/* ============================================================
   animations.css — Modern motion system (all pages)
   Taste: CSS keyframes + IntersectionObserver only.
   No window.scroll listener. prefers-reduced-motion respected.
   ============================================================ */

:root {
  --ease-expo:  cubic-bezier(0.16, 1, 0.3, 1);
  --ease-quint: cubic-bezier(0.22, 1, 0.36, 1);
  --ease-io:    cubic-bezier(0.65, 0, 0.35, 1);
  --accent:      #2563eb;
  --ink:         #0d0d0d;
  --body:        #444;
  --muted:       #666;
  --muted-light: #999;
  /* letter-spacing scale */
  --ls-tight:   0.5px;
  --ls-default: 1px;
  --ls-wide:    2px;
}

/* ---- Smooth scroll ---------------------------------------- */
html { scroll-behavior: smooth; }

/* ---- Page entrance (CSS, no JS dependency) ---------------- */
@keyframes pageFadeIn {
  from { opacity: 0; }
  to   { opacity: 1; }
}
body { animation: pageFadeIn 0.45s ease both; }

/* ---- Line-reveal (hero text) ------------------------------ */
.line-reveal {
  display: block;
  overflow: hidden;
  line-height: 1.05;
}
.line-reveal > * {
  display: block;
  animation: lineSlideUp 1s var(--ease-expo) both;
}
.line-reveal--d1 > * { animation-delay: 0.12s; }
.line-reveal--d2 > * { animation-delay: 0.26s; }
.line-reveal--d3 > * { animation-delay: 0.44s; }
.line-reveal--d4 > * { animation-delay: 0.60s; }

@keyframes lineSlideUp {
  from { transform: translateY(110%); opacity: 0; }
  to   { transform: translateY(0);   opacity: 1; }
}

/* ---- Hero ------------------------------------------------- */
.hero-full-wrapper { position: relative; }

/* dot-grid overlay (pure CSS, no scroll listener) */
.hero-full-container {
  position: relative;
  overflow: hidden;
}
.hero-full-container::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.065) 1px, transparent 1px);
  background-size: 38px 38px;
  animation: gridDrift 55s linear infinite;
  pointer-events: none;
  z-index: 3; /* above carousel + overlay */
}
.hero-full-container .container { position: relative; z-index: 4; }

/* ---- Hero Carousel ---------------------------------------- */
.hero-carousel {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
}

/* Dark gradient overlay — ensures text readability on any image */
.hero-carousel::before {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(
    160deg,
    rgba(0,0,0,.62) 0%,
    rgba(0,0,0,.35) 55%,
    rgba(0,0,0,.65) 100%
  );
  z-index: 2;
  pointer-events: none;
}

.hero-slide {
  position: absolute;
  inset: 0;
  background-size: cover;
  background-position: center;
  opacity: 0;
  transition: opacity 1.5s ease;
  will-change: opacity;
  z-index: 1;
}
.hero-slide.is-active { opacity: 1; }

/* Dot indicators */
.hero-dots {
  position: absolute;
  bottom: 80px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 5;
  display: flex;
  gap: 9px;
  align-items: center;
}
.hero-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: rgba(255,255,255,.28);
  border: 1.5px solid rgba(255,255,255,.45);
  padding: 0;
  cursor: pointer;
  transition: background .25s ease, transform .25s ease, border-color .25s ease;
}
.hero-dot:hover  { background: rgba(255,255,255,.65); }
.hero-dot.is-active {
  background: #fff;
  border-color: #fff;
  transform: scale(1.35);
}
.hero-dot:focus-visible { outline: 2px solid var(--accent); outline-offset: 3px; }

@media (prefers-reduced-motion: reduce) {
  .hero-slide { transition: none !important; }
}

@keyframes gridDrift {
  from { background-position: 0 0; }
  to   { background-position: 38px 38px; }
}

/* Hero name */
.hero-name {
  font-family: "Roboto Mono", monospace;
  font-weight: 700;
  font-size: clamp(40px, 6.5vw, 78px);
  letter-spacing: -0.025em;
  color: #fff;
  margin: 0;
  line-height: 1.0;
  text-shadow: 0 2px 30px rgba(0,0,0,.45);
}

