/* ============================================================
   components.css — Section & component styles
   ============================================================
   Table of contents:
     1.  Navbar
     2.  Hero
     3.  About
     4.  Tech Stack
     5.  Experience timeline
     6.  Education timeline
     7.  Projects
     8.  Certifications
     9.  Contact
     10. Footer
     11. Shared UI elements (cards, badges, buttons, tags)
     12. Scroll animations
     13. Responsive overrides
   ============================================================ */


/* ─── 1. Navbar ───────────────────────────────────────────── */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  height: var(--nav-height);
  display: flex;
  align-items: center;
  transition: background var(--transition-normal),
              box-shadow var(--transition-normal);
}

.navbar.scrolled {
  background: rgba(13, 13, 26, 0.92);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  box-shadow: 0 1px 0 var(--color-border);
}

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

.navbar__logo {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  white-space: nowrap;
}

.navbar__links {
  display: flex;
  align-items: center;
  gap: var(--space-6);
}

.navbar__link {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-text-muted);
  letter-spacing: 0.02em;
  transition: color var(--transition-fast);
  position: relative;
  padding-bottom: 2px;
}

.navbar__link::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--gradient-hero);
  border-radius: var(--radius-full);
  transition: width var(--transition-normal);
}

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

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

/* Language toggle */
.lang-toggle {
  display: flex;
  align-items: center;
  gap: var(--space-1);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-2);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  font-family: var(--font-mono);
  letter-spacing: 0.05em;
  transition: border-color var(--transition-fast);
}

.lang-toggle:hover {
  border-color: var(--color-accent);
}

.lang-toggle__option {
  padding: 2px var(--space-2);
  border-radius: var(--radius-full);
  color: var(--color-text-muted);
  transition: background var(--transition-fast), color var(--transition-fast);
}

.lang-toggle__option.active {
  background: var(--gradient-hero);
  color: #fff;
}

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

.navbar__hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--color-text);
  border-radius: var(--radius-full);
  transition: transform var(--transition-normal), opacity var(--transition-normal);
}

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

/* Mobile menu */
.navbar__mobile {
  display: none;
  position: fixed;
  top: var(--nav-height);
  left: 0;
  right: 0;
  background: rgba(13, 13, 26, 0.97);
  backdrop-filter: blur(16px);
  padding: var(--space-6);
  flex-direction: column;
  gap: var(--space-4);
  border-bottom: 1px solid var(--color-border);
  z-index: 99;
}

.navbar__mobile.open {
  display: flex;
}

.navbar__mobile .navbar__link {
  font-size: var(--text-base);
}


/* ─── 2. Hero ─────────────────────────────────────────────── */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
}

/* Ambient background glow */
.hero::before {
  content: '';
  position: absolute;
  top: -20%;
  left: -10%;
  width: 600px;
  height: 600px;
  background: radial-gradient(circle, rgba(99,102,241,0.15) 0%, transparent 70%);
  pointer-events: none;
}

.hero::after {
  content: '';
  position: absolute;
  bottom: -10%;
  right: -5%;
  width: 500px;
  height: 500px;
  background: radial-gradient(circle, rgba(34,211,238,0.1) 0%, transparent 70%);
  pointer-events: none;
}

.hero__inner {
  display: grid;
  grid-template-columns: 1fr auto;
  align-items: center;
  gap: var(--space-16);
  position: relative;
  z-index: 1;
}

.hero__greeting {
  font-family: var(--font-mono);
  font-size: var(--text-lg);
  color: var(--color-accent-cyan);
  margin-bottom: var(--space-3);
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.hero__greeting::before {
  content: '>';
  color: var(--color-accent);
}

.hero__name {
  font-size: clamp(2.5rem, 5vw, var(--text-6xl));
  font-weight: var(--weight-extrabold);
  letter-spacing: -0.03em;
  line-height: 1.1;
  margin-bottom: var(--space-4);
}

.hero__role {
  font-size: var(--text-2xl);
  font-weight: var(--weight-semibold);
  color: var(--color-text-muted);
  margin-bottom: var(--space-4);
}

.hero__tagline {
  font-size: var(--text-base);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
  margin-bottom: var(--space-10);
  max-width: 480px;
  line-height: var(--leading-loose);
}

.hero__actions {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex-wrap: wrap;
}

.hero__socials {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  margin-top: var(--space-8);
}

.hero__social-link {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-muted);
  font-size: var(--text-sm);
  transition: color var(--transition-fast);
}

