/* ============================================================
   HOME PAGE · Hero · About · Stack · Projects · Timeline
   ============================================================ */

/* ----------------------------------------------------------------
   HERO
   ---------------------------------------------------------------- */
.hero {
  position: relative;
  padding-block: clamp(5rem, 14vw, 9rem) clamp(5rem, 10vw, 7rem);
  overflow: hidden;
}

.hero__grid {
  display: grid;
  grid-template-columns: 1.3fr 1fr;
  align-items: center;
  gap: clamp(3rem, 6vw, 5rem);
}

.hero__eyebrow { margin-bottom: var(--s-6); }

.hero__title {
  font-size: clamp(2.5rem, 7vw, 5.25rem);
  font-weight: 600;
  line-height: 1.02;
  letter-spacing: -0.04em;
  color: var(--fg-primary);
  margin-bottom: var(--s-6);
}
.hero__title em {
  font-family: var(--font-serif);
  font-style: italic;
  font-weight: 400;
  color: var(--accent-hover);
}

.hero__desc {
  max-width: 52ch;
  font-size: clamp(1rem, 1.4vw, 1.125rem);
  line-height: var(--leading-relaxed);
  color: var(--fg-secondary);
  margin-bottom: var(--s-8);
}

.hero__actions {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-10);
}

.hero__meta {
  display: flex;
  gap: var(--s-8);
  padding-top: var(--s-6);
  border-top: 1px solid var(--border-subtle);
}
.hero__meta-item { display: flex; flex-direction: column; gap: var(--s-1); }
.hero__meta-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--fg-quaternary);
}
.hero__meta-value {
  font-size: var(--text-sm);
  color: var(--fg-secondary);
}

/* ----- Hero showcase (right column) ----- */
.hero__showcase {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: var(--s-4);
}
.showcase {
  position: relative;
  padding: var(--s-6);
  background:
    linear-gradient(180deg, rgba(99, 102, 241, 0.04), transparent 40%),
    var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-xl);
  overflow: hidden;
}
.showcase::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  padding: 1px;
  background: linear-gradient(180deg, rgba(255,255,255,0.10), transparent 60%);
  -webkit-mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
          mask: linear-gradient(#000 0 0) content-box, linear-gradient(#000 0 0);
  -webkit-mask-composite: xor;
          mask-composite: exclude;
  pointer-events: none;
}
.showcase__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--s-4);
}
.showcase__title {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--fg-tertiary);
}
.showcase__dots { display: flex; gap: 5px; }
.showcase__dots span {
  width: 8px;
  height: 8px;
  border-radius: var(--r-full);
  background: var(--border-strong);
}
.showcase__viz {
  height: 220px;
  border-radius: var(--r-md);
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  padding: var(--s-4);
  position: relative;
  overflow: hidden;
}
.showcase__viz svg { width: 100%; height: 100%; }

.showcase__stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-2);
  margin-top: var(--s-4);
}
.showcase__stat {
  padding: var(--s-3);
  background: var(--bg-base);
  border: 1px solid var(--border-subtle);
  border-radius: var(--r-md);
}
.showcase__stat-value {
  font-family: var(--font-serif);
  font-size: var(--text-2xl);
  line-height: 1;
  color: var(--fg-primary);
  font-weight: 400;
}
.showcase__stat-label {
  margin-top: var(--s-1);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--fg-quaternary);
}

.hero__pills {
  padding: var(--s-4) var(--s-5);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
}
.hero__pills-label {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--fg-tertiary);
}

@media (max-width: 900px) {
  .hero__grid { grid-template-columns: 1fr; }
  .hero__showcase { order: -1; }
  .hero__meta { flex-wrap: wrap; gap: var(--s-4); }
}

/* ----------------------------------------------------------------
   MARQUEE · gentle scrolling tape of skills/keywords
   ---------------------------------------------------------------- */
.marquee {
  position: relative;
  padding-block: var(--s-6);
  border-block: 1px solid var(--border-subtle);
  overflow: hidden;
  background: linear-gradient(180deg, var(--bg-base), var(--bg-elevated));
  -webkit-mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
          mask-image: linear-gradient(90deg, transparent 0, #000 12%, #000 88%, transparent 100%);
}
.marquee__track {
  display: flex;
  gap: var(--s-12);
  animation: marquee 38s linear infinite;
  width: max-content;
}
.marquee__item {
  display: inline-flex;
  align-items: center;
  gap: var(--s-3);
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  letter-spacing: 0.04em;
  color: var(--fg-tertiary);
  white-space: nowrap;
}
.marquee__item::before {
  content: '';
  width: 5px;
  height: 5px;
  border-radius: var(--r-full);
  background: var(--accent);
  opacity: 0.7;
}
@keyframes marquee {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