/* Hero role */
.hero-role {
  font-family: "Roboto Mono", monospace;
  font-size: clamp(12px, 1.6vw, 16px);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255,255,255,.6);
  margin: 18px 0 0;
}

/* Hero CTA row */
.hero-actions {
  display: flex;
  gap: 14px;
  flex-wrap: wrap;
  margin-top: 36px;
}
.hero-btn {
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: var(--ls-default);
  text-transform: uppercase;
  padding: 14px 28px;
  border-radius: 3px;
  text-decoration: none;
  min-height: 48px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  transition: transform .15s ease, box-shadow .15s ease, border-color .15s ease, color .15s ease;
}
.hero-btn:hover { transform: translateY(-2px); text-decoration: none; }
.hero-btn--solid {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 4px 22px rgba(37,99,235,.42);
}
.hero-btn--solid:hover { box-shadow: 0 8px 36px rgba(37,99,235,.58); color: #fff; }
.hero-btn--ghost {
  border: 1px solid rgba(255,255,255,.38);
  color: rgba(255,255,255,.8);
}
.hero-btn--ghost:hover { border-color: rgba(255,255,255,.8); color: #fff; }

/* ---- Scroll indicator ------------------------------------- */
.scroll-indicator {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 3;
  cursor: pointer;
  opacity: 0;
  animation: lineSlideUp .6s var(--ease-expo) .75s both;
}
.scroll-indicator__mouse {
  width: 22px;
  height: 36px;
  border: 1.5px solid rgba(255,255,255,.4);
  border-radius: 11px;
  display: flex;
  justify-content: center;
  align-items: flex-start;
  padding-top: 6px;
}
.scroll-indicator__mouse::after {
  content: '';
  width: 3px;
  height: 7px;
  background: rgba(255,255,255,.65);
  border-radius: 2px;
  animation: scrollBounce 2.3s ease infinite;
}
@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); opacity: 1; }
  55%       { transform: translateY(10px); opacity: .15; }
}

/* ---- Nav: frosted glass when hero leaves viewport --------- */
.navbar {
  transition: background .3s ease, backdrop-filter .3s ease, box-shadow .3s ease;
}
.navbar--scrolled {
  background: rgba(10,10,10,.9) !important;
  backdrop-filter: blur(16px) !important;
  -webkit-backdrop-filter: blur(16px) !important;
  box-shadow: 0 1px 0 rgba(255,255,255,.06) !important;
}

/* ---- Stagger reveal variants for about/sections ----------- */
.reveal-left {
  opacity: 0;
  transform: translateX(-24px);
  transition: opacity .6s ease, transform .6s var(--ease-expo);
}
.reveal-left.is-visible { opacity: 1; transform: none; }

.reveal-right {
  opacity: 0;
  transform: translateX(24px);
  transition: opacity .6s ease, transform .6s var(--ease-expo);
}
.reveal-right.is-visible { opacity: 1; transform: none; }

/* Timeline items stagger */
.timeline-item { --ti: 0; }
.timeline-item.reveal {
  transition-delay: calc(var(--ti) * 90ms);
}

/* ============================================================
   ABOUT PAGE
   ============================================================ */

/* Mini-hero */
.about-hero {
  min-height: 38vh;
  display: flex;
  align-items: flex-end;
  padding: 110px 0 56px;
  background: #0a0a0a;
  position: relative;
  overflow: hidden;
}
.about-hero::after {
  content: '';
  position: absolute;
  inset: 0;
  background-image: radial-gradient(rgba(255,255,255,.05) 1px, transparent 1px);
  background-size: 34px 34px;
  animation: gridDrift 55s linear infinite;
  pointer-events: none;
}
.about-hero .container { position: relative; z-index: 2; }

