/* ==========================================================================
   LAURE RENEWABLE ENERGY - DESIGN SYSTEM & STYLESHEET
   ========================================================================== */

/* Imports */
@import url("https://cdn.jsdelivr.net/npm/@fontsource/sansation@latest/300.css");
@import url("https://cdn.jsdelivr.net/npm/@fontsource/sansation@latest/index.css");
@import url("https://cdn.jsdelivr.net/npm/@fontsource/sansation@latest/700.css");
@import url("https://cdnjs.cloudflare.com/ajax/libs/font-awesome/6.4.0/css/all.min.css");

/* CSS Variables */
:root {
  /* Colors */
  --primary: #81bd00;
  --primary-hover: #6fa000;
  --primary-rgb: 129, 189, 0;
  --primary-light: rgba(129, 189, 0, 0.08);
  --primary-light-hover: rgba(129, 189, 0, 0.15);
  --dark: #000000;
  --dark-soft: #121212;
  --dark-card: #1c1c1c;
  --gray: #797979;
  --gray-light: #f5f5f7;
  --gray-border: #e0e0e0;
  --white: #ffffff;
  --success: #2ec4b6;

  /* Fonts */
  --font-family: "Sansation", -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;

  /* Layout */
  --header-height: 80px;
  --border-radius: 12px;
  --border-radius-sm: 8px;
  --border-radius-lg: 24px;
  --transition: all 0.3s cubic-bezier(0.25, 0.8, 0.25, 1);
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 8px 24px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 16px 40px rgba(0, 0, 0, 0.12);
  --max-width: 1200px;
}

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

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

body {
  font-family: var(--font-family);
  background-color: var(--white);
  color: var(--dark-soft);
  line-height: 1.6;
  font-size: 1.125rem;
  /* ~18px, aligned with brand manual preference for readability */
  font-weight: 400;
  overflow-x: hidden;
}

/* Typography Custom Tracking (Brand Manual: 5em tracking represented as modern tracking layout) */
h1,
h2,
h3,
h4,
h5,
h6,
.brand-tracking,
.btn,
.nav-link,
.tab-btn {
  letter-spacing: 0.06em;
}

h1 {
  font-size: 3rem;
  font-weight: 700;
  line-height: 1.2;
  margin-bottom: 1.5rem;
  color: var(--dark);
}

h2 {
  font-size: 2.25rem;
  font-weight: 700;
  line-height: 1.3;
  margin-bottom: 1.5rem;
  position: relative;
  display: inline-block;
  color: var(--dark);
}

h2::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -8px;
  width: 50px;
  height: 4px;
  background-color: var(--primary);
  border-radius: 2px;
}

h3 {
  font-size: 1.5rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--dark);
}

p {
  margin-bottom: 1.5rem;
  color: var(--gray);
}

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

/* Layout Utilities */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

.section {
  padding: 80px 0;
  position: relative;
}

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

.section-header {
  text-align: center;
  max-width: 700px;
  margin: 0 auto 3.5rem auto;
}

.section-header p {
  font-size: 1.2rem;
  margin-top: 1rem;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.85rem 2rem;
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--border-radius);
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  gap: 0.5rem;
  box-shadow: var(--shadow-sm);
}

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

.btn-primary:hover {
  background-color: var(--primary-hover);
  box-shadow: 0 8px 20px rgba(129, 189, 0, 0.4);
  transform: translateY(-2px);
}

.btn-outline {
  background-color: transparent;
  border-color: var(--primary);
  color: var(--primary);
}

.btn-outline:hover {
  background-color: var(--primary);
  color: var(--white);
  box-shadow: 0 8px 20px rgba(129, 189, 0, 0.3);
  transform: translateY(-2px);
}

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

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

.btn-light {
  background-color: var(--white);
  color: var(--dark);
  border-color: var(--gray-border);
}

.btn-light:hover {
  background-color: var(--gray-light);
  transform: translateY(-2px);
}

