/* ---- edit these two lines to re-theme the whole page ---- */
:root {
  --accent: #4f7cff;
  --accent-dark: #3355cc;
  --ink: #1a1d24;
  --muted: #5b6472;
  --bg: #ffffff;
  --bg-soft: #f5f7fb;
  --border: #e5e9f0;
  --radius: 14px;
  --max: 1080px;
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica, Arial, sans-serif;
}

* { box-sizing: border-box; margin: 0; padding: 0; }
html { scroll-behavior: smooth; }
body {
  font-family: var(--font);
  color: var(--ink);
  background: var(--bg);
  line-height: 1.6;
  -webkit-font-smoothing: antialiased;
}
a { color: inherit; text-decoration: none; }
.wrap { width: 100%; max-width: var(--max); margin: 0 auto; padding: 0 24px; }

/* ---- Navigation bar ---- */
header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(255, 255, 255, 0.85);
  backdrop-filter: saturate(180%) blur(12px);
  border-bottom: 1px solid var(--border);
}
.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 66px;
}
.brand {
  font-weight: 700;
  font-size: 1.15rem;
  letter-spacing: -0.02em;
}
.brand span { color: var(--accent); }
.nav-links {
  display: flex;
  gap: 4px;
  list-style: none;
}
.nav-links a {
  display: inline-block;
  padding: 8px 14px;
  border-radius: 8px;
  font-size: 0.95rem;
  font-weight: 500;
  color: var(--muted);
  transition: color 0.15s ease, background 0.15s ease;
}
.nav-links a:hover { color: var(--ink); background: var(--bg-soft); }

.nav-toggle {
  display: none;
  background: none;
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 8px 10px;
  cursor: pointer;
  font-size: 1.1rem;
  line-height: 1;
}

/* ---- Hero ---- */
.hero { padding: 96px 0 72px; }
.eyebrow {
  display: inline-block;
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  background: var(--bg-soft);
  padding: 6px 12px;
  border-radius: 100px;
  margin-bottom: 20px;
}
.hero h1 {
  font-size: clamp(2.2rem, 5vw, 3.4rem);
  line-height: 1.1;
  letter-spacing: -0.03em;
  margin-bottom: 18px;
}
.hero p {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 620px;
  margin-bottom: 32px;
}
.btn {
  display: inline-block;
  background: var(--accent);
  color: #fff;
  font-weight: 600;
  padding: 13px 24px;
  border-radius: 10px;
  transition: background 0.15s ease, transform 0.05s ease;
}
.btn:hover { background: var(--accent-dark); }
.btn:active { transform: translateY(1px); }
.btn.ghost {
  background: transparent;
  color: var(--ink);
  border: 1px solid var(--border);
  margin-left: 10px;
}
.btn.ghost:hover { background: var(--bg-soft); }

/* ---- Generic section ---- */
section { padding: 72px 0; }
section:nth-of-type(even) { background: var(--bg-soft); }
.section-title {
  font-size: 1.8rem;
  letter-spacing: -0.02em;
  margin-bottom: 12px;
}
.section-intro { color: var(--muted); max-width: 640px; margin-bottom: 40px; }

/* ---- Cards grid (Portfolio) ---- */
.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 20px;
}
.card {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 24px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
}
.card:hover {
  transform: translateY(-3px);
  box-shadow: 0 12px 28px rgba(26, 29, 36, 0.08);
}
.card h3 {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 1.15rem;
  margin-bottom: 8px;
}
.card p { color: var(--muted); font-size: 0.95rem; }
/* Small line icon beside a card title */
.card-icon {
  flex-shrink: 0;
  display: inline-flex;
  color: var(--accent);
}
.card-icon svg { width: 22px; height: 22px; display: block; }
/* Clickable cards (anchors) get a subtle accent title on hover */
a.card:hover h3 { color: var(--accent); }

/* "View full portfolio" style link under a grid */
.view-all { margin-top: 32px; text-align: center; }
.view-all a {
  display: inline-block;
  font-weight: 600;
  color: var(--accent);
}
.view-all a:hover { color: var(--accent-dark); }

