/* ===========================================================
   Universidad del Rosario · Extensión y Sociedad
   Estilos globales y variables de color
   =========================================================== */

:root {
  /* Paleta de marca */
  --rosario-red: #E30613;
  --rosario-red-dark: #B4050F;
  --navy-900: #14142E;
  --navy-800: #1C1C42;
  --navy-700: #24244F;
  --purple-900: #2A0E52;
  --purple-700: #4B1F8C;
  --purple-500: #6E32C9;

  --white: #FFFFFF;
  --off-white: #F6F5F9;
  --gray-band: #EFEEF3;
  --text-dark: #1D1B2E;
  --text-muted: #55536B;
  --border-light: #E4E2ED;

  /* Placeholders de piezas gráficas (colores sólidos temporales) */
  --ph-1: #2c5f8a6e;
  --ph-2: #1e6b727d;
  --ph-3: #37447e5e;
  --ph-4: #1f6f5c5c;
  --ph-5: #6b521940;
  --ph-6: #235c3b42;
  --ph-7: #7a4a1473;
  --ph-8: #4b53205c;
  --ph-9: #1f4e796e;
  --ph-hero: linear-gradient(120deg, #2A0E52 0%, #4B1F8C 55%, #6E32C9 100%);

  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --shadow-md: 0 8px 24px rgba(20, 20, 46, 0.15);
  --transition: 0.2s ease;

  --font-base: "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-base);
  color: var(--text-dark);
  background: var(--white);
  line-height: 1.5;
}

ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

a {
  color: inherit;
  text-decoration: none;
}

button {
  font: inherit;
  cursor: pointer;
}

img {
  max-width: 100%;
  display: block;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--rosario-red);
  color: var(--white);
  padding: 0.75rem 1.25rem;
  z-index: 999;
}

.skip-link:focus {
  left: 0;
}

.icon {
  width: 1.1em;
  height: 1.1em;
  fill: none;
  stroke: rgb(255 255 255);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.icon--chevron {
  width: 0.9em;
  height: 0.9em;
}

.text-accent {
  color: var(--rosario-red);
  font-weight: 800;
}


/* ===========================================================
   Cabecera principal
   =========================================================== */
.main-header {
  background: var(--white);
  border-bottom: 1px solid var(--border-light);
  position: relative;
}

.main-header__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0.9rem 2rem;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  flex-shrink: 0;
}

.brand__logo {
  width: 2.4rem;
  height: 2.4rem;
  fill: var(--rosario-red);
}

.brand__text {
  display: flex;
  flex-direction: column;
  line-height: 1.15;
}

.brand__title {
  font-size: 0.85rem;
  color: var(--text-dark);
  font-weight: 400;
}

.brand__subtitle {
  font-size: 1.35rem;
  font-weight: 700;
  color: var(--rosario-red);
}

.main-nav {
  flex: 1;
}

.main-nav ul {
  display: flex;
  align-items: center;
  gap: 1.75rem;
  flex-wrap: wrap;
}

.main-nav a,
.main-nav__btn {
  background: none;
  border: none;
  color: var(--text-dark);
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.4rem 0;
}

.main-nav a:hover,
.main-nav__btn:hover {
  color: var(--rosario-red);
}

.main-header__actions {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  flex-shrink: 0;
}

.pill-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.5rem 1.2rem;
  border-radius: 999px;
  font-size: 0.9rem;
  font-weight: 600;
  border: 1.5px solid var(--rosario-red);
  transition: background var(--transition), color var(--transition);
  white-space: nowrap;
}

.pill-btn--outline {
  color: var(--rosario-red);
  background: var(--white);
}

.pill-btn--outline:hover {
  background: var(--rosario-red);
  color: var(--white);
}

.pill-btn--filled {
  color: var(--white);
  background: var(--rosario-red);
}

.pill-btn--filled:hover {
  background: var(--rosario-red-dark);
}

.hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 2.2rem;
  height: 2.2rem;
  background: none;
  border: none;
  padding: 0;
}

.hamburger span {
  display: block;
  height: 2px;
  background: var(--text-dark);
  border-radius: 2px;
}

.search-panel {
  border-top: 1px solid var(--border-light);
  background: var(--off-white);
}

.search-panel__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 1rem 2rem;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.search-panel__inner input {
  flex: 1;
  padding: 0.7rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border-light);
  font-size: 1rem;
}

.search-panel__inner .icon-btn {
  background: var(--rosario-red);
  color: var(--white);
}