.btn-sm {
  padding: 0.5rem 1.25rem;
  font-size: 0.9rem;
}

/* Header & Navigation */
header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--header-height);
  z-index: 1000;
  transition: var(--transition);
  background-color: transparent;
  display: flex;
  align-items: center;
}

header.scrolled {
  background-color: rgba(255, 255, 255, 0.85);
  backdrop-filter: blur(15px);
  -webkit-backdrop-filter: blur(15px);
  height: 70px;
  box-shadow: 0 4px 30px rgba(0, 0, 0, 0.03);
  border-bottom: 1px solid rgba(255, 255, 255, 0.3);
}

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

.logo {
  display: flex;
  align-items: center;
  height: 50px;
}

.logo img {
  height: 100%;
  width: auto;
  object-fit: contain;
  transition: var(--transition);
}

header.scrolled .logo img {
  height: 42px;
}

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

.nav-link {
  font-size: 0.95rem;
  font-weight: 700;
  color: var(--dark-soft);
  position: relative;
  padding: 0.5rem 0;
}

header:not(.scrolled) .nav-link {
  color: var(--white);
  text-shadow: 0 1px 3px rgba(0, 0, 0, 0.5);
}

header:not(.scrolled) .logo-container {
  filter: brightness(0) invert(1);
  /* make logo white on hero if transparent */
}

/* Ensure Logo displays properly */
.logo-container {
  display: flex;
  align-items: center;
  gap: 10px;
  transition: var(--transition);
}

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

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

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

.nav-actions {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.menu-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  cursor: pointer;
  color: var(--dark-soft);
}

header:not(.scrolled) .menu-toggle {
  color: var(--white);
}

/* Hero Section */
.hero {
  height: 100vh;
  min-height: 650px;
  position: relative;
  display: flex;
  align-items: center;
  color: var(--white);
  padding-top: var(--header-height);
  overflow: hidden;
  background-color: #000;
}

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

.hero-background img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0.55;
  filter: brightness(0.9) contrast(1.05);
}

.hero-background::after {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: linear-gradient(to bottom, rgba(0, 0, 0, 0.7) 0%, rgba(0, 0, 0, 0.4) 50%, rgba(0, 0, 0, 0.85) 100%);
}

.hero .container {
  position: relative;
  z-index: 2;
}

.hero-content {
  max-width: 750px;
  animation: fadeInUp 1s ease;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background-color: rgba(129, 189, 0, 0.2);
  border: 1px solid rgba(129, 189, 0, 0.4);
  color: var(--primary);
  padding: 0.5rem 1.25rem;
  border-radius: 50px;
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  text-transform: uppercase;
  backdrop-filter: blur(5px);
}

.hero-badge i {
  font-size: 0.8rem;
}

.hero h1 {
  color: var(--white);
  font-size: 3.5rem;
  margin-bottom: 1.5rem;
  text-shadow: 0 2px 10px rgba(0, 0, 0, 0.5);
}

.hero p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 1.25rem;
  margin-bottom: 2.5rem;
  text-shadow: 0 1px 5px rgba(0, 0, 0, 0.5);
}

.hero-buttons {
  display: flex;
  gap: 1.25rem;
  flex-wrap: wrap;
}

/* Floating leaf animation decor */
.floating-leaf {
  position: absolute;
  z-index: 2;
  pointer-events: none;
  opacity: 0.25;
  animation: float 8s ease-in-out infinite;
}

.leaf-1 {
  top: 15%;
  right: 10%;
  width: 80px;
  filter: hue-rotate(20deg);
  animation-duration: 10s;
}

.leaf-2 {
  bottom: 20%;
  left: 5%;
  width: 60px;
  transform: rotate(45deg);
  animation-duration: 7s;
}

/* La Marca Section */
.brand-section {
  position: relative;
  overflow: hidden;
}

.brand-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.brand-visual {
  position: relative;
  display: flex;
  justify-content: center;
  align-items: center;
}

