/* ==========================================================================
   VARIABLES Y CONFIGURACIÓN GENERAL SINUT UNP
   ========================================================================== */
:root {
  --sinut-yellow: #ffcb00; /* Amarillo Amarillo Oficial SINUT UNP */
  --sinut-yellow-hover: #e0b200;
  --sinut-brown: #4a2511; /* Café Institucional Medio */
  --sinut-dark-brown: #2c1408; /* Café Oscuro Profundo */
  --accent-gold: #d4af37; /* Dorado sutil para detalles */
  --bright-red: #c0392b;
  --light-neutral: #f8f9fa;
  --card-bg: #ffffff;
  --text-dark: #1e293b;
  --text-light: #f8fafc;
  --shadow-premium: 0 15px 35px rgba(0, 0, 0, 0.12);
  --transition-smooth: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
}

* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
  scroll-behavior: smooth;
}

body {
  font-family: "Roboto", sans-serif;
  color: var(--text-dark);
  background-color: var(--light-neutral);
  overflow-x: hidden;
  line-height: 1.6;
}

h1,
h2,
h3,
h4,
h5,
h6 {
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

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

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

/* AMPLIACIÓN DE CONTENEDOR GENERAL */
.container {
  max-width: 1350px;
  margin: 0 auto;
  padding: 0 25px;
}

/* ==========================================================================
   BOTONES
   ========================================================================== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 14px 28px;
  font-family: "Montserrat", sans-serif;
  font-weight: 800;
  font-size: 0.95rem;
  text-transform: uppercase;
  border-radius: 6px;
  transition: var(--transition-smooth);
  cursor: pointer;
  border: none;
  gap: 10px;
  box-shadow: 0 4px 15px rgba(0, 0, 0, 0.2);
}

.btn-yellow {
  background-color: var(--sinut-yellow);
  color: var(--sinut-dark-brown);
}

.btn-yellow:hover {
  background-color: var(--sinut-yellow-hover);
  transform: translateY(-3px);
  box-shadow: 0 8px 25px rgba(255, 203, 0, 0.4);
}

.btn-brown {
  background-color: var(--sinut-brown);
  color: #ffffff;
  border: 1px solid var(--sinut-yellow);
}

.btn-brown:hover {
  background-color: var(--sinut-dark-brown);
  color: var(--sinut-yellow);
  transform: translateY(-3px);
}

.btn-outline-brown {
  background: transparent;
  color: var(--sinut-brown);
  border: 2px solid var(--sinut-brown);
}

.btn-outline-brown:hover {
  background: var(--sinut-brown);
  color: #ffffff;
}

.btn-outline-white {
  background: transparent;
  color: #ffffff;
  border: 2px solid #ffffff;
}

.btn-outline-white:hover {
  background: #ffffff;
  color: var(--sinut-dark-brown);
}

/* Botón Flotante Persistente */
.sticky-affiliate-btn {
  position: fixed;
  bottom: 25px;
  right: 25px;
  z-index: 999;
  border: 2px solid var(--sinut-dark-brown);
  animation: pulse-yellow 2s infinite;
}

@keyframes pulse-yellow {
  0% {
    box-shadow: 0 0 0 0 rgba(255, 203, 0, 0.8);
  }
  70% {
    box-shadow: 0 0 0 15px rgba(255, 203, 0, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(255, 203, 0, 0);
  }
}

/* ==========================================================================
   ENCABEZADO / NAVBAR (FONDO CAFÉ CON BANDERA ONDEANDO)
   ========================================================================== */
header.header-with-flag {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: linear-gradient(
    135deg,
    rgba(44, 20, 8, 0.96) 0%,
    rgba(74, 37, 17, 0.96) 100%
  );
  backdrop-filter: blur(10px);
  border-bottom: 3px solid var(--sinut-yellow);
}

.header-flag-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  background-image: url("https://images.unsplash.com/photo-1579389083078-4e7018379f7e?auto=format&fit=crop&w=1920&q=80");
  background-size: cover;
  background-position: center;
  pointer-events: none;
}

.header-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 25px;
  position: relative;
  z-index: 2;
}

.official-logo-box {
  background-color: var(--sinut-dark-brown);
  padding: 6px 14px;
  border-radius: 6px;
  border: 1.5px solid var(--sinut-yellow);
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: 22px;
  align-items: center;
}

.nav-link {
  color: var(--text-light);
  font-family: "Montserrat", sans-serif;
  font-size: 0.82rem;
  font-weight: 700;
  text-transform: uppercase;
  transition: var(--transition-smooth);
  position: relative;
  padding: 5px 0;
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 3px;
  background-color: var(--sinut-yellow);
  transition: var(--transition-smooth);
}

