/* Header */
.site-header {
  position: sticky;
  z-index: 100;
  top: 0;
  border-bottom: 1px solid transparent;
  background: rgba(8, 9, 10, 0.75);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  transition: border-color var(--transition-fast), background var(--transition-fast);
}

.site-header.is-scrolled {
  border-color: var(--border);
  background: rgba(8, 9, 10, 0.92);
}

.nav {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  min-height: 4.8rem;
  gap: 2rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: 0.8rem;
}

.brand-mark {
  display: grid;
  width: 2.1rem;
  height: 2.1rem;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 0.45rem;
  background: rgba(255, 255, 255, 0.03);
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 700;
  letter-spacing: -0.04em;
}

.brand-copy {
  display: grid;
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 600;
  line-height: 1.2;
  letter-spacing: -0.01em;
}

.brand-copy small {
  color: var(--text-muted);
  font-size: 0.65rem;
  font-weight: 400;
  letter-spacing: 0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: clamp(1rem, 2.2vw, 2rem);
}

.nav-link {
  position: relative;
  padding: 0.4rem 0.2rem;
  color: var(--text-soft);
  font-size: 0.84rem;
  font-weight: 450;
  transition: color var(--transition-fast);
}

.nav-link::after {
  position: absolute;
  right: 0;
  bottom: 0;
  left: 0;
  height: 1.5px;
  transform: scaleX(0);
  transform-origin: right;
  background: var(--text);
  content: "";
  transition: transform var(--transition);
}

.nav-link:hover,
.nav-link[aria-current="page"] {
  color: var(--text);
}

.nav-link:hover::after,
.nav-link[aria-current="page"]::after {
  transform: scaleX(1);
  transform-origin: left;
}

.nav-toggle {
  display: none;
  width: 2.75rem;
  height: 2.75rem;
  padding: 0;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: 50%;
  background: var(--surface);
  color: var(--text);
}

.nav-toggle-lines,
.nav-toggle-lines::before,
.nav-toggle-lines::after {
  width: 1.1rem;
  height: 1.5px;
  background: currentColor;
  content: "";
  transition: transform var(--transition-fast);
}

.nav-toggle-lines {
  position: relative;
}

.nav-toggle-lines::before,
.nav-toggle-lines::after {
  position: absolute;
  left: 0;
}

.nav-toggle-lines::before { transform: translateY(-0.35rem); }
.nav-toggle-lines::after { transform: translateY(0.35rem); }
.menu-open .nav-toggle-lines { background: transparent; }
.menu-open .nav-toggle-lines::before { transform: rotate(45deg); }
.menu-open .nav-toggle-lines::after { transform: rotate(-45deg); }

/* Buttons */
.button {
  --magnetic-x: 0px;
  --magnetic-y: 0px;
  display: inline-flex;
  min-height: 2.75rem;
  padding: 0.65rem 1.3rem;
  transform: translate(var(--magnetic-x), var(--magnetic-y));
  align-items: center;
  justify-content: center;
  gap: 0.55rem;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text);
  font-size: 0.83rem;
  font-weight: 500;
  white-space: nowrap;
  transition: background var(--transition-fast), color var(--transition-fast), border-color var(--transition-fast), transform 120ms ease;
}

.button:hover {
  border-color: rgba(255, 255, 255, 0.3);
  background: rgba(255, 255, 255, 0.05);
}

.button--primary {
  border-color: #ffffff;
  background: #ffffff;
  color: #0a0b0c;
  font-weight: 550;
}

.button--primary:hover {
  border-color: #f0f0f0;
  background: #f0f0f0;
  color: #000000;
  box-shadow: 0 4px 18px rgba(255, 255, 255, 0.12);
}

.button--nav {
  min-height: 2.45rem;
  padding: 0.5rem 1.1rem;
  font-size: 0.8rem;
  border-color: var(--border-strong);
  background: rgba(255, 255, 255, 0.02);
}

.button--nav:hover {
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.35);
}

.button-arrow {
  display: inline-block;
  transition: transform var(--transition-fast);
}

.button:hover .button-arrow,
.project-card:hover .button-arrow {
  transform: translateX(0.25rem);
}

.button-row {
  display: flex;
  align-items: center;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Mouse Scroll Indicator */
.scroll-indicator {
  display: inline-flex;
  align-items: center;
  gap: 0.75rem;
  margin-top: 2rem;
  color: var(--text-muted);
  font-size: 0.78rem;
}

.mouse-icon {
  position: relative;
  width: 1.15rem;
  height: 1.85rem;
  border: 1.5px solid var(--text-muted);
  border-radius: 999px;
}

.mouse-wheel {
  position: absolute;
  top: 0.35rem;
  left: 50%;
  width: 2px;
  height: 4px;
  transform: translateX(-50%);
  border-radius: 1px;
  background: var(--text-soft);
  animation: mouseScroll 1.8s infinite;
}

@keyframes mouseScroll {
  0% { opacity: 1; transform: translate(-50%, 0); }
  60% { opacity: 0; transform: translate(-50%, 6px); }
  100% { opacity: 0; transform: translate(-50%, 0); }
}

/* Cards & Spotlight */
.card {
  position: relative;
  overflow: hidden;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  transition: border-color var(--transition-fast), background var(--transition-fast), transform var(--transition);
}