.brand-img-wrapper {
  position: relative;
  width: 100%;
  max-width: 450px;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  background: var(--gray-light);
  aspect-ratio: 1;
}

.brand-img-wrapper img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition);
}

.brand-img-wrapper:hover img {
  transform: scale(1.05);
}

.brand-card-overlay {
  position: absolute;
  bottom: -20px;
  right: -20px;
  background-color: var(--primary);
  color: var(--white);
  padding: 1.5rem 2rem;
  border-radius: var(--border-radius);
  box-shadow: var(--shadow-md);
  max-width: 250px;
  z-index: 3;
}

.brand-card-overlay h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.brand-card-overlay p {
  color: rgba(255, 255, 255, 0.9);
  font-size: 0.9rem;
  margin-bottom: 0;
}

.brand-content {
  padding-right: 2rem;
}

.brand-features {
  margin-top: 2rem;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.brand-feat-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
}

.brand-feat-item i {
  color: var(--primary);
  font-size: 1.25rem;
  margin-top: 3px;
}

.brand-feat-item h5 {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 0.25rem;
}

.brand-feat-item p {
  font-size: 0.9rem;
  margin-bottom: 0;
}

/* Products Section */
.products-section {
  background-color: var(--white);
}

.product-filters {
  display: flex;
  justify-content: center;
  gap: 1rem;
  margin-bottom: 3.5rem;
}

.filter-btn {
  background: none;
  border: 1px solid var(--gray-border);
  padding: 0.75rem 2rem;
  border-radius: 50px;
  font-family: var(--font-family);
  font-size: 1rem;
  font-weight: 700;
  cursor: pointer;
  transition: var(--transition);
  color: var(--gray);
}

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

.filter-btn.active {
  background-color: var(--primary);
  border-color: var(--primary);
  color: var(--white);
  box-shadow: 0 4px 15px rgba(129, 189, 0, 0.3);
}

.products-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(350px, 1fr));
  gap: 2rem;
}

.product-card {
  background-color: var(--white);
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-border);
  overflow: hidden;
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
  display: flex;
  flex-direction: column;
  position: relative;
}

.product-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(129, 189, 0, 0.3);
}

.product-tag {
  position: absolute;
  top: 15px;
  left: 15px;
  background-color: var(--dark-soft);
  color: var(--white);
  padding: 0.35rem 0.85rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.product-card.sumergible .product-tag {
  background-color: var(--primary);
}

.product-card.superficie .product-tag {
  background-color: #0077b6;
  /* blue accent for surface water */
}

.product-card.paneles .product-tag {
  background-color: #f77f00;
  /* orange accent for solar panels */
}

.product-price {
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 0.75rem;
}

.stock-badge {
  position: absolute;
  top: 15px;
  right: 15px;
  background-color: var(--primary);
  color: var(--white);
  padding: 0.25rem 0.75rem;
  border-radius: 50px;
  font-size: 0.75rem;
  font-weight: 700;
  z-index: 2;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  box-shadow: var(--shadow-sm);
}

.stock-badge.out {
  background-color: #e63946;
}

.product-img {
  height: 230px;
  overflow: hidden;
  position: relative;
  background-color: var(--gray-light);
  display: flex;
  align-items: center;
  justify-content: center;
}

.product-img img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  padding: 1rem;
  transition: var(--transition);
}

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

.product-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex-grow: 1;
}

.product-title {
  font-size: 1.35rem;
  margin-bottom: 0.75rem;
}

.product-desc {
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
  line-height: 1.5;
  color: var(--gray);
  flex-grow: 1;
}

.product-specs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
  border-top: 1px solid var(--gray-light);
  padding-top: 1rem;
}