/* ===========================================================
   Hero
   =========================================================== */
.hero {
  position: relative;
  min-height: 368px;
  display: flex;
  align-items: center;
  overflow: hidden;
  color: var(--white);
}

.hero__media {
  position: absolute;
  inset: 0;
  background: var(--ph-hero);
}

.hero__overlay {
  position: absolute;
  inset: 0;
  background-image: url('../images/Banner_extension.webp');
}

.hero__content {
  position: relative;
  z-index: 2;
  max-width: 1400px;
  width: 100%;
  margin: 0 auto;
  padding: 3rem 2rem;
}

.hero__marker {
  display: block;
  width: 1.5rem;
  height: 1.5rem;
  background: var(--rosario-red);
  margin-bottom: 1.5rem;
}

.hero__title {
  font-size: 2.75rem;
  font-weight: 800;
  line-height: 1.2;
  margin: 0 0 1.25rem;
  max-width: 700px;
  color: white;
}

.hero__subtitle {
  font-size: 1.05rem;
  font-weight: 400;
  line-height: 1.6;
  max-width: 520px;
  margin: 0;
  color: rgba(255, 255, 255, 0.92);
}

/* ===========================================================
   Secciones genéricas
   =========================================================== */
.section {
  padding: 4rem 0;
}

.section__inner {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0 2rem;
}

.section__heading {
  display: flex;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
  margin: 0 auto 1.5rem;
}

.section__icon {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  object-fit: contain;
}

.section__icon-svg {
  width: 3rem;
  height: 3rem;
  flex-shrink: 0;
  fill: none;
  stroke: var(--rosario-red);
  stroke-width: 2;
  stroke-linecap: round;
  stroke-linejoin: round;
}

.section__title {
  font-size: 2rem;
  font-weight: 800;
  color: var(--navy-800);
  margin: 0;
}

.section__subtitle {
  text-align: center;
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--navy-800);
  margin: 0 0 1.25rem;
}

.section__text {
  text-align: justify;
  color: var(--text-muted);
  max-width: 1300px;
  font-size: 1.05rem;
  margin: 0 auto;
}

/* ===========================================================
   Prueba social: cifras + aliados
   =========================================================== */
.stats {
  padding: 3rem 0 3.5rem;
}

.stats__grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
  margin: 0 0 2.5rem;
}

.stat {
  border-radius: var(--radius-md);
  overflow: hidden;
  box-shadow: var(--shadow-md);
  text-align: center;
}

.stat__value {
  background: var(--white);
  color: var(--navy-800);
  font-size: 1.9rem;
  font-weight: 800;
  padding: 1.2rem 1rem 0.7rem;
  border: 3px solid var(--navy-800);
  border-bottom: none;
}

.stat__label {
  background: var(--rosario-red);
  color: var(--white);
  font-size: 0.95rem;
  font-weight: 600;
  padding: 0.65rem 1rem 0.95rem;
}

.logos {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-evenly;
  gap: 2.5rem;
  margin: 0 0 1.5rem;
}

.logos__item img {
  height: 4rem;
  width: auto;
  max-width: 160px;
  object-fit: contain;
}

.growth-note {
  text-align: center;
  color: var(--text-muted);
  font-size: 0.95rem;
  font-style: italic;
  margin: 0;
}

/* ===========================================================
   Consultoría especializada
   =========================================================== */
.consultoria {
  background: var(--gray-band);
}

/* ===========================================================
   Portafolio
   =========================================================== */
.portfolio__filters {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: 0.75rem;
  margin: 0 auto 2.5rem;
}

.filter-btn {
  padding: 0.6rem 1.4rem;
  border-radius: 8px;
  border: 1px solid var(--rosario-red);
  background: var(--white);
  color: var(--navy-800);
  font-size: 0.9rem;
  font-weight: 600;
  white-space: nowrap;
  transition: background var(--transition), color var(--transition);
}

.filter-btn:hover {
  background: var(--off-white);
}

.filter-btn.is-active {
  background: var(--rosario-red);
  color: var(--white);
}

.card-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.topic-card.is-hidden {
  display: none;
}

.topic-card a {
  position: relative;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  min-height: 190px;
  border-radius: var(--radius-md);
  overflow: hidden;
  padding: 1.5rem;
  color: var(--white);
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-blend-mode: multiply;
  transition: transform var(--transition), box-shadow var(--transition);
}

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

.topic-card--1 a {
  background-color: var(--ph-1);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/IA_transformacion_digital.webp');
}

