/* ===== VARIABLES & RESET ===== */
:root {
  /* Brand Colors from Asia Cite Visual Identity */
  --brand-dark: #007A3D;
  --brand-light: #00B74F;
  --brand-deep: #004D27;
  --brand-bg-light: #e8f5ee;
  --brand-bg-lighter: #f0faf4;

  --white: #ffffff;
  --gray-50: #f9fafb;
  --gray-100: #f3f4f6;
  --gray-200: #e5e7eb;
  --gray-300: #d1d5db;
  --gray-500: #6b7280;
  --gray-600: #4b5563;
  --gray-700: #374151;
  --gray-800: #1f2937;
  --gray-900: #111827;

  --shadow-sm: 0 1px 2px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.08), 0 2px 4px -2px rgba(0,0,0,0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.08), 0 4px 6px -4px rgba(0,0,0,0.04);
  --shadow-xl: 0 20px 25px -5px rgba(0,0,0,0.08), 0 8px 10px -6px rgba(0,0,0,0.04);

  --radius: 12px;
  --radius-sm: 8px;
  --radius-full: 9999px;
  --transition: all 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
  scroll-padding-top: 80px;
}

body {
  font-family: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  color: var(--gray-800);
  line-height: 1.6;
  background: var(--white);
  overflow-x: hidden;
}

img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; }

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 24px;
}

/* ===== HEADER ===== */
.header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 1000;
  background: transparent;
  transition: var(--transition);
  padding: 16px 0;
}

.header.scrolled {
  background: rgba(255,255,255,0.97);
  backdrop-filter: blur(12px);
  box-shadow: var(--shadow-md);
  padding: 8px 0;
}

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

.logo {
  display: flex;
  align-items: center;
  gap: 8px;
}

.logo-img {
  height: 40px;
  width: auto;
  filter: brightness(0) invert(1);
  transition: var(--transition);
}

.header.scrolled .logo-img {
  filter: none;
}

.nav {
  display: flex;
  align-items: center;
  gap: 4px;
}

.nav-link {
  padding: 8px 16px;
  border-radius: var(--radius-full);
  font-size: 0.9rem;
  font-weight: 500;
  color: rgba(255,255,255,0.85);
  transition: var(--transition);
}

.nav-link:hover {
  background: rgba(255,255,255,0.15);
  color: var(--white);
}

.header.scrolled .nav-link {
  color: var(--gray-700);
}

.header.scrolled .nav-link:hover {
  background: var(--brand-bg-light);
  color: var(--brand-dark);
}

.header-cta {
  padding: 10px 24px !important;
  font-size: 0.9rem !important;
}

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

.mobile-toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background: var(--white);
  transition: var(--transition);
  border-radius: 2px;
}

.header.scrolled .mobile-toggle span {
  background: var(--gray-800);
}

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

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 12px 28px;
  border-radius: var(--radius-full);
  font-size: 0.95rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  border: 2px solid transparent;
  text-align: center;
  font-family: inherit;
}

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

.btn-primary:hover {
  background: var(--brand-deep);
  border-color: var(--brand-deep);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0, 122, 61, 0.3);
}

.btn-outline {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}

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

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

.btn-white:hover {
  background: var(--brand-bg-light);
  transform: translateY(-2px);
  box-shadow: 0 8px 25px rgba(0,0,0,0.15);
}

.btn-outline-white {
  background: transparent;
  color: var(--white);
  border-color: rgba(255,255,255,0.4);
}

.btn-outline-white:hover {
  background: rgba(255,255,255,0.15);
  border-color: rgba(255,255,255,0.6);
  transform: translateY(-2px);
}

.btn-lg {
  padding: 14px 32px;
  font-size: 1rem;
}

.btn-full {
  width: 100%;
}

/* ===== HERO ===== */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}

.hero-bg {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
}

.hero-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(0, 77, 39, 0.85) 0%, rgba(0, 122, 61, 0.75) 50%, rgba(0, 77, 39, 0.8) 100%);
  z-index: 1;
}

.hero-content {
  position: relative;
  z-index: 2;
  text-align: center;
  max-width: 820px;
  padding: 140px 24px 100px;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  background: rgba(255,255,255,0.1);
  border: 1px solid rgba(255,255,255,0.2);
  padding: 8px 20px;
  border-radius: var(--radius-full);
  font-size: 0.85rem;
  color: rgba(255,255,255,0.9);
  font-weight: 500;
  margin-bottom: 28px;
  backdrop-filter: blur(8px);
}