.spec-item {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.9rem;
}

.spec-item i {
  color: var(--primary);
  width: 16px;
  text-align: center;
}

.spec-value {
  font-weight: 700;
  color: var(--dark-soft);
}

.product-footer {
  display: flex;
  gap: 0.75rem;
}

.product-footer .btn {
  flex: 1;
}

/* Calculator Section */
.calculator-section {
  position: relative;
  background-color: var(--gray-light);
}

.calculator-card {
  background-color: var(--white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
  padding: 3rem;
  border: 1px solid var(--gray-border);
}

.calc-grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 3.5rem;
}

.calc-form-container {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.calc-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.calc-label {
  font-weight: 700;
  font-size: 1rem;
  color: var(--dark);
  display: flex;
  justify-content: space-between;
}

.calc-label-val {
  color: var(--primary);
  font-weight: 700;
}

.calc-type-selector {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1rem;
}

.type-option {
  border: 2px solid var(--gray-border);
  border-radius: var(--border-radius);
  padding: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
  cursor: pointer;
  transition: var(--transition);
  font-weight: 700;
  color: var(--gray);
}

.type-option i {
  font-size: 1.75rem;
}

.type-option:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.type-option.active {
  border-color: var(--primary);
  background-color: var(--primary-light);
  color: var(--primary);
}

/* Custom range slider styling */
.slider-container {
  position: relative;
  display: flex;
  flex-direction: column;
}

.calc-slider {
  -webkit-appearance: none;
  width: 100%;
  height: 8px;
  border-radius: 4px;
  background: var(--gray-border);
  outline: none;
  margin: 15px 0;
}

.calc-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 24px;
  height: 24px;
  border-radius: 50%;
  background: var(--primary);
  cursor: pointer;
  box-shadow: 0 2px 6px rgba(0, 0, 0, 0.2);
  transition: var(--transition);
}

.calc-slider::-webkit-slider-thumb:hover {
  transform: scale(1.15);
  background-color: var(--primary-hover);
}

.calc-inputs-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.calc-input-box {
  position: relative;
}

.calc-input-box input {
  width: 100%;
  padding: 0.75rem 1rem;
  border: 1px solid var(--gray-border);
  border-radius: var(--border-radius);
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
  transition: var(--transition);
}

.calc-input-box input:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

/* Results Display */
.calc-results-container {
  background: linear-gradient(135deg, var(--dark-soft) 0%, #1a1a1a 100%);
  color: var(--white);
  border-radius: var(--border-radius-lg);
  padding: 2.5rem;
  display: flex;
  flex-direction: column;
  justify-content: center;
  position: relative;
  overflow: hidden;
  box-shadow: var(--shadow-lg);
}

.calc-results-container::before {
  content: "";
  position: absolute;
  top: -50px;
  right: -50px;
  width: 150px;
  height: 150px;
  background-color: rgba(129, 189, 0, 0.1);
  border-radius: 50%;
  pointer-events: none;
}

.result-placeholder {
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1.5rem;
  color: rgba(255, 255, 255, 0.7);
}

.result-placeholder i {
  font-size: 3.5rem;
  color: var(--primary);
  animation: pulse 2s infinite;
}

.result-active {
  display: none;
  animation: fadeIn 0.5s ease;
}

.result-header-badge {
  display: inline-block;
  background-color: var(--primary-light);
  color: var(--primary);
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.result-pump-title {
  font-size: 2rem;
  color: var(--white);
  margin-bottom: 0.5rem;
  font-weight: 700;
}

.result-pump-tagline {
  color: var(--primary);
  font-weight: 700;
  margin-bottom: 1.5rem;
  font-size: 1.1rem;
}

.result-specs-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  margin-bottom: 2rem;
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
  padding: 1.5rem 0;
}

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

.result-spec-label {
  color: rgba(255, 255, 255, 0.7);
  font-size: 0.95rem;
}

.result-spec-val {
  font-weight: 700;
  font-size: 1.1rem;
  color: var(--white);
}

.result-actions {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

/* Advantages Grid */
.advantages-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 2rem;
  margin-bottom: 4rem;
}