/* ---- About ---- */
.about-grid {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 48px;
  align-items: start;
}
.about p { color: var(--muted); margin-bottom: 16px; }
.skills { list-style: none; display: flex; flex-wrap: wrap; gap: 10px; }
.skills li {
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: 100px;
  padding: 8px 16px;
  font-size: 0.9rem;
  font-weight: 500;
}

/* ---- Contact ---- */
.contact { text-align: center; }
.contact .section-intro { margin: 0 auto 32px; }

/* ---- Footer ---- */
footer {
  border-top: 1px solid var(--border);
  padding: 32px 0;
  color: var(--muted);
  font-size: 0.9rem;
  text-align: center;
}

/* ---- Mobile ---- */
@media (max-width: 720px) {
  .nav-toggle { display: block; }
  .nav-links {
    position: absolute;
    top: 66px;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    padding: 8px 16px 16px;
    display: none;
  }
  .nav-links.open { display: flex; }
  .nav-links a { padding: 12px 8px; border-radius: 6px; }
  .about-grid { grid-template-columns: 1fr; gap: 32px; }
  .btn.ghost { margin-left: 0; margin-top: 10px; }
}

/* ============================================================
   PROJECT PAGE TEMPLATE
   Reusable styles for individual portfolio project pages.
   ============================================================ */

/* Neutralize only the homepage's <section> background striping on project
   pages. (Don't reset padding here — it would out-specify the per-block
   padding rules below and silently flatten their spacing.) */
.project-page section { background: transparent; }

/* ---- Breadcrumbs ---- */
.breadcrumbs { padding: 32px 0 0; }
.breadcrumbs ul {
  list-style: none;
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 8px;
  font-size: 0.9rem;
  color: var(--muted);
}
.breadcrumbs li { display: flex; align-items: center; gap: 8px; }
.breadcrumbs li + li::before { content: "/"; color: var(--border); }
.breadcrumbs a { color: var(--muted); transition: color 0.15s ease; }
.breadcrumbs a:hover { color: var(--accent); }
.breadcrumbs li[aria-current] { color: var(--ink); font-weight: 500; }

/* ---- Project hero ---- */
.project-hero { padding: 52px 0 0; }
.project-hero h1 {
  font-size: clamp(2rem, 4.5vw, 3rem);
  line-height: 1.12;
  letter-spacing: -0.03em;
  margin: 4px 0 0;
}
.project-hero .lead {
  font-size: 1.15rem;
  color: var(--muted);
  max-width: 640px;
  margin-top: 20px;
}
.project-hero .lead a { color: var(--accent); text-decoration: underline; }

/* ---- Tags (multiple, filterable later) ---- */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  list-style: none;
  margin-bottom: 20px;
}
.tag {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.07em;
  color: var(--accent);
  background: var(--bg-soft);
  border: 1px solid var(--border);
  padding: 6px 13px;
  border-radius: 100px;
}
/* Hover affordance for when tags become filter links/buttons. */
a.tag, button.tag {
  cursor: pointer;
  transition: background 0.15s ease, color 0.15s ease, border-color 0.15s ease;
}
a.tag:hover, button.tag:hover {
  background: var(--accent);
  color: #fff;
  border-color: var(--accent);
}

/* ---- Image carousel ---- */
.carousel { padding: 72px 0; }
.carousel-viewport {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-soft);
}
.carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}
.carousel-slide { min-width: 100%; }
.carousel-slide img {
  display: block;
  width: 100%;
  height: auto;
  max-height: 540px;
  object-fit: contain;
  background: var(--bg-soft);
}
.carousel-btn {
  position: absolute;
  top: 50%;
  transform: translateY(-50%);
  width: 42px;
  height: 42px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.9);
  color: var(--ink);
  font-size: 1.3rem;
  line-height: 1;
  cursor: pointer;
  transition: background 0.15s ease, transform 0.05s ease;
}
.carousel-btn:hover { background: #fff; }
.carousel-btn:active { transform: translateY(-50%) scale(0.96); }
.carousel-btn.prev { left: 14px; }
.carousel-btn.next { right: 14px; }
.carousel-dots {
  display: flex;
  justify-content: center;
  gap: 8px;
  margin-top: 16px;
}
.carousel-dot {
  width: 9px;
  height: 9px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: var(--border);
  cursor: pointer;
  transition: background 0.15s ease, transform 0.15s ease;
}
.carousel-dot.active { background: var(--accent); transform: scale(1.2); }
/* When there is only one image, hide the controls entirely. */
.carousel[data-single] .carousel-btn,
.carousel[data-single] .carousel-dots { display: none; }

