/* ==========================================================================
   PETRANUSA CORPORATE STYLESHEET
   Brand: PT. Petratama Abdi Nusa
   Tagline: Where Skills Shape Success
   Primary Colors: Emerald Green (#008037), Vibrant Yellow (#FAD02C), Slate/Dark (#0F172A)
   ========================================================================== */

/* --- Google Fonts Import --- */
@import url('https://fonts.googleapis.com/css2?family=Outfit:wght@400;500;600;700;800;900&family=Plus+Jakarta+Sans:wght@300;400;500;600;700;800&display=swap');

:root {
  /* Brand Color Palette */
  --primary-green: #008037;
  --primary-green-dark: #005c28;
  --primary-green-light: #10b981;
  --accent-yellow: #FAD02C;
  --accent-yellow-dark: #d9ab00;
  --accent-yellow-light: #ffeb85;
  
  /* Neutral Color System */
  --bg-dark: #090D16;
  --bg-card-dark: #111827;
  --bg-light: #F8FAFC;
  --bg-card-light: #FFFFFF;
  --text-main: #0F172A;
  --text-muted: #475569;
  --text-white: #F8FAFC;
  --text-white-muted: #94A3B8;
  --border-light: #E2E8F0;
  --border-dark: #1E293B;

  /* Typography */
  --font-heading: 'Outfit', sans-serif;
  --font-body: 'Plus Jakarta Sans', sans-serif;

  /* Shadows & Radius */
  --shadow-sm: 0 2px 4px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 20px rgba(0, 0, 0, 0.08);
  --shadow-lg: 0 10px 30px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 25px rgba(0, 128, 55, 0.25);
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-normal: 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-bounce: 0.5s cubic-bezier(0.68, -0.55, 0.265, 1.55);
}

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

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

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

/* Container */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 1.5rem;
}

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

.text-gradient-green {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-light) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.text-yellow {
  color: var(--accent-yellow);
}

.section-tag {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.4rem 1rem;
  background: rgba(0, 128, 55, 0.08);
  border: 1px solid rgba(0, 128, 55, 0.2);
  border-radius: var(--radius-full);
  color: var(--primary-green);
  font-size: 0.85rem;
  font-weight: 700;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  margin-bottom: 1rem;
}

.section-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 1rem;
}

@media (max-width: 768px) {
  .section-title {
    font-size: 2rem;
  }
}

.section-desc {
  font-size: 1.1rem;
  color: var(--text-muted);
  max-width: 700px;
  margin: 0 auto 3rem auto;
}

/* --- Buttons & CTAs --- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.85rem 1.75rem;
  font-family: var(--font-heading);
  font-size: 1rem;
  font-weight: 700;
  border-radius: var(--radius-full);
  border: none;
  cursor: pointer;
  text-decoration: none;
  transition: var(--transition-normal);
  white-space: nowrap;
}

.btn-primary {
  background: var(--primary-green);
  color: var(--text-white);
  box-shadow: 0 4px 15px rgba(0, 128, 55, 0.3);
}

.btn-primary:hover {
  background: var(--primary-green-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(0, 128, 55, 0.4);
}

.btn-yellow {
  background: var(--accent-yellow);
  color: #1E293B;
  box-shadow: 0 4px 15px rgba(250, 208, 44, 0.4);
}

.btn-yellow:hover {
  background: var(--accent-yellow-dark);
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(250, 208, 44, 0.5);
}

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

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

.btn-outline-white {
  background: transparent;
  color: var(--text-white);
  border: 2px solid rgba(255, 255, 255, 0.3);
}

.btn-outline-white:hover {
  background: rgba(255, 255, 255, 0.15);
  border-color: #FFFFFF;
}

/* --- Header / Navigation --- */
.header {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  z-index: 1000;
  background: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid rgba(226, 232, 240, 0.8);
  transition: var(--transition-normal);
}

.header.scrolled {
  box-shadow: var(--shadow-md);
  background: rgba(255, 255, 255, 0.98);
}

.nav-container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 80px;
}

.brand-logo-img {
  height: 48px;
  width: auto;
  max-width: 220px;
  object-fit: contain;
  display: block;
  transition: var(--transition-fast);
}

.brand-logo-img:hover {
  transform: scale(1.03);
}

.brand-logo-badge {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-family: var(--font-heading);
  font-size: 1.75rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  color: var(--text-main);
  line-height: 1;
}