.adv-card {
  background-color: var(--white);
  padding: 2rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-border);
  box-shadow: var(--shadow-sm);
  transition: var(--transition);
}

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

.adv-icon {
  width: 50px;
  height: 50px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: var(--border-radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.5rem;
  margin-bottom: 1.5rem;
  transition: var(--transition);
}

.adv-card:hover .adv-icon {
  background-color: var(--primary);
  color: var(--white);
  transform: rotateY(360deg);
}

.adv-card h4 {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.adv-card p {
  font-size: 0.95rem;
  margin-bottom: 0;
}

/* Technical Details Accordeon */
.tech-details-container {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 4rem;
  align-items: center;
}

.accordion {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.accordion-item {
  border: 1px solid var(--gray-border);
  border-radius: var(--border-radius);
  background-color: var(--white);
  overflow: hidden;
  transition: var(--transition);
}

.accordion-header {
  padding: 1.25rem 1.5rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  cursor: pointer;
  font-weight: 700;
  color: var(--dark);
  background-color: var(--white);
  user-select: none;
}

.accordion-header i {
  transition: var(--transition);
  color: var(--primary);
}

.accordion-item.active {
  border-color: var(--primary);
  box-shadow: var(--shadow-sm);
}

.accordion-item.active .accordion-header {
  background-color: var(--primary-light);
  color: var(--primary);
}

.accordion-item.active .accordion-header i {
  transform: rotate(180deg);
}

.accordion-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.3s ease-out;
  padding: 0 1.5rem;
}

.accordion-item.active .accordion-content {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid rgba(129, 189, 0, 0.1);
  max-height: 500px;
}

.accordion-content ul {
  list-style: none;
}

.accordion-content li {
  margin-bottom: 0.75rem;
  position: relative;
  padding-left: 1.5rem;
  font-size: 0.95rem;
  color: var(--gray);
}

.accordion-content li::before {
  content: "✔";
  position: absolute;
  left: 0;
  color: var(--primary);
}

/* Solar Panels Section */
.solar-section {
  color: var(--white);
  position: relative;
  background-color: var(--dark-soft);
  overflow: hidden;
}

.solar-bg-pattern {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.15;
  background-image: radial-gradient(var(--primary) 1px, transparent 0);
  background-size: 24px 24px;
}

.solar-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 4rem;
  align-items: center;
  position: relative;
  z-index: 2;
}

.solar-content h2 {
  color: var(--white);
}

.solar-content p {
  color: rgba(255, 255, 255, 0.8);
}

.solar-features-list {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
  margin-top: 2rem;
}

.solar-feature-box {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.solar-feature-icon {
  background-color: rgba(129, 189, 0, 0.15);
  border: 1px solid var(--primary);
  color: var(--primary);
  width: 45px;
  height: 45px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
  flex-shrink: 0;
}

.solar-feature-text h4 {
  font-size: 1.15rem;
  margin-bottom: 0.25rem;
  color: var(--white);
}

.solar-feature-text p {
  font-size: 0.95rem;
  margin-bottom: 0;
  color: rgba(255, 255, 255, 0.7);
}

.solar-visual {
  position: relative;
  border-radius: var(--border-radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow-lg);
  border: 1px solid rgba(255, 255, 255, 0.1);
  aspect-ratio: 16/10;
  background-color: #222;
}

.solar-visual img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* App Download Section */
.app-section {
  text-align: center;
  position: relative;
  background-color: var(--white);
}

.app-wrapper {
  background: linear-gradient(135deg, rgba(129, 189, 0, 0.1) 0%, rgba(129, 189, 0, 0.02) 100%);
  border-radius: var(--border-radius-lg);
  padding: 4rem 2rem;
  border: 1px solid rgba(129, 189, 0, 0.2);
  display: flex;
  flex-direction: column;
  align-items: center;
  max-width: 900px;
  margin: 0 auto;
}

