/* ===== CSS Variables ===== */
:root {
  --color-primary: #1d7c59;
  --color-primary-dark: #156347;
  --color-primary-light: #2a9d6e;
  --color-white: #FFFFFF;
  --color-gray-50: #FAFAFA;
  --color-gray-100: #F5F5F5;
  --color-gray-200: #EEEEEE;
  --color-gray-300: #E0E0E0;
  --color-gray-600: #757575;
  --color-gray-800: #424242;
  --color-gray-900: #212121;
  --color-error: #D32F2F;
  --color-success: #388E3C;

  --font-family: system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 2rem;
  --font-size-4xl: 2.5rem;

  --spacing-xs: 0.25rem;
  --spacing-sm: 0.5rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;

  --border-radius: 0.5rem;
  --border-radius-lg: 1rem;

  --shadow-sm: 0 1px 2px rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px rgba(0, 0, 0, 0.1);
  --shadow-lg: 0 10px 15px rgba(0, 0, 0, 0.1);

  --header-height: 70px;
  --max-width: 1280px;
}

/* ===== CSS Reset ===== */
*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
  scroll-padding-top: var(--header-height);
}

body {
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--color-gray-800);
  background-color: var(--color-white);
}

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

a {
  color: var(--color-primary);
  text-decoration: none;
  transition: color 0.2s ease;
}

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

ul, ol {
  list-style: none;
}

button {
  cursor: pointer;
  font-family: inherit;
  font-size: inherit;
}

/* ===== Utility Classes ===== */
.container {
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--spacing-md);
}

.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  border: 0;
}

/* ===== Typography ===== */
h1, h2, h3, h4, h5, h6 {
  color: var(--color-gray-900);
  line-height: 1.2;
  font-weight: 700;
}

h1 {
  font-size: var(--font-size-3xl);
}

h2 {
  font-size: var(--font-size-2xl);
}

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

/* ===== Buttons ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-sm) var(--spacing-lg);
  border: none;
  border-radius: var(--border-radius);
  font-weight: 600;
  text-align: center;
  transition: all 0.2s ease;
}

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

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

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

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

.btn-lg {
  padding: var(--spacing-md) var(--spacing-xl);
  font-size: var(--font-size-lg);
}

/* ===== Header ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  background-color: var(--color-white);
  box-shadow: var(--shadow-md);
  z-index: 1000;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: var(--spacing-sm);
  font-size: var(--font-size-xl);
  font-weight: 700;
  color: var(--color-primary);
}

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

.logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius);
  object-fit: contain;
}

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

.nav-link {
  color: var(--color-gray-800);
  font-weight: 500;
  padding: var(--spacing-sm) 0;
  position: relative;
}

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-primary);
  transition: width 0.2s ease;
}

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

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

.mobile-menu-btn {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--spacing-sm);
  background: none;
  border: none;
}

.mobile-menu-btn span {
  display: block;
  width: 25px;
  height: 3px;
  background-color: var(--color-gray-800);
  border-radius: 2px;
  transition: all 0.3s ease;
}

/* ===== Main Content ===== */
main {
  padding-top: var(--header-height);
}

.section {
  padding: var(--spacing-3xl) 0;
}

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

.section-title h2 {
  margin-bottom: var(--spacing-sm);
}

.section-title p {
  color: var(--color-gray-600);
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Hero Section ===== */
.hero {
  background: url('/images/hero-bg.jpg') center/cover no-repeat;
  color: var(--color-white);
  padding: var(--spacing-3xl) 0;
  min-height: 60vh;
  display: flex;
  align-items: center;
  position: relative;
}

.hero::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0, 0, 0, 0.5);
  z-index: 1;
}

.hero-content {
  max-width: 700px;
  position: relative;
  z-index: 2;
}

.hero h1 {
  color: var(--color-white);
  font-size: var(--font-size-4xl);
  margin-bottom: var(--spacing-lg);
}

.hero p {
  font-size: var(--font-size-lg);
  margin-bottom: var(--spacing-xl);
  opacity: 0.95;
}

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

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

/* ===== Product Grid ===== */
.filter-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
  justify-content: center;
  margin-bottom: var(--spacing-xl);
}

.filter-btn {
  padding: var(--spacing-sm) var(--spacing-lg);
  background-color: var(--color-gray-100);
  border: 2px solid transparent;
  border-radius: var(--border-radius);
  color: var(--color-gray-800);
  font-weight: 500;
  transition: all 0.2s ease;
}

