/* === VS Biogas — Global Styles === */

:root {
  --color-primary: #2d6a4f;
  --color-primary-light: #52b788;
  --color-primary-dark: #1b4332;
  --color-accent: #f4a261;
  --color-accent-hover: #e08b3e;
  --color-dark: #1a1a2e;
  --color-text: #333;
  --color-text-light: #666;
  --color-light: #f0f7f4;
  --color-white: #fff;
  --color-border: #e0e0e0;
  --font-main: 'Segoe UI', system-ui, -apple-system, 'Helvetica Neue', sans-serif;
  --max-width: 1200px;
  --header-height: 72px;
  --radius: 12px;
  --shadow: 0 4px 24px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 8px 32px rgba(0, 0, 0, 0.12);
  --transition: 0.3s ease;
}

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

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

body {
  font-family: var(--font-main);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
}

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

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

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

/* === Container === */
.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 1.5rem;
}

/* === Section base === */
section {
  padding: 5rem 0;
}

.section-title {
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 1rem;
  text-align: center;
}

.section-subtitle {
  font-size: 1.1rem;
  color: var(--color-text-light);
  text-align: center;
  max-width: 600px;
  margin: 0 auto 3rem;
}

/* === Header === */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--header-height);
  z-index: 1000;
  background: transparent;
  transition: background var(--transition), box-shadow var(--transition);
}

.site-header.header-scrolled {
  background: rgba(255, 255, 255, 0.97);
  box-shadow: 0 2px 20px rgba(0, 0, 0, 0.08);
  backdrop-filter: blur(10px);
}

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

.logo {
  font-size: 1.5rem;
  font-weight: 800;
  color: var(--color-white);
  letter-spacing: -0.5px;
  transition: color var(--transition);
}

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

.header-scrolled .logo {
  color: var(--color-dark);
}

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

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

.nav-links a {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 500;
  font-size: 0.95rem;
  transition: color var(--transition);
  position: relative;
}

.nav-links a::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--color-primary-light);
  transition: width var(--transition);
}

.nav-links a:hover::after {
  width: 100%;
}

.header-scrolled .nav-links a {
  color: var(--color-text);
}

.header-scrolled .nav-links a:hover {
  color: var(--color-primary);
}

.lang-switch {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  margin-left: 1.5rem;
  font-size: 0.85rem;
  font-weight: 600;
}

.lang-switch span {
  color: var(--color-white);
  opacity: 0.6;
}

.lang-switch .lang-active {
  opacity: 1;
}

.lang-switch a {
  color: rgba(255, 255, 255, 0.6);
  font-weight: 600;
  font-size: 0.85rem;
}

.lang-switch a:hover {
  color: var(--color-white);
}

.header-scrolled .lang-switch span {
  color: var(--color-text);
}

.header-scrolled .lang-switch .lang-active {
  color: var(--color-dark);
}

.header-scrolled .lang-switch a {
  color: var(--color-text-light);
}

.header-scrolled .lang-switch a:hover {
  color: var(--color-primary);
}

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  background: none;
  border: none;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--color-white);
  transition: all var(--transition);
}

.header-scrolled .nav-toggle span {
  background: var(--color-dark);
}

/* === Hero === */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  background: url('../img/biogas-reactor.jpg') center/cover no-repeat;
  position: relative;
  overflow: hidden;
  padding: 0;
}

.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(27, 67, 50, 0.88) 0%, rgba(45, 106, 79, 0.82) 50%, rgba(64, 145, 108, 0.78) 100%);
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -30%;
  left: -10%;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.04);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 700px;
}

.hero-content h1 {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--color-white);
  line-height: 1.2;
  margin-bottom: 1.5rem;
}

.hero-content p {
  font-size: 1.2rem;
  color: rgba(255, 255, 255, 0.85);
  margin-bottom: 2.5rem;
  line-height: 1.8;
}

.hero-tagline {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  font-size: 1rem;
  font-weight: 700;
  color: var(--color-white);
  text-transform: uppercase;
  letter-spacing: 2px;
  padding: 0.5rem 1.2rem;
  border: 2px solid rgba(255, 255, 255, 0.5);
  border-radius: 50px;
  margin-bottom: 2rem;
}