.app-wrapper h2 {
  margin-bottom: 1rem;
}

.app-wrapper p {
  max-width: 600px;
  margin: 0 auto 2rem auto;
}

.app-badges {
  display: flex;
  gap: 1.25rem;
  justify-content: center;
  flex-wrap: wrap;
}

.app-badge {
  height: 55px;
  display: inline-block;
  transition: var(--transition);
}

.app-badge img {
  height: 100%;
  width: auto;
  border-radius: 8px;
}

.app-badge:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
}

/* Contact Form Section */
.contact-section {
  background-color: var(--white);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.3fr;
  gap: 4rem;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 2.5rem;
}

.contact-details {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.contact-item {
  display: flex;
  gap: 1.25rem;
  align-items: flex-start;
}

.contact-icon {
  width: 48px;
  height: 48px;
  background-color: var(--primary-light);
  color: var(--primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.contact-text h5 {
  font-size: 1rem;
  margin-bottom: 0.25rem;
  color: var(--dark);
}

.contact-text p,
.contact-text a {
  font-size: 0.95rem;
  color: var(--gray);
  margin-bottom: 0;
}

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

.social-links {
  display: flex;
  gap: 1rem;
}

.social-btn {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  background-color: var(--gray-light);
  color: var(--dark-soft);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.1rem;
  transition: var(--transition);
  border: 1px solid var(--gray-border);
}

.social-btn:hover {
  background-color: var(--primary);
  color: var(--white);
  border-color: var(--primary);
  transform: translateY(-3px);
}

.contact-form-container {
  background-color: var(--white);
  padding: 2.5rem;
  border-radius: var(--border-radius);
  border: 1px solid var(--gray-border);
  box-shadow: var(--shadow-md);
}

.form-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.25rem;
  margin-bottom: 1.5rem;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.form-group.full-width {
  grid-column: span 2;
}

.form-group label {
  font-weight: 700;
  font-size: 0.9rem;
  color: var(--dark);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 0.85rem 1rem;
  border: 1px solid var(--gray-border);
  border-radius: var(--border-radius-sm);
  font-family: var(--font-family);
  font-size: 1rem;
  outline: none;
  background-color: var(--white);
  transition: var(--transition);
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-light);
}

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

/* Success alert message for forms */
.form-status {
  padding: 1rem;
  border-radius: var(--border-radius-sm);
  margin-bottom: 1.5rem;
  font-size: 0.95rem;
  display: none;
  animation: fadeIn 0.3s ease;
}

.form-status.success {
  background-color: rgba(46, 196, 182, 0.15);
  border: 1px solid var(--success);
  color: #1a7a72;
  display: block;
}

.form-status.error {
  background-color: rgba(230, 57, 70, 0.15);
  border: 1px solid #e63946;
  color: #a8202a;
  display: block;
}

/* Footer */
footer {
  background-color: var(--dark-soft);
  color: rgba(255, 255, 255, 0.7);
  padding: 4rem 0 2rem 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.2fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.footer-logo {
  height: 45px;
  align-self: flex-start;
  filter: brightness(0) invert(1);
}

.footer-brand p {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.95rem;
  line-height: 1.5;
  margin-bottom: 0;
}

.footer-title {
  color: var(--white);
  font-size: 1.15rem;
  font-weight: 700;
  margin-bottom: 1.5rem;
  position: relative;
}

.footer-title::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -6px;
  width: 30px;
  height: 2px;
  background-color: var(--primary);
}

.footer-links {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}

.footer-links a {
  font-size: 0.95rem;
  color: rgba(255, 255, 255, 0.6);
}

.footer-links a:hover {
  color: var(--primary);
  padding-left: 4px;
}

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  flex-wrap: wrap;
  gap: 1rem;
  font-size: 0.9rem;
  color: rgba(255, 255, 255, 0.5);
}