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

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

.products-grid {
  display: grid;
  grid-template-columns: repeat(1, 1fr);
  gap: var(--spacing-xl);
}

.product-card {
  background-color: var(--color-white);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
  overflow: hidden;
  transition: all 0.3s ease;
}

.product-card:hover {
  transform: translateY(-5px);
  box-shadow: var(--shadow-lg);
}

.product-card.hidden {
  display: none;
}

.product-image {
  position: relative;
  height: 200px;
  background-color: var(--color-gray-200);
  overflow: hidden;
}

.product-image img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.product-badge {
  position: absolute;
  top: var(--spacing-sm);
  right: var(--spacing-sm);
  padding: var(--spacing-xs) var(--spacing-sm);
  background-color: var(--color-primary);
  color: var(--color-white);
  font-size: var(--font-size-sm);
  font-weight: 600;
  border-radius: var(--border-radius);
}

.product-badge.unavailable {
  background-color: var(--color-error);
}

.product-content {
  padding: var(--spacing-lg);
}

.product-category {
  font-size: var(--font-size-sm);
  color: var(--color-primary);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  margin-bottom: var(--spacing-xs);
}

.product-name {
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-sm);
}

.product-description {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
  font-size: var(--font-size-sm);
}

.product-price {
  font-size: var(--font-size-2xl);
  font-weight: 700;
  color: var(--color-primary);
  margin-bottom: var(--spacing-md);
}

.product-price span {
  font-size: var(--font-size-sm);
  font-weight: 400;
  color: var(--color-gray-600);
}

.product-specs {
  border-top: 1px solid var(--color-gray-200);
  padding-top: var(--spacing-md);
  margin-top: var(--spacing-md);
}

.product-specs ul {
  display: flex;
  flex-wrap: wrap;
  gap: var(--spacing-sm);
}

.product-specs li {
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  background-color: var(--color-gray-100);
  padding: var(--spacing-xs) var(--spacing-sm);
  border-radius: var(--border-radius);
}

/* ===== Contact Form ===== */
.contact-section {
  background-color: var(--color-gray-50);
}

.contact-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-2xl);
}

.contact-info h3 {
  margin-bottom: var(--spacing-lg);
}

.contact-info-item {
  display: flex;
  align-items: flex-start;
  gap: var(--spacing-md);
  margin-bottom: var(--spacing-lg);
}

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

.contact-info-item h4 {
  font-size: var(--font-size-base);
  margin-bottom: var(--spacing-xs);
}

.contact-info-item p {
  color: var(--color-gray-600);
}

.contact-form-wrapper {
  background-color: var(--color-white);
  padding: var(--spacing-xl);
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-md);
}

.form-group {
  margin-bottom: var(--spacing-lg);
}

.form-group label {
  display: block;
  font-weight: 600;
  margin-bottom: var(--spacing-sm);
  color: var(--color-gray-800);
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: var(--spacing-md);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--border-radius);
  font-family: inherit;
  font-size: var(--font-size-base);
  transition: border-color 0.2s ease;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  outline: none;
  border-color: var(--color-primary);
}

.form-group textarea {
  min-height: 150px;
  resize: vertical;
}

.form-group .required {
  color: var(--color-error);
}

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

.captcha-group .captcha-question {
  font-weight: 600;
  color: var(--color-gray-800);
  white-space: nowrap;
}

.captcha-group .captcha-equals {
  font-weight: 600;
  color: var(--color-gray-800);
}

.captcha-group input {
  width: 100px;
}

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

.form-submit .btn {
  width: 100%;
}

/* Honeypot field - invisible to users */
.hp-field {
  position: absolute;
  left: -9999px;
  opacity: 0;
  height: 0;
  width: 0;
  overflow: hidden;
}

/* Form status messages */
.form-status {
  padding: var(--spacing-md);
  border-radius: var(--border-radius);
  margin-bottom: var(--spacing-lg);
  font-weight: 500;
}

.form-status-success {
  background-color: #e8f5e9;
  color: var(--color-success);
  border: 1px solid var(--color-success);
}

.form-status-error {
  background-color: #fbe9e7;
  color: var(--color-error);
  border: 1px solid var(--color-error);
}

/* ===== Footer ===== */
.footer {
  background-color: var(--color-gray-900);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0 var(--spacing-lg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  margin-bottom: var(--spacing-xl);
}