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

.hero__social-link svg {
  width: 20px;
  height: 20px;
}

/* Avatar */
.hero__avatar-wrap {
  position: relative;
}

.hero__avatar {
  width: 260px;
  height: 260px;
  border-radius: var(--radius-xl);
  object-fit: cover;
  object-position: top;
  border: 2px solid var(--color-border);
  position: relative;
  z-index: 1;
}

/* Glowing frame behind avatar */
.hero__avatar-glow {
  position: absolute;
  inset: -8px;
  border-radius: calc(var(--radius-xl) + 6px);
  background: var(--gradient-hero);
  opacity: 0.25;
  filter: blur(16px);
  z-index: 0;
}

/* Status badge */
.hero__status {
  position: absolute;
  bottom: -12px;
  left: 50%;
  transform: translateX(-50%);
  background: var(--color-bg-secondary);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-xs);
  font-weight: var(--weight-semibold);
  color: var(--color-success);
  white-space: nowrap;
  display: flex;
  align-items: center;
  gap: var(--space-2);
  z-index: 2;
}

.hero__status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0%, 100% { opacity: 1; transform: scale(1); }
  50%       { opacity: 0.6; transform: scale(1.3); }
}


/* ─── 3. About ────────────────────────────────────────────── */
.about__grid {
  display: grid;
  grid-template-columns: 3fr 2fr;
  gap: var(--space-12);
  align-items: start;
}

.about__body {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  white-space: pre-line;
}

.about__highlights {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.highlight-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-5);
  transition: border-color var(--transition-fast);
}

.highlight-card:hover {
  border-color: var(--color-accent);
}

.highlight-card__number {
  font-size: var(--text-3xl);
  font-weight: var(--weight-extrabold);
  background: var(--gradient-hero);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
  line-height: 1;
}

.highlight-card__label {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin-top: var(--space-1);
}

/* Achievements list inside about section */
.achievements-list {
  margin-top: var(--space-10);
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.achievement-item {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

.achievement-item::before {
  content: '▹';
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}


/* ─── 4. Tech Stack ───────────────────────────────────────── */
.stack__grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.stack-category {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.stack-category:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.stack-category__title {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  font-family: var(--font-mono);
  color: var(--color-accent-cyan);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
}

.stack-tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.stack-tag {
  background: rgba(99, 102, 241, 0.1);
  border: 1px solid rgba(99, 102, 241, 0.2);
  border-radius: var(--radius-sm);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  color: var(--color-text);
  font-family: var(--font-mono);
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.stack-tag:hover {
  background: rgba(99, 102, 241, 0.2);
  border-color: var(--color-accent);
}

.stack-tag--highlight {
  background: rgba(34, 211, 238, 0.1);
  border-color: rgba(34, 211, 238, 0.25);
  color: var(--color-accent-cyan);
}


/* ─── 5. Experience timeline ──────────────────────────────── */
.timeline {
  position: relative;
  padding-left: var(--space-8);
}

/* Vertical line */
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: linear-gradient(
    to bottom,
    var(--color-accent) 0%,
    var(--color-accent-cyan) 100%
  );
  border-radius: var(--radius-full);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-12);
}

.timeline__item:last-child {
  margin-bottom: 0;
}

/* Dot on the line */
.timeline__dot {
  position: absolute;
  left: calc(-1 * var(--space-8) - 5px);
  top: 6px;
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background: var(--color-accent);
  border: 2px solid var(--color-bg);
  box-shadow: 0 0 0 2px var(--color-accent);
}

.timeline__header {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-3);
  flex-wrap: wrap;
}

.timeline__company {
  font-size: var(--text-xl);
  font-weight: var(--weight-bold);
  color: var(--color-text);
}

.timeline__role {
  font-size: var(--text-base);
  color: var(--color-accent-cyan);
  font-weight: var(--weight-medium);
  margin-top: 2px;
}

.timeline__meta {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: var(--space-1);
  flex-shrink: 0;
}

.timeline__period {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

.timeline__location {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  display: flex;
  align-items: center;
  gap: 4px;
}

/* Accordion toggle */
.timeline__toggle {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-4);
  padding: var(--space-2) 0;
  transition: color var(--transition-fast);
}

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

.timeline__toggle svg {
  width: 16px;
  height: 16px;
  transition: transform var(--transition-normal);
}