.brand-accent-line {
  height: 4px;
  width: 100%;
  display: flex;
  border-radius: 2px;
  overflow: hidden;
  margin-top: 3px;
}

.line-yellow {
  background: var(--accent-yellow);
  flex: 1;
}

.line-green {
  background: var(--primary-green);
  flex: 2;
}

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

.nav-link {
  text-decoration: none;
  color: var(--text-main);
  font-weight: 600;
  font-size: 0.95rem;
  transition: var(--transition-fast);
  position: relative;
  padding: 0.5rem 0;
}

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

.nav-link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0%;
  height: 3px;
  background: var(--accent-yellow);
  border-radius: 2px;
  transition: var(--transition-normal);
}

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

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

.mobile-toggle {
  display: none;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-main);
  cursor: pointer;
}

@media (max-width: 1024px) {
  .nav-links {
    position: fixed;
    top: 80px;
    left: -100%;
    width: 100%;
    height: calc(100vh - 80px);
    background: #FFFFFF;
    flex-direction: column;
    padding: 2rem;
    gap: 1.5rem;
    transition: var(--transition-normal);
    box-shadow: var(--shadow-lg);
  }

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

  .mobile-toggle {
    display: block;
  }

  .nav-actions .btn {
    display: none;
  }
}

/* --- Hero Section --- */
.hero {
  position: relative;
  padding-top: 140px;
  padding-bottom: 100px;
  background: radial-gradient(circle at 90% 10%, rgba(250, 208, 44, 0.12) 0%, transparent 40%),
              radial-gradient(circle at 10% 90%, rgba(0, 128, 55, 0.1) 0%, transparent 50%),
              #FFFFFF;
  overflow: hidden;
}

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

@media (max-width: 992px) {
  .hero-grid {
    grid-template-columns: 1fr;
    gap: 3rem;
  }
}

.hero-tagline {
  display: inline-block;
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 800;
  color: var(--primary-green);
  text-transform: uppercase;
  letter-spacing: 0.1em;
  background: rgba(0, 128, 55, 0.08);
  padding: 0.4rem 1.2rem;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
  border: 1px solid rgba(0, 128, 55, 0.18);
}

.hero-headline {
  font-size: 3.5rem;
  font-weight: 900;
  letter-spacing: -0.02em;
  line-height: 1.15;
  margin-bottom: 1.5rem;
}

@media (max-width: 768px) {
  .hero-headline {
    font-size: 2.5rem;
  }
}

.hero-subtext {
  font-size: 1.2rem;
  color: var(--text-muted);
  margin-bottom: 2.5rem;
  line-height: 1.7;
}

.hero-ctas {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
}

.hero-image-wrapper {
  position: relative;
}

.hero-image-card {
  position: relative;
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.15);
  border: 4px solid #FFFFFF;
}

.hero-image-card img {
  width: 100%;
  height: 420px;
  object-fit: cover;
  display: block;
}

.hero-badge-floating {
  position: absolute;
  bottom: -20px;
  left: -20px;
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: 1.25rem 1.75rem;
  border-radius: var(--radius-md);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.3);
  border-left: 5px solid var(--accent-yellow);
  display: flex;
  align-items: center;
  gap: 1rem;
  max-width: 280px;
}

.hero-badge-icon {
  font-size: 2rem;
  color: var(--accent-yellow);
}

.hero-badge-text p {
  font-size: 0.85rem;
  color: var(--text-white-muted);
}

.hero-badge-text strong {
  font-size: 1rem;
  color: var(--text-white);
  display: block;
}

/* --- Section: Accomplishments (Data Slide 1) --- */
.accomplishments {
  background: var(--bg-dark);
  color: #FFFFFF;
  padding: 80px 0;
  position: relative;
  overflow: hidden;
}

.accomplishments::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 5px;
  background: linear-gradient(90deg, var(--accent-yellow) 0%, var(--primary-green) 100%);
}

.accomplishments-header {
  text-align: center;
  margin-bottom: 4rem;
}

.accomplishments-header h2 {
  color: #FFFFFF;
  font-size: 2.75rem;
  letter-spacing: -0.02em;
}

.stats-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2.5rem;
}

@media (max-width: 992px) {
  .stats-grid {
    grid-template-columns: 1fr;
    gap: 2rem;
  }
}

.stat-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.08);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  text-align: center;
  transition: var(--transition-normal);
  position: relative;
  backdrop-filter: blur(10px);
}

