/* ==========================================================================
   COMPONENTS
   ========================================================================== */

/* ---- Logo / wordmark ---- */
.nav-logo {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

.nav-logo strong { color: var(--color-teal); }

.nav-link {
  font-size: 0.9rem;
  color: var(--color-gray);
  transition: color var(--dur-fast) var(--ease-standard);
}

.nav-link:hover, .nav-link:focus-visible { color: var(--color-white); }

.nav-toggle {
  display: none;
  flex-direction: column;
  gap: 5px;
  padding: 0.5rem;
}

.nav-toggle span {
  width: 22px; height: 2px;
  background: var(--color-white);
  transition: transform var(--dur-fast) var(--ease-standard), opacity var(--dur-fast) var(--ease-standard);
}

.nav-toggle[aria-expanded="true"] span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] span:nth-child(2) { opacity: 0; }
.nav-toggle[aria-expanded="true"] span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* ---- Buttons ---- */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.95rem 1.75rem;
  font-size: 0.92rem;
  font-weight: 600;
  letter-spacing: 0.01em;
  border-radius: var(--radius-sm);
  transition: background var(--dur-fast) var(--ease-standard),
              color var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard),
              transform var(--dur-fast) var(--ease-standard);
  white-space: nowrap;
}

.btn:hover { transform: translateY(-2px); }

.btn-primary {
  background: var(--color-teal);
  color: var(--color-navy);
}
.btn-primary:hover { background: #46918c; }

.btn-outline {
  border: 1px solid var(--color-hairline-strong);
  color: var(--color-white);
}
.btn-outline:hover { border-color: var(--color-teal); color: var(--color-teal); }

.btn-dark {
  background: var(--color-navy);
  color: var(--color-white);
}
.btn-dark:hover { background: var(--color-deep-blue); }

.btn[aria-disabled="true"] {
  opacity: 0.5;
  pointer-events: none;
}

.btn-icon { width: 16px; height: 16px; flex-shrink: 0; }

/* ---- Stat block ---- */
.stat {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.stat-value {
  font-family: var(--font-mono);
  font-size: var(--fs-stat);
  font-weight: 600;
  line-height: 1;
  color: var(--color-white);
  font-variant-numeric: tabular-nums;
}

.stat-label {
  font-size: 0.82rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray);
}

.impact-section .stat-value { color: var(--color-navy); }
.impact-section .stat-label { color: rgba(11, 23, 42, 0.65); }

/* ---- Tags ---- */
.tag {
  display: inline-flex;
  align-items: center;
  padding: 0.4rem 0.85rem;
  font-size: 0.78rem;
  font-family: var(--font-mono);
  letter-spacing: 0.02em;
  border: 1px solid var(--color-hairline-strong);
  border-radius: 999px;
  color: var(--color-gray);
}

.tag--accent {
  border-color: var(--color-teal-border);
  color: var(--color-teal);
  background: var(--color-teal-tint);
}

/* ---- Placeholder box (graceful missing-asset state) ---- */
.placeholder-box {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100%; height: 100%;
  background:
    linear-gradient(135deg, var(--color-deep-blue), var(--color-navy));
  border: 1px dashed var(--color-hairline-strong);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.placeholder-box img {
  position: absolute;
  inset: 0;
  width: 100%; height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-standard);
}

.placeholder-box.is-loaded img { opacity: 1; }

.placeholder-box .placeholder-fallback {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.6rem;
  text-align: center;
  padding: 1.5rem;
  color: var(--color-gray);
}

.placeholder-box.is-loaded { border-style: solid; }

.placeholder-box.is-loaded .placeholder-fallback { display: none; }

/* Compact variant — used for small circular slots (e.g. the Hero
   avatar) where only a short monogram fits. */
.placeholder-box--compact { border-radius: 50%; border: none; }
.placeholder-box--compact .placeholder-fallback { padding: 0; gap: 0; }
.placeholder-box--compact .pf-title {
  font-size: 0.95rem;
  letter-spacing: 0.02em;
  color: var(--color-white);
}

.placeholder-fallback svg { width: 28px; height: 28px; opacity: 0.6; }
.placeholder-fallback .pf-eyebrow {
  font-family: var(--font-mono);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal-text);
}
.placeholder-fallback .pf-title {
  font-family: var(--font-mono);
  font-size: 0.72rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-gray);
}
.placeholder-fallback .pf-sub {
  font-size: 0.78rem;
  color: rgba(148, 163, 184, 0.7);
}

