@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&family=Outfit:wght@300;400;500;600;700;800&display=swap');

/* CSS Variables for Premium Design System (White & Blue Theme similar to nilonvalves.com) */
:root {
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Inter', sans-serif;

  /* Color Palette */
  --color-bg-light: #ffffff;
  --color-bg-ice: #f3f8fc;
  --color-bg-darkest: #0a2540; /* Deepest Navy */
  --color-bg-darker: #0d3880;  /* Rich Corporate Blue */
  --color-bg-dark: #1e5fcb;    /* Bright Royal Blue */
  --color-bg-card: #ffffff;
  --color-border-light: #e6f0fa;
  --color-border-glass: rgba(255, 255, 255, 0.1);
  
  --color-primary: #0d3880; 
  --color-primary-hover: #1e5fcb;
  --color-accent: #f59e0b; /* Accent Amber/Gold */
  --color-accent-hover: #d97706;
  
  --color-text-primary: #12213a;   /* Dark text */
  --color-text-secondary: #536b8c; /* Muted text */
  --color-text-muted: #8fa0b5;
  --color-white: #ffffff;
  
  /* Layout Transitions */
  --transition-smooth: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: all 0.5s cubic-bezier(0.175, 0.885, 0.32, 1.275);
  
  --shadow-sm: 0 4px 6px -1px rgba(13, 56, 128, 0.05);
  --shadow-md: 0 10px 25px -5px rgba(13, 56, 128, 0.08);
  --shadow-lg: 0 20px 40px -15px rgba(13, 56, 128, 0.12);
  --shadow-glow: 0 0 20px rgba(13, 56, 128, 0.15);
}

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

body {
  background-color: var(--color-bg-light);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  line-height: 1.6;
  overflow-x: hidden;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  color: var(--color-text-primary);
  font-weight: 700;
  line-height: 1.2;
}

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

/* Base Layout and Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 2rem;
}

/* Top Bar: Contact & Language Selector */
.top-bar {
  background-color: var(--color-bg-darkest);
  color: var(--color-white);
  padding: 0 5%;
  font-size: 0.85rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  z-index: 1002;
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 40px;
}

.top-bar-left {
  display: flex;
  gap: 20px;
  align-items: center;
}

.top-contact-item {
  display: flex;
  align-items: center;
  gap: 8px;
}

.top-contact-item i {
  color: #e6f0fa;
}

.top-contact-item a:hover {
  text-decoration: underline;
}

/* Premium Navigation Bar */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
}

header.has-top-bar {
  top: 40px; /* Account for top-bar height */
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  height: 90px;
}

.logo {
  display: flex;
  align-items: center;
  gap: 12px;
}

.logo-icon {
  width: 45px;
  height: 45px;
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  border-radius: 12px;
  display: flex;
  justify-content: center;
  align-items: center;
  color: var(--color-white);
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 800;
  font-size: 1.4rem;
  color: var(--color-text-primary);
  letter-spacing: 0.5px;
}

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

.logo-sub {
  font-size: 0.75rem;
  color: var(--color-text-secondary);
  display: block;
  font-weight: 500;
  letter-spacing: 2px;
  text-transform: uppercase;
}

nav ul {
  display: flex;
  list-style: none;
  gap: 30px;
  align-items: center;
}

nav ul li a {
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 1px;
  padding: 8px 12px;
  border-radius: 6px;
  color: var(--color-text-primary);
}

nav ul li a:hover,
nav ul li a.active {
  color: var(--color-primary-hover);
}

/* Call to Action Button */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  font-family: var(--font-heading);
  font-weight: 600;
  font-size: 0.95rem;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: 8px;
  border: none;
  cursor: pointer;
  transition: var(--transition-bounce);
}

.btn-primary {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  color: var(--color-white);
  box-shadow: var(--shadow-sm);
}

.btn-primary:hover {
  transform: translateY(-3px);
  box-shadow: 0 10px 20px rgba(13, 56, 128, 0.2);
}

.btn-secondary {
  background: transparent;
  color: var(--color-primary);
  border: 1px solid var(--color-primary);
}

