/* RESET */

* {
  box-sizing: border-box;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background-color: #232833;   /* Grey background */
  color: #ffffff;
  line-height: 1.7;
}

/* CONTAINER */

.container {
  max-width: 1140px;
  margin: 0 auto;
  padding: 0 24px;
}

/* HEADER */

.site-header {
  background: #232833;
  border-bottom: 1px solid #32394a;
  position: sticky;
  top: 0;
  z-index: 100;
}

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

.logo img {
  height: 52px;
}

/* NAVIGATION */

.nav a {
  color: #ffffff;
  text-decoration: none;
  margin-left: 28px;
  font-size: 0.95rem;
  font-weight: 500;
  transition: opacity 0.2s ease;
}

.nav a:hover {
  opacity: 0.7;
}

/* HERO */

.hero {
  padding: 140px 0 120px;
  text-align: center;
}

.hero h1 {
  font-size: 3rem;
  margin-bottom: 24px;
}

.hero-subtitle {
  max-width: 720px;
  margin: 0 auto 48px;
  color: #d0d5e1;
  font-size: 1.15rem;
}

.hero-cta {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
}

/* BUTTONS */

.btn {
  display: inline-block;
  padding: 14px 30px;
  border-radius: 8px;
  text-decoration: none;
  font-weight: 600;
  transition: 0.2s ease;
  margin: 0 8px;
}

.btn.primary {
  background: #2b8fd6;
  color: #ffffff;
}

.btn.primary:hover {
  background: #227bb9;
}

.btn.secondary {
  background: #ffffff;
  color: #000000;
}

.btn.secondary:hover {
  background: #e6e6e6;
}

/* SPLIT SECTIONS */

.split-section {
  padding: 120px 0;
}

.split-section.alt {
  background: #2c3240;
}

.split {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: center;
}

/* Reverse layout for alternating sections */

.split.reverse {
  direction: rtl;
}

.split.reverse .text {
  direction: ltr;
}

/* TEXT COLUMN */

.split .text {
  max-width: 520px;
  margin: 0 auto;
  text-align: center;   /* Centered within column */
}

.split .text h2 {
  margin-bottom: 18px;
  font-size: 1.9rem;
}

.split .text p {
  color: #c9cfdb;
  font-size: 1rem;
}

/* IMAGE COLUMN */

.split .image {
  display: flex;
  justify-content: center;
}

.split img {
  max-width: 520px;
  width: 100%;
  height: auto;
  border-radius: 12px;
  box-shadow: 0 25px 50px rgba(0,0,0,0.35);
}

/* DIFFERENCE SECTION */

.difference {
  padding: 120px 0;
  background: #2c3240;
  text-align: center;
}

.difference h2 {
  margin-bottom: 50px;
}

.pillars {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));
  gap: 40px;
}

.pillar {
  max-width: 340px;
  margin: 0 auto;
}

.pillar h3 {
  margin-bottom: 14px;
}

.pillar p {
  color: #c9cfdb;
}

/* CTA SECTION */

.cta-section {
  padding: 120px 0;
  text-align: center;
}

.cta-section p {
  color: #c9cfdb;
}

/* FOOTER */

.site-footer {
  background: #202633;
  padding: 70px 0;
  border-top: 1px solid #32394a;
  color: #9ea5b5;
}

.footer-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 40px;
}

.site-footer h4 {
  color: #9ea5b5;
  font-weight: 600;
  margin-bottom: 12px;
}

.site-footer a {
  display: block;
  color: #9ea5b5;
  text-decoration: none;
  margin-bottom: 8px;
}

.site-footer a:hover {
  color: #ffffff;
}

.footer-operator {
  font-size: 0.78rem;
  color: #6b7385;
  margin-top: 8px;
}

.operator-notice {
  font-size: 0.9rem;
  color: #9ea5b5;
  margin-bottom: 24px;
  font-style: italic;
}

.copyright {
  text-align: center;
  margin-top: 50px;
  font-size: 0.85rem;
  color: #7d8596;
}

/* MOBILE RESPONSIVE */

@media (max-width: 900px) {

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

  .split.reverse {
    direction: ltr;
  }

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

  .split .text {
    text-align: center;
  }

  .split img {
    max-width: 100%;
  }

  .nav {
    display: none;   /* optional: hide nav on small screens for now */
  }
}

.video-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 32px;
}

.video-card {
  background: #ffffff;
  border-radius: 8px;
  padding: 20px;
  box-shadow: 0 4px 12px rgba(0,0,0,0.05);
}

.video-card h3 {
  color: #232833;
}

.video-card p {
  color: #6b7385;
}

.video-wrapper {
  position: relative;
  padding-bottom: 56.25%; /* 16:9 */
  height: 0;
  overflow: hidden;
  border-radius: 6px;
  margin-bottom: 16px;
}

.video-wrapper iframe {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  border: 0;
}

@media (max-width: 900px) {
  .video-grid {
    grid-template-columns: 1fr;
  }
}