/* ============================================
   intellilight - Design System
   Premium Solar Lighting Website
   ============================================ */

/* === IMPORTS === */
@import url('https://fonts.googleapis.com/css2?family=Montserrat:wght@300;400;500;600;700;800&family=Open+Sans:wght@400;600&display=swap');

/* === CSS RESET & BASE === */
* {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  /* Color Palette - Solar Energy Theme (Blue) */
  --color-primary: #357ABD;
  --color-primary-dark: #2d67a0;
  --color-primary-light: #9abdde;
  --color-secondary: #f1c40f;
  
  /* Background Colors */
  --color-bg-primary: #ffffff;
  --color-bg-secondary: #f8f9fa;
  --color-bg-tertiary: #e9ecef;
  --color-bg-overlay: rgba(53, 122, 189, 0.85);
  
  /* Text Colors */
  --color-text-primary: #333333;
  --color-text-secondary: #555555;
  --color-text-muted: #777777;
  --color-white: #ffffff;
  
  /* Accent & Status */
  --color-accent: #3498db;
  --color-success: #357ABD;
  --color-warning: #f1c40f;
  --color-error: #e74c3c;
  
  /* Gradients */
  --gradient-primary: linear-gradient(135deg, #357ABD 0%, #2d67a0 100%);
  --gradient-light: linear-gradient(180deg, #ffffff 0%, #f8f9fa 100%);
  
  /* Spacing System (4px base) */
  --space-xs: 0.5rem;   /* 8px */
  --space-sm: 1rem;     /* 16px */
  --space-md: 1.5rem;   /* 24px */
  --space-lg: 2rem;     /* 32px */
  --space-xl: 3rem;     /* 48px */
  --space-2xl: 4rem;    /* 64px */
  --space-3xl: 6rem;    /* 96px */
  
  /* Typography */
  --font-primary: 'Open Sans', -apple-system, BlinkMacSystemFont, sans-serif;
  --font-heading: 'Montserrat', -apple-system, BlinkMacSystemFont, sans-serif;
  
  --font-size-xs: 0.75rem;    /* 12px */
  --font-size-sm: 0.875rem;   /* 14px */
  --font-size-base: 1rem;     /* 16px */
  --font-size-lg: 1.125rem;   /* 18px */
  --font-size-xl: 1.25rem;    /* 20px */
  --font-size-2xl: 1.5rem;    /* 24px */
  --font-size-3xl: 2rem;      /* 32px */
  --font-size-4xl: 2.5rem;    /* 40px */
  --font-size-5xl: 3rem;      /* 48px */
  --font-size-6xl: 4rem;      /* 64px */
  
  /* Border Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 20px;
  --radius-full: 9999px;
  
  /* Shadows */
  --shadow-sm: 0 2px 4px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 8px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 8px 16px rgba(0, 0, 0, 0.1);
  --shadow-xl: 0 12px 24px rgba(0, 0, 0, 0.15);
  
  /* Transitions */
  --transition-fast: 150ms ease-in-out;
  --transition-base: 300ms ease-in-out;
  --transition-slow: 500ms ease-in-out;
  
  /* Z-index */
  --z-dropdown: 1000;
  --z-sticky: 1020;
  --z-fixed: 1030;
  --z-modal: 1040;
  --z-popover: 1050;
  --z-tooltip: 1060;
}

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

body {
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-text-primary);
  background-color: var(--color-bg-primary);
  overflow-x: hidden;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  display: flex;
  flex-direction: column;
  min-height: 100vh;
}

/* === TYPOGRAPHY === */
h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-heading);
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: var(--space-md);
  color: var(--color-text-primary);
}

h1 {
  font-size: var(--font-size-5xl);
  font-weight: 800;
  color: var(--color-text-primary);
}

h2 {
  font-size: var(--font-size-4xl);
  font-weight: 700;
}

h3 {
  font-size: var(--font-size-3xl);
  font-weight: 600;
}

h4 {
  font-size: var(--font-size-2xl);
  font-weight: 600;
}

p {
  margin-bottom: var(--space-sm);
  color: var(--color-text-secondary);
}

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

a:hover {
  color: var(--color-primary-dark);
}

/* === LAYOUT === */
.container {
  width: 100%;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.section {
  padding: var(--space-3xl) 0;
  position: relative;
}