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

/* Hero Section */
.hero {
  padding: 240px 0 120px 0;
  position: relative;
  background: radial-gradient(circle at 80% 20%, rgba(13, 56, 128, 0.05), transparent 50%),
              radial-gradient(circle at 20% 80%, rgba(30, 95, 203, 0.04), transparent 50%);
  background-color: var(--color-bg-ice);
  min-height: 90vh;
  display: flex;
  align-items: center;
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 60px;
  align-items: center;
}

.hero-subtitle {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 3px;
  font-weight: 600;
  font-size: 0.9rem;
  margin-bottom: 20px;
  display: inline-block;
  border-left: 3px solid var(--color-primary);
  padding-left: 10px;
}

.hero h1 {
  font-size: 3.8rem;
  font-weight: 800;
  margin-bottom: 25px;
  letter-spacing: -1px;
  color: var(--color-text-primary);
}

.hero h1 span {
  background: linear-gradient(135deg, var(--color-primary), var(--color-primary-hover));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.15rem;
  color: var(--color-text-secondary);
  margin-bottom: 40px;
  max-width: 600px;
}

.hero-actions {
  display: flex;
  gap: 20px;
}

/* Abstract Valve Graphic */
.hero-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.valve-display {
  width: 320px;
  height: 320px;
  background: radial-gradient(circle, var(--color-white) 40%, transparent 70%);
  border-radius: 50%;
  border: 1px solid var(--color-border-light);
  position: relative;
  animation: float 6s ease-in-out infinite;
}

.valve-display::before {
  content: '';
  position: absolute;
  top: 10%;
  left: 10%;
  right: 10%;
  bottom: 10%;
  border: 2px dashed rgba(13, 56, 128, 0.15);
  border-radius: 50%;
  animation: spin 30s linear infinite;
}

.valve-core {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  width: 140px;
  height: 140px;
  background: linear-gradient(135deg, #ffffff, #f3f8fc);
  border-radius: 50%;
  border: 4px solid var(--color-primary);
  box-shadow: var(--shadow-md);
  display: flex;
  justify-content: center;
  align-items: center;
}

.valve-flange {
  position: absolute;
  width: 180px;
  height: 40px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  border-radius: 6px;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  z-index: -1;
}

.valve-flange.vertical {
  width: 40px;
  height: 180px;
  background: linear-gradient(180deg, var(--color-primary), var(--color-primary-hover));
}

.valve-wheel {
  position: absolute;
  width: 160px;
  height: 160px;
  border: 6px solid var(--color-text-secondary);
  border-radius: 50%;
  top: -20px;
  left: 50%;
  transform: translateX(-50%);
}

.valve-wheel::before {
  content: '';
  position: absolute;
  width: 6px;
  height: 100%;
  background: var(--color-text-secondary);
  left: 50%;
  transform: translateX(-50%);
}

/* Stats Section */
.stats-section {
  padding: 60px 0;
  background: var(--color-bg-light);
  border-top: 1px solid var(--color-border-light);
  border-bottom: 1px solid var(--color-border-light);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 30px;
  text-align: center;
}

.stat-card h3 {
  font-size: 3rem;
  color: var(--color-primary);
  font-weight: 800;
  margin-bottom: 5px;
}

.stat-card p {
  text-transform: uppercase;
  font-size: 0.85rem;
  letter-spacing: 2px;
  font-weight: 600;
  color: var(--color-text-secondary);
}

/* Section Header */
.section-header {
  text-align: center;
  margin-bottom: 70px;
}

.section-tag {
  color: var(--color-primary);
  text-transform: uppercase;
  letter-spacing: 2px;
  font-size: 0.85rem;
  font-weight: 600;
  margin-bottom: 15px;
  display: block;
}

.section-title {
  font-size: 2.5rem;
  color: var(--color-text-primary);
  margin-bottom: 20px;
}

.section-desc {
  max-width: 600px;
  margin: 0 auto;
  color: var(--color-text-secondary);
}

/* Glass/Modern Light Cards */
.glass-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(320px, 1fr));
  gap: 30px;
}

