/* ─── Project Page Layout ─────────────────────────────── */

.project-page {
  display: grid;
  grid-template-columns: 278px 1fr;
  min-height: 100vh;
}

/* Override @layer reveal — un-layered CSS always wins */
.project-page h1,
.project-page h2 {
  opacity: 1;
  translate: none;
  transition: none;
}

/* ─── Sidebar ─────────────────────────────────────────── */

.project-sidebar {
  position: sticky;
  top: 0;
  height: 100vh;
  overflow-y: auto;
  padding: 3rem 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.sidebar-back {
  display: inline-flex;
  align-items: center;
  align-self: flex-start;
  gap: 0.5rem;
  padding: 0 var(--ui-inset);
  margin-bottom: 2rem;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--muted);
  text-decoration: none;
  transition: color 0.2s;
}

.sidebar-back svg {
  width: 0.75rem;
  height: 0.75rem;
}

.sidebar-back:hover {
  color: var(--fg);
}

.sidebar-title {
  font-family: var(--font-display);
  font-size: 2.5rem;
  font-weight: 400;
  line-height: 1;
  letter-spacing: 0.02em;
  white-space: nowrap;
  color: var(--fg);
  padding: 0 var(--ui-inset);
  margin-bottom: 1.5rem;
}

.project-meta {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.meta-block {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin: 0 var(--ui-inset);
  border-left: var(--hairline) solid color-mix(in srgb, var(--accent) 20%, transparent);
  padding-left: 1.25rem;
  transition: border-color 0.25s;
}

.meta-block:hover {
  border-left-color: color-mix(in srgb, var(--accent) 50%, transparent);
}

.meta-label {
  display: block;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 400;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: color-mix(in srgb, var(--accent) 40%, transparent);
  transition: color 0.25s;
}

.meta-block:hover .meta-label {
  color: var(--accent);
}

.meta-value {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 200;
  line-height: 1.5;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--fg) 40%, transparent);
  border: var(--hairline) solid rgba(255, 255, 255, 0.06);
  padding: 0.625rem 0.75rem;
  margin: 0;
  background: var(--bg);
  transition: color 0.25s, border-color 0.25s;
}

.meta-block:hover .meta-value {
  color: var(--fg);
  border-color: rgba(255, 255, 255, 0.15);
}

.meta-tags {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.meta-tag {
  display: inline-flex;
  border: var(--hairline) solid rgba(255, 255, 255, 0.08);
  padding: 0.375rem 0.625rem;
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 200;
  letter-spacing: 0.02em;
  color: color-mix(in srgb, var(--fg) 40%, transparent);
  background: var(--bg);
  transition: color 0.25s, border-color 0.25s;
}

.meta-block:hover .meta-tag {
  color: var(--fg);
  border-color: rgba(255, 255, 255, 0.2);
}

/* ─── Main Content ────────────────────────────────────── */

.project-main {
  padding: 6.5rem var(--ui-inset) 10rem 0;
}

.proj-section {
  max-width: 860px;
  margin-top: 0;
  margin-bottom: 5rem;
  margin-left: max(var(--ui-inset), calc(50vw - 430px - var(--sidebar-w, 0px)));
  margin-right: auto;
}

.proj-section:last-child {
  margin-bottom: 0;
}

/* Section header */
.proj-section-head {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin-bottom: 1rem;
}

.proj-num {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: var(--hairline) solid var(--accent);
  font-family: var(--font-mono);
  font-size: 0.8125rem;
  font-weight: 400;
  letter-spacing: 0.08em;
  color: var(--accent);
  flex-shrink: 0;
}

.proj-title {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 300;
  letter-spacing: 0.07em;
  text-transform: uppercase;
  line-height: 1;
  color: var(--fg);
}

.proj-rule {
  width: 100%;
  height: var(--hairline);
  background: rgba(255, 255, 255, 0.1);
  margin-bottom: 1.5rem;
}

/* Body text */
.proj-body {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 200;
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--fg);
  margin-bottom: 1.5rem;
}

/* Image label */
.proj-img-label {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 600;
  letter-spacing: 0.015em;
  color: var(--accent);
  margin-bottom: 0.5rem;
}

