; }
.t-h2 {
  font-size: var(--fs-h2); font-weight: 600; letter-spacing: var(--track-h2);
  line-height: 1.12; color: var(--white); text-wrap: balance;
}

/* ---------- Buttons ---------- */
.t-btn, .cta-elegant, .main-button a {
  display: inline-flex; align-items: center; gap: .6rem;
  padding: .95rem 1.5rem; border-radius: var(--radius); border: 1px solid transparent;
  font-size: .92rem; font-weight: 600; letter-spacing: .01em; line-height: 1;
  transition: background .3s var(--ease), color .3s var(--ease), border-color .3s var(--ease);
}
.t-btn-solid, .main-button a { background: var(--blue-deep); color: var(--white); }
.t-btn-solid:hover, .main-button a:hover { background: var(--navy-3); color: var(--white); }
.t-btn-ghost, .cta-elegant { border-color: rgba(255,255,255,.45); color: var(--white); background: transparent; }
.t-btn-ghost:hover, .cta-elegant:hover { border-color: var(--white); color: var(--white); }
.t-btn-light { background: var(--white); color: var(--navy); }

/* ---------- Nav (floating pills) ---------- */
.t-nav {
  position: fixed; inset: 1.25rem var(--gutter) auto; z-index: 100;
  display: flex; align-items: center; justify-content: space-between; gap: 1rem;
  pointer-events: none;
}
.t-nav > * { pointer-events: auto; }
.t-pill {
  display: flex; align-items: center; height: 3.25rem;
  background: rgba(11, 26, 48, 0.55); backdrop-filter: blur(14px) saturate(140%);
  -webkit-backdrop-filter: blur(14px) saturate(140%);
  border: 1px solid var(--line-dark); border-radius: 999px;
}
.t-nav-logo { gap: .6rem; padding: 0 1.25rem 0 .4rem; color: var(--white); font-weight: 600; letter-spacing: -0.02em; }
.t-nav-mark {
  display: grid; place-items: center; width: 2.45rem; height: 2.45rem; border-radius: 50%;
  background: var(--blue-deep); color: var(--white); font-size: .72rem; font-weight: 700; letter-spacing: 0;
}
/* Logo image variant: white circle with the logo fitted inside */
.t-nav-mark-logo { overflow: hidden; background: var(--white); padding: .3rem; }
.t-nav-mark-logo img { width: 100%; height: 100%; object-fit: contain; }
.t-nav-links { padding: 0 .4rem; gap: .1rem; }
.t-nav-links > a, .t-nav-drop > button {
  display: inline-flex; align-items: center; gap: .35rem;
  padding: .55rem 1rem; border: 0; border-radius: 999px; background: none;
  font-size: .9rem; line-height: 1.4; color: var(--mist);
}
.t-nav-links > a:hover, .t-nav-links > a[aria-current="page"], .t-nav-drop > button:hover, .t-nav-drop.is-open > button, .t-nav-drop.is-current > button {
  color: var(--white); background: rgba(79,154,255,.14);
}
.t-nav-drop { position: relative; }
.t-nav-drop > button i { font-size: .7rem; transition: transform .4s var(--ease); }
.t-nav-drop.is-open > button i { transform: rotate(180deg); }
.t-nav-menu {
  position: absolute; top: calc(100% + .75rem); left: 0; min-width: 14rem; padding: .4rem;
  background: rgba(11, 26, 48, 0.92); backdrop-filter: blur(14px); border: 1px solid var(--line-dark); border-radius: var(--radius-lg);
}
.t-nav-menu a { display: block; padding: .7rem .9rem; border-radius: var(--radius); font-size: .9rem; color: var(--mist); }
.t-nav-menu a:hover, .t-nav-menu a[aria-current="page"] { background: rgba(79,154,255,.14); color: var(--white); }
.t-nav-actions { gap: .25rem; padding: 0 .4rem; }
.t-lang { display: flex; }
.t-lang a {
  font-family: var(--font-mono); font-size: .72rem; letter-spacing: .08em;
  padding: .5rem .6rem; border-radius: 999px; color: var(--muted);
}
.t-lang a.is-active { color: var(--white); }
.t-nav-cta {
  display: inline-flex; align-items: center; height: 2.45rem; padding: 0 1.1rem;
  border-radius: 999px; background: var(--white); color: var(--navy); font-size: .88rem; font-weight: 600;
}
.t-menu-btn { display: none; height: 2.45rem; padding: 0 1rem; border: 0; border-radius: 999px; background: var(--white); color: var(--navy); font-size: .88rem; font-weight: 600; }