.hero-badge svg {
  opacity: 0.8;
}

.hero-title {
  font-size: clamp(2.2rem, 5vw, 3.5rem);
  font-weight: 800;
  color: var(--white);
  line-height: 1.15;
  margin-bottom: 20px;
  letter-spacing: -0.02em;
}

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

.hero-subtitle {
  font-size: 1.15rem;
  color: rgba(255,255,255,0.8);
  max-width: 640px;
  margin: 0 auto 36px;
  line-height: 1.7;
}

.hero-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
  margin-bottom: 56px;
}

.hero-features {
  display: flex;
  gap: 32px;
  justify-content: center;
  flex-wrap: wrap;
}

.hero-feature {
  display: flex;
  align-items: center;
  gap: 8px;
  color: rgba(255,255,255,0.7);
  font-size: 0.85rem;
  font-weight: 500;
}

.hero-feature svg {
  color: var(--brand-light);
  flex-shrink: 0;
}

/* ===== SECTIONS ===== */
.section {
  padding: 100px 0;
}

.section-header {
  text-align: center;
  max-width: 640px;
  margin: 0 auto 60px;
}

.section-tag {
  display: inline-block;
  background: var(--brand-bg-light);
  color: var(--brand-dark);
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: 0.8rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  margin-bottom: 16px;
}

.section-header h2 {
  font-size: clamp(1.8rem, 3.5vw, 2.5rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 16px;
  letter-spacing: -0.01em;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== SERVICES ===== */
.services {
  background: var(--gray-50);
}

.services-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.service-card {
  background: var(--white);
  padding: 36px 28px;
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

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

.service-icon {
  width: 52px;
  height: 52px;
  background: var(--brand-bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-dark);
  margin-bottom: 20px;
  transition: var(--transition);
}

.service-card:hover .service-icon {
  background: var(--brand-dark);
  color: var(--white);
}

.service-card h3 {
  font-size: 1.15rem;
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 10px;
}

.service-card p {
  font-size: 0.92rem;
  color: var(--gray-500);
  line-height: 1.7;
}

/* ===== ABOUT ===== */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 64px;
  align-items: center;
}

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

.about-img {
  width: 100%;
  aspect-ratio: 4/3;
  object-fit: cover;
  border-radius: var(--radius);
}

.about-accent-box {
  position: absolute;
  bottom: -16px;
  right: -16px;
  background: var(--brand-dark);
  color: var(--white);
  padding: 16px 24px;
  border-radius: var(--radius);
  text-align: center;
  box-shadow: var(--shadow-lg);
}

.accent-label {
  display: block;
  font-size: 1.5rem;
  font-weight: 800;
  line-height: 1;
}

.accent-text {
  font-size: 0.75rem;
  opacity: 0.85;
  font-weight: 500;
}

.about-content .section-tag {
  margin-bottom: 12px;
}

.about-content h2 {
  font-size: clamp(1.5rem, 3vw, 2.2rem);
  font-weight: 800;
  color: var(--gray-900);
  margin-bottom: 20px;
}

.about-content p {
  font-size: 0.95rem;
  color: var(--gray-600);
  line-height: 1.7;
  margin-bottom: 16px;
}

.about-checklist {
  margin-top: 24px;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.about-checklist li {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.92rem;
  font-weight: 500;
  color: var(--gray-700);
}

.about-checklist li svg {
  color: var(--brand-dark);
  flex-shrink: 0;
}

/* ===== WHY CHOOSE US ===== */
.why-us {
  background: linear-gradient(135deg, var(--brand-deep) 0%, var(--brand-dark) 100%);
}

.section-header-light h2 {
  color: var(--white);
}

.section-header-light p {
  color: rgba(255,255,255,0.6);
}

.section-tag-dark {
  background: rgba(255,255,255,0.12);
  color: rgba(255,255,255,0.9);
}

.why-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 24px;
}

.why-card {
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: var(--radius);
  padding: 32px 24px;
  transition: var(--transition);
}

.why-card:hover {
  background: rgba(255,255,255,0.12);
  transform: translateY(-4px);
}

.why-icon {
  color: var(--brand-light);
  margin-bottom: 16px;
}

.why-number {
  font-size: 2.2rem;
  font-weight: 800;
  color: var(--brand-light);
  opacity: 0.4;
  line-height: 1;
  margin-bottom: 12px;
}

