/* ============================================================
   SECTIONS — Per-section layout rules
   ============================================================ */

/* ── NAVBAR ─────────────────────────────────────────────── */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: var(--z-nav);
  padding: 1.25rem var(--container-pad);
  display: flex;
  align-items: center;
  justify-content: space-between;
  transition: background var(--transition-normal), border-color var(--transition-normal), padding var(--transition-normal);
  background: transparent;
  border-bottom: 1px solid transparent;
}

.site-nav.scrolled {
  background: var(--bg-elevated);
  border-bottom-color: var(--border-color);
  padding-top: 0.85rem;
  padding-bottom: 0.85rem;
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
}

.nav-brand {
  font-size: 1.4rem;
  font-weight: 800;
  font-family: var(--font-heading);
  color: var(--text-primary) !important;
  letter-spacing: -0.03em;
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-brand span {
  color: var(--accent-1);
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
}

.nav-links a {
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  padding: 0.4rem 0.75rem;
  border-radius: var(--radius-pill);
  transition: all var(--transition-fast);
  text-decoration: none;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--text-primary);
  background: var(--border-color);
}

.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

/* Mobile hamburger */
.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  width: 28px;
  cursor: pointer;
  padding: 4px;
}

.nav-toggle span {
  display: block;
  height: 2px;
  background: var(--text-primary);
  border-radius: 2px;
  transition: all var(--transition-fast);
}

.nav-toggle.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle.open span:nth-child(2) { opacity: 0; transform: scaleX(0); }
.nav-toggle.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile menu overlay */
.nav-mobile {
  position: fixed;
  inset: 0;
  background: var(--bg-base);
  z-index: calc(var(--z-nav) - 1);
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  opacity: 0;
  visibility: hidden;
  transition: opacity var(--transition-normal), visibility var(--transition-normal);
}

.nav-mobile.open {
  opacity: 1;
  visibility: visible;
}

.nav-mobile a {
  font-size: 1.75rem;
  font-weight: 700;
  color: var(--text-primary);
  text-decoration: none;
  transition: color var(--transition-fast);
  font-family: var(--font-heading);
}

.nav-mobile a:hover { color: var(--accent-1); }

@media (max-width: 900px) {
  .nav-links { display: none; }
  .nav-toggle { display: flex; }
}

/* ── HERO ───────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: grid;
  grid-template-columns: 55% 45%;
  position: relative;
  overflow: hidden;
}

.hero__left {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: calc(var(--space-xl) + 5rem) var(--space-xl) var(--space-xl) max(var(--container-pad), calc((100vw - var(--container-max)) / 2 + var(--container-pad)));
  position: relative;
  z-index: 2;
}

/* SVG grid pattern behind hero text */
.hero__grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--border-color) 1px, transparent 1px),
    linear-gradient(90deg, var(--border-color) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(ellipse at 30% 50%, black 20%, transparent 70%);
  -webkit-mask-image: radial-gradient(ellipse at 30% 50%, black 20%, transparent 70%);
  pointer-events: none;
}

.hero__tag {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 700;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: var(--accent-1);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.hero__tag::before {
  content: '';
  width: 2rem;
  height: 2px;
  background: var(--accent-1);
}

.hero__title {
  font-size: clamp(3rem, 6vw, 5.5rem);
  font-weight: 800;
  line-height: 1.05;
  color: var(--text-primary);
  margin-bottom: var(--space-md);
  letter-spacing: -0.03em;
}

.hero__title .typed-cursor {
  color: var(--accent-1);
}

.hero__subtitle {
  font-size: 1.1rem;
  color: var(--text-secondary);
  margin-bottom: var(--space-lg);
  max-width: 480px;
  line-height: 1.6;
}

/* Right side — photo */
.hero__right {
  position: relative;
  overflow: hidden;
}

.hero__photo {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center top;
  clip-path: polygon(12% 0, 100% 0, 100% 100%, 0 100%);
  transition: clip-path 0.5s ease;
}

.hero__photo::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    135deg,
    rgba(255, 189, 57, 0.08) 0%,
    transparent 50%,
    rgba(0, 245, 160, 0.05) 100%
  );
}

/* Scroll indicator */
.hero__scroll {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-top: var(--space-lg);
  color: var(--text-muted);
  font-size: 0.8rem;
  font-family: var(--font-mono);
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.hero__scroll-line {
  width: 3rem;
  height: 1px;
  background: var(--accent-1);
  animation: scroll-pulse 2s ease-in-out infinite;
}