.hero-tagline .lv-flag {
  display: inline-block;
  width: 24px;
  height: 14px;
  border-radius: 2px;
  background: linear-gradient(
    to bottom,
    #9b2335 0%, #9b2335 40%,
    #fff 40%, #fff 60%,
    #9b2335 60%, #9b2335 100%
  );
  opacity: 0.75;
  flex-shrink: 0;
}

.btn {
  display: inline-block;
  padding: 0.9rem 2.2rem;
  border-radius: 50px;
  font-weight: 600;
  font-size: 1rem;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
}

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

.btn-primary:hover {
  background: var(--color-accent-hover);
  color: var(--color-white);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(244, 162, 97, 0.35);
}

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

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

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

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

.about-text p {
  margin-bottom: 1.2rem;
  color: var(--color-text);
}

.about-image {
  position: relative;
  border-radius: var(--radius);
  overflow: hidden;
  aspect-ratio: 4/3;
}

.about-image img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
}

/* === Production === */
.production {
  background: var(--color-light);
}

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

.production-card {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2.5rem 2rem;
  box-shadow: var(--shadow);
  transition: transform var(--transition), box-shadow var(--transition);
}

.production-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.production-card-icon {
  width: 56px;
  height: 56px;
  border-radius: 12px;
  background: linear-gradient(135deg, var(--color-primary-light), var(--color-primary));
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 1.5rem;
  font-size: 1.5rem;
}

.production-card h3 {
  font-size: 1.3rem;
  color: var(--color-dark);
  margin-bottom: 0.8rem;
}

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

/* === IT Solutions === */
.it-solutions {
  background: var(--color-white);
}

.it-highlight {
  margin-bottom: 2.5rem;
}

.it-highlight-inner {
  display: flex;
  gap: 2rem;
  align-items: flex-start;
  background: linear-gradient(135deg, #f0f7f4, #e8f5ee);
  border-left: 4px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 2.5rem;
}

.it-highlight-icon {
  font-size: 2.5rem;
  flex-shrink: 0;
  margin-top: 0.2rem;
}

.it-highlight-text h3 {
  font-size: 1.4rem;
  color: var(--color-primary-dark);
  margin-bottom: 0.8rem;
}

.it-highlight-text p {
  color: var(--color-text);
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.it-highlight-text p:last-child {
  margin-bottom: 0;
}

.it-services-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.it-service-card {
  background: var(--color-light);
  border-radius: var(--radius);
  padding: 2rem 1.8rem;
  transition: transform var(--transition), box-shadow var(--transition);
  border: 1px solid transparent;
}

.it-service-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
  border-color: var(--color-primary-light);
}

.it-service-icon {
  font-size: 1.8rem;
  margin-bottom: 1rem;
}

.it-service-card h4 {
  font-size: 1.15rem;
  color: var(--color-dark);
  margin-bottom: 0.6rem;
}

.it-service-card p {
  color: var(--color-text-light);
  font-size: 0.9rem;
  line-height: 1.6;
}

@media (max-width: 768px) {
  .it-highlight-inner {
    flex-direction: column;
    gap: 1rem;
    padding: 1.5rem;
  }
}

/* === Stats Counter === */
.stats {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  color: var(--color-white);
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
  text-align: center;
}

.stat-item {
  padding: 1.5rem 1rem;
}

.stat-icon {
  font-size: 2rem;
  margin-bottom: 0.8rem;
}

.stat-number {
  font-size: 2.8rem;
  font-weight: 800;
  line-height: 1.2;
  margin-bottom: 0.3rem;
}

.stat-number .counter {
  font-variant-numeric: tabular-nums;
}

.stat-unit {
  font-size: 1rem;
  opacity: 0.8;
  font-weight: 500;
}

.stat-label {
  font-size: 0.9rem;
  opacity: 0.7;
  margin-top: 0.3rem;
}

.stats-link {
  text-align: center;
  margin-top: 2.5rem;
}

.stats-link a {
  color: rgba(255, 255, 255, 0.9);
  font-weight: 600;
  font-size: 1rem;
  border-bottom: 2px solid rgba(255, 255, 255, 0.3);
  padding-bottom: 2px;
  transition: all var(--transition);
}

.stats-link a:hover {
  color: var(--color-white);
  border-color: var(--color-white);
}

/* === Gallery === */
.gallery {
  background: var(--color-white);
}

.gallery-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1rem;
}

.gallery-item {
  border-radius: var(--radius);
  aspect-ratio: 16/10;
  position: relative;
  overflow: hidden;
  cursor: pointer;
  transition: transform var(--transition), box-shadow var(--transition);
  background: var(--color-light);
}