/* ---- Project body / content sections ---- */
.project-body { max-width: 720px; }
.project-section { padding: 48px 0; }
/* First section sits directly under the carousel; let the carousel's own
   bottom padding provide the gap so it matches the space above the image. */
.project-body .project-section:first-child { padding-top: 0; }
/* When a project has no carousel, <main> follows the hero directly. Restore
   the top gap so the first section isn't jammed against the hero. */
.project-hero + main { padding-top: 72px; }
.project-section + .project-section { border-top: 1px solid var(--border); }
.project-section h2 {
  font-size: 1.6rem;
  letter-spacing: -0.02em;
  margin-bottom: 16px;
}
.project-section h3 {
  font-size: 1.05rem;
  margin: 24px 0 10px;
}
.project-section p { color: var(--muted); margin-bottom: 14px; }
.project-section ul { list-style: none; }
.project-section li {
  position: relative;
  padding-left: 22px;
  color: var(--muted);
  margin-bottom: 10px;
}
.project-section li::before {
  content: "";
  position: absolute;
  left: 4px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent);
}
.project-section li strong { color: var(--ink); }

/* ---- Impact stat tiles ---- */
.impact-stats {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 16px;
  margin-top: 4px;
}
.stat {
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 22px;
  background: var(--bg);
}
.stat .num {
  font-size: 1.9rem;
  font-weight: 700;
  line-height: 1.15;
  letter-spacing: -0.02em;
  color: var(--accent);
}
.stat .label {
  color: var(--muted);
  font-size: 0.92rem;
  line-height: 1.45;
  margin-top: 8px;
}

@media (max-width: 720px) {
  .carousel-btn { width: 36px; height: 36px; font-size: 1.1rem; }
  .carousel-btn.prev { left: 8px; }
  .carousel-btn.next { right: 8px; }
}

/* ============================================================
   SHOWCASE — Apple-style auto-advancing image + text carousel.
   Progress is driven by a CSS animation on the active segment;
   when it finishes, showcase.js advances to the next slide, so
   the fills and the slide changes stay in sync. Pause simply
   freezes the animation (which also halts advancing).
   ============================================================ */
.showcase { padding: 48px 0 64px; }
.showcase-viewport {
  position: relative;
  width: 100%;
  max-width: 880px;
  margin: 0 auto;
  height: clamp(300px, 34vw, 400px);
  border-radius: 20px;
  overflow: hidden;
  background: #0b0d12;
  border: 1px solid var(--border);
}

