/* ============================================
   SECTIONS — Layout for each page section
   ============================================ */

/* ---- Navbar ---- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  z-index: var(--z-sticky);
  transition: all var(--duration-normal) var(--ease-out);
}

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

.navbar--solid {
  background-color: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: var(--shadow-sm);
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 var(--space-6);
}

.navbar__logo {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  font-family: var(--font-heading);
  font-size: var(--fs-xl);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  z-index: 10;
}

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

.navbar__logo-img {
  height: 40px;
  width: auto;
}

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

.navbar__link {
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  letter-spacing: var(--ls-wide);
  color: var(--color-text-muted);
  transition: color var(--duration-fast);
  position: relative;
}

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

.navbar__link:hover,
.navbar__link.active {
  color: var(--color-accent);
}

.navbar--transparent .navbar__link:hover,
.navbar--transparent .navbar__link.active {
  color: var(--color-white);
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -4px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  border-radius: 1px;
  transition: width var(--duration-normal) var(--ease-out);
}

.navbar--transparent .navbar__link::after {
  background-color: var(--color-white);
}

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

/* Hamburger */
.navbar__hamburger {
  display: none;
  flex-direction: column;
  gap: 5px;
  z-index: 10;
  padding: var(--space-2);
}

.navbar__hamburger span {
  display: block;
  width: 24px;
  height: 2px;
  background-color: var(--color-text);
  border-radius: 2px;
  transition: all var(--duration-normal) var(--ease-out);
}

.navbar--transparent .navbar__hamburger span {
  background-color: var(--color-white);
}

.navbar__hamburger.open span:nth-child(1) {
  transform: rotate(45deg) translate(5px, 5px);
}

.navbar__hamburger.open span:nth-child(2) {
  opacity: 0;
}

.navbar__hamburger.open span:nth-child(3) {
  transform: rotate(-45deg) translate(5px, -5px);
}

/* Mobile Menu */
.navbar__mobile-menu {
  display: none;
  position: fixed;
  inset: 0;
  background-color: var(--color-white);
  z-index: var(--z-dropdown);
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-8);
  opacity: 0;
  transition: opacity var(--duration-normal) var(--ease-out);
}

.navbar__mobile-menu.open {
  display: flex;
  opacity: 1;
}

.navbar__mobile-link {
  font-family: var(--font-heading);
  font-size: var(--fs-2xl);
  font-weight: var(--fw-bold);
  color: var(--color-text);
  transition: color var(--duration-fast);
}

.navbar__mobile-link:hover {
  color: var(--color-accent);
}

/* ---- Hero Section ---- */
.hero {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  background: linear-gradient(135deg, #1a1a2e 0%, #16213e 50%, #0f3460 100%);
  overflow: hidden;
}

.hero__bg-pattern {
  position: absolute;
  inset: 0;
  opacity: 0.05;
  background-image:
    radial-gradient(circle at 25% 25%, var(--color-white) 1px, transparent 1px),
    radial-gradient(circle at 75% 75%, var(--color-white) 1px, transparent 1px);
  background-size: 50px 50px;
}

.hero__content {
  position: relative;
  text-align: center;
  z-index: 1;
  padding: var(--space-6);
  max-width: 800px;
}

.hero__label {
  display: inline-block;
  font-family: var(--font-body);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.6);
  margin-bottom: var(--space-6);
}

.hero__title {
  font-size: var(--fs-5xl);
  color: var(--color-white);
  margin-bottom: var(--space-6);
}

.hero__title-accent {
  color: #93C5FD;
}

.hero__subtitle {
  font-size: var(--fs-lg);
  color: rgba(255, 255, 255, 0.7);
  max-width: 550px;
  margin: 0 auto var(--space-10);
  line-height: var(--lh-relaxed);
}

.hero__cta {
  display: flex;
  gap: var(--space-4);
  justify-content: center;
  flex-wrap: wrap;
}

.hero__scroll-hint {
  position: absolute;
  bottom: var(--space-8);
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: rgba(255, 255, 255, 0.4);
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-wider);
  text-transform: uppercase;
  animation: float 2s ease-in-out infinite;
}

.hero__scroll-hint .arrow {
  width: 20px;
  height: 20px;
  border-right: 2px solid rgba(255, 255, 255, 0.4);
  border-bottom: 2px solid rgba(255, 255, 255, 0.4);
  transform: rotate(45deg);
}

@keyframes float {
  0%, 100% { transform: translateX(-50%) translateY(0); }
  50% { transform: translateX(-50%) translateY(8px); }
}

/* ---- About Section ---- */
.about {
  background-color: var(--color-bg);
}

.about__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-16);
  align-items: center;
}

.about__text {
  max-width: 520px;
}

.about__description {
  font-size: var(--fs-md);
  margin-bottom: var(--space-8);
}

.about__stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
}

/* ---- Projects Section ---- */
.projects {
  background-color: var(--color-bg-subtle);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-8);
  max-width: 1000px;
  margin: 0 auto;
}

.projects__empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: var(--space-16);
  color: var(--color-text-muted);
  font-size: var(--fs-md);
}

/* ---- Contact Section ---- */
.contact {
  background-color: var(--color-bg);
}

.contact__grid {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--space-6);
  max-width: 960px;
  margin: 0 auto;
}

.contact__grid > * {
  flex: 0 1 calc(33.333% - var(--space-6));
  min-width: 240px;
}

/* ---- Footer ---- */
.footer {
  background-color: var(--color-text);
  color: rgba(255, 255, 255, 0.6);
  padding: var(--space-12) 0;
}

.footer__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-4);
}

.footer__brand {
  font-family: var(--font-heading);
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--color-white);
}

.footer__copyright {
  font-size: var(--fs-sm);
}

.footer__links {
  display: flex;
  gap: var(--space-6);
}

.footer__link {
  font-size: var(--fs-sm);
  color: rgba(255, 255, 255, 0.6);
  transition: color var(--duration-fast);
}

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