.footer-legal-links {
  display: flex;
  gap: 1.5rem;
}

.footer-legal-links a:hover {
  color: var(--white);
}

/* Animations */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(20px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes fadeIn {
  from {
    opacity: 0;
  }

  to {
    opacity: 1;
  }
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0) rotate(0deg);
  }

  50% {
    transform: translateY(-15px) rotate(10deg);
  }
}

@keyframes pulse {
  0% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(129, 189, 0, 0.4);
  }

  70% {
    transform: scale(1.05);
    box-shadow: 0 0 0 15px rgba(129, 189, 0, 0);
  }

  100% {
    transform: scale(1);
    box-shadow: 0 0 0 0 rgba(129, 189, 0, 0);
  }
}

/* ==========================================================================
   RESPONSIVE STYLES
   ========================================================================== */

@media (max-width: 1024px) {
  h1 {
    font-size: 2.75rem;
  }

  .brand-grid,
  .calc-grid,
  .solar-grid,
  .tech-details-container,
  .contact-grid {
    gap: 2.5rem;
  }

  .footer-grid {
    grid-template-columns: 1fr 1fr;
    gap: 2.5rem;
  }
}

@media (max-width: 768px) {
  body {
    font-size: 1rem;
  }

  h1 {
    font-size: 2.25rem;
  }

  h2 {
    font-size: 1.75rem;
  }

  .section {
    padding: 60px 0;
  }

  /* Mobile Menu */
  .menu-toggle {
    display: block;
    z-index: 1001;
  }

  .nav-links {
    position: fixed;
    top: 0;
    right: -100%;
    width: 280px;
    height: 100vh;
    background-color: var(--white);
    flex-direction: column;
    align-items: flex-start;
    padding: 100px 2.5rem 2rem 2.5rem;
    box-shadow: -5px 0 30px rgba(0, 0, 0, 0.1);
    transition: right 0.4s ease;
    z-index: 1000;
    gap: 1.5rem;
  }

  header.scrolled .nav-links {
    background-color: var(--white);
  }

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

  .nav-link {
    font-size: 1.1rem;
    color: var(--dark-soft) !important;
    text-shadow: none !important;
    width: 100%;
  }

  header:not(.scrolled) .logo-container {
    filter: none;
    /* keep original logo colors on mobile */
  }

  header:not(.scrolled) .nav-link {
    color: var(--dark-soft);
  }

  .nav-actions {
    display: none;
    /* Hide header buttons on mobile to fit screen */
  }

  /* Layout stacks */
  .brand-grid,
  .calc-grid,
  .solar-grid,
  .tech-details-container,
  .contact-grid {
    grid-template-columns: 1fr;
  }

  .brand-content {
    padding-right: 0;
  }

  .brand-visual {
    order: -1;
  }

  .brand-card-overlay {
    bottom: -10px;
    right: -10px;
    padding: 1rem 1.5rem;
    max-width: 200px;
  }

  .calc-results-container {
    margin-top: 1.5rem;
    padding: 2rem 1.5rem;
  }

  .form-grid {
    grid-template-columns: 1fr;
  }

  .form-group.full-width {
    grid-column: span 1;
  }

  .product-filters {
    gap: 0.5rem;
    margin-bottom: 2.5rem;
    overflow-x: auto;
    justify-content: flex-start;
    padding: 0.5rem 1rem;
    -webkit-overflow-scrolling: touch;
    scrollbar-width: none;
    width: 100%;
  }

  .product-filters::-webkit-scrollbar {
    display: none;
  }

  .filter-btn {
    padding: 0.6rem 1.25rem;
    font-size: 0.9rem;
    flex-shrink: 0;
  }

  .products-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
    gap: 1.5rem;
  }

  .footer-bottom {
    flex-direction: column;
    text-align: center;
  }
}

@media (max-width: 480px) {
  h1 {
    font-size: 2rem;
  }

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

  .hero-buttons .btn {
    width: 100%;
  }

  .calc-inputs-grid {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }
}