/* ============================================================
   DURABOOK COLOMBIA — Premium Glassmorphic Stylesheet
   ============================================================ */

:root {
  --bg-primary: #070a13;
  --bg-secondary: #0c1122;
  --primary: #38bdf8;        /* Milcomtec Cyan */
  --accent-gold: #f59e0b;     /* Durabook Yellow/Gold */
  --text-primary: #f8fafc;
  --text-secondary: #94a3b8;
  --text-muted: #64748b;
  --border-glass: rgba(255, 255, 255, 0.08);
  --border-hover: rgba(245, 158, 11, 0.3);
  --gradient-bg: radial-gradient(circle at 50% 50%, #0d1527 0%, #070a13 100%);
  --gradient-card: linear-gradient(135deg, rgba(255, 255, 255, 0.05) 0%, rgba(255, 255, 255, 0.01) 100%);
  --shadow-gold: 0 10px 30px rgba(245, 158, 11, 0.15);
  --shadow-cyan: 0 10px 30px rgba(56, 189, 248, 0.15);
  
  --font-base: 'Outfit', sans-serif;
  --transition-fast: 0.25s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;
  --nav-height: 80px;
}

/* Reset & Base Styles */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font-base);
  background: var(--bg-primary);
  background-image: var(--gradient-bg);
  color: var(--text-primary);
  line-height: 1.6;
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
}

.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* Reusable UI Components */
.glass-card {
  background: var(--gradient-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  transition: all var(--transition-base);
}

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 28px;
  font-size: 0.95rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-decoration: none;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-primary {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #d97706 100%);
  color: #070a13;
  box-shadow: 0 4px 15px rgba(245, 158, 11, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 22px rgba(245, 158, 11, 0.45);
}

.btn-outline {
  border: 1px solid var(--border-glass);
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.02);
}

.btn-outline:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-2px);
}

.btn-block {
  display: block;
  width: 100%;
  text-align: center;
}

/* Typography & Titles */
.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 4rem;
}

.section-header .subtitle {
  font-size: 0.85rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.15em;
  color: var(--accent-gold);
  display: block;
  margin-bottom: 0.75rem;
}

.section-header .title {
  font-size: 2.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  margin-bottom: 1rem;
}

.section-header .desc {
  color: var(--text-secondary);
  font-size: 1.1rem;
}

.highlight-text {
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--primary) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

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

/* ========================================
   HEADER & NAVIGATION
   ======================================== -->
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  background: rgba(7, 10, 19, 0.8);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border-glass);
  z-index: 1000;
  transition: background var(--transition-fast);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 100%;
}

.logo {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  text-decoration: none;
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: linear-gradient(135deg, var(--accent-gold) 0%, var(--primary) 100%);
  color: #070a13;
  font-weight: 900;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: 8px;
  font-size: 1.1rem;
}

.logo-text {
  font-size: 1.25rem;
  font-weight: 800;
  color: var(--text-primary);
}

.logo-text span {
  color: var(--primary);
  font-weight: 400;
}

.nav-list {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
}

.nav-link {
  color: var(--text-secondary);
  text-decoration: none;
  font-weight: 600;
  font-size: 0.9rem;
  transition: color var(--transition-fast);
}

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

.nav-cta {
  background: linear-gradient(135deg, var(--accent-gold) 0%, #d97706 100%);
  color: #070a13;
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-weight: 700;
  text-decoration: none;
  font-size: 0.9rem;
  box-shadow: var(--shadow-gold);
  transition: all var(--transition-fast);
}

.nav-cta:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 18px rgba(245, 158, 11, 0.4);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 26px;
  height: 18px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.nav-toggle span {
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  transition: all var(--transition-fast);
}

/* Mobile Nav Toggle Active */
.nav-toggle.active span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}
.nav-toggle.active span:nth-child(2) {
  opacity: 0;
}
.nav-toggle.active span:nth-child(3) {
  transform: rotate(-45deg) translate(6px, -6px);
}

@media (max-width: 992px) {
  .nav-toggle {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--nav-height);
    right: -100%;
    width: 280px;
    height: calc(100vh - var(--nav-height));
    background: var(--bg-secondary);
    border-left: 1px solid var(--border-glass);
    padding: 3rem 2rem;
    transition: right var(--transition-base);
    z-index: 999;
  }

  .nav-menu.active {
    right: 0;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    gap: 2rem;
  }

  .nav-cta {
    display: inline-block;
    width: 100%;
    text-align: center;
  }
}

/* ========================================
   HERO SECTION
   ======================================== -->
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: calc(var(--nav-height) + 2rem);
  padding-bottom: 4rem;
  overflow: hidden;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: 
    radial-gradient(circle at 20% 30%, rgba(56, 189, 248, 0.08) 0%, transparent 50%),
    radial-gradient(circle at 80% 70%, rgba(245, 158, 11, 0.06) 0%, transparent 50%);
  z-index: 1;
}

.hero-container {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 650px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 6px 14px;
  background: rgba(245, 158, 11, 0.08);
  border: 1px solid rgba(245, 158, 11, 0.2);
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--accent-gold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 2rem;
}

.hero-badge .pulse-gold {
  width: 8px;
  height: 8px;
  background: var(--accent-gold);
  border-radius: 50%;
  box-shadow: 0 0 10px var(--accent-gold);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(245, 158, 11, 0.5); }
  70% { transform: scale(1); box-shadow: 0 0 0 10px rgba(245, 158, 11, 0); }
  100% { transform: scale(0.95); box-shadow: 0 0 0 0 rgba(245, 158, 11, 0); }
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 900;
  line-height: 1.1;
  letter-spacing: -0.02em;
  margin-bottom: 1.5rem;
}