.timeline__toggle[aria-expanded="true"] svg {
  transform: rotate(180deg);
}

/* Bullet list */
.timeline__bullets {
  display: none;
  flex-direction: column;
  gap: var(--space-3);
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.timeline__bullets.open {
  display: flex;
}

.timeline__bullet {
  display: flex;
  align-items: flex-start;
  gap: var(--space-3);
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
}

.timeline__bullet::before {
  content: '▹';
  color: var(--color-accent);
  flex-shrink: 0;
  margin-top: 2px;
}


/* ─── 6. Education timeline ───────────────────────────────── */
.edu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: var(--space-6);
}

.edu-card {
  background: var(--gradient-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  position: relative;
  overflow: hidden;
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.edu-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.edu-card__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent-cyan);
  font-weight: var(--weight-bold);
  letter-spacing: 0.08em;
  margin-bottom: var(--space-3);
}

.edu-card__degree {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
  margin-bottom: var(--space-2);
  line-height: var(--leading-tight);
}

.edu-card__school {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: var(--weight-medium);
  margin-bottom: var(--space-2);
}

.edu-card__location {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

/* Decorative corner accent */
.edu-card::after {
  content: '';
  position: absolute;
  top: 0;
  right: 0;
  width: 60px;
  height: 60px;
  background: var(--gradient-hero);
  opacity: 0.06;
  border-radius: 0 var(--radius-lg) 0 100%;
}


/* ─── 7. Projects ─────────────────────────────────────────── */
.projects__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(300px, 1fr));
  gap: var(--space-6);
}

.project-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
  transition: border-color var(--transition-fast), transform var(--transition-fast),
              box-shadow var(--transition-fast);
}

.project-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-4px);
  box-shadow: var(--shadow-glow);
}

.project-card__top {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.project-card__folder {
  color: var(--color-accent);
}

.project-card__folder svg {
  width: 32px;
  height: 32px;
}

.project-card__links {
  display: flex;
  gap: var(--space-3);
}

.project-card__link {
  color: var(--color-text-muted);
  transition: color var(--transition-fast);
}

.project-card__link:hover {
  color: var(--color-accent-cyan);
}

.project-card__link svg {
  width: 18px;
  height: 18px;
}

.project-card__name {
  font-size: var(--text-lg);
  font-weight: var(--weight-bold);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  line-height: var(--leading-normal);
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
  margin-top: auto;
}

.project-tag {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-accent-cyan);
}


/* ─── 8. Certifications ───────────────────────────────────── */
.certs__grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-6);
  margin-bottom: var(--space-8);
}

.cert-card {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  gap: var(--space-3);
  transition: border-color var(--transition-fast), transform var(--transition-fast);
}

.cert-card:hover {
  border-color: var(--color-accent);
  transform: translateY(-3px);
}

.cert-card__icon {
  width: 56px;
  height: 56px;
  border-radius: var(--radius-md);
  background: var(--gradient-hero);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: white;
}

.cert-card__name {
  font-size: var(--text-base);
  font-weight: var(--weight-bold);
}

.cert-card__issuer {
  font-size: var(--text-sm);
  color: var(--color-accent);
}

.cert-card__year {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  color: var(--color-text-faint);
}

.certs__note {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
  padding: var(--space-4) var(--space-5);
  border-left: 3px solid var(--color-accent);
  background: var(--color-bg-card);
  border-radius: 0 var(--radius-md) var(--radius-md) 0;
}


/* ─── 9. Contact ──────────────────────────────────────────── */
.contact__grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-10);
  align-items: start;
}

.contact__intro {
  font-size: var(--text-lg);
  color: var(--color-text-muted);
  line-height: var(--leading-loose);
  margin-bottom: var(--space-8);
}

.contact__items {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

.contact__item {
  display: flex;
  align-items: center;
  gap: var(--space-4);
}

.contact__item-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-md);
  background: rgba(99, 102, 241, 0.12);
  border: 1px solid rgba(99, 102, 241, 0.2);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.contact__item-icon svg { width: 20px; height: 20px; }

.contact__item-label {
  font-size: var(--text-xs);
  color: var(--color-text-faint);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-weight: var(--weight-semibold);
}

.contact__item-value {
  font-size: var(--text-base);
  color: var(--color-text);
  margin-top: 2px;
}