/* ----------------------------------------------------------------
   ABOUT
   ---------------------------------------------------------------- */
.about__grid {
  display: grid;
  grid-template-columns: 1.2fr 1fr;
  gap: clamp(2.5rem, 5vw, 4.5rem);
  align-items: start;
}
.about__body p {
  font-size: var(--text-lg);
  color: var(--fg-secondary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--s-5);
}
.about__body p:last-child { margin-bottom: 0; }
.about__body strong { color: var(--fg-primary); font-weight: 500; }
.about__quote {
  margin-block: var(--s-8);
  padding: var(--s-2) 0 var(--s-2) var(--s-6);
  border-left: 2px solid var(--accent);
  font-family: var(--font-serif);
  font-size: clamp(1.25rem, 2vw, 1.5rem);
  font-style: italic;
  line-height: var(--leading-snug);
  color: var(--fg-primary);
  letter-spacing: var(--tracking-tight);
}

.about__attrs {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--s-3);
}
.attr {
  padding: var(--s-5);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  transition: border-color var(--dur-base) var(--ease-out-expo);
}
.attr:hover { border-color: var(--border-strong); }
.attr__icon {
  width: 28px;
  height: 28px;
  margin-bottom: var(--s-4);
  color: var(--accent-hover);
}
.attr__title {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--fg-primary);
  margin-bottom: var(--s-1);
  letter-spacing: var(--tracking-normal);
}
.attr__desc {
  font-size: var(--text-sm);
  color: var(--fg-tertiary);
  line-height: var(--leading-snug);
}

@media (max-width: 880px) {
  .about__grid  { grid-template-columns: 1fr; }
  .about__attrs { grid-template-columns: 1fr 1fr; }
}
@media (max-width: 480px) {
  .about__attrs { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------------
   STACK SECTION · capability cards
   ---------------------------------------------------------------- */
.stack {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--s-3);
}
.stack__group {
  padding: var(--s-6);
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  transition: border-color var(--dur-base) var(--ease-out-expo);
}
.stack__group:hover { border-color: var(--border-strong); }
.stack__group-head {
  display: flex;
  align-items: center;
  gap: var(--s-3);
  margin-bottom: var(--s-5);
}
.stack__group-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  background: var(--accent-soft);
  border: 1px solid var(--border-accent);
  border-radius: var(--r-sm);
  color: var(--accent-hover);
}
.stack__group-icon svg { width: 16px; height: 16px; }
.stack__group-title {
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--fg-primary);
  letter-spacing: var(--tracking-normal);
}

@media (max-width: 880px) {
  .stack { grid-template-columns: 1fr; }
}

/* ----------------------------------------------------------------
   PROJECTS GRID
   ---------------------------------------------------------------- */
.projects {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: var(--s-4);
}
.projects__featured { grid-column: span 2; }

.project-card {
  --mx: 50%;
  --my: 50%;
  display: flex;
  flex-direction: column;
  height: 100%;
  background: var(--bg-card);
  border: 1px solid var(--border-default);
  border-radius: var(--r-lg);
  overflow: hidden;
  cursor: pointer;
  text-decoration: none;
  color: inherit;
  transition:
    border-color var(--dur-base) var(--ease-out-expo),
    transform var(--dur-base) var(--ease-out-expo);
  position: relative;
}
.project-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  pointer-events: none;
  background: radial-gradient(
    400px circle at var(--mx) var(--my),
    rgba(99, 102, 241, 0.10),
    transparent 50%
  );
  opacity: 0;
  transition: opacity var(--dur-base) var(--ease-out-expo);
  z-index: 1;
}
.project-card:hover {
  border-color: var(--border-strong);
  transform: translateY(-2px);
}
.project-card:hover::before { opacity: 1; }

.project-card__thumb {
  position: relative;
  aspect-ratio: 16 / 10;
  overflow: hidden;
  background: linear-gradient(135deg, #0d0d12 0%, #16161D 100%);
  border-bottom: 1px solid var(--border-subtle);
}
.project-card__thumb svg {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  transition: transform var(--dur-slow) var(--ease-out-expo);
}
.project-card:hover .project-card__thumb svg { transform: scale(1.04); }

.project-card__thumb-overlay {
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    transparent 0%,
    transparent 60%,
    rgba(8, 8, 11, 0.6) 100%
  );
  pointer-events: none;
}