.gallery-item.gallery-wide {
  grid-column: 1 / -1;
  aspect-ratio: 21/9;
}

.gallery-item img {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s ease;
}

.gallery-item:hover {
  transform: scale(1.01);
  box-shadow: 0 8px 30px rgba(0, 0, 0, 0.15);
}

.gallery-item:hover img {
  transform: scale(1.05);
}

.gallery-item-label {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 2rem 1.2rem 1rem;
  background: linear-gradient(transparent, rgba(0, 0, 0, 0.55));
  color: var(--color-white);
  font-weight: 600;
  font-size: 0.95rem;
  opacity: 0;
  transition: opacity var(--transition);
}

.gallery-item:hover .gallery-item-label {
  opacity: 1;
}

/* === Contact === */
.contact {
  background: var(--color-light);
}

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

.contact-info h3 {
  font-size: 1.4rem;
  color: var(--color-dark);
  margin-bottom: 1.5rem;
}

.contact-detail {
  display: flex;
  gap: 1rem;
  margin-bottom: 1.2rem;
  align-items: flex-start;
}

.contact-detail-icon {
  width: 40px;
  height: 40px;
  min-width: 40px;
  border-radius: 10px;
  background: var(--color-primary);
  color: var(--color-white);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1rem;
}

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

.contact-detail strong {
  display: block;
  color: var(--color-dark);
  margin-bottom: 0.2rem;
}

.contact-cta-inner {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 3rem 2.5rem;
  box-shadow: var(--shadow);
  text-align: center;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
}

.contact-cta-inner h3 {
  font-size: 1.5rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.contact-cta-inner p {
  color: var(--color-text-light);
  margin-bottom: 2rem;
  max-width: 320px;
}

.contact-cta-inner .btn {
  font-size: 1.05rem;
  padding: 1rem 2.5rem;
}

/* === Footer === */
.site-footer {
  background: var(--color-dark);
  color: rgba(255, 255, 255, 0.7);
  padding: 3rem 0;
}

.footer-inner {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.footer-links {
  display: flex;
  list-style: none;
  gap: 1.5rem;
}

.footer-links a {
  color: rgba(255, 255, 255, 0.6);
  font-size: 0.9rem;
}

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

/* === Scroll Animations === */
.animate-on-scroll {
  opacity: 0;
  transform: translateY(30px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.animate-on-scroll.visible {
  opacity: 1;
  transform: translateY(0);
}

/* === Statistics Page === */
.stats-page-hero {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 8rem 0 4rem;
  text-align: center;
  color: var(--color-white);
}

.stats-page-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.stats-page-hero p {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto;
}

.stats-detailed {
  background: var(--color-white);
  padding: 4rem 0;
}

.stats-detailed-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 2rem;
}

.stat-detail-card {
  background: var(--color-light);
  border-radius: var(--radius);
  padding: 2.5rem;
  text-align: center;
  transition: transform var(--transition), box-shadow var(--transition);
}

.stat-detail-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-hover);
}

.stat-detail-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.stat-detail-number {
  font-size: 3.2rem;
  font-weight: 800;
  color: var(--color-primary);
  line-height: 1.2;
}

.stat-detail-unit {
  font-size: 1.1rem;
  color: var(--color-primary-light);
  font-weight: 600;
}

.stat-detail-label {
  font-size: 1rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
}

/* CO₂ & kWh comparisons */
.co2-card,
.kwh-card {
  grid-column: 1 / -1;
}

.co2-comparisons {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid rgba(0, 0, 0, 0.08);
  width: 100%;
}

.co2-comparison-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  background: var(--color-white);
  padding: 0.85rem 1rem;
  border-radius: 10px;
  box-shadow: 0 1px 4px rgba(0, 0, 0, 0.05);
  transition: transform var(--transition), box-shadow var(--transition);
}

.co2-comparison-item:hover {
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.1);
}

.co2-comp-icon {
  font-size: 1.5rem;
  flex-shrink: 0;
}

.co2-comp-text {
  font-size: 0.9rem;
  color: var(--color-text);
  line-height: 1.3;
}

.co2-comp-text strong {
  color: var(--color-primary);
  font-weight: 700;
}

/* Chart bars */
.chart-section {
  background: var(--color-light);
  padding: 4rem 0;
}