.bg-light {
  background-color: var(--color-bg-secondary);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-2xl);
}

.section-title {
  position: relative;
  display: inline-block;
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 1px;
}

.section-title::after {
  content: '';
  position: absolute;
  bottom: -10px;
  left: 50%;
  transform: translateX(-50%);
  width: 60px;
  height: 3px;
  background-color: var(--color-primary);
}

.section-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-text-muted);
  max-width: 700px;
  margin: 0 auto;
}

/* === NAVIGATION === */
.top-bar {
  background-color: var(--color-bg-secondary);
  border-bottom: 1px solid var(--color-bg-tertiary);
  padding: var(--space-xs) 0;
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
}

.top-bar-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

.top-bar-info {
  display: flex;
  gap: var(--space-md);
}

.top-bar-info span i {
  color: var(--color-primary);
  margin-right: 4px;
}

.top-bar-right {
  display: flex;
  align-items: center;
  gap: var(--space-lg);
}

.top-bar-social {
  display: flex;
  gap: var(--space-sm);
}

.top-bar-social a {
  color: var(--color-text-muted);
  font-size: 14px;
  transition: color var(--transition-fast);
}

.top-bar-social a:hover {
  color: var(--color-primary);
}

.top-bar-search {
  position: relative;
}

.search-form {
  display: flex;
  align-items: center;
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-bg-tertiary);
  border-radius: 20px;
  padding: 2px 12px;
  transition: all var(--transition-fast);
}

.search-form:focus-within {
  border-color: var(--color-primary);
  box-shadow: 0 0 0 2px var(--color-primary-light);
}

.search-input {
  border: none;
  background: none;
  padding: 4px 8px;
  font-size: 13px;
  width: 150px;
  color: var(--color-text-primary);
}

.search-input:focus {
  outline: none;
}

.search-btn {
  border: none;
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  padding: 4px;
  transition: color var(--transition-fast);
}

.search-btn:hover {
  color: var(--color-primary);
}

.search-results {
  position: absolute;
  top: 100%;
  right: 0;
  width: 300px;
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-lg);
  border-radius: var(--radius-sm);
  margin-top: 8px;
  z-index: var(--z-dropdown);
  display: none;
  max-height: 400px;
  overflow-y: auto;
}

.search-results.active {
  display: block;
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm);
  border-bottom: 1px solid var(--color-bg-tertiary);
  transition: background-color var(--transition-fast);
}

.search-result-item:last-child {
  border-bottom: none;
}

.search-result-item:hover {
  background-color: var(--color-bg-secondary);
}

.search-result-img {
  width: 40px;
  height: 40px;
  background-size: cover;
  background-position: center;
  border-radius: 4px;
}

.search-result-info h4 {
  font-size: 14px;
  margin-bottom: 2px;
}

.search-result-info p {
  font-size: 12px;
  margin-bottom: 0;
}

.navbar {
  position: sticky;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-fixed);
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-sm);
  transition: all var(--transition-base);
}

.nav-container {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--space-sm) var(--space-lg);
  max-width: 1200px;
  margin: 0 auto;
}

.nav-logo {
  display: flex;
  align-items: center;
}

.logo-image {
  height: 100px;
  width: auto;
}

.nav-menu {
  display: flex;
  list-style: none;
  gap: var(--space-lg);
  align-items: center;
}

.nav-link {
  color: var(--color-text-primary);
  font-weight: 600;
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--space-xs) 0;
  transition: all var(--transition-fast);
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width var(--transition-fast);
}

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

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

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

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
}

.nav-toggle span {
  width: 25px;
  height: 2px;
  background-color: var(--color-text-primary);
  transition: all var(--transition-base);
}

/* === BUTTONS === */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 24px;
  font-family: var(--font-heading);
  font-size: var(--font-size-sm);
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-base);
  border: none;
}

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

.btn-primary:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.btn-secondary {
  background-color: transparent;
  color: var(--color-text-primary);
  border: 2px solid var(--color-text-primary);
}

.btn-secondary:hover {
  background-color: var(--color-text-primary);
  color: var(--color-white);
  transform: translateY(-2px);
}

.btn-large {
  padding: 16px 32px;
  font-size: var(--font-size-base);
}

.btn-block {
  width: 100%;
}

/* === CARDS === */
.card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-bg-tertiary);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  transition: all var(--transition-base);
}