.why-card h3 {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 10px;
}

.why-card p {
  font-size: 0.88rem;
  color: rgba(255,255,255,0.6);
  line-height: 1.7;
}

/* ===== SHOWCASE ===== */
.showcase {
  overflow: hidden;
}

.showcase-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 0;
}

.showcase-item {
  overflow: hidden;
}

.showcase-item img {
  width: 100%;
  height: 280px;
  object-fit: cover;
  transition: transform 0.5s ease;
}

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

/* ===== TESTIMONIALS ===== */
.testimonials {
  background: var(--gray-50);
}

.testimonials-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 24px;
}

.testimonial-card {
  background: var(--white);
  border: 1px solid var(--gray-200);
  border-radius: var(--radius);
  padding: 32px;
  transition: var(--transition);
}

.testimonial-card:hover {
  box-shadow: var(--shadow-lg);
  transform: translateY(-2px);
}

.stars {
  display: flex;
  gap: 2px;
  margin-bottom: 16px;
  color: #f59e0b;
}

.testimonial-text {
  font-size: 0.92rem;
  color: var(--gray-600);
  line-height: 1.7;
  font-style: italic;
  margin-bottom: 24px;
}

.testimonial-author {
  display: flex;
  align-items: center;
  gap: 12px;
}

.author-avatar {
  width: 44px;
  height: 44px;
  background: var(--brand-bg-light);
  color: var(--brand-dark);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: 700;
  font-size: 0.85rem;
  flex-shrink: 0;
}

.testimonial-author strong {
  display: block;
  font-size: 0.9rem;
  color: var(--gray-800);
}

.testimonial-author span {
  font-size: 0.8rem;
  color: var(--gray-500);
}

/* ===== CTA BANNER ===== */
.cta-banner {
  background: linear-gradient(135deg, var(--brand-dark) 0%, var(--brand-light) 100%);
  padding: 80px 0;
  text-align: center;
}

.cta-content h2 {
  font-size: clamp(1.6rem, 3.5vw, 2.2rem);
  font-weight: 800;
  color: var(--white);
  margin-bottom: 12px;
}

.cta-content p {
  font-size: 1.05rem;
  color: rgba(255,255,255,0.85);
  margin-bottom: 32px;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.cta-actions {
  display: flex;
  gap: 16px;
  justify-content: center;
  flex-wrap: wrap;
}

/* ===== CONTACT ===== */
.contact-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}

.contact-form {
  background: var(--white);
  padding: 40px;
  border-radius: var(--radius);
  box-shadow: var(--shadow-md);
  border: 1px solid var(--gray-200);
}

.form-row {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 20px;
  margin-bottom: 20px;
}

.form-group {
  margin-bottom: 20px;
}

.form-row .form-group {
  margin-bottom: 0;
}

.form-group label {
  display: block;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--gray-700);
  margin-bottom: 6px;
}

.form-group input,
.form-group select,
.form-group textarea {
  width: 100%;
  padding: 12px 16px;
  border: 1.5px solid var(--gray-200);
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-family: inherit;
  color: var(--gray-800);
  background: var(--white);
  transition: var(--transition);
  outline: none;
}

.form-group input:focus,
.form-group select:focus,
.form-group textarea:focus {
  border-color: var(--brand-dark);
  box-shadow: 0 0 0 3px rgba(0, 122, 61, 0.1);
}

.form-group textarea {
  resize: vertical;
}

.contact-info {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-card {
  display: flex;
  align-items: flex-start;
  gap: 16px;
  padding: 24px;
  background: var(--white);
  border-radius: var(--radius);
  border: 1px solid var(--gray-200);
  transition: var(--transition);
}

.info-card:hover {
  box-shadow: var(--shadow-md);
}

.info-icon {
  width: 44px;
  height: 44px;
  background: var(--brand-bg-light);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--brand-dark);
  flex-shrink: 0;
}

.info-card h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--gray-800);
  margin-bottom: 4px;
}

.info-card p {
  font-size: 0.85rem;
  color: var(--gray-500);
  line-height: 1.6;
}

.info-card a {
  color: var(--brand-dark);
  font-weight: 500;
}

.info-card a:hover {
  text-decoration: underline;
}

/* ===== FOOTER ===== */
.footer {
  background: var(--gray-900);
  padding: 64px 0 0;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1fr;
  gap: 40px;
  padding-bottom: 48px;
  border-bottom: 1px solid rgba(255,255,255,0.08);
}