.chart-container {
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
}

.chart-title {
  font-size: 1.4rem;
  font-weight: 700;
  color: var(--color-dark);
  margin-bottom: 2rem;
}

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

.bar-row {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.bar-label {
  width: 80px;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--color-text);
  text-align: right;
  flex-shrink: 0;
}

.bar-track {
  flex: 1;
  height: 32px;
  background: var(--color-light);
  border-radius: 6px;
  overflow: hidden;
}

.bar-fill {
  height: 100%;
  background: linear-gradient(90deg, var(--color-primary-light), var(--color-primary));
  border-radius: 6px;
  transition: width 1s ease;
  display: flex;
  align-items: center;
  padding-left: 12px;
}

.bar-fill-projected {
  background: repeating-linear-gradient(
    -45deg,
    var(--color-primary-light),
    var(--color-primary-light) 8px,
    var(--color-primary) 8px,
    var(--color-primary) 16px
  );
  opacity: 0.7;
}

.bar-value {
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-white);
  white-space: nowrap;
}

/* How it works */
.how-it-works {
  background: var(--color-white);
  padding: 4rem 0;
}

.steps-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 2rem;
  margin-top: 2rem;
}

.step-card {
  text-align: center;
  padding: 2rem 1.5rem;
}

.step-number {
  width: 48px;
  height: 48px;
  border-radius: 50%;
  background: var(--color-primary);
  color: var(--color-white);
  font-size: 1.2rem;
  font-weight: 800;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}

.step-card h3 {
  font-size: 1.1rem;
  color: var(--color-dark);
  margin-bottom: 0.5rem;
}

.step-card p {
  font-size: 0.9rem;
  color: var(--color-text-light);
}

/* === Certificate Banner (index) === */
.cert-banner {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 3rem 0;
}

.cert-banner-inner {
  display: flex;
  align-items: center;
  gap: 2.5rem;
}

.cert-banner-logo {
  flex-shrink: 0;
  width: 120px;
  height: 120px;
  background: var(--color-white);
  border-radius: 16px;
  padding: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
}

.cert-banner-logo img {
  width: 100%;
  height: auto;
}

.cert-banner-text {
  flex: 1;
}

.cert-banner-text h2 {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.cert-banner-text p {
  color: rgba(255, 255, 255, 0.85);
  font-size: 0.95rem;
  line-height: 1.6;
  max-width: 600px;
}

.cert-banner .btn {
  flex-shrink: 0;
  white-space: nowrap;
}

@media (max-width: 768px) {
  .cert-banner-inner {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
  }

  .cert-banner-text p {
    margin: 0 auto;
  }
}

/* === Certificates Page === */
.cert-hero {
  background: linear-gradient(135deg, var(--color-primary-dark), var(--color-primary));
  padding: 8rem 0 4rem;
  text-align: center;
  color: var(--color-white);
}

.cert-hero h1 {
  font-size: 2.8rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

.cert-hero p {
  font-size: 1.1rem;
  opacity: 0.85;
  max-width: 600px;
  margin: 0 auto;
}

.cert-section {
  background: var(--color-light);
  padding: 4rem 0;
}

.cert-intro {
  display: flex;
  gap: 3rem;
  align-items: center;
  margin-bottom: 3rem;
  background: var(--color-white);
  border-radius: var(--radius);
  padding: 2.5rem;
  box-shadow: var(--shadow);
}

.cert-intro-logo {
  flex-shrink: 0;
  width: 160px;
}

.cert-intro-logo img {
  width: 100%;
  height: auto;
}

.cert-intro-text h2 {
  font-size: 1.6rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.cert-intro-text p {
  color: var(--color-text);
  margin-bottom: 0.8rem;
  font-size: 0.95rem;
}

.cert-card {
  background: var(--color-white);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.cert-card-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.5rem 2.5rem;
  background: linear-gradient(135deg, #f0f7f4, #e8f5ee);
  border-bottom: 1px solid rgba(0, 0, 0, 0.06);
}

.cert-card-badge {
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--color-primary-dark);
  letter-spacing: 1px;
}

.cert-card-status {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 600;
  background: #d4edda;
  color: #155724;
}

.cert-card-status::before {
  content: '';
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #28a745;
}

.cert-card-body {
  padding: 2.5rem;
}

.cert-card-body h3 {
  font-size: 1.3rem;
  color: var(--color-dark);
  margin-bottom: 2rem;
  font-family: monospace, var(--font-main);
  letter-spacing: 0.5px;
}