/* ---- Hero visual composition (conceptual, not a screenshot) ----
   DATA → MONITORING → INSIGHT → ACTION, built entirely from DOM/CSS.
   If a real dashboard image is later added at that path, it
   crossfades in and this composition steps back — see
   js/main.js renderHeroVisual(). */
.hero-visual-composition {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  padding: clamp(1.5rem, 4vw, 2.25rem);
  transition: opacity var(--dur-med) var(--ease-standard);
}

.hero-visual-caption {
  flex: 0 0 auto;
  font-family: var(--font-mono);
  font-size: 0.66rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray);
  opacity: 0.8;
  margin-bottom: 1.25rem;
}

.hero-visual-flow {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.85rem;
}

.flow-node {
  width: 100%;
  max-width: 210px;
  padding: 0.85rem 1.1rem;
  text-align: center;
  font-family: var(--font-mono);
  font-size: 0.82rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-white);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-sm);
  background: rgba(248, 250, 252, 0.03);
}

.flow-node--accent {
  border-color: var(--color-teal);
  background: var(--color-teal-tint);
  color: var(--color-teal);
}

.flow-connector {
  width: 1px;
  height: 20px;
  background: var(--color-hairline-strong);
}

.hero-visual-real-image {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  opacity: 0;
  transition: opacity var(--dur-med) var(--ease-standard);
}

.hero-visual.is-loaded .hero-visual-composition { opacity: 0; pointer-events: none; }
.hero-visual.is-loaded .hero-visual-real-image { opacity: 1; }

/* ---- Data grid motif (signature element) ----
   A literal grid of cells representing the 860 x 49 operational
   dataset. Used in "The Problem" (scattered) and resolved into a
   clean panel in "The Turning Point" / case study. */
.data-grid {
  --cols: 14;
  display: grid;
  grid-template-columns: repeat(var(--cols), 1fr);
  gap: 3px;
  aspect-ratio: 4/3;
  padding: clamp(1rem, 2vw, 1.5rem);
  background: var(--color-navy);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
}

.data-grid .cell {
  aspect-ratio: 1;
  border-radius: 1px;
  background: rgba(148, 163, 184, 0.14);
}

.data-grid .cell.is-flagged { background: var(--color-teal); }

/* ---- Case study chapter ---- */
.case-chapter-index {
  font-family: var(--font-mono);
  font-size: 1rem;
  font-weight: 600;
  color: var(--color-teal-text);
  letter-spacing: 0.06em;
}

.case-chapter-title {
  font-family: var(--font-display);
  font-size: 1.35rem;
  font-weight: 700;
  margin-top: 0.5rem;
  color: var(--color-white);
}

/* ---- Project card ---- */
.project-card {
  display: block;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-lg);
  overflow: hidden;
  background: var(--color-deep-blue);
  transition: transform var(--dur-fast) var(--ease-standard),
              border-color var(--dur-fast) var(--ease-standard);
}

.project-card:hover, .project-card:focus-within {
  transform: translateY(-6px);
  border-color: var(--color-teal-border);
}

.project-card-media {
  aspect-ratio: 16/10;
  overflow: hidden;
}

.project-card-media .placeholder-box { border-radius: 0; border: none; }

.project-card:hover .placeholder-box img,
.project-card:focus-within .placeholder-box img {
  transform: scale(1.035);
}

.placeholder-box img { transition: opacity var(--dur-med) var(--ease-standard), transform var(--dur-med) var(--ease-standard); }

.project-card-body { padding: clamp(1.5rem, 3vw, 2rem); }

.project-card-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 0.85rem;
}

.project-card-index {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  color: var(--color-gray);
}

.project-card-title {
  font-family: var(--font-display);
  font-size: 1.3rem;
  font-weight: 700;
  color: var(--color-white);
  margin-bottom: 0.5rem;
}

.project-card-desc {
  color: var(--color-gray);
  font-size: 0.95rem;
  margin-bottom: 1.25rem;
}

.project-card-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.5rem;
}

.project-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-teal-text);
}

button.project-card-link { padding: 0; }

.project-card-link svg {
  width: 14px; height: 14px;
  transition: transform var(--dur-fast) var(--ease-standard);
}

.project-card:hover .project-card-link svg,
.project-card:focus-within .project-card-link svg { transform: translateX(4px); }