.about-eyebrow {
  font-family: "Roboto Mono", monospace;
  font-size: 11px;
  letter-spacing: var(--ls-wide);
  text-transform: uppercase;
  color: var(--accent);
  display: block;
  margin-bottom: 18px;
}
.about-hero-name {
  font-family: "Roboto Mono", monospace;
  font-weight: 700;
  font-size: clamp(40px, 6.5vw, 78px);
  color: #fff;
  margin: 0 0 14px;
  line-height: 1.0;
  letter-spacing: -0.025em;
  text-wrap: balance;
}
.about-hero-role {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: clamp(14px, 1.8vw, 17px);
  color: rgba(255,255,255,.48);
  margin: 0;
  letter-spacing: .02em;
}

/* Bio grid */
.about-bio {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 60px;
  align-items: start;
  max-width: 1100px;
  margin: 0 auto;
  padding: 72px 24px;
}
.about-bio__text p {
  font-family: system-ui, -apple-system, sans-serif;
  font-size: 15px;
  line-height: 1.78;
  color: var(--body);
  margin: 0 0 14px;
  max-width: 56ch;
}
.about-bio__text a { color: var(--accent); }
.about-bio__text strong { color: var(--ink); }

.about-bio__photo img {
  width: 100%;
  aspect-ratio: 3/4;
  object-fit: cover;
  object-position: center top;
  border-radius: 3px;
  display: block;
  filter: grayscale(15%);
  transition: filter .35s ease, transform .35s ease;
}
.about-bio__photo img:hover {
  filter: none;
  transform: scale(1.01);
}

@media (max-width: 768px) {
  .about-bio { grid-template-columns: 1fr; gap: 36px; }
  .about-bio__photo { order: -1; }
  .about-bio__photo img { aspect-ratio: 4/3; }
}

/* Content sections */
.about-section {
  max-width: 1100px;
  margin: 0 auto;
  padding: 0 24px 72px;
}
.about-section-title {
  font-family: "Roboto Mono", monospace;
  font-weight: 700;
  font-size: 20px;
  margin: 0 0 36px;
  color: var(--ink);
  text-wrap: balance;
  padding-bottom: 16px;
  border-bottom: 1px solid #e2e2e2;
  position: relative;
}
.about-section-title::after {
  content: '';
  position: absolute;
  bottom: -1px;
  left: 0;
  height: 2px;
  width: 36px;
  background: var(--accent);
}

/* Timeline */
.timeline {
  position: relative;
  padding-left: 30px;
}
.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 10px;
  bottom: 0;
  width: 1px;
  background: linear-gradient(to bottom, var(--accent) 0%, #e8e8e8 80%, transparent 100%);
}
.timeline-item {
  position: relative;
  padding-bottom: 40px;
}
.timeline-item:last-child { padding-bottom: 0; }
.timeline-item::before {
  content: '';
  position: absolute;
  left: -33px;
  top: 6px;
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 3px rgba(37,99,235,.14);
  transition: box-shadow .2s ease, transform .2s ease;
}
.timeline-item:hover::before {
  box-shadow: 0 0 0 5px rgba(37,99,235,.2);
  transform: scale(1.25);
}
.timeline-period {
  font-family: "Roboto Mono", monospace;
  font-size: 10px;
  letter-spacing: var(--ls-default);
  text-transform: uppercase;
  color: var(--accent);
  margin: 0 0 5px;
}
.timeline-role {
  font-family: "Roboto Mono", monospace;
  font-weight: 700;
  font-size: 15px;
  color: var(--ink);
  margin: 0 0 3px;
}
.timeline-place {
  font-family: system-ui, sans-serif;
  font-size: 13px;
  color: var(--muted-light);
  margin: 0 0 8px;
}
.timeline-desc {
  font-family: system-ui, sans-serif;
  font-size: 14px;
  line-height: 1.7;
  color: var(--muted);
  margin: 0;
  max-width: 55ch;
}