.glass-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: 16px;
  padding: 40px;
  box-shadow: var(--shadow-sm);
  transition: var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.glass-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-primary-hover));
  opacity: 0;
  transition: var(--transition-smooth);
}

.glass-card:hover {
  transform: translateY(-8px);
  border-color: rgba(13, 56, 128, 0.2);
  box-shadow: var(--shadow-lg);
}

.glass-card:hover::before {
  opacity: 1;
}

.card-icon {
  width: 60px;
  height: 60px;
  background: var(--color-bg-ice);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 30px;
  color: var(--color-primary);
  font-size: 1.5rem;
}

.glass-card h3 {
  font-size: 1.4rem;
  margin-bottom: 15px;
  color: var(--color-text-primary);
}

.glass-card p {
  color: var(--color-text-secondary);
  font-size: 0.95rem;
}

/* Info Section (Split Layout) */
.info-section {
  padding: 100px 0;
}

.info-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 80px;
  align-items: center;
}

.info-visual-placeholder {
  width: 100%;
  height: 400px;
  background: linear-gradient(135deg, #f3f8fc, #ffffff);
  border: 1px solid var(--color-border-light);
  border-radius: 20px;
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
  overflow: hidden;
  box-shadow: var(--shadow-sm);
}

.info-visual-placeholder::after {
  content: '';
  position: absolute;
  width: 200%;
  height: 200%;
  background: radial-gradient(circle, rgba(13, 56, 128, 0.05), transparent 60%);
  animation: float 10s ease-in-out infinite alternate;
}

.info-visual-content {
  text-align: center;
  z-index: 1;
}

.info-visual-icon {
  font-size: 4rem;
  color: var(--color-primary);
  margin-bottom: 20px;
}

/* Products Explorer Filter Page */
.filter-tabs {
  display: flex;
  justify-content: center;
  gap: 15px;
  margin-bottom: 50px;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--color-bg-ice);
  border: 1px solid var(--color-border-light);
  color: var(--color-text-secondary);
  padding: 10px 24px;
  border-radius: 30px;
  cursor: pointer;
  font-family: var(--font-heading);
  font-weight: 500;
  transition: var(--transition-smooth);
}

.filter-btn:hover,
.filter-btn.active {
  background: var(--color-primary);
  color: var(--color-white);
  border-color: var(--color-primary);
}

/* Product Cards Custom Layout */
.product-card {
  display: flex;
  flex-direction: column;
}

.product-specs {
  margin-top: 20px;
  padding-top: 20px;
  border-top: 1px solid var(--color-border-light);
  font-size: 0.85rem;
}

.spec-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 8px;
}

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

.spec-val {
  color: var(--color-text-primary);
  font-weight: 600;
}

/* Styled Table for Technical Specs */
.table-wrapper {
  overflow-x: auto;
  margin-top: 40px;
  border: 1px solid var(--color-border-light);
  border-radius: 12px;
  background: var(--color-bg-card);
  box-shadow: var(--shadow-sm);
}

table {
  width: 100%;
  border-collapse: collapse;
  text-align: left;
}

th {
  background-color: var(--color-bg-ice);
  color: var(--color-primary);
  font-family: var(--font-heading);
  font-weight: 600;
  padding: 16px 20px;
  font-size: 0.9rem;
  border-bottom: 1px solid var(--color-border-light);
}

td {
  padding: 16px 20px;
  font-size: 0.9rem;
  color: var(--color-text-primary);
  border-bottom: 1px solid var(--color-border-light);
}

tr:last-child td {
  border-bottom: none;
}

tr:hover td {
  background-color: rgba(13, 56, 128, 0.02);
}

/* Contact Page Form & Layout */
.contact-grid {
  display: grid;
  grid-template-columns: 0.8fr 1.2fr;
  gap: 60px;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 30px;
}

.contact-item {
  display: flex;
  gap: 20px;
  align-items: flex-start;
}

.contact-icon {
  width: 50px;
  height: 50px;
  background: var(--color-bg-ice);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
  font-size: 1.2rem;
  flex-shrink: 0;
}

.contact-item h4 {
  font-size: 1.1rem;
  color: var(--color-text-primary);
  margin-bottom: 5px;
}