/* ---- Timeline item ---- */
.timeline-item {
  display: grid;
  grid-template-columns: minmax(120px, 180px) minmax(0, 1fr);
  gap: clamp(1.5rem, 4vw, 3rem);
  padding-block: clamp(1.75rem, 3.5vw, 2.5rem);
  border-top: 1px solid var(--color-hairline);
}

.timeline-item:first-child { border-top: none; }

.timeline-years {
  font-family: var(--font-mono);
  font-size: 0.95rem;
  color: var(--color-teal-text);
}

.timeline-company {
  font-family: var(--font-display);
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0.3rem;
}

.timeline-role {
  color: var(--color-gray);
  font-size: 0.94rem;
}

/* ---- Skill category ---- */
.skill-card {
  padding: clamp(1.5rem, 3vw, 2rem);
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  background: var(--color-navy-70);
}

.skill-card-title {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: var(--color-teal-text);
  margin-bottom: 1.1rem;
}

.skill-card ul { display: flex; flex-direction: column; gap: 0.6rem; }
.skill-card li {
  font-size: 0.94rem;
  color: var(--color-white);
  padding-left: 1rem;
  position: relative;
}
.skill-card li::before {
  content: "";
  position: absolute;
  left: 0; top: 0.55em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--color-teal);
}

/* ---- Contact channel row ---- */
.contact-channel {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.15rem 1.5rem;
  border: 1px solid var(--color-hairline);
  border-radius: var(--radius-md);
  transition: border-color var(--dur-fast) var(--ease-standard), opacity var(--dur-fast) var(--ease-standard);
}

.contact-channel:hover { border-color: var(--color-teal-border); }

.contact-channel[aria-disabled="true"] {
  opacity: 0.55;
  pointer-events: none;
}

.contact-channel-cta {
  flex-shrink: 0;
  font-size: 0.88rem;
  font-weight: 600;
  color: var(--color-teal-text);
  white-space: nowrap;
}

.contact-channel-label {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-gray);
}

.contact-channel-value { font-size: 1.02rem; margin-top: 0.25rem; }

/* ---- Flow chip (Turning Point) ---- */
.flow-chip {
  display: inline-flex;
  align-items: center;
  padding: 0.85rem 1.35rem;
  border-radius: var(--radius-sm);
  border: 1px solid var(--color-hairline-strong);
  font-family: var(--font-mono);
  font-size: 0.88rem;
  color: var(--color-white);
}

.flow-chip--accent {
  border-color: var(--color-teal);
  background: var(--color-teal-tint);
  color: var(--color-teal);
}

.flow-arrow {
  color: var(--color-gray);
  font-size: 1.1rem;
}

/* ---- Case media caption ---- */
.media-caption {
  font-size: 0.82rem;
  color: var(--color-gray);
  margin-top: 0.75rem;
}

/* ---- Project case-study modal (for projects without a full
   on-page case study) ---- */
.project-modal-overlay {
  position: fixed;
  inset: 0;
  z-index: 200;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 5vh 5vw;
  background: rgba(11, 23, 42, 0.72);
  backdrop-filter: blur(4px);
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--dur-fast) var(--ease-standard);
}

.project-modal-overlay.is-open {
  opacity: 1;
  pointer-events: auto;
}

.project-modal {
  position: relative;
  width: 100%;
  max-width: 720px;
  max-height: 86vh;
  overflow-y: auto;
  background: var(--color-deep-blue);
  border: 1px solid var(--color-hairline-strong);
  border-radius: var(--radius-lg);
  padding: clamp(1.75rem, 4vw, 2.75rem);
  transform: translateY(16px);
  transition: transform var(--dur-fast) var(--ease-standard);
}

.project-modal-overlay.is-open .project-modal { transform: translateY(0); }

.project-modal:focus { outline: none; }

.project-modal-close {
  position: absolute;
  top: 1.25rem;
  right: 1.25rem;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border: 1px solid var(--color-hairline-strong);
  border-radius: 50%;
  color: var(--color-white);
  transition: border-color var(--dur-fast) var(--ease-standard);
}

.project-modal-close:hover { border-color: var(--color-teal); color: var(--color-teal); }
.project-modal-close svg { width: 16px; height: 16px; }

@media (prefers-reduced-motion: reduce) {
  .project-modal-overlay, .project-modal { transition: none; }
}