.cert-details-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
  margin-bottom: 2rem;
}

.cert-detail {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
}

.cert-detail-label {
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.5px;
  color: var(--color-text-light);
}

.cert-detail-value {
  font-size: 0.95rem;
  color: var(--color-dark);
  font-weight: 500;
}

.cert-scopes {
  margin-bottom: 2rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.cert-scopes h4,
.cert-materials h4 {
  font-size: 1rem;
  color: var(--color-dark);
  margin-bottom: 1rem;
}

.cert-scope-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.cert-scope-tag {
  padding: 0.4rem 1rem;
  border-radius: 50px;
  font-size: 0.85rem;
  font-weight: 500;
  background: var(--color-light);
  color: var(--color-primary-dark);
  border: 1px solid rgba(45, 106, 79, 0.15);
}

.cert-materials {
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.cert-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

.cert-table th {
  text-align: left;
  padding: 0.8rem 1rem;
  background: var(--color-light);
  color: var(--color-dark);
  font-weight: 600;
  font-size: 0.85rem;
}

.cert-table td {
  padding: 0.8rem 1rem;
  color: var(--color-text);
  border-bottom: 1px solid var(--color-border);
}

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

.cert-card-footer {
  display: flex;
  gap: 1rem;
  padding: 1.5rem 2.5rem;
  background: var(--color-light);
  border-top: 1px solid var(--color-border);
  flex-wrap: wrap;
}

@media (max-width: 768px) {
  .cert-intro {
    flex-direction: column;
    text-align: center;
    gap: 1.5rem;
    padding: 2rem 1.5rem;
  }

  .cert-intro-logo {
    width: 120px;
  }

  .cert-details-grid {
    grid-template-columns: 1fr;
  }

  .cert-card-body {
    padding: 1.5rem;
  }

  .cert-card-header,
  .cert-card-footer {
    padding: 1.2rem 1.5rem;
  }

  .cert-card-footer {
    flex-direction: column;
  }

  .cert-card-footer .btn {
    text-align: center;
  }

  .cert-hero h1 {
    font-size: 2rem;
  }

  .cert-table {
    font-size: 0.8rem;
  }

  .cert-table th,
  .cert-table td {
    padding: 0.6rem 0.5rem;
  }
}

/* === Responsive === */
@media (max-width: 1024px) {
  .hero-content h1 {
    font-size: 2.6rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 768px) {
  .nav-toggle {
    display: flex;
  }

  .nav-links {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background: var(--color-white);
    flex-direction: column;
    padding: 1.5rem 2rem 2rem;
    gap: 0.5rem;
    box-shadow: 0 8px 24px rgba(0, 0, 0, 0.1);
    transform: translateY(-120%);
    transition: transform var(--transition);
  }

  .nav-links a {
    color: var(--color-text);
    font-size: 1.05rem;
    padding: 0.6rem 0;
    display: block;
  }

  .nav-open .nav-links {
    transform: translateY(0);
  }

  .nav-open .nav-toggle span:nth-child(1) {
    transform: rotate(45deg) translate(5px, 5px);
  }
  .nav-open .nav-toggle span:nth-child(2) {
    opacity: 0;
  }
  .nav-open .nav-toggle span:nth-child(3) {
    transform: rotate(-45deg) translate(5px, -5px);
  }

  .hero {
    padding-top: var(--header-height);
  }

  .hero-content h1 {
    font-size: 2rem;
  }

  .hero-content p {
    font-size: 1.05rem;
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }

  .stats-grid {
    grid-template-columns: repeat(2, 1fr);
    gap: 1rem;
  }

  .stat-number {
    font-size: 2rem;
  }

  .section-title {
    font-size: 1.8rem;
  }

  .stats-detailed-grid {
    grid-template-columns: 1fr;
  }

  .stat-detail-number {
    font-size: 2.4rem;
  }

  .stats-page-hero h1 {
    font-size: 2rem;
  }

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

  .gallery-item.gallery-wide {
    aspect-ratio: 16/10;
  }

  .gallery-item-label {
    opacity: 1;
  }

  .footer-inner {
    flex-direction: column;
    gap: 1rem;
    text-align: center;
  }
}

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

  .hero-content h1 {
    font-size: 1.7rem;
  }

  .bar-label {
    width: 50px;
    font-size: 0.75rem;
  }
}