.project-card__body {
  position: relative;
  z-index: 2;
  padding: var(--s-6) var(--s-6) var(--s-6);
  display: flex;
  flex-direction: column;
  gap: var(--s-3);
  flex: 1;
}
.project-card__meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--s-3);
  margin-bottom: var(--s-1);
}
.project-card__tag {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--accent-hover);
}
.project-card__num {
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  color: var(--fg-quaternary);
}
.project-card__title {
  font-size: var(--text-xl);
  font-weight: 500;
  color: var(--fg-primary);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-snug);
}
.projects__featured .project-card__title {
  font-size: clamp(1.5rem, 2.4vw, 1.875rem);
}
.project-card__desc {
  font-size: var(--text-sm);
  color: var(--fg-tertiary);
  line-height: var(--leading-relaxed);
}
.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--s-2);
  margin-top: auto;
  padding-top: var(--s-3);
}
.project-card__cta {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
  color: var(--fg-secondary);
  margin-top: var(--s-2);
}
.project-card:hover .project-card__cta { color: var(--accent-hover); }
.project-card__cta svg {
  width: 14px;
  height: 14px;
  transition: transform var(--dur-fast) var(--ease-out-expo);
}
.project-card:hover .project-card__cta svg { transform: translateX(3px); }

/* Featured card spans two columns with side-by-side layout */
.projects__featured .project-card {
  display: grid;
  grid-template-columns: 1.05fr 1fr;
  align-items: stretch;
}
.projects__featured .project-card__thumb {
  border-bottom: none;
  border-right: 1px solid var(--border-subtle);
  aspect-ratio: auto;
  min-height: 320px;
}
.projects__featured .project-card__body {
  padding: var(--s-8);
}

@media (max-width: 880px) {
  .projects { grid-template-columns: 1fr; }
  .projects__featured { grid-column: span 1; }
  .projects__featured .project-card { grid-template-columns: 1fr; }
  .projects__featured .project-card__thumb {
    border-right: none;
    border-bottom: 1px solid var(--border-subtle);
    aspect-ratio: 16/10;
    min-height: auto;
  }
  .projects__featured .project-card__body { padding: var(--s-6); }
}

/* ----------------------------------------------------------------
   TIMELINE · formation & experience
   ---------------------------------------------------------------- */
.timeline {
  position: relative;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 7.5rem;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border-subtle);
}
.timeline__item {
  position: relative;
  display: grid;
  grid-template-columns: 7.5rem 1fr;
  gap: var(--s-8);
  padding-block: var(--s-6);
}
.timeline__item + .timeline__item {
  border-top: 1px solid var(--border-subtle);
}
.timeline__item::before {
  content: '';
  position: absolute;
  left: 7.5rem;
  top: 2.2rem;
  width: 9px;
  height: 9px;
  border-radius: var(--r-full);
  background: var(--bg-base);
  border: 2px solid var(--fg-quaternary);
  transform: translateX(-50%);
  transition:
    border-color var(--dur-base) var(--ease-out-expo),
    background-color var(--dur-base) var(--ease-out-expo),
    box-shadow var(--dur-base) var(--ease-out-expo);
}
.timeline__item:hover::before {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 4px var(--accent-soft);
}
.timeline__date {
  font-family: var(--font-mono);
  font-size: var(--text-xs);
  letter-spacing: var(--tracking-wider);
  color: var(--fg-tertiary);
  padding-top: var(--s-2);
}
.timeline__title {
  font-size: var(--text-lg);
  font-weight: 500;
  color: var(--fg-primary);
  margin-bottom: var(--s-2);
  letter-spacing: var(--tracking-normal);
}
.timeline__sub {
  font-size: var(--text-sm);
  color: var(--fg-tertiary);
  line-height: var(--leading-relaxed);
  margin-bottom: var(--s-3);
  max-width: 60ch;
}
.timeline__status {
  display: inline-flex;
  align-items: center;
  gap: var(--s-2);
  font-family: var(--font-mono);
  font-size: 0.6875rem;
  letter-spacing: var(--tracking-wider);
  text-transform: uppercase;
}
.timeline__status--active { color: var(--accent-hover); }
.timeline__status--active::before {
  content: '';
  width: 6px;
  height: 6px;
  border-radius: var(--r-full);
  background: var(--accent);
}
.timeline__status--done { color: var(--success); }
.timeline__status--done::before {
  content: '✓';
  font-family: var(--font-sans);
  font-size: 0.75rem;
}

@media (max-width: 720px) {
  .timeline::before { left: 0.5rem; }
  .timeline__item {
    grid-template-columns: 1fr;
    gap: var(--s-2);
    padding-left: var(--s-6);
  }
  .timeline__item::before {
    left: 0.5rem;
    top: var(--s-8);
  }
  .timeline__date { padding-top: 0; }
}