/* Light variant while the nav sits over paper-coloured sections */
.t-pill, .t-nav-links > a, .t-nav-drop > button, .t-lang a, .t-nav-logo { transition: background .4s var(--ease), color .4s var(--ease), border-color .4s var(--ease); }
.t-nav.is-light .t-pill { background: rgba(255,255,255,.72); border-color: var(--line-light); }
.t-nav.is-light .t-nav-logo, .t-nav.is-light .t-nav-links > a, .t-nav.is-light .t-nav-drop > button, .t-nav.is-light .t-lang a.is-active { color: var(--navy); }
.t-nav.is-light .t-lang a { color: #6b7d99; }
.t-nav.is-light .t-nav-links > a:hover, .t-nav.is-light .t-nav-links > a[aria-current="page"], .t-nav.is-light .t-nav-drop > button:hover, .t-nav.is-light .t-nav-drop.is-current > button { background: rgba(0,113,248,.1); }
.t-nav.is-light .t-nav-cta, .t-nav.is-light .t-menu-btn { background: var(--navy); color: var(--white); }

/* ---------- Inner-page hero (.page-heading) ----------
   Full-bleed photo band; each page file sets only its background image
   and focal point. A title inside it sits bottom-left in display type. */
.page-heading {
  position: relative; isolation: isolate;
  display: flex; align-items: flex-end;
  min-height: clamp(340px, 52vh, 540px); margin: 0; padding: 8rem var(--gutter) clamp(2.5rem, 5vw, 4.5rem);
  background-color: var(--navy); background-repeat: no-repeat; background-size: cover; background-position: center;
  text-align: left;
}
.page-heading::before {
  content: ""; position: absolute; inset: 0; z-index: -1;
  background:
    linear-gradient(90deg, rgba(6,14,28,.6) 0%, rgba(6,14,28,0) 65%),
    linear-gradient(180deg, rgba(6,14,28,.6) 0%, rgba(6,14,28,0) 30%, rgba(6,14,28,.2) 60%, var(--ink) 100%);
}
.page-heading > .container { width: min(var(--max), 100%); max-width: none; margin: 0 auto; padding: 0; }
.page-heading > .container > .row { margin: 0; }
.page-heading > .container > .row > [class*="col"] { padding: 0; }
.page-heading h2, .page-heading h3, .page-heading .page-heading-hero-text {
  width: min(var(--max), 100%); margin: 0 auto; max-width: none;
  font-size: var(--fs-display); font-weight: 600; letter-spacing: var(--track-display); line-height: 1.05;
  color: var(--white); text-align: left; text-wrap: balance; text-shadow: none;
}
.page-heading h2 > *, .page-heading h3 > * { max-width: 22ch; }

/* ---------- Section headings ---------- */
.section { margin-top: 0; }
.section-heading { margin-bottom: clamp(2.5rem, 5vw, 4.5rem); }
.section-heading h6 {
  font-family: var(--font-mono); font-size: var(--fs-mono); font-weight: 500;
  letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--blue);
  margin: 0 0 1.25rem; text-shadow: none;
}
.section-heading h2 {
  font-size: var(--fs-h2); font-weight: 600; letter-spacing: var(--track-h2); line-height: 1.12;
  margin: 0; text-shadow: none; text-wrap: balance;
}
.section-heading h2 em { font-style: normal; color: var(--blue); }

/* ---------- Quote ---------- */
.cite-block { max-width: 60rem; margin: 0 auto; padding: 0 0 0 clamp(1.25rem, 3vw, 2.5rem); border-left: 2px solid var(--blue); background: none; box-shadow: none; border-radius: 0; }
.cite {
  display: block; max-width: 60rem; margin: 0 auto;
  font-family: var(--font-sans); font-style: normal; font-weight: 500;
  font-size: clamp(1.35rem, 2.3vw, 2rem); line-height: 1.35; letter-spacing: -0.01em;
  color: var(--white); text-align: left;
}
.cite::before { content: '\201C'; }
.cite::after { content: '\201D'; }
.cite-author { display: block; margin-top: 1.5rem; font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--blue); text-align: left; }
.cite-author::before { content: '\2014\00A0'; }

