/* ============================================================
   LAYOUT.CSS — Grid Systems, Containers, Page Sections
   ============================================================ */

.container {
  width: 100%;
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-padding);
}
.container--narrow { max-width: 800px; }
.container--wide { max-width: 1400px; }

/* Sections */
.section { padding: var(--space-20) 0; }
.section--sm { padding: var(--space-12) 0; }
.section--lg { padding: var(--space-24) 0; }
.section--dark {
  background-color: var(--color-navy);
  color: var(--color-text-inverse);
}
.section--dark h2, .section--dark h3, .section--dark h4 { color: var(--color-white); }
.section--dark p { color: var(--color-text-muted); }
.section--alt { background-color: var(--color-surface-alt); }
.section--gradient {
  background: linear-gradient(180deg, var(--color-navy) 0%, var(--color-navy-light) 100%);
  color: var(--color-text-inverse);
}

.section-header { text-align: center; margin-bottom: var(--space-16); }
.section-header h2 { margin-bottom: var(--space-4); }
.section-header p {
  max-width: 600px;
  margin: 0 auto;
  font-size: var(--font-size-lg);
}

/* Grids */
.grid { display: grid; gap: var(--space-8); }
.grid--2 { grid-template-columns: repeat(2, 1fr); }
.grid--3 { grid-template-columns: repeat(3, 1fr); }
.grid--4 { grid-template-columns: repeat(4, 1fr); }
.grid--auto { grid-template-columns: repeat(auto-fit, minmax(300px, 1fr)); }

/* Flex */
.flex { display: flex; }
.flex--center { display: flex; align-items: center; justify-content: center; }
.flex--between { display: flex; align-items: center; justify-content: space-between; }
.flex--column { display: flex; flex-direction: column; }
.flex--gap-sm { gap: var(--space-3); }
.flex--gap { gap: var(--space-6); }
.flex--gap-lg { gap: var(--space-8); }

/* Hero */
.hero {
  position: relative;
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  overflow: hidden;
}
.hero__bg {
  position: absolute;
  inset: 0;
  z-index: 0;
}
.hero__bg img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}
.hero__overlay {
  position: absolute;
  inset: 0;
  background: var(--gradient-hero);
  z-index: 1;
}
.hero__overlay::after {
  content: '';
  position: absolute;
  bottom: 0; left: 0; right: 0;
  height: 200px;
  background: var(--gradient-hero-bottom);
}
.hero__content {
  position: relative;
  z-index: 2;
  text-align: center;
  padding: var(--space-8);
  max-width: 900px;
}

/* Page Header */
.page-header {
  background: var(--gradient-navy);
  padding: var(--space-24) 0 var(--space-16);
  text-align: center;
  position: relative;
  overflow: hidden;
}
.page-header::before {
  content: '';
  position: absolute;
  top: -50%; left: -20%;
  width: 60%; height: 200%;
  background: radial-gradient(circle, rgba(13,148,136,0.08) 0%, transparent 70%);
  pointer-events: none;
}
.page-header::after {
  content: '';
  position: absolute;
  bottom: -50%; right: -20%;
  width: 60%; height: 200%;
  background: radial-gradient(circle, rgba(249,115,22,0.06) 0%, transparent 70%);
  pointer-events: none;
}
.page-header h1 {
  color: var(--color-white);
  margin-bottom: var(--space-4);
  font-size: var(--font-size-5xl);
}
.page-header p {
  color: var(--color-text-muted);
  font-size: var(--font-size-lg);
  max-width: 600px;
  margin: 0 auto;
}

/* Footer */
.footer {
  background-color: var(--color-navy);
  color: var(--color-text-inverse);
  padding: var(--space-16) 0 var(--space-8);
}
.footer__grid {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr 1fr;
  gap: var(--space-10);
  margin-bottom: var(--space-12);
}
.footer__brand h3 { color: var(--color-white); font-size: var(--font-size-2xl); margin-bottom: var(--space-4); }
.footer__brand p { color: var(--color-text-muted); font-size: var(--font-size-sm); line-height: var(--line-height-relaxed); }
.footer__col h4 {
  color: var(--color-white);
  font-size: var(--font-size-sm);
  text-transform: uppercase;
  letter-spacing: var(--letter-spacing-wider);
  margin-bottom: var(--space-6);
}
.footer__col a {
  display: block;
  color: var(--color-text-muted);
  font-size: var(--font-size-sm);
  padding: var(--space-2) 0;
  transition: color var(--transition-fast), padding-left var(--transition-fast);
}
.footer__col a:hover { color: var(--color-teal-light); padding-left: var(--space-2); }
.footer__bottom {
  border-top: 1px solid var(--color-navy-mid);
  padding-top: var(--space-8);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}
.footer__bottom p { color: var(--color-text-muted); font-size: var(--font-size-sm); }
.footer__socials { display: flex; gap: var(--space-4); }
.footer__socials a {
  width: 40px; height: 40px;
  display: flex; align-items: center; justify-content: center;
  border-radius: var(--radius-full);
  background: var(--color-navy-mid);
  color: var(--color-text-muted);
  transition: all var(--transition-base);
  font-size: var(--font-size-lg);
}
.footer__socials a:hover {
  background: var(--color-teal);
  color: var(--color-white);
  transform: translateY(-2px);
}

/* Responsive */
@media (max-width: 1024px) {
  .grid--3, .grid--4 { grid-template-columns: repeat(2, 1fr); }
  .footer__grid { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 768px) {
  .section { padding: var(--space-12) 0; }
  .grid--2, .grid--3, .grid--4 { grid-template-columns: 1fr; }
  .footer__grid { grid-template-columns: 1fr; gap: var(--space-8); }
  .footer__bottom { flex-direction: column; text-align: center; }
  .hero { min-height: 90vh; }
  .page-header { padding: var(--space-16) 0 var(--space-10); }
  .page-header h1 { font-size: var(--font-size-4xl); }
  h1 { font-size: var(--font-size-4xl); }
  h2 { font-size: var(--font-size-3xl); }
}
@media (max-width: 480px) {
  :root { --container-padding: var(--space-4); }
  .hero__content { padding: var(--space-4); }
}