/* ============================================================
   sections.css — per-section layout + responsive breakpoints
   ============================================================ */

/* ===================== HERO ===================== */
.hero {
  position: relative;
  min-height: 100svh;
  display: flex;
  align-items: center;
  padding: calc(var(--nav-h) + 3rem) 0 4rem;
  overflow: hidden;
}

/* Decorative background layer */
.hero-bg {
  position: absolute;
  inset: 0;
  z-index: -1;
}

.orb {
  position: absolute;
  width: 480px;
  height: 480px;
  border-radius: 50%;
  filter: blur(110px);
  opacity: 0.32;
  animation: orb-drift 14s ease-in-out infinite alternate;
}

.orb-blue {
  background: #3b5bdb;
  top: -120px;
  right: -80px;
}

.orb-purple {
  background: #7048e8;
  bottom: -160px;
  left: -120px;
  animation-delay: -7s;
}

@keyframes orb-drift {
  from { transform: translate(0, 0) scale(1); }
  to   { transform: translate(-40px, 40px) scale(1.12); }
}

/* Once orbs.js takes over, the CSS keyframe drift hands the
   orbs' transform to the spring physics loop. */
.hero.orbs-live .orb {
  animation: none;
}

/* Faint engineering grid over the hero */
.hero-grid {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(148, 163, 216, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(148, 163, 216, 0.05) 1px, transparent 1px);
  background-size: 56px 56px;
  mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 30%, transparent 75%);
  -webkit-mask-image: radial-gradient(ellipse 90% 70% at 50% 40%, black 30%, transparent 75%);
}

.hero-inner {
  display: grid;
  grid-template-columns: 1.15fr 0.85fr;
  align-items: center;
  gap: 3rem;
}

.hero-eyebrow {
  color: var(--accent);
  margin-bottom: 1rem;
}

.hero-title {
  font-size: clamp(2.4rem, 6vw, 4.2rem);
  font-weight: 700;
  background: linear-gradient(120deg, #f2f5ff 30%, #aab8f5 100%);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  margin-bottom: 0.6rem;
}

.hero-subtitle {
  font-family: var(--font-heading);
  font-size: clamp(1.25rem, 3vw, 1.8rem);
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 1.4rem;
  min-height: 2.4em; /* reserve space so typing effect doesn't shift layout */
}

.typed {
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.typed-cursor {
  color: var(--accent);
  animation: cursor-blink 1s step-end infinite;
}

@keyframes cursor-blink {
  50% { opacity: 0; }
}

.hero-lead {
  max-width: 540px;
  color: var(--text-muted);
  margin-bottom: 2.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.9rem;
  margin-bottom: 2.4rem;
}

.hero-socials {
  display: flex;
  gap: 1.1rem;
}

.hero-socials a {
  display: grid;
  place-items: center;
  width: 42px;
  height: 42px;
  border-radius: 50%;
  color: var(--text-muted);
  border: 1px solid var(--border);
  transition:
    color var(--speed) var(--ease),
    border-color var(--speed) var(--ease),
    transform var(--speed) var(--ease);
}

.hero-socials a:hover {
  color: var(--accent);
  border-color: var(--accent);
  transform: translateY(-3px);
}

/* Mock terminal illustration */
.hero-visual {
  animation: float 6s ease-in-out infinite;
}

@keyframes float {
  0%, 100% { transform: translateY(0); }
  50%      { transform: translateY(-14px); }
}

.terminal {
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: 0 30px 70px rgba(0, 0, 0, 0.5), var(--glow);
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 7px;
  padding: 0.75rem 1rem;
  background: rgba(148, 163, 216, 0.07);
  border-bottom: 1px solid var(--border);
}

.dot {
  width: 11px;
  height: 11px;
  border-radius: 50%;
}

.dot-r { background: #ff5f57; }
.dot-y { background: #febc2e; }
.dot-g { background: #28c840; }

.terminal-title {
  margin-left: 0.6rem;
  font-size: 0.72rem;
  color: var(--text-faint);
}

.terminal-body {
  padding: 1.25rem 1.4rem;
  font-size: 0.8rem;
  line-height: 1.9;
  overflow-x: auto;
}