.contact-item p {
  font-size: 0.95rem;
  color: var(--color-text-secondary);
}

.contact-form {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border-light);
  border-radius: 20px;
  padding: 40px;
  box-shadow: var(--shadow-sm);
}

.form-group {
  margin-bottom: 25px;
}

.form-group label {
  display: block;
  font-family: var(--font-heading);
  font-weight: 500;
  font-size: 0.9rem;
  margin-bottom: 8px;
  color: var(--color-text-primary);
}

.form-control {
  width: 100%;
  background: var(--color-bg-light);
  border: 1px solid var(--color-border-light);
  border-radius: 8px;
  padding: 12px 16px;
  color: var(--color-text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  transition: var(--transition-smooth);
}

.form-control:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 10px rgba(13, 56, 128, 0.1);
}

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

.form-status {
  margin-top: 20px;
  padding: 12px;
  border-radius: 6px;
  font-size: 0.9rem;
  display: none;
}

.form-status.success {
  display: block;
  background: rgba(16, 185, 129, 0.1);
  color: #10b981;
  border: 1px solid rgba(16, 185, 129, 0.2);
}

/* Footer Section */
footer {
  background: var(--color-bg-darkest);
  color: var(--color-white);
  border-top: 1px solid var(--color-border-light);
  padding: 80px 0 30px 0;
  margin-top: 100px;
}

footer h1, footer h2, footer h3, footer h4, footer h5, footer h6 {
  color: var(--color-white);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 50px;
  margin-bottom: 60px;
}

.footer-col h4 {
  font-size: 1.1rem;
  margin-bottom: 25px;
  text-transform: uppercase;
  letter-spacing: 1px;
  color: var(--color-accent);
}

.footer-col ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.footer-col ul li a {
  font-size: 0.95rem;
  color: #8fa0b5;
}

.footer-col ul li a:hover {
  color: var(--color-white);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: 30px;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 20px;
  font-size: 0.9rem;
  color: #8fa0b5;
}

/* Sticky WhatsApp Widget */
.whatsapp-widget {
  position: fixed;
  bottom: 30px;
  right: 30px;
  z-index: 999;
  background: #25d366;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 2rem;
  box-shadow: 0 10px 25px rgba(37, 211, 102, 0.3);
  transition: var(--transition-bounce);
}

.whatsapp-widget:hover {
  transform: scale(1.1) rotate(10deg);
}

/* Mobile Hamburger Menu */
.menu-toggle {
  display: none;
  flex-direction: column;
  gap: 6px;
  background: transparent;
  border: none;
  cursor: pointer;
  z-index: 1001;
}

.menu-toggle span {
  display: block;
  width: 28px;
  height: 3px;
  background: var(--color-text-primary);
  border-radius: 2px;
  transition: var(--transition-smooth);
}

/* Animations */
@keyframes float {
  0% { transform: translateY(0px) rotate(0deg); }
  50% { transform: translateY(-15px) rotate(3deg); }
  100% { transform: translateY(0px) rotate(0deg); }
}

@keyframes spin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

/* Responsive Styles */
@media (max-width: 1024px) {
  .hero h1 {
    font-size: 3rem;
  }
  .info-grid, .contact-grid {
    grid-template-columns: 1fr;
    gap: 40px;
  }
}

@media (max-width: 768px) {
  .hero-grid {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 40px;
  }
  .hero h1 {
    font-size: 2.6rem;
  }
  .hero p {
    margin-left: auto;
    margin-right: auto;
  }
  .hero-actions {
    justify-content: center;
  }
  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
  .menu-toggle {
    display: flex;
  }
  nav ul {
    position: fixed;
    top: 0;
    right: -100%;
    width: 250px;
    height: 100vh;
    background: var(--color-bg-light);
    flex-direction: column;
    padding: 100px 30px;
    align-items: flex-start;
    transition: var(--transition-smooth);
    border-left: 1px solid var(--color-border-light);
    box-shadow: var(--shadow-lg);
  }
  nav ul.active {
    right: 0;
  }
  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 480px) {
  .stats-grid, .footer-grid {
    grid-template-columns: 1fr;
  }
  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}