/* Slides cross-fade; each has a background layer + a scrim for legibility. */
.showcase-slide {
  position: absolute;
  inset: 0;
  opacity: 0;
  transition: opacity 0.7s ease;
}
.showcase-slide.is-active { opacity: 1; }
.showcase-bg {
  position: absolute;
  inset: 0;
  background-size: 200% 200%;
  background-position: 0% 50%;
}
/* Colorful gradient backgrounds — kept dark in the top-left corner (where the
   copy sits) so white text stays legible as the gradient drifts. */
.showcase-bg.grad-1 { background-image: linear-gradient(135deg, #1e3a8a 0%, #4f7cff 55%, #22d3ee 100%); }
.showcase-bg.grad-2 { background-image: linear-gradient(135deg, #4c1d95 0%, #7c3aed 50%, #ec4899 100%); }
.showcase-bg.grad-3 { background-image: linear-gradient(135deg, #065f46 0%, #059669 52%, #a3e635 100%); }
.showcase-slide.is-active .showcase-bg {
  animation: showcase-drift 16s ease-in-out infinite alternate;
}
@keyframes showcase-drift {
  from { background-position: 0% 50%; }
  to { background-position: 100% 50%; }
}
/* Light left-side scrim: a touch of extra contrast for the copy without
   muddying the colors. */
.showcase-scrim {
  position: absolute;
  inset: 0;
  background: linear-gradient(100deg,
    rgba(6, 8, 15, 0.45) 0%,
    rgba(6, 8, 15, 0.12) 52%,
    rgba(6, 8, 15, 0) 100%);
}
.showcase-copy {
  position: absolute;
  top: 0;
  left: 0;
  max-width: 540px;
  padding: clamp(24px, 4vw, 44px);
  color: #fff;
  text-shadow: 0 1px 24px rgba(0, 0, 0, 0.25);
}
.showcase-eyebrow {
  font-size: 0.75rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.75);
  margin-bottom: 12px;
}
.showcase-heading {
  font-size: clamp(1.5rem, 2.8vw, 2.1rem);
  line-height: 1.14;
  letter-spacing: -0.02em;
  font-weight: 700;
  margin-bottom: 14px;
}
.showcase-sub {
  font-size: clamp(1rem, 1.5vw, 1.15rem);
  line-height: 1.5;
  color: rgba(255, 255, 255, 0.9);
  max-width: 460px;
}

/* ---- Controls: segmented progress + play/pause ---- */
.showcase-controls {
  position: absolute;
  left: 0;
  right: 0;
  bottom: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 14px;
}
.showcase-progress {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 14px;
  border-radius: 100px;
  background: rgba(28, 30, 36, 0.55);
  backdrop-filter: saturate(160%) blur(12px);
}
.showcase-seg {
  position: relative;
  width: 34px;
  height: 5px;
  padding: 0;
  border: none;
  border-radius: 100px;
  background: rgba(255, 255, 255, 0.35);
  cursor: pointer;
  overflow: hidden;
}
.showcase-seg-fill {
  position: absolute;
  inset: 0;
  border-radius: inherit;
  background: #fff;
  transform: scaleX(0);
  transform-origin: left center;
}
.showcase-seg.done .showcase-seg-fill { transform: scaleX(1); }
.showcase-seg.active .showcase-seg-fill {
  animation: showcase-fill var(--showcase-dur, 6s) linear forwards;
}
.showcase.is-paused .showcase-seg.active .showcase-seg-fill {
  animation-play-state: paused;
}
@keyframes showcase-fill {
  from { transform: scaleX(0); }
  to { transform: scaleX(1); }
}
.showcase-playpause {
  width: 44px;
  height: 44px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  border-radius: 50%;
  background: rgba(28, 30, 36, 0.55);
  backdrop-filter: saturate(160%) blur(12px);
  color: #fff;
  cursor: pointer;
  transition: background 0.15s ease;
}
.showcase-playpause:hover { background: rgba(28, 30, 36, 0.85); }
.showcase-playpause svg { width: 18px; height: 18px; display: block; fill: #fff; }
.showcase-playpause .icon-play { display: none; }
.showcase.is-paused .showcase-playpause .icon-play { display: block; }
.showcase.is-paused .showcase-playpause .icon-pause { display: none; }

@media (prefers-reduced-motion: reduce) {
  .showcase-slide { transition: none; }
  .showcase-slide.is-active .showcase-bg { animation: none; }
  .showcase-seg.active .showcase-seg-fill { animation: none; transform: scaleX(1); }
}

@media (max-width: 720px) {
  .showcase-viewport { height: clamp(340px, 80vw, 440px); }
  .showcase-scrim {
    background: linear-gradient(180deg,
      rgba(8, 10, 15, 0.82) 0%,
      rgba(8, 10, 15, 0.5) 45%,
      rgba(8, 10, 15, 0.2) 100%);
  }
}