.stat-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.06);
  border-color: rgba(250, 208, 44, 0.4);
  box-shadow: 0 15px 35px rgba(0, 0, 0, 0.4);
}

.stat-number {
  font-family: var(--font-heading);
  font-size: 4rem;
  font-weight: 900;
  color: var(--text-white);
  line-height: 1;
  margin-bottom: 1rem;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.2rem;
}

.stat-number span {
  color: var(--accent-yellow);
}

.stat-desc {
  font-size: 0.95rem;
  color: var(--text-white-muted);
  text-transform: uppercase;
  font-weight: 600;
  letter-spacing: 0.05em;
  line-height: 1.5;
}

/* --- Section: About Us (Data Slide 3) --- */
.about {
  padding: 100px 0;
  background: #FFFFFF;
}

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

@media (max-width: 992px) {
  .about-grid {
    grid-template-columns: 1fr;
  }
}

.about-content h2 {
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.about-intro {
  font-size: 1.15rem;
  font-weight: 600;
  color: var(--primary-green);
  margin-bottom: 1.5rem;
}

.about-highlight-box {
  background: linear-gradient(135deg, var(--primary-green) 0%, var(--primary-green-dark) 100%);
  color: #FFFFFF;
  padding: 2.25rem;
  border-radius: var(--radius-md);
  position: relative;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-glow);
}

.about-highlight-box p {
  font-size: 1.1rem;
  font-weight: 500;
  line-height: 1.7;
}

.about-subtext {
  font-size: 1.05rem;
  color: var(--text-muted);
  line-height: 1.7;
}

.about-visual {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.about-card-info {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 2rem;
  border: 1px solid var(--border-light);
}

.about-card-info i {
  font-size: 2.5rem;
  color: var(--primary-green);
  margin-bottom: 1rem;
}

.about-card-info h4 {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.about-card-info p {
  font-size: 0.95rem;
  color: var(--text-muted);
}

/* --- Section: Core Business / Services --- */
.services {
  padding: 100px 0;
  background: var(--bg-light);
}

.services-header {
  text-align: center;
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.75rem;
  margin-top: 3rem;
}

@media (max-width: 1200px) {
  .services-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .services-grid {
    grid-template-columns: 1fr;
  }
}

.service-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 2.25rem 1.75rem;
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 4px;
  background: var(--primary-green);
  transition: var(--transition-normal);
}

.service-card:hover {
  transform: translateY(-10px);
  box-shadow: var(--shadow-lg);
  border-color: rgba(0, 128, 55, 0.3);
}

.service-card:hover::before {
  background: var(--accent-yellow);
  height: 6px;
}

.service-icon {
  width: 60px;
  height: 60px;
  border-radius: var(--radius-sm);
  background: rgba(0, 128, 55, 0.08);
  color: var(--primary-green);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.75rem;
  margin-bottom: 1.5rem;
  transition: var(--transition-normal);
}

.service-card:hover .service-icon {
  background: var(--primary-green);
  color: #FFFFFF;
}

.service-title {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

.service-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  flex-grow: 1;
}

.service-link {
  color: var(--primary-green);
  font-weight: 700;
  font-size: 0.95rem;
  text-decoration: none;
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  transition: var(--transition-fast);
}

.service-link:hover {
  color: var(--primary-green-dark);
  gap: 0.75rem;
}

/* --- Section: Core Values P-A-N (Data Slide 2) --- */
.core-values {
  padding: 100px 0;
  background: var(--bg-dark);
  color: #FFFFFF;
  position: relative;
}

.core-values-header {
  text-align: center;
  margin-bottom: 4rem;
}

.core-values-header h2 {
  color: #FFFFFF;
}

.pan-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .pan-grid {
    grid-template-columns: 1fr;
  }
}

.pan-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  transition: var(--transition-normal);
  position: relative;
}

.pan-card:hover {
  transform: translateY(-8px);
  background: rgba(255, 255, 255, 0.07);
  border-color: var(--accent-yellow);
}

.pan-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: var(--accent-yellow);
  color: #1E293B;
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 900;
  padding: 0.5rem 1.25rem;
  border-radius: var(--radius-sm);
  margin-bottom: 1.5rem;
  box-shadow: 0 4px 12px rgba(250, 208, 44, 0.3);
}

.pan-title {
  font-size: 1.6rem;
  color: #FFFFFF;
  margin-bottom: 1rem;
}

.pan-desc {
  font-size: 0.95rem;
  color: var(--text-white-muted);
  line-height: 1.7;
}