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

/* === HERO SECTION === */
.hero {
  height: 600px;
  /* background-image removed for slideshow */
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: center;
}

.hero-slides {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 1;
}

.hero-slide {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1s ease-in-out;
}

.hero-slide.active {
  opacity: 1;
}

.hero-overlay-box {
  position: relative;
  z-index: 2;
  background-color: var(--color-bg-overlay);
  padding: var(--space-2xl);
  max-width: 500px;
  color: var(--color-white);
  margin-left: var(--space-lg);
  border-radius: var(--radius-sm);
  animation: fadeInLeft 1s ease-out;
}

.hero-title {
  font-size: var(--font-size-4xl);
  color: var(--color-white);
  margin-bottom: var(--space-md);
  text-transform: uppercase;
  letter-spacing: 2px;
}

.hero-subtitle {
  font-size: var(--font-size-lg);
  color: var(--color-white);
  margin-bottom: var(--space-lg);
  opacity: 0.9;
}

/* === FEATURED CATEGORIES === */
.categories-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-top: var(--space-2xl);
}

@media (max-width: 768px) {
  .categories-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 480px) {
  .categories-grid {
    grid-template-columns: 1fr;
  }
}

.category-card {
  background-color: var(--color-primary);
  color: var(--color-white);
  padding: var(--space-xl) var(--space-md);
  text-align: center;
  border-radius: var(--radius-sm);
  transition: all var(--transition-base);
  cursor: pointer;
}

.category-card:hover {
  background-color: var(--color-primary-dark);
  transform: translateY(-5px);
  box-shadow: var(--shadow-md);
}

.category-icon {
  font-size: 3rem;
  margin-bottom: var(--space-sm);
}

.category-name {
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 1px;
}

/* === PRODUCT GRID === */
.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-lg);
  margin-top: var(--space-2xl);
}

.product-card {
  background-color: var(--color-bg-primary);
  border: 1px solid var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  overflow: hidden;
  transition: all var(--transition-base);
}

.product-card:hover {
  box-shadow: var(--shadow-lg);
}

.product-image {
  height: 250px;
  background-size: contain;
  background-position: center;
  background-repeat: no-repeat;
  position: relative;
}

.product-badge {
  position: absolute;
  top: 10px;
  right: 10px;
  background-color: var(--color-secondary);
  color: var(--color-text-primary);
  padding: 4px 12px;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  border-radius: 2px;
}

.product-content {
  padding: var(--space-md);
  text-align: center;
}

.product-category {
  font-size: var(--font-size-xs);
  color: var(--color-text-muted);
  text-transform: uppercase;
  margin-bottom: 4px;
}

.product-title {
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-sm);
}

/* === PROMO BANNERS === */
.promo-section {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
  margin: var(--space-3xl) 0;
}

.promo-banner {
  background-color: var(--color-bg-secondary);
  padding: var(--space-2xl);
  display: flex;
  align-items: center;
  gap: var(--space-lg);
  border-radius: var(--radius-sm);
}

.promo-icon {
  font-size: 3rem;
  color: var(--color-primary);
}

.promo-text h3 {
  margin-bottom: 4px;
}

/* === FOOTER === */
.footer {
  background-color: #222222;
  color: #ffffff;
  padding: var(--space-lg) 0 var(--space-lg);
  margin-top: auto;
  font-size: 0.9rem;
}

.footer-content {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
}

.footer-section h4 {
  color: var(--color-white);
  text-transform: uppercase;
  font-size: var(--font-size-lg);
  margin-bottom: var(--space-lg);
  position: relative;
}



.footer-logo {
  width: 100%;
  max-width: 450px;
  height: auto;
  margin-bottom: var(--space-md);
}

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

.footer address {
  font-style: normal;
}

.footer-links li {
  margin-bottom: var(--space-sm);
}

.footer-links a {
  color: #ffffff;
  transition: all var(--transition-fast);
  font-size: 0.9rem;
}

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

.footer-bottom {
  border-top: 1px solid #333333;
  padding-top: var(--space-lg);
  text-align: center;
  font-size: 0.9rem;
}

.footer-about-text,
.footer p {
  color: #ffffff;
  line-height: 1.7;
}
/* === ANIMATIONS === */
@keyframes fadeInLeft {
  from {
    opacity: 0;
    transform: translateX(-50px);
  }
  to {
    opacity: 1;
    transform: translateX(0);
  }
}