.t-prompt { color: var(--accent-2); }
.t-cmd    { color: var(--text); }
.t-dim    { color: var(--text-faint); }
.t-ok     { color: var(--ok); }
.t-cursor { color: var(--accent); animation: cursor-blink 1s step-end infinite; }

/* Scroll hint at the bottom of the hero */
.hero-scroll-hint {
  position: absolute;
  left: 50%;
  bottom: 1.6rem;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.3rem;
  color: var(--text-faint);
  font-size: 0.72rem;
  letter-spacing: 0.15em;
  animation: hint-bob 2.2s ease-in-out infinite;
  transition: color var(--speed) var(--ease);
}

.hero-scroll-hint:hover {
  color: var(--accent);
}

@keyframes hint-bob {
  0%, 100% { transform: translate(-50%, 0); }
  50%      { transform: translate(-50%, 7px); }
}

/* ===================== ABOUT ===================== */
.about-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr;
  gap: 3rem;
  align-items: start;
}

.about-text p {
  color: var(--text-muted);
  margin-bottom: 1.2rem;
}

.about-card {
  padding: 1.75rem;
}

.about-card-title {
  font-size: 1.05rem;
  margin-bottom: 1rem;
}

.about-facts {
  display: grid;
  gap: 0.55rem;
  color: var(--text-muted);
  font-size: 0.95rem;
  margin-bottom: 1.5rem;
}

.about-facts li {
  display: flex;
  gap: 0.6rem;
}

.about-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  border-top: 1px solid var(--border);
  padding-top: 1.25rem;
}

.stat {
  display: grid;
  gap: 0.15rem;
  text-align: center;
}

.stat-num {
  font-family: var(--font-heading);
  font-size: 1.5rem;
  font-weight: 700;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.stat-label {
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* ===================== SKILLS ===================== */
.skills-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.skill-category {
  padding: 1.5rem;
}

.skill-category-head {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.25rem;
}

.skill-category-icon {
  display: grid;
  place-items: center;
  width: 40px;
  height: 40px;
  border-radius: 10px;
  color: var(--accent);
  background: rgba(109, 141, 255, 0.1);
  border: 1px solid rgba(109, 141, 255, 0.22);
}

.skill-category-title {
  font-size: 1.05rem;
}

.skill-list {
  display: grid;
  gap: 1rem;
}

.skill-item {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.8rem;
  align-items: center;
}

.skill-item:hover .skill-badge {
  transform: translateY(-3px) scale(1.06);
  box-shadow: 0 6px 18px rgba(109, 141, 255, 0.3);
}

.skill-meta {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 0.35rem;
}

.skill-name {
  font-size: 0.92rem;
  font-weight: 500;
}

/* Long-tail tools per category, shown as a compact chip row */
.skill-extras {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.4rem;
  margin-top: 1.15rem;
  padding-top: 1rem;
  border-top: 1px solid var(--border);
}

.skill-extras-label {
  font-size: 0.7rem;
  color: var(--text-faint);
  letter-spacing: 0.08em;
  margin-right: 0.2rem;
}

.skill-level {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* ===================== PROJECTS ===================== */
.projects-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.6rem;
}

.project-card {
  display: flex;
  flex-direction: column;
  padding: 0;
  overflow: hidden;
}

/* Gradient cover acts as the image placeholder — swap for a real
   <img loading="lazy"> per project when screenshots are ready. */
.project-cover {
  position: relative;
  height: 165px;
  display: grid;
  place-items: center;
  background: var(--cover, linear-gradient(135deg, #1c2a5e, #3b2a6e));
  border-bottom: 1px solid var(--border);
  overflow: hidden;
}

.project-cover::after {
  content: "";
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(rgba(255, 255, 255, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.05) 1px, transparent 1px);
  background-size: 26px 26px;
}

.project-cover svg {
  width: 52px;
  height: 52px;
  color: rgba(240, 244, 255, 0.85);
  z-index: 1;
  transition: transform 0.4s var(--ease);
}

.project-card:hover .project-cover svg {
  transform: scale(1.15) rotate(-4deg);
}