/* Bullet list */
.proj-list {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.proj-list-item {
  display: flex;
  gap: 0.75rem;
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 200;
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--fg);
  margin: 0;
}

/* Standalone bullet items (not grouped in .proj-list) get the same bottom spacing as paragraphs */
.proj-section > .proj-list-item {
  margin-bottom: 1.5rem;
}

.proj-list-item::before {
  content: '•';
  color: var(--accent);
  flex-shrink: 0;
}

.proj-list-item strong {
  font-weight: 600;
  color: var(--accent);
}

/* Image placeholder */
.proj-img-ph {
  width: 100%;
  aspect-ratio: 16 / 9;
  background: rgba(255, 255, 255, 0.03);
  border: var(--hairline) solid rgba(255, 255, 255, 0.08);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-mono);
  font-size: 0.5625rem;
  letter-spacing: 0.2em;
  text-transform: uppercase;
  color: rgba(255, 255, 255, 0.18);
  margin-bottom: 5rem;
}

/* Info card */
.info-card {
  display: flex;
  gap: 1.25rem;
  align-items: center;
  border: var(--hairline) solid color-mix(in srgb, var(--accent) 20%, transparent);
  border-left: 2px solid var(--accent);
  background: color-mix(in srgb, var(--accent) 7%, transparent);
  padding: 1.5rem 2rem;
  margin-bottom: 1.5rem;
}

.info-icon {
  width: 1.75rem;
  height: 1.75rem;
  flex-shrink: 0;
  color: var(--accent);
}

.info-card p {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 300;
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--fg);
  margin: 0;
}

/* Impact grid */
.impact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 2.5rem 2rem;
  margin-top: 3rem;
}

.impact-item {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-left: 2px solid var(--accent);
  padding: 1.75rem 0 1.75rem 1.75rem;
  background: color-mix(in srgb, var(--accent) 7%, transparent);
}

.impact-head {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.impact-arrow {
  width: 4rem;
  height: 4rem;
  flex-shrink: 0;
  color: var(--accent);
}

.impact-title {
  font-family: var(--font-mono);
  font-size: 2rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  line-height: 1.0;
  color: var(--fg);
}

.impact-metric {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 400;
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--accent);
  margin-top: 0.75rem;
}

.impact-desc {
  font-family: var(--font-mono);
  font-size: 1.125rem;
  font-weight: 200;
  line-height: 1.6;
  letter-spacing: 0.015em;
  color: var(--fg);
  margin: 0;
}

/* ─── Mobile Top Bar ─────────────────────────────────── */

.project-topbar { display: none; }

@media (max-width: 810px) {

  .project-page { display: block; }

  .project-sidebar { display: none; }

  .project-topbar {
    display: flex;
    align-items: center;
    justify-content: space-between;
    gap: 1rem;
    position: fixed;
    top: 0;
    left: 0;
    right: 0;
    z-index: 100;
    background: var(--bg);
    padding: 0.875rem var(--ui-inset);
    border-bottom: var(--hairline) solid color-mix(in srgb, var(--accent) 20%, transparent);
  }

  .topbar-info {
    display: flex;
    flex-direction: column;
    gap: 0.25rem;
    min-width: 0;
  }

  .topbar-title {
    font-family: var(--font-display);
    font-size: 2rem;
    font-weight: 400;
    line-height: 1;
    letter-spacing: 0.02em;
    color: var(--fg);
    white-space: nowrap;
  }

  .topbar-subtitle {
    font-family: var(--font-mono);
    font-size: 0.75rem;
    font-weight: 300;
    letter-spacing: 0.08em;
    color: var(--muted);
  }

  .topbar-close {
    display: flex;
    align-items: center;
    justify-content: center;
    width: 2rem;
    height: 2rem;
    flex-shrink: 0;
    border: var(--hairline) solid rgba(255, 255, 255, 0.2);
    color: var(--fg);
    text-decoration: none;
    transition: border-color 0.2s;
  }

  .topbar-close:hover { border-color: rgba(255, 255, 255, 0.6); }

  .topbar-close svg { width: 0.625rem; height: 0.625rem; }

  .project-main {
    padding-top: 7rem;
    padding-left: var(--ui-inset);
    padding-right: var(--ui-inset);
    padding-bottom: 4rem;
  }

