/* ========================================
   SISTEMA DE DISEÑO - VARIABLES CSS
   Persianas Pro - Alcoy y Comarca
   ======================================== */

:root {
  /* Colores de marca */
  --color-primary: #2A2A60;
  --color-secondary: #5BABA9;
  --color-accent: #F4B740;
  --color-white: #FFFFFF;
  --color-black: #1A1A1A;
  --color-gray-light: #F5F5F5;
  --color-gray-medium: #E0E0E0;
  --color-gray-dark: #757575;

  /* Fuentes */
  --font-primary: 'Montserrat', sans-serif;
  --font-secondary: 'Inter', sans-serif;

  /* Sistema de espaciado 8pt */
  --gap-xs: 8px;
  --gap-sm: 16px;
  --gap-md: 24px;
  --gap-lg: 32px;
  --gap-xl: 48px;
  --gap-2xl: 64px;

  /* Padding secciones */
  --section-padding: 64px;
  --section-padding-mobile: 32px;

  /* Contenedor máximo */
  --container-max: 1200px;

  /* Border radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;

  /* Sombras */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.1);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.15);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.2);

  /* Transiciones */
  --transition-fast: 0.2s ease;
  --transition-medium: 0.3s ease;
}

/* ========================================
   RESET Y BASE - MOBILE FIRST
   ======================================== */

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

body {
  font-family: var(--font-secondary);
  color: var(--color-black);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-primary);
  line-height: 1.3;
  margin-bottom: var(--gap-sm);
}

h1 {
  font-size: clamp(2rem, 5vw, 3rem);
  font-weight: 700;
}

h2 {
  font-size: clamp(1.75rem, 4vw, 2.5rem);
  font-weight: 600;
}

h3 {
  font-size: clamp(1.25rem, 3vw, 1.75rem);
  font-weight: 600;
}

h4 {
  font-size: clamp(1.1rem, 2vw, 1.25rem);
  font-weight: 500;
}

p {
  margin-bottom: var(--gap-sm);
}

a {
  text-decoration: none;
  color: inherit;
  transition: color var(--transition-fast);
}

ul {
  list-style: none;
}

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

/* ========================================
   LAYOUT - FLEXBOX
   ======================================== */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gap-md);
}

.flex-row {
  display: flex;
  flex-direction: row;
}

.flex-column {
  display: flex;
  flex-direction: column;
}

.flex-center {
  display: flex;
  justify-content: center;
  align-items: center;
}

.flex-between {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.flex-wrap {
  flex-wrap: wrap;
}

.gap-xs { gap: var(--gap-xs); }
.gap-sm { gap: var(--gap-sm); }
.gap-md { gap: var(--gap-md); }
.gap-lg { gap: var(--gap-lg); }
.gap-xl { gap: var(--gap-xl); }

/* ========================================
   HEADER & NAVIGATION
   ======================================== */

.header {
  background: var(--color-white);
  box-shadow: var(--shadow-sm);
  position: sticky;
  top: 0;
  z-index: 1000;
  padding: var(--gap-sm) 0;
}

.header-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--gap-md);
}

.logo {
  font-family: var(--font-primary);
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-primary);
}

.nav {
  display: flex;
  align-items: center;
  gap: var(--gap-md);
}

.nav-list {
  display: flex;
  gap: var(--gap-md);
  align-items: center;
}

.nav-link {
  position: relative;
  padding: var(--gap-xs) var(--gap-sm);
  transition: color var(--transition-fast);
}

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

/* Dropdown */
.dropdown {
  position: relative;
}

.dropdown-toggle {
  display: flex;
  align-items: center;
  gap: var(--gap-xs);
  cursor: pointer;
  padding: var(--gap-xs) var(--gap-sm);
  background: none;
  border: none;
  font-family: var(--font-secondary);
  font-size: 1rem;
  color: var(--color-black);
}

.dropdown-toggle:hover {
  color: var(--color-secondary);
}

.dropdown-menu {
  position: absolute;
  top: 100%;
  left: 0;
  background: var(--color-white);
  box-shadow: var(--shadow-md);
  border-radius: var(--radius-md);
  min-width: 200px;
  padding: var(--gap-sm);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: all var(--transition-medium);
}

.dropdown:hover .dropdown-menu {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.dropdown-item {
  display: block;
  padding: var(--gap-xs) var(--gap-sm);
  border-radius: var(--radius-sm);
  transition: background var(--transition-fast);
}

.dropdown-item:hover {
  background: var(--color-gray-light);
  color: var(--color-primary);
}

/* CTA Button */
.btn-cta {
  background: var(--color-accent);
  color: var(--color-black);
  padding: 12px 24px;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  box-shadow: var(--shadow-sm);
  font-family: var(--font-secondary);
  font-size: 1rem;
}

.btn-cta:hover {
  background: #F4C240;
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

/* ========================================
   MOBILE MENU TOGGLE
   ======================================== */

.mobile-menu-toggle {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: var(--gap-xs);
  flex-direction: column;
  gap: 5px;
}