.topic-card--2 a {
  background-color: var(--ph-2);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Salud_politicas_sanitarias.webp');
}

.topic-card--3 a {
  background-color: var(--ph-3);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Salud_ocupacional_ergonomia.webp');
}

.topic-card--4 a {
  background-color: var(--ph-4);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Cambio_climatico_energia.webp');
}

.topic-card--5 a {
  background-color: var(--ph-5);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Innovacion_empresarial.webp');
}

.topic-card--6 a {
  background-color: var(--ph-6);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Democracia_Estado_paz.webp');
}

.topic-card--7 a {
  background-color: var(--ph-7);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Demografia_desigualdades.webp');
}

.topic-card--8 a {
  background-color: var(--ph-8);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Educacion_talento.webp');
}

.topic-card--9 a {
  background-color: var(--ph-9);
  background-image: linear-gradient(0deg, rgba(10, 10, 30, 0.8) 0%, rgba(10, 10, 30, 0.15) 65%), url('../images/images_extension/Ciudad_desarrollo_regional.webp');
}

.topic-card__ods {
  position: absolute;
  bottom: 1rem;
  right: 1rem;
  background: rgba(255, 255, 255, 0.92);
  color: var(--navy-800);
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  padding: 0.25rem 0.65rem;
  border-radius: 999px;
}

.topic-card__title {
  font-size: 1.15rem;
  font-weight: 700;
  color: white;
  margin: 0;
}

.topic-card__hook {
  font-size: 0.9rem;
  font-weight: 400;
  color: rgba(255, 255, 255, 0.85);
  margin-top: 0.4rem;
}

/* ===========================================================
   Botón flotante de WhatsApp
   =========================================================== */
.whatsapp-float {
  position: fixed;
  right: 1.5rem;
  bottom: 1.5rem;
  z-index: 100;
}

.whatsapp-float__toggle {
  display: block;
  background: none;
  border: none;
  padding: 0;
  transition: transform var(--transition);
}

.whatsapp-float__toggle:hover {
  transform: translateY(-2px);
}

.whatsapp-float__img {
  height: 3.5rem;
  width: auto;
}

.whatsapp-float__menu {
  position: absolute;
  right: 0;
  bottom: calc(100% + 0.75rem);
  min-width: 200px;
  background: var(--white);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-md);
  padding: 0.5rem;
  opacity: 0;
  visibility: hidden;
  transform: translateY(6px);
  transition: opacity var(--transition), transform var(--transition), visibility var(--transition);
}

.whatsapp-float__menu:not([hidden]) {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.whatsapp-float__option {
  display: flex;
  align-items: center;
  gap: 0.65rem;
  padding: 0.7rem 0.75rem;
  border-radius: var(--radius-sm);
  color: var(--text-dark);
  font-size: 0.95rem;
  font-weight: 600;
}

.whatsapp-float__option .icon {
  stroke: var(--rosario-red);
  flex-shrink: 0;
}

.whatsapp-float__option:hover {
  background: var(--off-white);
  color: var(--rosario-red);
}

.aliados-section {
    display: block;
    background: #ffffff;
    overflow: hidden;
}

.aliados-titulo {
    text-align: center;
    font-size: 1.5rem;
    font-weight: 600;
    color: #1a1a1a;
    margin: 0 0 32px;
}

.marquee {
    position: relative;
    width: 100%;
    overflow: hidden;
    -webkit-mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
    mask-image: linear-gradient(to right, transparent, black 8%, black 92%, transparent);
}

.marquee__track {
    display: flex;
    align-items: center;
    width: max-content;
    animation: marquee-scroll 35s linear infinite;
}

.marquee:hover .marquee__track {
    animation-play-state: paused;
}

.marquee__item {
    flex: 0 0 auto;
    display: flex;
    align-items: center;
    justify-content: center;
    width: 160px;
    height: 90px;
    margin: 0 28px;
}

.aliados-section .marquee__item img {
    max-width: 100%;
    max-height: 100%;
    object-fit: contain;
    filter: grayscale(0%);
    opacity: 1;
    transition: filter 0.25s ease, opacity 0.25s ease;
}

.aliados-section .marquee__item img:hover {
    filter: grayscale(100%);
    opacity: 0.7;
}

@keyframes marquee-scroll {
    from {
        transform: translateX(0);
    }

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

@media (prefers-reduced-motion: reduce) {
    .marquee__track {
        animation: none;
    }

    .marquee {
        overflow-x: auto;
    }
}