/* Skills */
.skills-grid {
  display: flex;
  flex-wrap: wrap;
  gap: 9px;
}
.skill-chip {
  font-family: "Roboto Mono", monospace;
  font-size: 12px;
  color: var(--ink);
  border: 1px solid #d4d4d4;
  border-radius: 4px;
  padding: 8px 14px;
  cursor: default;
  transition: border-color .18s ease, color .18s ease, background .18s ease;
}
.skill-chip:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(37,99,235,.04);
}
.skill-chip--featured {
  border-color: var(--accent);
  color: var(--accent);
  background: rgba(37,99,235,.05);
}

/* ============================================================
   SKILLS MARQUEE BAND
   ============================================================ */
.skills-marquee {
  background: #0c0c0e;
  padding: 0;
  overflow: hidden;
  position: relative;
  border-bottom: 1px solid rgba(255,255,255,.06);
}

/* Edge fade — hides start/end for seamless illusion */
.skills-marquee::before,
.skills-marquee::after {
  content: '';
  position: absolute;
  top: 0; bottom: 0;
  width: 120px;
  z-index: 2;
  pointer-events: none;
}
.skills-marquee::before {
  left: 0;
  background: linear-gradient(to right, #0c0c0e 30%, transparent);
}
.skills-marquee::after {
  right: 0;
  background: linear-gradient(to left, #0c0c0e 30%, transparent);
}

.skills-marquee__track {
  display: flex;
  width: max-content;
  animation: marqueeRoll 32s linear infinite;
  padding: 20px 0;
}
.skills-marquee__track:hover { animation-play-state: paused; }

@keyframes marqueeRoll {
  from { transform: translateX(0); }
  to   { transform: translateX(-50%); }
}

.skills-marquee__item {
  display: inline-flex;
  align-items: center;
  gap: 20px;
  padding: 0 20px;
  white-space: nowrap;
}
.skills-marquee__item .sk {
  font-family: "Roboto Mono", monospace;
  font-size: 11px;
  letter-spacing: var(--ls-default);
  text-transform: uppercase;
  color: rgba(255,255,255,.5);
  transition: color .2s ease;
}
.skills-marquee__item:hover .sk { color: rgba(255,255,255,.9); }
.skills-marquee__item .sep {
  width: 5px;
  height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .5;
  flex-shrink: 0;
}

/* ============================================================
   ABOUT TABS
   ============================================================ */
.about-tabs {
  display: flex;
  border-bottom: 1px solid #e2e2e2;
  background: #fff;
  position: sticky;
  top: 50px;
  z-index: 20;
}

.about-tab-btn {
  font-family: "Roboto Mono", monospace;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: var(--ls-default);
  text-transform: uppercase;
  color: #aaa;
  padding: 0 32px;
  height: 56px;
  border: none;
  border-bottom: 2px solid transparent;
  background: none;
  cursor: pointer;
  margin-bottom: -1px;
  transition: color .18s ease, border-color .18s ease;
}
.about-tab-btn:hover { color: var(--ink); }
.about-tab-btn.is-active {
  color: var(--accent);
  border-bottom-color: var(--accent);
}
.about-tab-btn:focus-visible {
  outline: 3px solid var(--accent);
  outline-offset: -3px;
  border-radius: 2px;
}

/* Panels */
.about-tab-panel { display: none; }
.about-tab-panel.is-active {
  display: block;
  animation: panelReveal .35s var(--ease-expo) both;
}
@keyframes panelReveal {
  from { opacity: 0; transform: translateY(14px); }
  to   { opacity: 1; transform: none; }
}

/* Stagger timeline items when panel opens */
.about-tab-panel.is-active .timeline-item {
  animation: panelReveal .45s var(--ease-expo) both;
  animation-delay: calc(var(--ti, 0) * 90ms + 80ms);
}

/* ---- Reduced motion --------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  body,
  .line-reveal > *,
  .scroll-indicator,
  .hero-full-container::after,
  .about-hero::after {
    animation: none !important;
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
  .reveal-left,
  .reveal-right { opacity: 1 !important; transform: none !important; transition: none !important; }
  .skills-marquee__track { animation: none !important; }
  .about-tab-panel.is-active,
  .about-tab-panel.is-active .timeline-item { animation: none !important; }
}