.hero-desc {
  font-size: 1.15rem;
  color: var(--text-secondary);
  margin-bottom: 2.5rem;
}

.hero-actions {
  display: flex;
  gap: 1.5rem;
}

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

.hero-card {
  padding: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-cyan);
}

.floating-img {
  width: 100%;
  height: auto;
  max-width: 380px;
  object-fit: contain;
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
  100% { transform: translateY(0px); }
}

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 3rem;
  }
  .hero-content {
    margin: 0 auto;
  }
  .hero-badge {
    justify-content: center;
  }
  .hero-actions {
    justify-content: center;
  }
}

/* ========================================
   VALUE PROPOSITION
   ======================================== -->
.value-section {
  padding: 6rem 0;
}

.value-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 2rem;
}

.value-card {
  padding: 2.5rem 2rem;
}

.value-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-cyan);
}

.card-icon {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.value-card h3 {
  font-size: 1.3rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
}

.value-card p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  line-height: 1.6;
}

/* ========================================
   PORTFOLIO SECTION
   ======================================== -->
.portfolio-section {
  padding: 6rem 0;
  background: rgba(12, 17, 34, 0.4);
  border-top: 1px solid var(--border-glass);
  border-bottom: 1px solid var(--border-glass);
}

.product-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 2.5rem;
}

.product-card {
  overflow: hidden;
  display: flex;
  flex-direction: column;
}

.product-card:hover {
  border-color: var(--border-hover);
  box-shadow: var(--shadow-gold);
}

.product-img-box {
  background: #ffffff;
  height: 260px;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
  padding: 1.5rem;
}

.product-img-box img {
  max-height: 100%;
  max-width: 100%;
  object-fit: contain;
  transition: transform var(--transition-base);
}

.product-card:hover .product-img-box img {
  transform: scale(1.06);
}

.product-img-box .badge {
  position: absolute;
  top: 1.2rem;
  left: 1.2rem;
  background: var(--bg-primary);
  border: 1px solid var(--primary);
  color: var(--primary);
  padding: 4px 12px;
  font-size: 0.75rem;
  font-weight: 700;
  border-radius: var(--radius-full);
}

.product-img-box .badge-gold {
  border-color: var(--accent-gold);
  color: var(--accent-gold);
}

.product-info {
  padding: 2rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-info h3 {
  font-size: 1.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.product-description {
  color: var(--text-secondary);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
  line-height: 1.6;
}

.specs-list {
  list-style: none;
  margin-bottom: 2rem;
  flex-grow: 1;
}

.specs-list li {
  font-size: 0.9rem;
  padding: 0.5rem 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.05);
  display: flex;
  justify-content: space-between;
}

.specs-list li:last-child {
  border-bottom: none;
}

.specs-list strong {
  color: var(--text-muted);
}

.whatsapp-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  background: #25d366;
  color: #070a13;
  font-weight: 700;
  border-radius: var(--radius-full);
  text-decoration: none;
  padding: 10px 20px;
  transition: all var(--transition-fast);
}

.whatsapp-btn:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 15px rgba(37, 211, 102, 0.4);
}

/* ========================================
   SECTORS OF APPLICATION
   ======================================== -->
.sectors-section {
  padding: 6rem 0;
}

.sectors-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 2rem;
}

.sector-card {
  height: 250px;
  background-size: cover;
  background-position: center;
  border-radius: var(--radius-md);
  border: 1px solid var(--border-glass);
  padding: 2rem;
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  transition: all var(--transition-base);
}

.sector-card:hover {
  transform: translateY(-5px);
  border-color: var(--primary);
  box-shadow: var(--shadow-cyan);
}

.sector-card h3 {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.sector-card p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  line-height: 1.5;
}

/* ========================================
   FAQ SECTION (ACORDEÓN)
   ======================================= */
.faq-section {
  padding: 6rem 0;
  background: rgba(12, 17, 34, 0.4);
  border-top: 1px solid var(--border-glass);
}

.faq-accordion {
  max-width: 800px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.faq-item {
  background: var(--gradient-card);
  border: 1px solid var(--border-glass);
  border-radius: var(--radius-md);
  overflow: hidden;
  transition: all var(--transition-fast);
}

.faq-trigger {
  width: 100%;
  background: transparent;
  border: none;
  padding: 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  color: var(--text-primary);
  font-family: var(--font-base);
  font-size: 1.1rem;
  font-weight: 600;
  cursor: pointer;
  text-align: left;
}

.faq-trigger span:last-child {
  font-size: 1.5rem;
  color: var(--accent-gold);
  transition: transform var(--transition-fast);
}

.faq-content {
  max-height: 0;
  overflow: hidden;
  padding: 0 1.5rem;
  transition: all var(--transition-base) ease-out;
}

.faq-content p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  padding-bottom: 1.5rem;
  line-height: 1.7;
}

/* FAQ Active State */
.faq-item.active {
  border-color: var(--border-hover);
}

.faq-item.active .faq-trigger span:last-child {
  transform: rotate(45deg);
}

/* ========================================
   FOOTER
   ======================================== -->
.footer {
  background: #04060b;
  border-top: 1px solid var(--border-glass);
  padding: 5rem 0 0;
}

.footer-container {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 4rem;
  padding-bottom: 4rem;
}

.footer-brand .logo {
  margin-bottom: 1.5rem;
}

.footer-brand p {
  color: var(--text-secondary);
  font-size: 0.95rem;
  max-width: 320px;
}

.footer-links h4 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  color: var(--text-primary);
}

.footer-links p {
  color: var(--text-secondary);
  font-size: 0.9rem;
  margin-bottom: 0.75rem;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding: 1.5rem 0;
  text-align: center;
  font-size: 0.85rem;
  color: var(--text-muted);
}

@media (max-width: 768px) {
  .footer-container {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}