/* --- Section: Our Clients (Data Slide 6) --- */
.clients {
  padding: 80px 0;
  background: #FFFFFF;
}

.clients-header {
  text-align: center;
  margin-bottom: 3rem;
}

.clients-grid {
  display: grid;
  grid-template-columns: repeat(5, 1fr);
  gap: 1.5rem;
  align-items: center;
}

@media (max-width: 1024px) {
  .clients-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (max-width: 640px) {
  .clients-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.client-card {
  background: var(--bg-light);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-sm);
  padding: 1.5rem 1rem;
  text-align: center;
  font-weight: 700;
  font-size: 0.95rem;
  color: var(--text-main);
  transition: var(--transition-normal);
  min-height: 100px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
}

.client-card:hover {
  transform: translateY(-4px);
  border-color: var(--primary-green);
  box-shadow: var(--shadow-md);
  background: #FFFFFF;
}

.client-logo-img {
  width: 100%;
  max-width: 180px;
  height: 50px;
  object-fit: contain;
  filter: grayscale(20%);
  transition: var(--transition-normal);
}

.client-card:hover .client-logo-img {
  filter: grayscale(0%);
  transform: scale(1.05);
}

.client-icon {
  font-size: 1.75rem;
  color: var(--primary-green);
}

/* --- Section: Our Management / BOD (Data Slide 7) --- */
.management {
  padding: 100px 0;
  background: var(--bg-light);
}

.management-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 3rem;
  margin-top: 3rem;
}

@media (max-width: 992px) {
  .management-grid {
    grid-template-columns: 1fr;
  }
}

.bod-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--border-light);
  box-shadow: var(--shadow-sm);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

.bod-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-lg);
}

.bod-image-box {
  width: 100%;
  height: 380px;
  background: linear-gradient(135deg, #F1F5F9 0%, #E2E8F0 100%);
  position: relative;
  overflow: hidden;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  border-bottom: 3px solid var(--primary-green);
}

.bod-image-box img {
  width: 100%;
  height: 100%;
  object-fit: contain;
  object-position: bottom center;
}

.bod-info {
  padding: 2.25rem;
  flex-grow: 1;
}

.bod-role {
  font-size: 0.85rem;
  font-weight: 800;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--primary-green);
  margin-bottom: 0.5rem;
}

.bod-name {
  font-size: 1.6rem;
  margin-bottom: 1rem;
}

.bod-bio {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.7;
}

/* --- Section: Vision & Mission (Data Slide 4) --- */
.vision-mission {
  padding: 100px 0;
  background: #FFFFFF;
}

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

@media (max-width: 992px) {
  .vm-grid {
    grid-template-columns: 1fr;
  }
}

.vm-card {
  border-radius: var(--radius-md);
  padding: 3rem 2.5rem;
  position: relative;
}

.vm-vision {
  background: var(--primary-green);
  color: #FFFFFF;
  box-shadow: var(--shadow-glow);
}

.vm-vision h3 {
  color: #FFFFFF;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.vm-vision p {
  font-size: 1.15rem;
  line-height: 1.8;
}

.vm-mission {
  background: var(--bg-dark);
  color: #FFFFFF;
}

.vm-mission h3 {
  color: #FFFFFF;
  font-size: 2rem;
  margin-bottom: 1.5rem;
}

.vm-mission ul {
  list-style: none;
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.vm-mission li {
  display: flex;
  gap: 1rem;
  font-size: 1.05rem;
  line-height: 1.7;
  color: var(--text-white-muted);
}

.vm-mission li i {
  color: var(--accent-yellow);
  font-size: 1.25rem;
  margin-top: 0.2rem;
}

/* --- Section: Why Us (Data Slide 5) --- */
.why-us {
  padding: 100px 0;
  background: var(--bg-light);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
  margin-top: 3rem;
}

@media (max-width: 992px) {
  .why-grid {
    grid-template-columns: 1fr;
  }
}

.why-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 2.5rem 2rem;
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
}

.why-card:hover {
  transform: translateY(-8px);
  box-shadow: var(--shadow-md);
  border-color: var(--primary-green);
}

.why-card i {
  font-size: 2.5rem;
  color: var(--primary-green);
  margin-bottom: 1.25rem;
}