@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(30px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.fade-in {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease-out, transform 0.6s ease-out;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === FORMS === */
.premium-form {
  max-width: 800px;
  margin: 0 auto;
}

/* === ANIMATED SVG ICONS === */
.svg-draw-icon {
  width: 48px;
  height: 48px;
  stroke: var(--color-primary);
  stroke-width: 2;
  fill: none;
  stroke-linecap: round;
  stroke-linejoin: round;
  margin-bottom: var(--space-md);
}

.svg-draw-icon path, 
.svg-draw-icon polyline, 
.svg-draw-icon circle, 
.svg-draw-icon line, 
.svg-draw-icon rect {
  stroke-dasharray: 200;
  stroke-dashoffset: 200;
  fill: transparent !important;
}

.fade-in.visible .svg-draw-icon path,
.fade-in.visible .svg-draw-icon polyline,
.fade-in.visible .svg-draw-icon circle,
.fade-in.visible .svg-draw-icon line,
.fade-in.visible .svg-draw-icon rect {
  animation: drawSvgIcon 2s ease-in-out forwards;
}

@keyframes drawSvgIcon {
  to {
    stroke-dashoffset: 0;
  }
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-md);
  margin-bottom: var(--space-md);
}

.form-group {
  margin-bottom: var(--space-md);
}

.form-label {
  display: block;
  font-size: var(--font-size-xs);
  font-weight: 700;
  text-transform: uppercase;
  color: var(--color-text-muted);
  margin-bottom: 6px;
}

.input-wrapper {
  position: relative;
}

.input-icon {
  position: absolute;
  left: 12px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--color-text-muted);
}

.form-input, .form-select, .form-textarea {
  width: 100%;
  padding: 12px 12px 12px 35px;
  border: 1px solid var(--color-bg-tertiary);
  border-radius: var(--radius-sm);
  font-family: var(--font-primary);
  font-size: var(--font-size-base);
  transition: all var(--transition-base);
}

.form-textarea {
  padding-left: 12px;
  min-height: 120px;
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-primary-light);
}

/* === TABLES === */
.specs-table {
  width: 100%;
  border-collapse: collapse;
  margin-bottom: var(--space-2xl);
  background-color: var(--color-bg-primary);
  box-shadow: var(--shadow-sm);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

.specs-table th, .specs-table td {
  padding: var(--space-md) var(--space-lg);
  text-align: left;
  border-bottom: 1px solid var(--color-bg-tertiary);
}

.specs-table th {
  background-color: var(--color-bg-secondary);
  color: var(--color-text-primary);
  font-weight: 700;
  text-transform: uppercase;
  font-size: var(--font-size-xs);
  letter-spacing: 1px;
}

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

.specs-table tr:nth-child(even) {
  background-color: rgba(0, 0, 0, 0.02);
}

.specs-table td:first-child {
  font-weight: 600;
  color: var(--color-text-primary);
  width: 30%;
}

.specs-table td:last-child {
  color: var(--color-text-secondary);
}

/* === RESPONSIVE DESIGN === */
@media (max-width: 992px) {
  .hero {
    height: 500px;
    justify-content: center;
  }
  
  .hero-overlay-box {
    margin-left: 0;
    text-align: center;
  }
  
  .promo-section {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 768px) {
  .nav-menu {
    position: fixed;
    top: 70px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 70px);
    background-color: var(--color-bg-primary);
    flex-direction: column;
    padding: var(--space-xl);
    transition: left var(--transition-base);
    box-shadow: var(--shadow-lg);
  }
  
  .nav-menu.active {
    left: 0;
  }
  
  .nav-toggle {
    display: flex;
    z-index: calc(var(--z-fixed) + 1);
  }
  
  .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(7px, -6px);
  }
  
  .hero {
    height: auto;
    min-height: 400px;
    padding: var(--space-lg);
  }
  
  .hero-overlay-box {
    max-width: 100%;
    padding: var(--space-lg);
  }
  
  .hero-title {
    font-size: var(--font-size-2xl);
  }
  
  .hero-subtitle {
    font-size: var(--font-size-base);
  }
  
  .form-row {
    grid-template-columns: 1fr;
  }
  
  .top-bar-info {
    display: none;
  }
}