/* Global styles and color palette */
:root {
  --bg: #f4f8ff;
  --surface: #ffffff;
  --surface-strong: #e8eef8;
  --text: #10233b;
  --text-muted: #4f6a86;
  --primary: #1b5dcc;
  --primary-dark: #143e8f;
  --accent: #1d7fb8;
  --border: rgba(16, 35, 59, 0.12);
  --shadow: 0 24px 50px rgba(16, 35, 59, 0.1);
  --radius: 24px;
  --radius-sm: 16px;
  --max-width: 1200px;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: Inter, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
}

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

a {
  color: inherit;
  text-decoration: none;
}

button,
input,
textarea {
  font: inherit;
}

button {
  cursor: pointer;
}

.container {
  width: min(100%, 1120px);
  margin: 0 auto;
  padding: 0 24px;
}

.site-header {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(14px);
  border-bottom: 1px solid rgba(16, 35, 59, 0.08);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 24px;
  padding: 18px 0;
}

.brand-link {
  display: flex;
  align-items: center;
  gap: 14px;
}

.brand-logo {
  width: 48px;
  height: 48px;
  object-fit: contain;
  border-radius: 12px;
}

.brand-name {
  display: block;
  font-weight: 700;
  font-size: 1rem;
}

.brand-tagline {
  display: block;
  margin-top: 4px;
  color: var(--text-muted);
  font-size: 0.88rem;
}

.site-nav {
  display: flex;
}

.nav-list {
  display: flex;
  gap: 24px;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-list a {
  color: var(--text-muted);
  font-size: 0.95rem;
  transition: color 0.2s ease;
}

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

.mobile-toggle {
  display: none;
  width: 44px;
  height: 44px;
  border: 1px solid rgba(16, 35, 59, 0.16);
  border-radius: 12px;
  background: var(--surface);
  align-items: center;
  justify-content: center;
  flex-direction: column; /* IMPORTANT */
  gap: 5px; /* spacing between lines */
}

.mobile-toggle span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--text);
  border-radius: 2px;
}

.hero {
  position: relative;
  min-height: 820px;
  display: grid;
  place-items: center;
  padding: 140px 0 120px;
  background-color: #0c1a33;
  background-image: linear-gradient(135deg, rgba(11, 24, 51, 0.92), rgba(19, 63, 138, 0.55)),
    url("office1.jpg");
  background-size: cover;
  background-position: center;
  color: #ffffff;
}

.hero::after {
  content: "";
  position: absolute;
  inset: 0;
  background: radial-gradient(circle at top left, rgba(255, 255, 255, 0.08), transparent 35%),
    linear-gradient(180deg, rgba(12, 26, 52, 0.3), rgba(6, 16, 46, 0.85));
}

.hero::before {
  content: "";
  position: absolute;
  top: 20%;
  left: 8%;
  width: 220px;
  height: 220px;
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.08);
  filter: blur(30px);
}

.hero-content {
  position: relative;
  z-index: 1;
  max-width: 760px;
}

.hero h1 {
  margin: 0;
  font-size: clamp(3rem, 5vw, 5rem);
  line-height: 1.02;
  letter-spacing: -0.04em;
}

.hero-text {
  margin: 32px 0 36px;
  max-width: 680px;
  color: rgba(255, 255, 255, 0.92);
  font-size: 1.12rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 18px;
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 56px;
  padding: 0 30px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 0.98rem;
  letter-spacing: 0.02em;
  text-decoration: none;
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
  border: 1px solid transparent;
  box-shadow: 0 18px 30px rgba(16, 35, 59, 0.12);
}

.button:hover {
  transform: translateY(-1px);
}

.button-primary {
  background: linear-gradient(135deg, var(--primary), var(--accent));
  color: #ffffff;
  border-color: transparent;
}

.button-primary:hover {
  background: linear-gradient(135deg, #154ec6, #1b78c3);
}

.button-secondary {
  background: rgba(255, 255, 255, 0.16);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.28);
}

.button-secondary:hover {
  background: rgba(255, 255, 255, 0.24);
}

.hero-features {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 18px;
  margin-top: 42px;
}

.hero-feature {
  padding: 22px 24px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.16);
  border-radius: 18px;
  backdrop-filter: blur(12px);
}

.hero-feature strong {
  display: block;
  margin-bottom: 10px;
  font-size: 1rem;
  font-weight: 700;
}

.hero-feature p {
  margin: 0;
  font-size: 0.96rem;
  color: rgba(255, 255, 255, 0.76);
}

.section {
  padding: 100px 0;
}

.section-header {
  margin-bottom: 48px;
}

.section-label {
  display: inline-flex;
  margin-bottom: 18px;
  font-size: 0.8rem;
  letter-spacing: 0.3em;
  text-transform: uppercase;
  color: var(--primary);
}

