/* =========================================
   LAYOUT.CSS — Grid, Sections & Containers
   ========================================= */

/* ---- Container ---- */
.container {
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (max-width: 768px) {
  .container {
    padding: 0 var(--space-3);
  }
}

/* ---- Section Base ---- */
.section {
  position: relative;
  padding: var(--space-16) 0;
  overflow: hidden;
  content-visibility: auto;
  contain-intrinsic-size: 1px 900px;
}

#hero {
  content-visibility: visible;
  contain-intrinsic-size: auto;
}

@media (max-width: 1024px) {
  .section {
    padding: var(--space-12) 0;
  }
}

@media (max-width: 768px) {
  .section {
    padding: var(--space-10) 0;
  }
}

/* ---- Section Header ---- */
.section-header {
  text-align: center;
  margin-bottom: var(--space-8);
}

.section-label {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--accent-1);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-2);
}

.section-label::before,
.section-label::after {
  content: '';
  display: block;
  width: 24px;
  height: 1px;
  background: var(--accent-1);
  opacity: 0.5;
}

.section-title {
  font-size: var(--text-5xl);
  font-family: var(--font-display);
  font-weight: 700;
  margin-bottom: var(--space-2);
  color: var(--text-primary);
}

.section-subtitle {
  font-size: var(--text-lg);
  color: var(--text-muted);
  max-width: 560px;
  margin: 0 auto;
  line-height: 1.7;
}

/* ---- Navbar Layout ---- */
#navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: var(--space-2) 0;
  transition: padding var(--transition-base), background var(--transition-theme);
}

#navbar.scrolled {
  padding: var(--space-1) 0;
}

@media (max-width: 768px) {
  #navbar {
    padding: var(--space-1) 0;
  }

  .navbar__inner {
    height: 60px;
  }
}

.navbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 64px;
  padding: 0 var(--space-4);
  max-width: 1280px;
  margin: 0 auto;
}

@media (max-width: 480px) {
  .navbar__inner {
    padding: 0 var(--space-2);
  }
}

.navbar__logo {
  font-family: var(--font-display);
  font-weight: 700;
  font-size: var(--text-xl);
  background: linear-gradient(135deg, var(--accent-1), var(--accent-2));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  letter-spacing: -0.02em;
  text-decoration: none;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-1);
}

.navbar__links a {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--text-muted);
  padding: 8px 14px;
  border-radius: var(--radius-sm);
  transition: color var(--transition-base), background var(--transition-base);
  position: relative;
}

.navbar__links a:hover,
.navbar__links a.active {
  color: var(--text-primary);
  background: var(--glass-bg);
}

.navbar__links a.active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  left: 50%;
  transform: translateX(-50%);
  width: 4px;
  height: 4px;
  border-radius: 50%;
  background: var(--accent-1);
}

.navbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.navbar__hamburger {
  display: none;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 10px;
  border-radius: var(--radius-sm);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  cursor: pointer;
  transition: background var(--transition-base);
}

.navbar__hamburger span {
  display: block;
  width: 100%;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: transform var(--transition-base), opacity var(--transition-base);
}

.navbar__hamburger.is-active span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}
.navbar__hamburger.is-active span:nth-child(2) {
  opacity: 0;
  transform: translateX(-8px);
}
.navbar__hamburger.is-active span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

@media (max-width: 768px) {
  .navbar__links { display: none; }
  .navbar__hamburger { display: flex; }
}

/* ---- Mobile Nav Menu ---- */
#mobile-nav {
  position: fixed;
  inset: 0;
  z-index: calc(var(--z-modal) + 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  pointer-events: none;
  opacity: 0;
  transform: translateY(-20px);
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  background: rgba(10, 15, 25, 0.85);
  backdrop-filter: blur(30px);
  -webkit-backdrop-filter: blur(30px);
}

#mobile-nav.is-open {
  pointer-events: all;
  opacity: 1;
  transform: translateY(0);
}

.mobile-nav__link {
  font-family: var(--font-display);
  font-size: var(--text-2xl);
  font-weight: 600;
  color: var(--text-primary);
  padding: var(--space-2) var(--space-5);
  border-radius: var(--radius-md);
  border: 1px solid transparent;
  transition: color var(--transition-base), border-color var(--transition-base), background var(--transition-base);
}

.mobile-nav__link:hover {
  color: var(--accent-1);
  border-color: rgba(79, 142, 247, 0.3);
  background: rgba(79, 142, 247, 0.06);
}

/* ---- Hero Layout ---- */
#hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  position: relative;
  overflow: hidden;
  padding-top: calc(var(--nav-height) + 24px);
  scroll-margin-top: calc(var(--nav-height) + 16px);
}