.why-card h4 {
  font-size: 1.4rem;
  margin-bottom: 1rem;
}

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

/* --- Section: Interactive Course Schedule & Filter --- */
.courses-section {
  padding: 100px 0;
  background: #FFFFFF;
}

.course-filter-bar {
  display: flex;
  justify-content: center;
  gap: 0.75rem;
  flex-wrap: wrap;
  margin-bottom: 2.5rem;
}

.filter-btn {
  padding: 0.6rem 1.4rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  background: #FFFFFF;
  color: var(--text-main);
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition-fast);
}

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

.course-search-box {
  max-width: 500px;
  margin: 0 auto 3rem auto;
  position: relative;
}

.course-search-box input {
  width: 100%;
  padding: 0.85rem 1.25rem 0.85rem 3rem;
  border-radius: var(--radius-full);
  border: 1px solid var(--border-light);
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.course-search-box input:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 4px rgba(0, 128, 55, 0.15);
}

.course-search-box i {
  position: absolute;
  left: 1.25rem;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.courses-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 2rem;
}

@media (max-width: 992px) {
  .courses-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .courses-grid {
    grid-template-columns: 1fr;
  }
}

.course-card {
  background: var(--bg-light);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  border: 1px solid var(--border-light);
  transition: var(--transition-normal);
  display: flex;
  flex-direction: column;
}

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

.course-category {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 800;
  text-transform: uppercase;
  padding: 0.25rem 0.75rem;
  border-radius: var(--radius-sm);
  background: rgba(0, 128, 55, 0.1);
  color: var(--primary-green);
  margin-bottom: 1rem;
  width: fit-content;
}

.course-title {
  font-size: 1.2rem;
  margin-bottom: 0.75rem;
}

.course-details {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin-bottom: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
  flex-grow: 1;
}

/* --- Section: Contact & Addresses (Data Slide 8) --- */
.contact {
  padding: 100px 0;
  background: var(--bg-dark);
  color: #FFFFFF;
}

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

@media (max-width: 992px) {
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

.contact-info h2 {
  color: #FFFFFF;
  font-size: 2.5rem;
  margin-bottom: 1.5rem;
}

.address-block {
  margin-bottom: 2rem;
  padding-bottom: 2rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.1);
}

.address-block h4 {
  color: var(--accent-yellow);
  font-size: 1.1rem;
  margin-bottom: 0.5rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.address-block p {
  color: var(--text-white-muted);
  font-size: 1rem;
  line-height: 1.6;
}

.contact-channels {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.contact-channel-item {
  display: flex;
  align-items: center;
  gap: 1rem;
  color: var(--text-white);
  text-decoration: none;
  font-size: 1.05rem;
  transition: var(--transition-fast);
}

.contact-channel-item:hover {
  color: var(--accent-yellow);
}

.contact-channel-icon {
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: rgba(0, 128, 55, 0.3);
  color: var(--primary-green-light);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.2rem;
}

.contact-form-card {
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  padding: 2.5rem;
  backdrop-filter: blur(10px);
}

.form-group {
  margin-bottom: 1.25rem;
}

.form-group label {
  display: block;
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: var(--text-white-muted);
}

.form-control {
  width: 100%;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  border: 1px solid rgba(255, 255, 255, 0.2);
  background: rgba(0, 0, 0, 0.2);
  color: #FFFFFF;
  font-family: var(--font-body);
  font-size: 1rem;
  outline: none;
  transition: var(--transition-fast);
}

.form-control:focus {
  border-color: var(--primary-green);
  box-shadow: 0 0 0 3px rgba(0, 128, 55, 0.3);
}

/* --- Footer --- */
.footer {
  background: #05080E;
  color: var(--text-white-muted);
  padding: 40px 0;
  border-top: 1px solid rgba(255, 255, 255, 0.05);
  font-size: 0.9rem;
}

.footer-content {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 1rem;
}

/* --- Modal Dialog --- */
.modal-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(8px);
  z-index: 2000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transition: var(--transition-normal);
}

.modal-overlay.active {
  opacity: 1;
  visibility: visible;
}

.modal-card {
  background: #FFFFFF;
  border-radius: var(--radius-md);
  padding: 2.5rem;
  max-width: 550px;
  width: 90%;
  position: relative;
  box-shadow: var(--shadow-lg);
  transform: translateY(20px);
  transition: var(--transition-normal);
}

.modal-overlay.active .modal-card {
  transform: translateY(0);
}

.modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  background: none;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
}