.contact__item-value a {
  transition: color var(--transition-fast);
}

.contact__item-value a:hover {
  color: var(--color-accent-cyan);
}

.contact__available {
  margin-top: var(--space-6);
  display: flex;
  align-items: center;
  gap: var(--space-2);
  font-size: var(--text-sm);
  color: var(--color-success);
  font-family: var(--font-mono);
}

.contact__available::before {
  content: '';
  display: inline-block;
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--color-success);
  animation: pulse 2s infinite;
}

/* Sidebar info (languages + hobbies) */
.contact__sidebar {
  display: flex;
  flex-direction: column;
  gap: var(--space-6);
}

.info-box {
  background: var(--color-bg-card);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: var(--space-6);
}

.info-box__title {
  font-size: var(--text-xs);
  font-weight: var(--weight-bold);
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-accent-cyan);
  font-family: var(--font-mono);
  margin-bottom: var(--space-4);
}

.lang-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.lang-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.lang-item__name {
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
}

.lang-item__level {
  font-size: var(--text-xs);
  color: var(--color-text-muted);
  font-family: var(--font-mono);
}

.hobbies-list {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-2);
}

.hobby-badge {
  background: rgba(99, 102, 241, 0.08);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-full);
  padding: var(--space-1) var(--space-3);
  font-size: var(--text-xs);
  color: var(--color-text-muted);
}


/* ─── 10. Footer ──────────────────────────────────────────── */
.footer {
  padding-block: var(--space-8);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer__text {
  font-size: var(--text-sm);
  color: var(--color-text-faint);
  font-family: var(--font-mono);
}

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


/* ─── 11. Shared UI elements ──────────────────────────────── */

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  padding: var(--space-3) var(--space-6);
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: var(--weight-semibold);
  letter-spacing: 0.02em;
  transition: all var(--transition-normal);
}

.btn--primary {
  background: var(--gradient-hero);
  color: #fff;
  box-shadow: 0 4px 14px rgba(99, 102, 241, 0.35);
}

.btn--primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 6px 20px rgba(99, 102, 241, 0.5);
}

.btn--ghost {
  background: transparent;
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

.btn--ghost:hover {
  border-color: var(--color-accent);
  color: var(--color-accent);
}

/* Section header layout */
.section-header {
  margin-bottom: var(--space-12);
}


/* ─── 12. Scroll animations ───────────────────────────────── */
.fade-in {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in.visible {
  opacity: 1;
  transform: translateY(0);
}

.fade-in-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.fade-in-left.visible {
  opacity: 1;
  transform: translateX(0);
}

/* Staggered children */
.stagger > * {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.stagger.visible > *:nth-child(1) { transition-delay: 0ms;   opacity: 1; transform: none; }
.stagger.visible > *:nth-child(2) { transition-delay: 80ms;  opacity: 1; transform: none; }
.stagger.visible > *:nth-child(3) { transition-delay: 160ms; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(4) { transition-delay: 240ms; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(5) { transition-delay: 320ms; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(6) { transition-delay: 400ms; opacity: 1; transform: none; }
.stagger.visible > *:nth-child(n+7) { transition-delay: 480ms; opacity: 1; transform: none; }


/* ─── 13. Responsive overrides ────────────────────────────── */
@media (max-width: 1024px) {
  .hero__inner {
    grid-template-columns: 1fr;
    text-align: center;
  }

  .hero__avatar-wrap {
    margin: 0 auto;
  }

  .hero__greeting,
  .hero__actions,
  .hero__socials {
    justify-content: center;
  }

  .about__grid {
    grid-template-columns: 1fr;
  }
}

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

  .hero__avatar { width: 200px; height: 200px; }

  .timeline { padding-left: var(--space-6); }

  .contact__grid { grid-template-columns: 1fr; }

  .timeline__header { flex-direction: column; }
  .timeline__meta { align-items: flex-start; }
}

@media (max-width: 480px) {
  .hero__name { font-size: 2rem; }

  .btn { padding: var(--space-3) var(--space-4); }
}

/* Back to top */
.back-to-top {
  position: fixed;
  bottom: var(--space-8);
  right: var(--space-8);
  background: var(--color-accent);
  color: #fff;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  visibility: hidden;
  transform: translateY(20px);
  transition: all 0.3s ease;
  z-index: 99;
  box-shadow: 0 4px 12px rgba(0,0,0,0.3);
}
.back-to-top.visible {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}
.back-to-top:hover {
  transform: translateY(-3px);
  background: var(--color-text);
}
.back-to-top svg {
  width: 24px;
  height: 24px;
}