/* Cover artwork (SVG illustrations in assets/covers/) draws its own
   grid, so hide the generic overlay and let the art fill the frame. */
.project-cover.has-image::after {
  display: none;
}

.project-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 0.5s var(--ease);
}

.project-card:hover .project-cover img {
  transform: scale(1.045);
}

.projects-more {
  display: flex;
  justify-content: center;
  margin-top: 2.6rem;
}

.project-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.4rem;
  gap: 0.8rem;
}

.project-title {
  font-size: 1.15rem;
}

.project-desc {
  color: var(--text-muted);
  font-size: 0.92rem;
  flex: 1;
}

.project-tech {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
}

.project-links {
  display: flex;
  gap: 0.75rem;
  padding-top: 0.4rem;
  border-top: 1px solid var(--border);
}

.project-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
  transition: color var(--speed) var(--ease);
}

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

/* ===================== EXPERIENCE ===================== */
.timeline-card {
  padding: 1.4rem 1.6rem;
}

.timeline-role {
  font-size: 1.1rem;
  margin-bottom: 0.15rem;
}

.timeline-company {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
}

.timeline-dates {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
  margin: 0.35rem 0 0.8rem;
}

.timeline-achievements {
  display: grid;
  gap: 0.45rem;
  color: var(--text-muted);
  font-size: 0.92rem;
}

.timeline-achievements li {
  display: flex;
  gap: 0.6rem;
}

.timeline-achievements li::before {
  content: "▸";
  color: var(--accent);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

/* ===================== EDUCATION ===================== */
.education-grid {
  display: grid;
  gap: 1.4rem;
}

.education-card {
  display: grid;
  grid-template-columns: auto 1fr auto;
  gap: 1.25rem;
  align-items: start;
}

.education-icon {
  display: grid;
  place-items: center;
  width: 52px;
  height: 52px;
  border-radius: 12px;
  color: var(--accent-2);
  background: rgba(160, 107, 255, 0.1);
  border: 1px solid rgba(160, 107, 255, 0.25);
}

.education-degree {
  font-size: 1.1rem;
  margin-bottom: 0.15rem;
}

.education-school {
  color: var(--accent);
  font-weight: 600;
  font-size: 0.95rem;
  margin-bottom: 0.5rem;
}

.education-notes {
  display: grid;
  gap: 0.35rem;
  color: var(--text-muted);
  font-size: 0.9rem;
}

.education-notes li {
  display: flex;
  gap: 0.6rem;
}

.education-notes li::before {
  content: "▸";
  color: var(--accent-2);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.education-side {
  text-align: right;
  display: grid;
  gap: 0.4rem;
  justify-items: end;
}

.education-dates {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  color: var(--text-faint);
}

/* ===================== CERTIFICATIONS ===================== */
.certs-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.4rem;
}

.cert-card {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
}

.cert-icon {
  flex-shrink: 0;
  display: grid;
  place-items: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  color: var(--accent);
  background: rgba(109, 141, 255, 0.1);
  border: 1px solid rgba(109, 141, 255, 0.22);
}

.cert-name {
  font-size: 0.98rem;
  margin-bottom: 0.2rem;
}

.cert-issuer {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.cert-year {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* ===================== PUBLICATIONS ===================== */
.pubs-list {
  display: grid;
  gap: 1.4rem;
}

.pub-card {
  border-left: 3px solid var(--accent-2);
}

.pub-title {
  font-size: 1.05rem;
  margin-bottom: 0.35rem;
}

.pub-authors {
  color: var(--text-muted);
  font-size: 0.9rem;
  margin-bottom: 0.35rem;
}

.pub-venue {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--accent-2);
  margin-bottom: 0.6rem;
}

.pub-abstract {
  color: var(--text-muted);
  font-size: 0.9rem;
}

/* ===================== ACHIEVEMENTS ===================== */
.achievements-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.4rem;
}

.achievement-card {
  text-align: center;
  display: grid;
  gap: 0.6rem;
  justify-items: center;
}

.achievement-icon {
  display: grid;
  place-items: center;
  width: 54px;
  height: 54px;
  border-radius: 50%;
  color: var(--accent);
  background: rgba(109, 141, 255, 0.1);
  border: 1px solid rgba(109, 141, 255, 0.22);
  transition: transform 0.35s var(--ease);
}