.interactive-card::before {
  position: absolute;
  z-index: 0;
  inset: 0;
  background: radial-gradient(30rem circle at var(--mouse-x, 50%) var(--mouse-y, 50%), rgba(105, 175, 232, 0.1), transparent 50%);
  content: "";
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
}

.interactive-card:hover::before {
  opacity: 1;
}

/* Tag Pills */
.tag-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.45rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.28rem 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  background: rgba(255, 255, 255, 0.02);
  color: var(--text-soft);
  font-size: 0.72rem;
  line-height: 1.2;
}

.tag--active {
  border-color: var(--border-strong);
  color: var(--text);
  background: rgba(255, 255, 255, 0.04);
}

/* Project Card */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 1.25rem;
}

.project-card {
  display: flex;
  min-width: 0;
  flex-direction: column;
  padding: 0.85rem;
}

.project-card[hidden] {
  display: none !important;
}

.project-card:hover {
  transform: translateY(-0.25rem);
  border-color: var(--border-strong);
}

.project-card > * {
  position: relative;
  z-index: 1;
}

.project-media-wrapper {
  overflow: hidden;
  border-radius: calc(var(--radius-md) - 0.25rem);
  background: #0d0f12;
}

.project-media,
.case-cover {
  position: relative;
  display: grid;
  overflow: hidden;
  aspect-ratio: 16 / 10;
  place-items: center;
  border: 1px solid var(--border);
  border-radius: inherit;
  background: #0d0f12;
}

.project-media img,
.case-cover img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: transform 600ms cubic-bezier(0.2, 0.8, 0.2, 1);
}

.project-card:hover .project-media img {
  transform: scale(1.03);
}

.media-placeholder {
  display: grid;
  padding: 1.5rem;
  place-items: center;
  gap: 0.65rem;
  color: var(--text-muted);
  text-align: center;
}

.media-placeholder-mark {
  display: grid;
  width: 2.8rem;
  height: 2.8rem;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  color: var(--accent);
  font-size: 0.74rem;
  font-weight: 600;
}

.project-card-body {
  display: flex;
  flex-direction: column;
  flex: 1;
  padding: 1.15rem 0.35rem 0.35rem;
}

.project-card-title {
  margin-bottom: 0.45rem;
  font-size: clamp(1.2rem, 1.8vw, 1.45rem);
  font-weight: 550;
}

.project-card-desc {
  margin-bottom: 1.1rem;
  font-size: 0.86rem;
  line-height: 1.55;
  color: var(--text-soft);
  flex-grow: 1;
}

.project-card-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-top: auto;
}

.project-circle-btn {
  display: grid;
  width: 2.2rem;
  height: 2.2rem;
  flex-shrink: 0;
  place-items: center;
  border: 1px solid var(--border-strong);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.02);
  color: var(--text);
  transition: background var(--transition-fast), border-color var(--transition-fast), transform var(--transition-fast);
}

.project-card:hover .project-circle-btn {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
  transform: translateX(2px);
}

/* Quotes */
.quote-card {
  position: relative;
  padding: 1.25rem 1.4rem;
  border: 1px solid rgba(255, 255, 255, 0.09);
  border-radius: var(--radius-md);
  background: rgba(18, 20, 24, 0.78);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  box-shadow: 0 10px 30px rgba(0, 0, 0, 0.45);
}

.quote-text {
  margin-bottom: 0.4rem;
  color: var(--text);
  font-size: 0.95rem;
  font-style: italic;
  line-height: 1.45;
}

.quote-author {
  display: block;
  color: var(--text-muted);
  font-size: 0.78rem;
  font-style: normal;
}

/* Checklists */
.checklist {
  display: grid;
  gap: 0.8rem;
  margin: 0;
  padding: 0;
  list-style: none;
}

.checklist-item {
  display: flex;
  align-items: flex-start;
  gap: 0.75rem;
  color: var(--text);
  font-size: 0.92rem;
  line-height: 1.5;
}

.check-icon {
  display: grid;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
  place-items: center;
  margin-top: 0.12rem;
  border-radius: 50%;
  background: var(--accent-soft);
  color: var(--accent);
}

/* Tech Badges / Cards (Detail Page) */
.tech-cards-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(8.5rem, 1fr));
  gap: 0.85rem;
}

.tech-badge-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 1.2rem 0.8rem;
  gap: 0.65rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--surface);
  text-align: center;
}

.tech-badge-icon {
  display: grid;
  width: 2.6rem;
  height: 2.6rem;
  place-items: center;
  border-radius: var(--radius-sm);
  background: rgba(255, 255, 255, 0.03);
  color: var(--accent);
}

.tech-badge-name {
  color: var(--text);
  font-size: 0.82rem;
  font-weight: 500;
}

/* Footer */
.site-footer {
  border-top: 1px solid var(--border);
  background: var(--bg);
}

.footer-grid {
  display: grid;
  padding-block: 2.4rem;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: 2rem;
}

.footer-note {
  color: var(--text-muted);
  font-size: 0.8rem;
  text-align: center;
}

.footer-links {
  display: flex;
  align-items: center;
  gap: 1.4rem;
  color: var(--text-muted);
  font-size: 0.8rem;
}

.footer-links a:hover {
  color: var(--text);
}

.footer-location {
  color: var(--text-soft);
}