.footer-brand h3 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-brand p {
  color: var(--color-gray-300);
}

.footer-links h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-links ul {
  display: flex;
  flex-direction: column;
  gap: var(--spacing-sm);
}

.footer-links a {
  color: var(--color-gray-300);
}

.footer-links a:hover {
  color: var(--color-primary-light);
}

.footer-contact h4 {
  color: var(--color-white);
  margin-bottom: var(--spacing-md);
}

.footer-contact p {
  color: var(--color-gray-300);
  margin-bottom: var(--spacing-sm);
}

.footer-bottom {
  border-top: 1px solid var(--color-gray-800);
  padding-top: var(--spacing-lg);
  text-align: center;
  color: var(--color-gray-600);
  font-size: var(--font-size-sm);
}

/* ===== Page Headers ===== */
.page-header {
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: var(--color-white);
  padding: var(--spacing-2xl) 0;
  text-align: center;
}

.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--spacing-sm);
}

.page-header p {
  opacity: 0.9;
  max-width: 600px;
  margin: 0 auto;
}

/* ===== Responsive Design ===== */
@media (min-width: 768px) {
  .products-grid {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .form-submit .btn {
    width: auto;
    min-width: 200px;
  }
}

@media (min-width: 1024px) {
  h1 {
    font-size: var(--font-size-4xl);
  }

  .products-grid {
    grid-template-columns: repeat(3, 1fr);
  }

  .hero {
    min-height: 70vh;
  }
}

@media (min-width: 1280px) {
  .container {
    padding: 0 var(--spacing-xl);
  }
}

/* Mobile Menu */
@media (max-width: 767px) {
  .mobile-menu-btn {
    display: flex;
  }

  .nav-menu {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--color-white);
    flex-direction: column;
    padding: var(--spacing-lg);
    gap: var(--spacing-md);
    box-shadow: var(--shadow-lg);
    transform: translateY(-100%);
    opacity: 0;
    visibility: hidden;
    transition: all 0.3s ease;
  }

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

  .nav-link {
    padding: var(--spacing-sm) 0;
    width: 100%;
    text-align: center;
  }

  .mobile-menu-btn.open span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 6px);
  }

  .mobile-menu-btn.open span:nth-child(2) {
    opacity: 0;
  }

  .mobile-menu-btn.open span:nth-child(3) {
    transform: rotate(-45deg) translate(6px, -7px);
  }
}

/* ===== About Section ===== */
.about-section {
  background-color: var(--color-white);
}

.about-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--spacing-xl);
  align-items: center;
}

@media (min-width: 768px) {
  .about-grid {
    grid-template-columns: 1fr 1fr;
    gap: var(--spacing-3xl);
  }
}

.about-image img {
  width: 100%;
  height: auto;
  border-radius: var(--border-radius-lg);
  box-shadow: var(--shadow-lg);
}

.about-content h2 {
  color: var(--color-gray-900);
  margin-bottom: var(--spacing-lg);
}

.about-content > div {
  text-align: justify;
}

.about-content p {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-md);
  line-height: 1.7;
}

.about-content p:last-child {
  margin-bottom: 0;
}

/* ===== Homepage Contact Form ===== */
.contact-form-container {
  max-width: 700px;
  margin: 0 auto;
}

/* ===== CGL Page ===== */
.cgl-content {
  max-width: 900px;
  margin: 0 auto;
}

.cgl-article {
  margin-bottom: var(--spacing-xl);
  padding-bottom: var(--spacing-xl);
  border-bottom: 1px solid var(--color-gray-200);
  text-align: justify;
}

.cgl-article:last-of-type {
  border-bottom: none;
}

.cgl-article h2 {
  color: var(--color-primary-dark);
  font-size: var(--font-size-xl);
  margin-bottom: var(--spacing-md);
}

.cgl-article p {
  color: var(--color-gray-700);
  line-height: 1.8;
  margin-bottom: var(--spacing-sm);
}

.cgl-article p:last-child {
  margin-bottom: 0;
}

.cgl-footer {
  margin-top: var(--spacing-xl);
  padding: var(--spacing-lg);
  background-color: var(--color-gray-50);
  border-radius: var(--border-radius-md);
  text-align: center;
}

.cgl-footer p {
  color: var(--color-gray-600);
  margin-bottom: var(--spacing-sm);
}

.cgl-footer a {
  color: var(--color-primary);
}

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