.achievement-card:hover .achievement-icon {
  transform: translateY(-4px) scale(1.08);
}

.achievement-title {
  font-size: 0.98rem;
}

.achievement-desc {
  color: var(--text-muted);
  font-size: 0.85rem;
}

.achievement-year {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  color: var(--text-faint);
}

/* ===================== CONTACT ===================== */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1.2fr;
  gap: 2.5rem;
  align-items: start;
}

.contact-info {
  display: grid;
  gap: 0.6rem;
}

.contact-line {
  display: flex;
  align-items: center;
  gap: 0.9rem;
  padding: 0.85rem 1rem;
  border-radius: var(--radius-sm);
  color: var(--text-muted);
  border: 1px solid transparent;
  transition:
    color var(--speed) var(--ease),
    border-color var(--speed) var(--ease),
    background var(--speed) var(--ease);
}

.contact-line svg {
  color: var(--accent);
  flex-shrink: 0;
}

a.contact-line:hover {
  color: var(--text);
  background: var(--surface);
  border-color: var(--border);
}

/* ===================== FOOTER ===================== */
.site-footer {
  border-top: 1px solid var(--border);
  padding: 2rem 0;
  /* translucent so the constellation shows through, like .section-alt */
  background: rgba(9, 12, 26, 0.72);
}

.footer-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  flex-wrap: wrap;
}

.footer-copy {
  color: var(--text-faint);
  font-size: 0.85rem;
}

.footer-socials {
  display: flex;
  gap: 1rem;
}

.footer-socials a {
  color: var(--text-faint);
  transition: color var(--speed) var(--ease), transform var(--speed) var(--ease);
}

.footer-socials a:hover {
  color: var(--accent);
  transform: translateY(-2px);
}

/* ============================================================
   RESPONSIVE
   ============================================================ */

/* --- Tablet --- */
@media (max-width: 992px) {
  .hero-inner {
    grid-template-columns: 1fr;
    gap: 3.5rem;
  }

  .hero-visual {
    max-width: 560px;
  }

  .skills-grid,
  .projects-grid,
  .certs-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .achievements-grid {
    grid-template-columns: repeat(2, 1fr);
  }

  .about-grid,
  .contact-grid {
    grid-template-columns: 1fr;
  }
}

/* --- Compact nav: switch to hamburger before links get cramped --- */
@media (max-width: 860px) {
  .nav-toggle {
    display: flex;
  }

  /* Slide-down glass panel menu */
  .nav-menu {
    position: fixed;
    top: var(--nav-h);
    left: 0;
    right: 0;
    flex-direction: column;
    align-items: stretch;
    gap: 0;
    padding: 1rem 1.5rem 1.5rem;
    background: var(--glass-bg);
    backdrop-filter: blur(var(--glass-blur));
    -webkit-backdrop-filter: blur(var(--glass-blur));
    border-bottom: 1px solid var(--border);
    transform: translateY(-12px);
    opacity: 0;
    visibility: hidden;
    transition:
      transform var(--speed) var(--ease),
      opacity var(--speed) var(--ease),
      visibility var(--speed);
  }

  .nav-menu.is-open {
    transform: none;
    opacity: 1;
    visibility: visible;
  }

  .nav-links {
    flex-direction: column;
    gap: 0;
  }

  .nav-link {
    display: block;
    padding: 0.85rem 0;
    font-size: 1.05rem;
  }

  .nav-link::after {
    display: none;
  }

  .nav-resume {
    margin-top: 0.75rem;
  }
}

/* --- Mobile --- */
@media (max-width: 640px) {
  .skills-grid,
  .projects-grid,
  .certs-grid,
  .achievements-grid {
    grid-template-columns: 1fr;
  }

  .hero-actions .btn {
    flex: 1 1 100%;
  }

  .education-card {
    grid-template-columns: auto 1fr;
  }

  .education-side {
    grid-column: 1 / -1;
    justify-items: start;
    text-align: left;
  }

  .footer-inner {
    justify-content: center;
    text-align: center;
  }
}