/* ========================================
   Layout System
   ======================================== */

/* -------- Container -------- */
.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

/* -------- Section Base -------- */
.section {
  padding-top: var(--section-padding-y);
  padding-bottom: var(--section-padding-y);
  position: relative;
  background-color: transparent;
  color: var(--text-inverse);
}

.section-alt {
  background-color: transparent;
  color: var(--text-inverse);
}

.section-dark {
  background-color: transparent;
  color: var(--text-inverse);
}

.section-header {
  text-align: center;
  margin-bottom: var(--space-16);
}

.section-title {
  font-family: var(--font-display);
  font-size: var(--text-4xl);
  font-weight: var(--font-bold);
  color: var(--text-inverse);
  line-height: var(--leading-tight);
  margin-bottom: var(--space-4);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: rgba(255, 255, 255, 0.7);
  max-width: 640px;
  margin: 0 auto;
}

/* -------- Navbar -------- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--navbar-height);
  z-index: var(--z-navbar);
  transition: background-color var(--transition-base), box-shadow var(--transition-base);
}

.navbar--transparent {
  background-color: transparent;
}

.navbar--solid {
  background-color: rgba(10, 25, 41, 0.9);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.3);
}

.navbar__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
  height: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-display);
  font-size: var(--text-xl);
  font-weight: var(--font-bold);
  color: var(--color-white);
  transition: color var(--transition-base);
}

.navbar--solid .navbar__logo {
  color: var(--color-white);
}

.navbar__logo-icon {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--color-white);
  font-size: var(--text-lg);
}

.navbar__menu {
  display: flex;
  align-items: center;
  gap: var(--space-8);
}

.navbar__link {
  font-size: var(--text-base);
  font-weight: var(--font-medium);
  color: rgba(255, 255, 255, 0.85);
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--transition-fast);
}

.navbar--solid .navbar__link {
  color: rgba(255, 255, 255, 0.85);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: linear-gradient(90deg, var(--color-primary), var(--color-secondary));
  transition: width var(--transition-base);
}

.navbar__link:hover {
  color: var(--color-white);
}

.navbar--solid .navbar__link:hover {
  color: var(--color-white);
}

.navbar__link:hover::after {
  width: 100%;
}

/* Mobile menu toggle */
.navbar__toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: var(--space-2);
}

.navbar__toggle span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-white);
  transition: all var(--transition-fast);
}

.navbar--solid .navbar__toggle span {
  background-color: var(--text-primary);
}

/* -------- Footer -------- */
.footer {
  background-color: var(--bg-dark);
  color: rgba(255, 255, 255, 0.6);
  padding-top: var(--space-10);
  padding-bottom: var(--space-8);
}

.footer__container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding-left: var(--container-padding);
  padding-right: var(--container-padding);
}

.footer__top {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: var(--space-10);
  align-items: start;
}

.footer__brand {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  margin-bottom: var(--space-4);
}

.footer__brand-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-md);
  object-fit: contain;
  background: var(--color-white);
}

.footer__brand-name {
  font-family: var(--font-display);
  font-size: var(--text-lg);
  font-weight: var(--font-bold);
  color: var(--color-white);
}

.footer__desc {
  font-size: var(--text-sm);
  line-height: var(--leading-relaxed);
  max-width: 320px;
}

.footer__col-title {
  font-size: var(--text-base);
  font-weight: var(--font-semibold);
  color: var(--color-white);
  margin-bottom: var(--space-5);
}

.footer__link {
  display: block;
  font-size: var(--text-sm);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

.footer__link:hover {
  color: var(--color-white);
}

.footer__bottom {
  border-top: 1px solid rgba(255, 255, 255, 0.1);
  padding-top: var(--space-6);
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: var(--text-sm);
}