.mobile-menu-toggle span {
  display: block;
  width: 25px;
  height: 3px;
  background: var(--color-primary);
  transition: all var(--transition-fast);
}

/* ========================================
   SECTIONS
   ======================================== */

section {
  padding: var(--section-padding) 0;
}

.section-dark {
  background: var(--color-gray-light);
}

.section-primary {
  background: var(--color-primary);
  color: var(--color-white);
}

.section-secondary {
  background: var(--color-secondary);
  color: var(--color-white);
}

/* ========================================
   HERO
   ======================================== */

.hero {
  min-height: 600px;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: var(--gap-2xl) var(--gap-md);
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-secondary) 100%);
  color: var(--color-white);
}

.hero h1 {
  color: var(--color-white);
  margin-bottom: var(--gap-md);
}

.hero-intro {
  font-size: 1.2rem;
  max-width: 700px;
  margin: 0 auto var(--gap-lg);
  opacity: 0.95;
}

.hero-cta {
  display: flex;
  gap: var(--gap-md);
  flex-wrap: wrap;
  justify-content: center;
}

.btn-primary {
  background: var(--color-accent);
  color: var(--color-black);
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: none;
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.1rem;
  font-family: var(--font-secondary);
  display: inline-flex;
  align-items: center;
}

.btn-primary:hover {
  background: #F4C240;
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.btn-secondary {
  background: transparent;
  color: var(--color-white);
  padding: 16px 32px;
  border-radius: var(--radius-md);
  font-weight: 600;
  border: 2px solid var(--color-white);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 1.1rem;
  font-family: var(--font-secondary);
}

.btn-secondary:hover {
  background: var(--color-white);
  color: var(--color-primary);
}

/* ========================================
   CARDS
   ======================================== */

.cards-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-lg);
  justify-content: center;
  padding:45px 0; 
}

.card {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  box-shadow: var(--shadow-md);
  flex: 1;
  min-width: 280px;
  max-width: 350px;
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  transition: all var(--transition-medium);
}

.card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.card-icon {
  width: 80px;
  height: 80px;
  background: var(--color-secondary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--gap-md);
  color: var(--color-white);
  font-size: 2.5rem;
}

.card h3 {
  color: var(--color-primary);
  margin-bottom: var(--gap-sm);
}

/* ========================================
   NARRATIVE SECTIONS
   ======================================== */

.narrative-section {
  display: flex;
  align-items: center;
  gap: var(--gap-xl);
  margin-bottom: var(--gap-2xl);
}

.narrative-section.reverse {
  flex-direction: row-reverse;
}

.narrative-content {
  flex: 1;
}

.narrative-image {
  flex: 1;
  min-width: 300px;
}

.narrative-image-placeholder {
  width: 100%;
  height: 400px;
  background: var(--color-gray-medium);
  border-radius: var(--radius-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-gray-dark);
  font-size: 1.2rem;
}

/* ========================================
   LISTADOS TÉCNICOS
   ======================================== */

.technical-lists {
  display: flex;
  gap: var(--gap-xl);
}

.list-column {
  flex: 1;
}

.list-column h3 {
  color: var(--color-white);
  margin-bottom: var(--gap-md);
  padding-bottom: var(--gap-sm);
  border-bottom: 3px solid var(--color-accent);
}

.list-column ul {
  list-style: none;
  padding: 0;
}

.list-column li {
  padding: var(--gap-sm);
  margin-bottom: var(--gap-xs);
  background: rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-sm);
  padding-left: var(--gap-lg);
  position: relative;
}

.list-column li::before {
  content: "✓";
  position: absolute;
  left: var(--gap-sm);
  color: var(--color-accent);
  font-weight: bold;
}

/* ========================================
   BENEFICIOS
   ======================================== */

.benefits-grid {
  display: flex;
  flex-wrap: wrap;
  gap: var(--gap-md);
  justify-content: center;
  margin-bottom: var(--gap-xl);
}

.benefit-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  flex: 1;
  min-width: 150px;
  max-width: 200px;
  padding: var(--gap-md);
}

.benefit-icon {
  width: 60px;
  height: 60px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--gap-sm);
  color: var(--color-white);
  font-size: 1.8rem;
}

.benefit-text {
  font-weight: 500;
  color: var(--color-primary);
}

/* ========================================
   TESTIMONIOS
   ======================================== */

.testimonials {
  display: flex;
  gap: var(--gap-lg);
  flex-wrap: wrap;
  justify-content: center;
}

.testimonial {
  background: var(--color-white);
  border-radius: var(--radius-lg);
  padding: var(--gap-lg);
  box-shadow: var(--shadow-md);
  flex: 1;
  min-width: 280px;
  max-width: 350px;
  border-left: 4px solid var(--color-accent);
}

.testimonial-quote {
  font-style: italic;
  margin-bottom: var(--gap-md);
  color: var(--color-gray-dark);
}