/* ---------- Pillar cross-links (paper section, 4 tall cards) ---------- */
.pillar-links { padding: var(--section) var(--gutter); background: var(--paper); text-align: left; }
.pillar-links > * { width: min(var(--max), 100%); margin-inline: auto; }
.pillar-links h3 {
  margin-bottom: clamp(2rem, 4vw, 3rem);
  font-family: var(--font-mono); font-size: 18px; font-weight: 500;
  letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--blue-deep);
}
.pillar-links-grid { display: grid; grid-template-columns: repeat(4, minmax(0, 1fr)); gap: 1.25rem; max-width: var(--max); }
.pillar-link-card {
  display: flex; flex-direction: column; justify-content: flex-end; min-height: 200px; padding: 1.75rem;
  border-radius: var(--radius-lg); background: var(--white); border: 1px solid var(--line-light);
  transition: border-color .3s var(--ease);
}
.pillar-link-card:hover { border-color: var(--blue-deep); background: var(--white); }
.pillar-link-title { display: block; font-size: clamp(1.35rem, 2vw, 1.85rem); font-weight: 600; letter-spacing: var(--track-h2); line-height: 1.1; color: var(--navy); }
.pillar-link-title::after { content: " →"; font-size: .7em; color: var(--blue-deep); }
.pillar-link-card.is-current { background: var(--navy); border-color: transparent; pointer-events: none; }
.pillar-link-card.is-current .pillar-link-title { color: var(--white); }
.pillar-link-card.is-current .pillar-link-title::after { content: ""; }

/* ---------- Forms (contacto, trabaja-con-nosotros, charlas) ---------- */
.contact-page { padding: clamp(3rem, 6vw, 5rem) 0 var(--section); }
/* Page title sits below the hero photo, above the intro and form */
.contact-page .page-heading-hero-text {
  max-width: 28ch; margin: 0 0 clamp(2rem, 4vw, 3rem); padding: 0;
  font-size: clamp(1.75rem, 2.8vw, 2.5rem); font-weight: 600; letter-spacing: var(--track-h2); line-height: 1.2; color: var(--white);
}
.contact-page > .container { width: min(var(--max), 100% - 2 * var(--gutter)); max-width: none; padding-inline: 0; }
.contact-page p { margin-bottom: 1.25rem; font-size: var(--fs-lede); line-height: 1.5; color: var(--mist); }
.contact-page .item {
  display: inline-flex; align-items: center; gap: 1rem; min-width: 0; margin-top: 1rem;
  padding: 1rem 1.5rem 1rem 1rem; border-radius: var(--radius-lg);
  background: var(--navy); border: 1px solid var(--line-dark); box-shadow: none;
}
.contact-page .item h6 { margin: 0; font-size: 1.05rem; font-weight: 600; letter-spacing: -0.01em; color: var(--white); }
.contact-page .item h6 span { font-size: .95rem; font-weight: 400; color: var(--muted); }
.contact-page .item i { display: grid; place-items: center; width: 3rem; height: 3rem; border-radius: var(--radius); background: var(--blue-deep); color: var(--white) !important; font-size: 1.1rem !important; }

#contact-form {
  margin: 0; padding: clamp(1.5rem, 3vw, 2.5rem); border-radius: var(--radius-lg);
  background: var(--navy); border: 1px solid var(--line-dark); box-shadow: none;
}
#contact-form label {
  display: block; margin-bottom: .5rem;
  font-family: var(--font-mono); font-size: .78rem; font-weight: 500 !important; letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--muted);
}
#contact-form input:not([type="file"]):not([type="checkbox"]), #contact-form textarea {
  width: 100%; margin-bottom: 1.75rem; padding: .85rem 0;
  border: 0; border-bottom: 1px solid var(--line-dark); border-radius: 0; background: transparent;
  color: var(--white); font: inherit; font-size: 1.075rem; transition: border-color .3s var(--ease);
}
#contact-form input:not([type="file"]):not([type="checkbox"]) { height: auto; }
#contact-form textarea { min-height: 140px; resize: vertical; }
#contact-form input::placeholder, #contact-form textarea::placeholder { color: rgba(195,208,228,.45); }
#contact-form input:focus, #contact-form textarea:focus { outline: none; border-bottom-color: var(--blue); }
#contact-form button[type="submit"] {
  height: auto; padding: 1rem 1.8rem; border: 0; border-radius: var(--radius);
  background: var(--blue-deep); color: var(--white); font-size: .95rem; font-weight: 600;
  transition: background .3s var(--ease);
}
#contact-form button[type="submit"]:hover { background: var(--navy-3); }
#contact-form button[type="submit"]:disabled { opacity: .6; transform: none; }
.custom-file-upload {
  display: flex !important; align-items: center; gap: .75rem; margin: 0 !important; padding: 1rem 1.1rem;
  border: 1px dashed rgba(138,169,207,.5); border-radius: var(--radius);
  font-family: var(--font-sans) !important; font-size: 1.025rem !important; letter-spacing: 0 !important; text-transform: none !important;
  color: var(--mist) !important; cursor: pointer; transition: border-color .3s var(--ease), background .3s var(--ease);
}
.custom-file-upload:hover { border-color: var(--blue); background: rgba(138,169,207,.08); }
.custom-file-upload i { color: var(--blue); }
.custom-file-upload.file-uploaded-success { border-style: solid; border-color: var(--blue); background: rgba(138,169,207,.12); color: var(--white) !important; }
.form-status { font-size: 1.025rem !important; }