@keyframes scroll-pulse {
  0%, 100% { width: 3rem; opacity: 1; }
  50% { width: 1.5rem; opacity: 0.5; }
}

@media (max-width: 768px) {
  .hero {
    grid-template-columns: 1fr;
    grid-template-rows: auto 40vh;
  }

  .hero__left {
    padding: calc(var(--space-xl) + 4rem) var(--container-pad) var(--space-md);
  }

  .hero__photo {
    clip-path: polygon(0 8%, 100% 0, 100% 100%, 0% 100%);
  }

  .hero__title { font-size: clamp(2.2rem, 9vw, 3.5rem); }
}

/* ── ABOUT ──────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: var(--space-xl);
  align-items: center;
}

.about__img-wrap {
  position: relative;
}

.about__img {
  width: 100%;
  border-radius: var(--radius-lg);
  object-fit: cover;
  aspect-ratio: 4/5;
}

/* Decorative offset border */
.about__img-wrap::after {
  content: '';
  position: absolute;
  inset: -12px;
  border: 2px solid var(--accent-1);
  border-radius: calc(var(--radius-lg) + 8px);
  z-index: -1;
  opacity: 0.4;
}

.about__content { position: relative; }

.about__text {
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

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

.about__stat {
  background: var(--bg-surface);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: var(--space-sm);
  text-align: center;
}

.about__stat-num {
  font-size: 2.5rem;
  font-weight: 800;
  color: var(--accent-1);
  font-family: var(--font-heading);
  line-height: 1;
}

.about__stat-label {
  font-size: 0.8rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-top: 0.25rem;
}

@media (max-width: 768px) {
  .about__grid {
    grid-template-columns: 1fr;
    gap: var(--space-lg);
  }
  .about__img { aspect-ratio: 16/9; }
  .about__img-wrap::after { display: none; }
}

/* ── RESUME / TIMELINE ──────────────────────────────────── */
.timeline {
  position: relative;
  max-width: 800px;
  margin-inline: auto;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 1.5rem;
  top: 0;
  bottom: 0;
  width: 2px;
  background: linear-gradient(to bottom, var(--accent-1), transparent);
}

.timeline-item {
  position: relative;
  padding-left: 4.5rem;
  margin-bottom: var(--space-md);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: calc(1.5rem - 5px);
  top: 1.5rem;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--accent-1);
  border: 2px solid var(--bg-base);
  box-shadow: 0 0 0 3px rgba(255, 189, 57, 0.2);
}

.timeline-card {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-left: 3px solid var(--accent-1);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
  padding: var(--space-md);
  transition: box-shadow var(--transition-normal), border-left-color var(--transition-normal);
}

.timeline-card:hover {
  box-shadow: var(--shadow);
  border-left-color: var(--accent-2);
}

.timeline-card__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-sm);
  margin-bottom: 0.5rem;
  flex-wrap: wrap;
}

.timeline-card__company {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--text-primary);
}

.timeline-card__date {
  font-size: 0.75rem;
  font-family: var(--font-mono);
  color: var(--accent-1);
  white-space: nowrap;
  padding: 0.2rem 0.6rem;
  border: 1px solid rgba(255, 189, 57, 0.3);
  border-radius: var(--radius-pill);
}

.timeline-card__role {
  font-size: 0.85rem;
  font-family: var(--font-mono);
  color: var(--accent-3);
  margin-bottom: 0.75rem;
}

.timeline-card__desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.7;
  margin: 0;
}

.timeline-divider {
  text-align: center;
  margin: var(--space-lg) 0 var(--space-md);
  padding-left: 4.5rem;
}

.timeline-divider span {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.15em;
  position: relative;
  padding: 0 1rem;
}

.timeline-divider span::before,
.timeline-divider span::after {
  content: '';
  position: absolute;
  top: 50%;
  width: 3rem;
  height: 1px;
  background: var(--border-color);
}

.timeline-divider span::before { right: 100%; }
.timeline-divider span::after  { left: 100%; }

.resume__download {
  text-align: center;
  margin-top: var(--space-lg);
  padding-left: 4.5rem;
}

/* ── SKILLS ─────────────────────────────────────────────── */
.skills__grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--space-md) var(--space-xl);
  max-width: 900px;
  margin-inline: auto;
}

@media (max-width: 600px) {
  .skills__grid { grid-template-columns: 1fr; }
}

/* ── PROJECTS ───────────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  padding-bottom: var(--space-md); /* room for stagger offset */
}