.footer-brand {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.footer-logo {
  margin-bottom: 4px;
}

.logo-img-light {
  filter: brightness(0) invert(1);
  height: 36px;
}

.footer-brand p {
  font-size: 0.9rem;
  color: rgba(255,255,255,0.5);
  line-height: 1.7;
}

.footer-social {
  display: flex;
  gap: 12px;
}

.footer-social a {
  width: 38px;
  height: 38px;
  background: rgba(255,255,255,0.06);
  border: 1px solid rgba(255,255,255,0.1);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: rgba(255,255,255,0.6);
  transition: var(--transition);
}

.footer-social a:hover {
  background: var(--brand-dark);
  border-color: var(--brand-dark);
  color: var(--white);
}

.footer-links h4 {
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--white);
  margin-bottom: 20px;
}

.footer-links a {
  display: block;
  font-size: 0.85rem;
  color: rgba(255,255,255,0.45);
  transition: var(--transition);
  margin-bottom: 10px;
}

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

.footer-bottom {
  padding: 24px 0;
  text-align: center;
}

.footer-bottom p {
  font-size: 0.8rem;
  color: rgba(255,255,255,0.35);
}

/* ===== ANIMATIONS ===== */
[data-animate] {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-animate].animate-in {
  opacity: 1;
  transform: translateY(0);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 1024px) {
  .services-grid { grid-template-columns: repeat(2, 1fr); }
  .why-grid { grid-template-columns: repeat(2, 1fr); }
  .testimonials-grid { grid-template-columns: repeat(2, 1fr); }
  .about-grid { grid-template-columns: 1fr; gap: 40px; }
  .contact-grid { grid-template-columns: 1fr; }
  .footer-grid { grid-template-columns: 1fr 1fr; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }
}

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

  .nav {
    display: none;
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    background: var(--white);
    flex-direction: column;
    padding: 16px 24px;
    box-shadow: var(--shadow-lg);
    border-radius: 0 0 var(--radius) var(--radius);
    gap: 4px;
  }

  .nav.active {
    display: flex;
  }

  .nav-link {
    color: var(--gray-700);
    padding: 12px 16px;
    width: 100%;
    display: block;
    border-radius: var(--radius-sm);
  }

  .nav-link:hover {
    background: var(--brand-bg-light);
    color: var(--brand-dark);
  }

  .header-cta {
    display: none;
  }

  .hero-content { padding: 120px 20px 60px; }
  .hero-actions { flex-direction: column; align-items: center; }
  .hero-features { gap: 16px; flex-direction: column; align-items: center; }

  .services-grid { grid-template-columns: 1fr; }
  .testimonials-grid { grid-template-columns: 1fr; }
  .why-grid { grid-template-columns: 1fr; }
  .showcase-grid { grid-template-columns: repeat(2, 1fr); }

  .form-row { grid-template-columns: 1fr; }
  .contact-form { padding: 24px; }

  .footer-grid { grid-template-columns: 1fr; gap: 32px; }

  .section { padding: 64px 0; }
  .section-header { margin-bottom: 40px; }

  .about-accent-box {
    bottom: -12px;
    right: -8px;
  }
}

@media (max-width: 480px) {
  .showcase-grid { grid-template-columns: 1fr; }
  .showcase-item img { height: 220px; }
}

/* Standards Section */
.standards { background: #f0faf4; }
.standards-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}
.standard-card {
  background: #fff;
  border-radius: 12px;
  padding: 2rem 1.5rem;
  text-align: center;
  border: 1px solid #e0f0e8;
  transition: transform 0.3s, box-shadow 0.3s;
}
.standard-card:hover {
  transform: translateY(-4px);
  box-shadow: 0 8px 24px rgba(0,122,61,0.1);
}
.standard-card .standard-icon {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  background: #007A3D;
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 0 auto 1rem;
}
.standard-card .standard-icon svg { stroke: #fff; }
.standard-card h3 {
  font-size: 1.05rem;
  font-weight: 600;
  margin-bottom: 0.5rem;
  color: #004D27;
}
.standard-card p {
  font-size: 0.9rem;
  color: #555;
  line-height: 1.5;
}
@media (max-width: 768px) {
  .standards-grid { grid-template-columns: repeat(2, 1fr); }
}
@media (max-width: 480px) {
  .standards-grid { grid-template-columns: 1fr; }
}