.nav-link:hover::after {
  width: 100%;
}

.nav-link:hover {
  color: var(--sinut-yellow);
}

.menu-toggle {
  display: none;
  color: #ffffff;
  font-size: 1.8rem;
  cursor: pointer;
}

/* ==========================================================================
   HERO PRINCIPAL
   ========================================================================== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  background:
    linear-gradient(rgba(11, 37, 69, 0.3), rgba(13, 27, 42, 0.4)),
    url("../assets/img/fondo.png") center/cover no-repeat; /* <-- Ruta relativa desde css/ */
  padding-top: 90px;
  text-align: center;
  color: #ffffff;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: radial-gradient(
    circle at center,
    transparent 0%,
    rgba(0, 0, 0, 0.3) 100%
  );
}

.hero-content {
  position: relative;
  z-index: 2;
  max-width: 950px;
  padding: 40px 20px;
}

.hero-title {
  font-size: 2.8rem;
  line-height: 1.2;
  margin-bottom: 20px;
  text-shadow: 0 4px 10px rgba(0, 0, 0, 0.8);
}

.hero-title span {
  color: var(--sinut-yellow);
  display: block;
  font-size: 1.6rem;
  margin-top: 10px;
}

.hero-subtitle {
  font-size: 1.15rem;
  font-weight: 300;
  margin-bottom: 35px;
  color: #f1f5f9;
}

.hero-buttons {
  display: flex;
  gap: 20px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ==========================================================================
   SECCIÓN DE TRES COLUMNAS AMPLIADAS
   ========================================================================== */
.three-columns-section {
  padding: 80px 0;
  background-color: #f1f5f9;
  margin-top: -50px;
  position: relative;
  z-index: 10;
}

.columns-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 35px;
}

.column-card {
  background: var(--card-bg);
  border-radius: 10px;
  padding: 40px 30px;
  box-shadow: var(--shadow-premium);
  border-top: 5px solid var(--sinut-yellow);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  transition: var(--transition-smooth);
}

.column-card:hover {
  transform: translateY(-8px);
}

.column-card-header {
  text-align: center;
  margin-bottom: 20px;
}

.column-card-icon {
  font-size: 2.8rem;
  color: var(--sinut-brown);
  margin-bottom: 15px;
}

.column-card-title {
  font-size: 1.3rem;
  color: var(--sinut-dark-brown);
  margin-bottom: 10px;
}

.column-card-body {
  font-size: 0.95rem;
  color: #475569;
  margin-bottom: 25px;
}

.column-links {
  list-style: none;
  margin-bottom: 25px;
}

.column-links li {
  padding: 10px 0;
  border-bottom: 1px dashed #cbd5e1;
}

.column-links li a {
  color: var(--sinut-brown);
  font-weight: 700;
  display: flex;
  align-items: center;
  gap: 8px;
}

.territory-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 25px;
}

.tag {
  background: #e2e8f0;
  color: var(--sinut-dark-brown);
  padding: 6px 12px;
  border-radius: 4px;
  font-size: 0.8rem;
  font-weight: 700;
}

/* ==========================================================================
   SECCIÓN QUIÉNES SOMOS
   ========================================================================== */
.about-section {
  padding: 100px 0;
  background: #ffffff;
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

.about-image-wrapper {
  position: relative;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: var(--shadow-premium);
  border: 3px solid var(--sinut-yellow);
}

.section-subtitle {
  color: var(--sinut-brown);
  font-weight: 800;
  text-transform: uppercase;
  font-size: 0.9rem;
  letter-spacing: 1px;
  display: block;
  margin-bottom: 5px;
}

.section-title {
  font-size: 2.2rem;
  color: var(--sinut-dark-brown);
  position: relative;
}

.section-title::after {
  content: "";
  display: block;
  width: 70px;
  height: 4px;
  background-color: var(--sinut-yellow);
  margin-top: 10px;
}

.about-text {
  font-size: 1.05rem;
  color: #475569;
  margin-bottom: 20px;
}

/* ==========================================================================
   LÍNEA DE TIEMPO
   ========================================================================== */
.timeline-section {
  padding: 100px 0;
  background: var(--sinut-dark-brown);
  color: #ffffff;
}

.timeline-container {
  position: relative;
  max-width: 950px;
  margin: 50px auto 0;
}

.timeline-container::after {
  content: "";
  position: absolute;
  width: 4px;
  background: var(--sinut-yellow);
  top: 0;
  bottom: 0;
  left: 50%;
  margin-left: -2px;
}

.timeline-block {
  padding: 10px 40px;
  position: relative;
  width: 50%;
}

.timeline-block::after {
  content: "";
  position: absolute;
  width: 20px;
  height: 20px;
  right: -10px;
  background-color: var(--sinut-yellow);
  border: 4px solid var(--sinut-dark-brown);
  top: 15px;
  border-radius: 50%;
  z-index: 1;
}