@media (max-width: 992px) {
  .projects__grid { grid-template-columns: repeat(2, 1fr); }
  .project-card:nth-child(3n+2) { transform: none; }
}

@media (max-width: 576px) {
  .projects__grid { grid-template-columns: 1fr; }
}

/* ── VIDEO ──────────────────────────────────────────────── */
.video-section {
  background: var(--bg-surface);
  position: relative;
  overflow: hidden;
}

/* diagonal stripe accent */
.video-section::before {
  content: '';
  position: absolute;
  top: 0;
  left: -5%;
  width: 110%;
  height: 8px;
  background: linear-gradient(90deg, var(--accent-1), var(--accent-2), var(--accent-3));
}

.video-section__inner {
  display: grid;
  grid-template-columns: 1fr 2fr;
  gap: var(--space-xl);
  align-items: center;
}

.video-section__label {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--accent-1);
  margin-bottom: var(--space-sm);
}

.video-section__year {
  font-size: clamp(5rem, 10vw, 8rem);
  font-weight: 800;
  color: var(--text-primary);
  opacity: 0.08;
  line-height: 0.9;
  letter-spacing: -0.05em;
  position: absolute;
  top: var(--space-md);
  left: var(--container-pad);
  pointer-events: none;
}

.video-embed {
  border-radius: var(--radius-lg);
  overflow: hidden;
  aspect-ratio: 16/9;
  box-shadow: var(--shadow-lg);
}

.video-embed iframe {
  width: 100%;
  height: 100%;
  border: 0;
  display: block;
}

@media (max-width: 768px) {
  .video-section__inner { grid-template-columns: 1fr; }
}

/* ── CTA BANNER ─────────────────────────────────────────── */
.cta-banner {
  position: relative;
  padding: var(--space-xl);
  text-align: center;
  background-attachment: fixed;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

.cta-banner::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(135deg, rgba(10,10,10,0.88) 0%, rgba(10,10,10,0.70) 100%);
}

.cta-banner__inner {
  position: relative;
  z-index: 1;
  max-width: 600px;
  margin-inline: auto;
}

.cta-banner__title {
  font-size: clamp(2rem, 4vw, 3rem);
  font-weight: 800;
  color: #fff;
  margin-bottom: var(--space-sm);
}

.cta-banner__title strong { color: var(--accent-1); }

.cta-banner__text {
  color: rgba(255,255,255,0.7);
  margin-bottom: var(--space-md);
}

/* ── CONTACT ────────────────────────────────────────────── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1.4fr;
  gap: var(--space-xl);
  align-items: start;
}

@media (max-width: 768px) {
  .contact__grid { grid-template-columns: 1fr; }
}

/* ── FOOTER ─────────────────────────────────────────────── */
.site-footer {
  background: var(--bg-surface);
  border-top: 1px solid var(--border-color);
  padding-top: var(--space-xl);
}

.footer__grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr 1.5fr;
  gap: var(--space-lg);
  padding-bottom: var(--space-xl);
}

@media (max-width: 992px) {
  .footer__grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 576px) {
  .footer__grid { grid-template-columns: 1fr; }
}

.footer__brand {
  font-size: 1.4rem;
  font-weight: 800;
  margin-bottom: var(--space-sm);
  font-family: var(--font-heading);
  letter-spacing: -0.03em;
}

.footer__brand span { color: var(--accent-1); }

.footer__desc {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
  margin-bottom: var(--space-md);
}

.footer__col-title {
  font-size: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.15em;
  text-transform: uppercase;
  color: var(--text-primary);
  margin-bottom: var(--space-sm);
}

.footer__links {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer__links a {
  font-size: 0.9rem;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition-fast);
}

.footer__links a:hover { color: var(--accent-1); }

.footer__contact-line {
  display: flex;
  align-items: flex-start;
  gap: 0.6rem;
  margin-bottom: 0.6rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.footer__contact-line i {
  color: var(--accent-1);
  margin-top: 0.15rem;
  font-size: 0.8rem;
  flex-shrink: 0;
}

.footer__contact-line a {
  color: var(--text-muted);
}

.footer__contact-line a:hover { color: var(--accent-1); }

.footer__bottom {
  border-top: 1px solid var(--border-color);
  padding: var(--space-md) 0;
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-sm);
}

.footer__copy {
  font-size: 0.85rem;
  color: var(--text-muted);
  margin: 0;
}

.footer__copy a {
  color: var(--accent-1);
  font-weight: 600;
}