  .proj-section,
  .proj-nav {
    max-width: 100%;
    margin-left: 0;
    margin-right: 0;
  }

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

  #hud { display: none; }

  .info-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .proj-nav {
    max-width: none;
    margin-left: calc(-1 * var(--ui-inset));
    margin-right: calc(-1 * var(--ui-inset));
    gap: 0;
    padding-bottom: 0;
  }

  .proj-nav-btn {
    flex: 1;
    justify-content: center;
    white-space: nowrap;
    border-radius: 0;
  }

  /* Primary button doesn't shrink — About Me absorbs narrow screens */
  .proj-nav .cta.proj-nav-btn { flex-shrink: 0; }
}

/* ─── Carousel ────────────────────────────────────────── */

.proj-carousel {
  width: 100%;
  margin-bottom: 5rem;
}

@keyframes skeleton-shimmer {
  from { background-position:  200% 0; }
  to   { background-position: -200% 0; }
}

.proj-img {
  width: 100%;
  height: auto;
  display: block;
  margin-bottom: 5rem;
  filter: url(#proj-outline);
  border-radius: 16px;
}

.proj-img.img-loading {
  background: linear-gradient(
    90deg,
    color-mix(in srgb, var(--bg) 93%, white) 25%,
    color-mix(in srgb, var(--bg) 82%, white) 50%,
    color-mix(in srgb, var(--bg) 93%, white) 75%
  );
  background-size: 200% 100%;
  animation: skeleton-shimmer 2.5s ease-in-out infinite;
}

.proj-carousel .proj-img {
  margin-bottom: 0;
  filter: none;
}

/* When image/carousel/comparison ends a section, let its own margin create the gap */
.proj-section:has(> .proj-img:last-child),
.proj-section:has(> .proj-img-ph:last-child),
.proj-section:has(> .proj-carousel:last-child),
.proj-section:has(> .proj-comparison:last-child),
.proj-section:has(> .proj-video-wrap:last-child) {
  margin-bottom: 0;
}

/* ─── Project navigation footer ──────────────────────────── */
.proj-nav {
  max-width: 860px;
  margin-top: 5rem;
  margin-bottom: 0;
  margin-left: max(var(--ui-inset), calc(50vw - 430px - var(--sidebar-w, 0px)));
  margin-right: auto;
  padding-bottom: 2rem;
  display: flex;
  justify-content: center;
  gap: 1rem;
}

/* Override reveal layer — un-layered CSS wins */
.proj-nav-btn {
  opacity: 1;
  translate: none;
  transition: background 0.2s, color 0.2s, border-color 0.2s;
}

@media (max-width: 810px) {
  .proj-nav {
    max-width: none;
    margin-left: 0;
    margin-right: 0;
    gap: 1rem;
    padding-bottom: 2rem;
  }

  .proj-nav-btn {
    flex: 1;
    justify-content: center;
    white-space: nowrap;
    border-radius: 0;
  }

  .proj-nav .cta.proj-nav-btn { flex-shrink: 0; }
}

/* ─── Video hint overlay ──────────────────────────────────── */
.proj-video-wrap {
  position: relative;
  margin-bottom: 5rem;
  filter: url(#proj-outline);
  border-radius: 16px;
  overflow: hidden;
}

.proj-video-wrap .proj-img {
  margin-bottom: 0;
  filter: none;
}

.proj-video-hint {
  position: absolute;
  inset: 0;
  background: rgba(0, 0, 0, 0.7);
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 0;
  pointer-events: none;
}

.proj-video-hint svg {
  width: 4rem;
  height: 4rem;
  opacity: 0.9;
}

.proj-video-hint.is-hinting {
  animation: proj-video-hint 1.75s ease-out forwards;
}

@keyframes proj-video-hint {
  0%   { opacity: 1; }
  45%  { opacity: 1; }
  100% { opacity: 0; }
}

/* ─── Comparison Slider ───────────────────────────────────── */

.proj-comparison {
  position: relative;
  overflow: hidden;
  width: 100%;
  margin-bottom: 5rem;
  cursor: col-resize;
  user-select: none;
  -webkit-user-select: none;
  touch-action: none;
  border-radius: 16px;
  box-shadow: 0 0 0 var(--hairline) color-mix(in srgb, var(--accent) 25%, transparent);
}