/* ---------- Privacy policy (paper page) ---------- */
.privacy-policy { padding: calc(7rem + var(--section) * .4) 0 var(--section); background: var(--paper); }
.privacy-policy .container { max-width: 52rem; padding-inline: var(--gutter); }
.privacy-policy h1 { margin-bottom: .75rem; font-size: var(--fs-h2); letter-spacing: var(--track-h2); line-height: 1; color: var(--navy); }
.privacy-policy .privacy-updated { margin-bottom: 3rem; font-family: var(--font-mono); font-size: var(--fs-mono); letter-spacing: var(--track-mono); text-transform: uppercase; color: #6b7d99; }
.privacy-policy h2 { margin: 3rem 0 1rem; font-size: var(--fs-h3); letter-spacing: -0.035em; color: var(--navy); }
.privacy-policy p, .privacy-policy li { margin-bottom: 1rem; font-size: 1.1rem; line-height: 1.75; color: var(--slate); }
.privacy-policy ul { margin-bottom: 1rem; padding-left: 1.25rem; list-style: disc; }
.privacy-policy li { list-style: disc; margin-bottom: .4rem; }
.privacy-policy table { width: 100%; margin: 1rem 0 1.5rem; border-collapse: collapse; font-size: 1rem; }
.privacy-policy th, .privacy-policy td { padding: .8rem 1rem; border-bottom: 1px solid var(--line-light); text-align: left; vertical-align: top; color: var(--slate); }
.privacy-policy th { font-family: var(--font-mono); font-size: .78rem; font-weight: 500; letter-spacing: var(--track-mono); text-transform: uppercase; color: var(--navy); background: none; }
.privacy-policy a { color: var(--blue-deep); border-bottom: 1px solid currentColor; }
.privacy-cookie-settings-btn { margin-top: .5rem; padding: .9rem 1.5rem !important; border-radius: var(--radius) !important; }

/* ---------- Scroll reveal (site.js adds .js-motion; elements get .is-in) ---------- */
.js-motion [data-reveal] { opacity: 0; transform: translateY(12px); transition: opacity .7s var(--ease), transform .7s var(--ease); }
.js-motion [data-reveal].is-in { opacity: 1; transform: none; }

/* ---------- Responsive ---------- */
@media (max-width: 1100px) {
  .t-menu-btn { display: inline-flex; align-items: center; }
  .t-nav-cta { display: none; }
  .t-nav-links {
    display: none; position: fixed; top: 5.25rem; left: var(--gutter); right: var(--gutter);
    height: auto; flex-direction: column; align-items: stretch; padding: .5rem; border-radius: var(--radius-lg);
    background: rgba(11, 26, 48, 0.96);
  }
  .t-nav.is-light .t-nav-links { background: rgba(255,255,255,.96); }
  .t-nav.is-open .t-nav-links { display: flex; }
  .t-nav-links > a, .t-nav-drop > button { width: 100%; padding: .9rem 1rem; font-size: 1rem; justify-content: space-between; }
  .t-nav-menu { position: static; min-width: 0; background: none; border: 0; padding: 0 0 0 1rem; backdrop-filter: none; }
  .t-nav.is-light .t-nav-menu a { color: var(--navy); }
}
@media (max-width: 900px) {
  .pillar-links-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .pillar-link-card { min-height: 170px; }
  #contact-form { margin-top: 2.5rem; }
}
@media (max-width: 560px) {
  .t-nav-word { display: none; }
  .t-nav-logo { padding-right: .4rem; }
  .page-heading { min-height: 340px; }
  .contact-page .item { border-radius: var(--radius-lg); }
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after { transition-duration: 0s !important; animation-duration: 0s !important; scroll-behavior: auto !important; }
  .js-motion [data-reveal] { opacity: 1; transform: none; }
}