.section h2 {
  margin: 0;
  font-size: clamp(2.1rem, 2.35vw, 3rem);
  line-height: 1.08;
  font-weight: 700;
}

main .section:nth-of-type(even) {
  background: var(--surface-strong);
}

main .section:nth-of-type(even) .container {
  padding-top: 0;
  padding-bottom: 0;
}

.section p {
  color: var(--text-muted);
}

.section-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 32px;
  align-items: start;
}

.about-highlights {
  display: grid;
  gap: 20px;
  padding: 32px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.about-highlights div {
  display: grid;
  gap: 8px;
}

.about-highlights strong {
  color: var(--text);
  font-size: 0.95rem;
}

.about-highlights p {
  margin: 0;
}

.value-grid,
.service-grid,
.capability-grid {
  display: grid;
  gap: 24px;
}

.value-grid {
  grid-template-columns: repeat(auto-fit, minmax(240px, 1fr));
}

.value-card,
.service-card,
.capability-card,
.contact-card,
.feature-panel,
.logistics-card {
  padding: 32px;
  background: var(--surface);
  border: 1px solid rgba(16, 35, 59, 0.08);
  border-radius: var(--radius);
  box-shadow: 0 24px 48px rgba(16, 35, 59, 0.06);
}

.value-card:hover,
.service-card:hover,
.capability-card:hover,
.logistics-card:hover {
  transform: translateY(-4px);
}

.value-card,
.service-card,
.capability-card,
.logistics-card {
  transition: transform 0.3s ease, border-color 0.3s ease, box-shadow 0.3s ease;
}

.service-card {
  position: relative;
  overflow: hidden;
}

.service-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  width: 56px;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--accent));
}

.service-card h3,
.capability-card h3,
.value-card h3,
.contact-card h3,
.feature-panel h3,
.logistics-card span {
  margin: 0 0 16px;
  color: var(--text);
  font-size: 1.05rem;
}

.service-card p,
.capability-card p,
.value-card p,
.logistics-card p {
  margin: 0;
  color: var(--text-muted);
  line-height: 1.8;
}

.value-card h3,
.service-card h3,
.capability-card h3,
.contact-card h3,
.feature-panel h3,
.logistics-card span {
  margin: 0 0 14px;
  color: var(--text);
}

.value-card p,
.service-card p,
.capability-card p,
.logistics-card p {
  margin: 0;
  color: var(--text-muted);
}

.service-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.capability-grid {
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
}

.choose-section {
  background: linear-gradient(180deg, #eef5ff 0%, #ffffff 100%);
}

.reverse-layout {
  grid-template-columns: 1.4fr 1fr;
}

.feature-list {
  margin: 24px 0 0;
  padding-left: 20px;
}

.feature-list li {
  margin-bottom: 14px;
  color: var(--text-muted);
}

.feature-panel {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100%;
}

.feature-panel p {
  margin: 0;
  color: var(--text-muted);
}

.logistics-list {
  margin: 24px 0 0;
  padding-left: 20px;
}

.logistics-list li {
  margin-bottom: 12px;
  color: var(--text-muted);
}

.logistics-visual {
  display: grid;
  gap: 20px;
}

.logistics-card {
  display: grid;
  gap: 16px;
}

.logistics-card span {
  font-size: 0.92rem;
  font-weight: 700;
  color: var(--primary);
}

.logistics-card p {
  margin: 0;
}

.contact-layout {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: 32px;
  align-items: start;
  margin-bottom: 40px;
}

.contact-panel {
  display: grid;
  gap: 24px;
}

.contact-intro {
  margin: 0 0 18px;
  color: var(--text-muted);
  font-size: 1rem;
  line-height: 1.9;
}

/* Fixed contact stats grid */
.contact-stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 16px;
}

.contact-stat {
  padding: 20px;
  background: var(--surface);
  border: 1px solid rgba(16, 35, 59, 0.1);
  border-radius: 16px;
  box-shadow: 0 16px 30px rgba(16, 35, 59, 0.05);
  text-align: left;
}

.contact-stat span {
  display: block;
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--primary);
  margin-bottom: 10px;
  white-space: nowrap;
}

.contact-stat p {
  margin: 0;
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
}

.contact-card {
  display: grid;
  gap: 12px;
  padding: 28px;
  background: var(--surface);
  border: 1px solid rgba(16, 35, 59, 0.08);
  border-radius: var(--radius);
  box-shadow: 0 18px 36px rgba(16, 35, 59, 0.06);
}

.contact-card.highlight {
  background: #f7fbff;
}

.contact-card h3 {
  margin: 0 0 12px;
  font-size: 1.05rem;
}

.contact-card p {
  margin: 0;
  color: var(--text-muted);
}

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

.contact-form-panel {
  display: grid;
  align-items: start;
}

.contact-form-card {
  padding: 36px;
  background: var(--surface);
  border: 1px solid rgba(16, 35, 59, 0.1);
  border-radius: var(--radius);
  box-shadow: 0 24px 50px rgba(16, 35, 59, 0.08);
}