.proj-comparison-after {
  display: block;
  width: 100%;
  height: auto;
}

.proj-comparison-before-wrap {
  position: absolute;
  top: 0;
  left: 0;
  height: 100%;
  width: 50%;
  overflow: hidden;
}

.proj-comparison-before {
  display: block;
  height: auto;
}

.proj-comparison-handle {
  position: absolute;
  top: 0;
  bottom: 0;
  left: 50%;
  width: var(--hairline);
  background: var(--accent);
  transform: translateX(-50%);
  pointer-events: none;
  box-shadow: 0 0 16px 4px rgba(0, 0, 0, 0.45);
}

.proj-comparison-handle-icon {
  position: absolute;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  display: block;
}

.proj-comparison-after-label-area {
  position: absolute;
  top: 0;
  bottom: 0;
  right: 0;
  left: 50%;
  overflow: hidden;
  pointer-events: none;
}

.proj-comparison-label {
  position: absolute;
  top: 1rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  font-weight: 400;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  white-space: nowrap;
  color: #fff;
  background: var(--bg);
  padding: 0.3em 0.75em;
  pointer-events: none;
}

.proj-comparison-label-left  { left: 1rem; }
.proj-comparison-label-right { right: 1rem; }

.proj-carousel-viewport {
  overflow: hidden;
  border-radius: 16px;
  box-shadow: 0 0 0 var(--hairline) color-mix(in srgb, var(--accent) 25%, transparent);
}

@media (max-width: 810px) {
  .proj-img,
  .proj-carousel-viewport,
  .proj-comparison { border-radius: 8px; }
}

.proj-carousel-track {
  display: flex;
  transition: transform 0.4s ease;
}

.proj-carousel-slide {
  min-width: 100%;
}

.proj-carousel-slide .proj-img-ph {
  margin-bottom: 0;
}

.proj-carousel-caption {
  font-family: var(--font-mono);
  font-size: 0.875rem;
  font-weight: 200;
  letter-spacing: 0.015em;
  line-height: 1.6;
  color: var(--fg);
  text-align: center;
  padding: 0.75rem 1rem 0;
  min-height: 2.5rem;
}

.proj-carousel-controls {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1.5rem;
  margin-top: 1rem;
}

/* No caption: bring counter to where caption top would be */
.proj-carousel:not(:has(.proj-carousel-caption)) .proj-carousel-controls {
  margin-top: 0.75rem;
}

.proj-carousel-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  border: var(--hairline) solid rgba(255, 255, 255, 0.15);
  background: transparent;
  color: var(--muted);
  cursor: default;
  transition: border-color 0.2s, color 0.2s, background 0.2s;
}

.proj-carousel-btn:not(:disabled) {
  border-color: var(--accent);
  color: var(--accent);
  cursor: pointer;
}

.proj-carousel-btn:not(:disabled):hover {
  background: var(--accent);
  color: var(--bg);
}

.proj-carousel-btn svg {
  width: 0.625rem;
  height: 0.625rem;
}

.proj-carousel-counter {
  font-family: var(--font-mono);
  font-size: 0.75rem;
  font-weight: 300;
  letter-spacing: 0.2em;
  color: var(--fg);
}

/* ─── Section head entrance animations ─────────────────── */
@keyframes proj-num-in {
  from { opacity: 0; transform: translateY(2rem); }
  to   { opacity: 1; transform: translateY(0); }
}

@keyframes proj-title-in {
  from { opacity: 0; transform: translateX(-2rem); }
  to   { opacity: 1; transform: translateX(0); }
}

@keyframes proj-rule-in {
  from { transform: scaleX(0); }
  to   { transform: scaleX(1); }
}

.proj-num.anim-num {
  animation: proj-num-in 0.3s ease-out both;
}

.proj-title.anim-title {
  animation: proj-title-in 0.3s ease-out 0.2s both;
}

.proj-rule.anim-rule {
  transform-origin: left;
  animation: proj-rule-in 0.3s ease-out 0.2s both;
}