.testimonial-author {
  font-weight: 600;
  color: var(--color-primary);
}

.testimonial-location {
  font-size: 0.9rem;
  color: var(--color-gray-dark);
}

/* ========================================
   FAQ
   ======================================== */

.faq-container {
  max-width: 900px;
  margin: 0 auto;
}

.faq-item {
  background: var(--color-white);
  border-radius: var(--radius-md);
  margin-bottom: var(--gap-md);
  box-shadow: var(--shadow-sm);
  overflow: hidden;
}

.faq-question {
  width: 100%;
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--gap-md);
  background: var(--color-white);
  border: none;
  cursor: pointer;
  text-align: left;
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--color-primary);
  transition: background var(--transition-fast);
  font-family: var(--font-secondary);
}

.faq-question:hover {
  background: var(--color-gray-light);
}

.faq-icon {
  font-size: 1.5rem;
  transition: transform var(--transition-fast);
  font-weight: normal;
}

.faq-item.active .faq-icon {
  transform: rotate(45deg);
}

.faq-answer {
  max-height: 0;
  overflow: hidden;
  transition: max-height var(--transition-medium);
  padding: 0 var(--gap-md);
}

.faq-item.active .faq-answer {
  max-height: 500px;
  padding: 0 var(--gap-md) var(--gap-md);
}

/* ========================================
   CTA FINAL
   ======================================== */

.final-cta {
  background: var(--color-primary);
  color: var(--color-white);
  text-align: center;
  padding: var(--gap-2xl) var(--gap-md);
}

.final-cta h2 {
  color: var(--color-white);
  margin-bottom: var(--gap-md);
}

.final-cta p {
  font-size: 1.1rem;
  max-width: 800px;
  margin: 0 auto var(--gap-lg);
  opacity: 0.95;
}

/* ========================================
   FOOTER
   ======================================== */

.footer {
  background: var(--color-black);
  color: var(--color-white);
  padding: var(--gap-2xl) 0 var(--gap-md);
}

.footer-content {
  display: flex;
  gap: var(--gap-xl);
  max-width: var(--container-max);
  margin: 0 auto var(--gap-xl);
  padding: 0 var(--gap-md);
}

.footer-column {
  flex: 1;
  min-width: 200px;
}

.footer-column h4 {
  color: var(--color-accent);
  margin-bottom: var(--gap-md);
  font-size: 1.1rem;
}

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

.footer-column li {
  margin-bottom: var(--gap-xs);
}

.footer-column a {
  color: var(--color-white);
  opacity: 0.8;
  transition: opacity var(--transition-fast);
}

.footer-column a:hover {
  opacity: 1;
  color: var(--color-accent);
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.2);
  padding-top: var(--gap-md);
  text-align: center;
  font-size: 0.9rem;
  opacity: 0.7;
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--gap-md);
  padding-right: var(--gap-md);
}

/* ========================================
   RESPONSIVE - MOBILE FIRST
   ======================================== */

@media (max-width: 768px) {
  :root {
    --section-padding: var(--section-padding-mobile);
  }

  /* Header mobile */
  .nav-list {
    display: none;
    flex-direction: column;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--color-white);
    box-shadow: var(--shadow-md);
    padding: var(--gap-md);
  }

  .nav-list.active {
    display: flex;
  }

  .mobile-menu-toggle {
    display: flex;
  }

  .nav {
    position: relative;
  }

  .btn-cta {
    display: none;
  }

  /* Hero */
  .hero {
    min-height: 500px;
    padding: var(--gap-xl) var(--gap-md);
  }

  .hero-cta {
    flex-direction: column;
    width: 100%;
  }

  .hero-cta button {
    width: 100%;
    max-width: 300px;
  }

  /* Cards */
  .cards-container {
    flex-direction: column;
  }

  .card {
    max-width: 100%;
  }

  /* Narrative sections */
  .narrative-section,
  .narrative-section.reverse {
    flex-direction: column;
  }

  .narrative-image {
    min-width: 100%;
  }

  /* Technical lists */
  .technical-lists {
    flex-direction: column;
  }

  /* Footer */
  .footer-content {
    flex-direction: column;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 1.75rem;
  }

  h2 {
    font-size: 1.5rem;
  }

  .hero {
    min-height: 400px;
  }

  .container {
    padding: 0 var(--gap-sm);
  }
}

/* ========================================
   UTILITY CLASSES
   ======================================== */

.text-center {
  text-align: center;
}

.text-primary {
  color: var(--color-primary);
}

.text-secondary {
  color: var(--color-secondary);
}

.text-accent {
  color: var(--color-accent);
}

.mb-sm { margin-bottom: var(--gap-sm); }
.mb-md { margin-bottom: var(--gap-md); }
.mb-lg { margin-bottom: var(--gap-lg); }
.mb-xl { margin-bottom: var(--gap-xl); }

.mt-sm { margin-top: var(--gap-sm); }
.mt-md { margin-top: var(--gap-md); }
.mt-lg { margin-top: var(--gap-lg); }
.mt-xl { margin-top: var(--gap-xl); }