.form-heading {
  margin-bottom: 26px;
}

.form-heading h3 {
  margin: 10px 0 0;
  font-size: 1.55rem;
  line-height: 1.2;
}

.contact-form-card form {
  display: grid;
  gap: 18px;
}

.contact-form-card label {
  display: block;
  font-size: 0.95rem;
  color: var(--text);
  margin-bottom: 8px;
}

.contact-form-card input,
.contact-form-card textarea {
  width: 100%;
  padding: 16px 18px;
  border: 1px solid rgba(16, 35, 59, 0.15);
  border-radius: 16px;
  background: #fbfcff;
  color: var(--text);
  transition: border-color 0.2s ease, box-shadow 0.2s ease;
}

.contact-form-card input:focus,
.contact-form-card textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 4px rgba(27, 93, 204, 0.1);
}

.contact-form-card textarea {
  resize: vertical;
}

.contact-form-card .button-primary {
  width: 100%;
  padding: 18px 24px;
  border-radius: 18px;
  font-size: 1rem;
  letter-spacing: 0.03em;
  background: linear-gradient(135deg, var(--primary), var(--accent));
  box-shadow: 0 18px 30px rgba(27, 93, 204, 0.22);
  border: 1px solid transparent;
  transition: transform 0.25s ease, background 0.25s ease, box-shadow 0.25s ease;
}

.contact-form-card .button-primary:hover {
  transform: translateY(-1px);
  background: linear-gradient(135deg, #154ec6, #1b78c3);
  box-shadow: 0 24px 36px rgba(27, 93, 204, 0.28);
}

.form-note {
  margin: 18px 0 0;
  color: var(--text-muted);
  font-size: 0.95rem;
  line-height: 1.7;
}

.map-panel {
  margin-top: 24px;
}

.map-card {
  min-height: 320px;
  display: grid;
  place-items: center;
  background: linear-gradient(135deg, #edf3ff, #f9fbff);
  border: 1px solid rgba(16, 35, 59, 0.1);
  border-radius: var(--radius);
  color: var(--text-muted);
  box-shadow: 0 24px 50px rgba(16, 35, 59, 0.05);
}

.site-footer {
  background: #0f203d;
  color: rgba(255, 255, 255, 0.9);
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 24px;
  padding: 56px 0 24px;
}

.footer-grid h3,
.footer-grid h4 {
  margin: 0 0 16px;
  color: #ffffff;
}

.footer-grid p,
.footer-grid a,
.footer-grid li {
  color: rgba(255, 255, 255, 0.78);
}

.footer-grid ul {
  list-style: none;
  padding: 0;
  margin: 0;
  display: grid;
  gap: 10px;
}

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

.footer-bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.15);
  padding: 18px 0 32px;
  text-align: center;
  font-size: 0.95rem;
}

.back-to-top {
  position: fixed;
  right: 24px;
  bottom: 24px;
  width: 48px;
  height: 48px;
  border: none;
  border-radius: 50%;
  background: var(--primary);
  color: #ffffff;
  font-size: 1.1rem;
  display: grid;
  place-items: center;
  box-shadow: 0 18px 32px rgba(27, 93, 204, 0.24);
  opacity: 0;
  transform: translateY(12px);
  transition: opacity 0.3s ease, transform 0.3s ease;
  pointer-events: none;
}

.back-to-top.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.reveal {
  opacity: 0;
  transform: translateY(32px);
  transition: opacity 0.7s ease, transform 0.7s ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

@media (max-width: 980px) {
  .section-grid,
  .reverse-layout {
    grid-template-columns: 1fr;
  }

  .hero {
    min-height: 620px;
    padding-top: 100px;
  }

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

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

@media (max-width: 760px) {
  .header-inner {
    flex-wrap: wrap;
    gap: 16px;
  }
  .mobile-toggle {
  display: flex;
  }

  .site-nav {
    width: 100%;
    order: 3;
  }

  .nav-list {
    flex-direction: column;
    gap: 14px;
    padding: 18px 0;
    border-top: 1px solid rgba(16, 35, 59, 0.08);
    display: none;
  }

  .nav-list.open {
    display: flex;
  }

  .mobile-toggle {
    display: inline-flex;
  }

  .hero {
    padding-top: 90px;
  }

  .hero-features {
    grid-template-columns: 1fr;
  }

  .button {
    width: 100%;
  }

  .service-card,
  .capability-card {
    padding: 22px;
  }

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

@media (max-width: 520px) {
  .container {
    padding: 0 18px;
  }

  .hero h1 {
    font-size: 2.4rem;
  }

  .hero-text {
    margin-bottom: 24px;
  }

  .button {
    padding: 14px 20px;
  }

  .about-highlights,
  .feature-panel,
  .contact-form-card,
  .contact-card,
  .logistics-card {
    padding: 24px;
  }

  .contact-stat {
    padding: 18px;
  }

  .contact-stat span {
    font-size: 1rem;
    white-space: normal;
  }
}