.left {
  left: 0;
}
.right {
  left: 50%;
}
.right::after {
  left: -10px;
}

.timeline-content {
  padding: 25px 30px;
  background: rgba(255, 255, 255, 0.06);
  border-radius: 8px;
  border-left: 4px solid var(--sinut-yellow);
}

.timeline-year {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--sinut-yellow);
  margin-bottom: 5px;
}

/* ==========================================================================
   SECCIÓN DERECHOS LABORALES
   ========================================================================== */
.rights-section {
  padding: 100px 0;
  background: #f8f9fa;
}

.cards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 35px;
  margin-top: 50px;
}

.right-card {
  background: #ffffff;
  border-radius: 8px;
  padding: 35px 25px;
  text-align: center;
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  border-bottom: 3px solid transparent;
}

.right-card:hover {
  transform: translateY(-8px);
  border-bottom-color: var(--sinut-yellow);
  box-shadow: var(--shadow-premium);
}

.right-card-icon {
  width: 75px;
  height: 75px;
  background: rgba(74, 37, 17, 0.08);
  color: var(--sinut-brown);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2rem;
  margin: 0 auto 20px;
  transition: var(--transition-smooth);
}

.right-card:hover .right-card-icon {
  background: var(--sinut-brown);
  color: var(--sinut-yellow);
}

.right-card-title {
  font-size: 1.15rem;
  color: var(--sinut-dark-brown);
  margin-bottom: 15px;
}

/* ==========================================================================
   SECCIÓN AMBIENTAL Y SOCIAL
   ========================================================================== */
.social-section {
  padding: 100px 0;
  background:
    linear-gradient(rgba(44, 20, 8, 0.88), rgba(44, 20, 8, 0.88)),
    url("https://images.unsplash.com/photo-1511497584788-876761011935?auto=format&fit=crop&w=1920&q=80")
      center/cover fixed;
  color: #ffffff;
  text-align: center;
}

.social-content {
  max-width: 850px;
  margin: 0 auto;
}

.social-content .section-title::after {
  margin: 10px auto 0;
}

.social-text {
  font-size: 1.2rem;
  margin: 25px 0 40px;
  font-weight: 300;
}

/* ==========================================================================
   SECCIÓN RADIO DIGITAL
   ========================================================================== */
.radio-section {
  padding: 80px 0;
  background: #ffffff;
}

.radio-card {
  background: linear-gradient(
    135deg,
    var(--sinut-dark-brown) 0%,
    var(--sinut-brown) 100%
  );
  border-radius: 12px;
  padding: 45px;
  color: #ffffff;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 40px;
  align-items: center;
  border: 2px solid var(--sinut-yellow);
  box-shadow: var(--shadow-premium);
}

.radio-player-box {
  background: rgba(255, 255, 255, 0.05);
  padding: 30px;
  border-radius: 8px;
  text-align: center;
  border: 1px solid rgba(255, 203, 0, 0.3);
}

.radio-live-badge {
  display: inline-block;
  background: var(--bright-red);
  color: #ffffff;
  padding: 4px 14px;
  border-radius: 20px;
  font-size: 0.75rem;
  font-weight: 700;
  margin-bottom: 15px;
  animation: pulse-red 1.5s infinite;
}

@keyframes pulse-red {
  0% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
  100% {
    opacity: 1;
  }
}

/* ==========================================================================
   SECCIÓN NOTICIAS Y CATEGORÍAS
   ========================================================================== */
.news-section {
  padding: 100px 0;
  background: #f1f5f9;
}

.news-categories {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin: 30px 0 50px;
  flex-wrap: wrap;
}

.category-btn {
  padding: 8px 20px;
  border-radius: 20px;
  background: #ffffff;
  border: 1px solid #cbd5e1;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-dark);
  cursor: pointer;
  transition: var(--transition-smooth);
}

.category-btn.active,
.category-btn:hover {
  background: var(--sinut-brown);
  color: var(--sinut-yellow);
  border-color: var(--sinut-brown);
}

.news-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 35px;
}

.news-card {
  background: #ffffff;
  border-radius: 8px;
  overflow: hidden;
  box-shadow: 0 5px 15px rgba(0, 0, 0, 0.05);
  transition: var(--transition-smooth);
}

.news-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-premium);
}

.news-img {
  height: 200px;
  background-size: cover;
  background-position: center;
}

.news-content {
  padding: 25px;
}

.news-date {
  font-size: 0.8rem;
  color: #64748b;
  margin-bottom: 10px;
  display: block;
}

.news-title {
  font-size: 1.1rem;
  color: var(--sinut-dark-brown);
  margin-bottom: 10px;
  line-height: 1.3;
}