@media (max-width: 768px) {
  #hero {
    padding-top: calc(var(--nav-height) + 20px + env(safe-area-inset-top));
    min-height: 100svh;
    align-items: flex-start;
    padding-bottom: var(--space-10);
  }

  .hero__inner {
    padding-top: var(--space-2);
  }
}

@media (max-width: 480px) {
  #hero {
    padding-top: calc(var(--nav-height) + 24px + env(safe-area-inset-top));
  }

  .hero__inner {
    padding-top: var(--space-1);
  }
}

.hero__canvas {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  z-index: 0;
}

.hero__inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-8);
  align-items: center;
  width: 100%;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .hero__visual {
    display: flex;
    justify-content: center;
  }
}

/* ---- About Layout ---- */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 1024px) {
  .about__grid {
    grid-template-columns: 1fr;
  }
}

.about__counters {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-3);
  margin-top: var(--space-5);
}

@media (max-width: 640px) {
  .about__counters {
    grid-template-columns: 1fr;
  }
}

/* ---- Skills Layout ---- */
.skills__panels {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
  margin-bottom: var(--space-8);
}

@media (max-width: 1024px) {
  .skills__panels {
    grid-template-columns: 1fr 1fr;
  }
}

@media (max-width: 640px) {
  .skills__panels {
    grid-template-columns: 1fr;
  }
}

.skill-badges {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-1);
  margin-top: var(--space-3);
}

.skills__bars {
  max-width: 720px;
  margin: 0 auto;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

/* ---- Projects Layout ---- */
.projects__filters {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-bottom: var(--space-6);
}

.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-4);
}

@media (max-width: 1024px) {
  .projects__grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (max-width: 640px) {
  .projects__grid {
    grid-template-columns: 1fr;
  }
}

/* ---- Timeline Layout ---- */
.timeline {
  position: relative;
  max-width: 900px;
  margin: 0 auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 50%;
  top: 0;
  bottom: 0;
  width: 2px;
  transform: translateX(-50%);
  background: linear-gradient(to bottom, var(--accent-1), var(--accent-2), var(--accent-3));
  border-radius: var(--radius-full);
}

.timeline__item {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: start;
  margin-bottom: var(--space-6);
}

.timeline__item:nth-child(even) .timeline__card {
  grid-column: 3;
}

.timeline__item:nth-child(even) .timeline__spacer {
  grid-column: 1;
  grid-row: 1;
}

.timeline__dot {
  width: 16px;
  height: 16px;
  border-radius: 50%;
  background: var(--accent-1);
  border: 3px solid var(--bg-body);
  box-shadow: 0 0 0 3px rgba(79, 142, 247, 0.3),
              0 0 16px rgba(79, 142, 247, 0.4);
  align-self: start;
  margin-top: var(--space-3);
  flex-shrink: 0;
}

@media (max-width: 768px) {
  .timeline::before {
    left: 20px;
  }
  .timeline__item {
    grid-template-columns: auto 1fr;
    gap: var(--space-3);
  }
  .timeline__item:nth-child(even) .timeline__card {
    grid-column: 2;
  }
  .timeline__spacer { display: none; }
}

/* ---- Testimonials Layout ---- */
.testimonials__track {
  display: flex;
  gap: var(--space-4);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  -webkit-overflow-scrolling: touch;
  padding-bottom: var(--space-2);
  scrollbar-width: none;
}

.testimonials__track::-webkit-scrollbar {
  display: none;
}

.testimonial-card {
  min-width: 360px;
  flex-shrink: 0;
  scroll-snap-align: start;
}

@media (max-width: 480px) {
  .testimonial-card {
    min-width: calc(100vw - var(--space-6));
  }
}

/* ---- Contact Layout ---- */
.contact__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: var(--space-6);
  align-items: start;
}

@media (max-width: 1024px) {
  .contact__grid {
    grid-template-columns: 1fr;
  }
}

#main-content {
  flex: 1;
}

/* ---- Footer Layout ---- */
#footer {
  padding: var(--space-6) 0;
  border-top: 1px solid var(--glass-border);
}

.footer__inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: var(--space-4);
  align-items: center;
  max-width: 1280px;
  margin: 0 auto;
  padding: 0 var(--space-4);
}

.footer__nav {
  display: flex;
  justify-content: center;
  flex-wrap: wrap;
  gap: var(--space-1);
}

.footer__socials {
  display: flex;
  justify-content: flex-end;
  gap: var(--space-2);
}

.footer__copy {
  grid-column: 1 / -1;
  text-align: center;
  margin-top: var(--space-4);
  padding-top: var(--space-4);
  border-top: 1px solid var(--glass-border);
}

@media (max-width: 768px) {
  .footer__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }
  .footer__nav { justify-content: center; }
  .footer__socials { justify-content: center; }
}