.news-excerpt {
  font-size: 0.9rem;
  color: #475569;
  margin-bottom: 20px;
}

/* ==========================================================================
   GALERÍA FAMILIA SINUT UNP
   ========================================================================== */
.family-section {
  padding: 100px 0;
  background: #ffffff;
  text-align: center;
}

.family-quote {
  font-size: 1.5rem;
  font-style: italic;
  color: var(--sinut-brown);
  max-width: 850px;
  margin: 20px auto 40px;
  font-weight: 300;
}

.family-gallery {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 15px;
}

.gallery-item {
  height: 230px;
  border-radius: 6px;
  overflow: hidden;
}

.gallery-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-smooth);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

/* ==========================================================================
   CALL TO ACTION Y CONTACTO
   ========================================================================== */
.cta-section {
  padding: 100px 0;
  background:
    linear-gradient(rgba(44, 20, 8, 0.92), rgba(44, 20, 8, 0.92)),
    url("https://images.unsplash.com/photo-1521737711867-e3b97375f902?auto=format&fit=crop&w=1920&q=80")
      center/cover;
  color: #ffffff;
  text-align: center;
  border-top: 4px solid var(--sinut-yellow);
  border-bottom: 4px solid var(--sinut-yellow);
}

.cta-title {
  font-size: 2.5rem;
  margin-bottom: 15px;
}

.cta-subtext {
  font-size: 1.2rem;
  color: #e2e8f0;
  margin-bottom: 35px;
}

.contact-section {
  padding: 100px 0;
  background: #f8f9fa;
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
}

.contact-form {
  background: #ffffff;
  padding: 40px;
  border-radius: 8px;
  box-shadow: var(--shadow-premium);
  border-top: 4px solid var(--sinut-brown);
}

.form-group {
  margin-bottom: 20px;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 700;
  margin-bottom: 8px;
  color: var(--sinut-dark-brown);
  text-transform: uppercase;
}

.form-control {
  width: 100%;
  padding: 12px 15px;
  border: 1px solid #cbd5e1;
  border-radius: 4px;
  font-family: inherit;
  font-size: 0.95rem;
}

textarea.form-control {
  resize: vertical;
  height: 120px;
}

.social-links {
  display: flex;
  gap: 15px;
  margin-top: 25px;
}

.social-icon {
  width: 45px;
  height: 45px;
  background: var(--sinut-brown);
  color: #ffffff;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  transition: var(--transition-smooth);
}

.social-icon:hover {
  background: var(--sinut-yellow);
  color: var(--sinut-dark-brown);
  transform: translateY(-3px);
}

/* ==========================================================================
   FOOTER (AJUSTADO A TONO CAFÉ MEDIO-ELEGANTE)
   ========================================================================== */
footer {
  background: linear-gradient(
    135deg,
    var(--sinut-brown) 0%,
    var(--sinut-dark-brown) 100%
  );
  color: #ffffff;
  padding: 65px 0 25px;
  border-top: 4px solid var(--sinut-yellow);
}

.footer-grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 40px;
}

.footer-brand p {
  color: #e2e8f0;
  margin-top: 15px;
  font-size: 0.9rem;
}

.footer-links h4 {
  color: var(--sinut-yellow);
  font-size: 1rem;
  margin-bottom: 20px;
}

.footer-links ul {
  list-style: none;
}

.footer-links li {
  margin-bottom: 10px;
}

.footer-links a {
  color: #e2e8f0;
  font-size: 0.9rem;
  transition: var(--transition-smooth);
}

.footer-links a:hover {
  color: var(--sinut-yellow);
  padding-left: 5px;
}

.footer-bottom {
  text-align: center;
  padding-top: 25px;
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 0.85rem;
  color: #cbd5e1;
}

/* ==========================================================================
   RESPONSIVE DESIGN
   ========================================================================== */
@media (max-width: 1024px) {
  .columns-grid,
  .cards-grid,
  .news-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .family-gallery {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .menu-toggle {
    display: block;
  }
  .nav-menu {
    position: absolute;
    top: 100%;
    left: 0;
    width: 100%;
    background: var(--sinut-dark-brown);
    flex-direction: column;
    padding: 20px 0;
    clip-path: circle(0% at 100% 0);
    transition: all 0.5s ease-in-out;
  }
  .nav-menu.active {
    clip-path: circle(140% at 100% 0);
  }
  .columns-grid,
  .cards-grid,
  .news-grid,
  .about-grid,
  .contact-grid,
  .radio-card,
  .footer-grid {
    grid-template-columns: 1fr;
  }
  .hero-title {
    font-size: 2rem;
  }
  .timeline-container::after {
    left: 31px;
  }
  .timeline-block {
    width: 100%;
    padding-left: 70px;
    padding-right: 25px;
  }
  .timeline-block::after {
    left: 21px;
  }
  .right {
    left: 0%;
  }
}