/* ==========================================================================
   Component Styles — Personal Portfolio
   Hallmark · Specimen macrostructure · Atelier theme · Editorial genre
   ========================================================================== */

/* --------------------------------------------------------------------------
   Font Display
   Google Fonts loaded with &display=swap in the <link> URL, ensuring
   font-display: swap is applied to all web font @font-face rules.
   Text remains visible with system fallbacks during font loading.
   If self-hosting fonts in the future, declare font-display: swap
   in each @font-face block.
   -------------------------------------------------------------------------- */

/* --------------------------------------------------------------------------
   Interactive Element States (8 states)
   Default, Hover, Focus-visible, Active, Disabled, Loading, Error, Success
   -------------------------------------------------------------------------- */

/* --- Default state --- */
.btn,
.cta-outline,
a,
button,
input,
select,
textarea {
  transition: background-color 0.2s ease, border-color 0.2s ease, color 0.2s ease;
}

/* --- Hover state (pointer devices only) --- */
@media (hover: hover) {
  .btn:hover:not(:disabled):not([aria-disabled="true"]),
  .cta-outline:hover:not(:disabled):not([aria-disabled="true"]) {
    background-color: var(--color-paper-2);
    border-color: var(--color-ink-2);
    transform: translateY(-1px);
  }

  a:hover:not(:disabled):not([aria-disabled="true"]) {
    color: var(--color-accent);
  }

  input:hover:not(:disabled):not([aria-disabled="true"]),
  select:hover:not(:disabled):not([aria-disabled="true"]),
  textarea:hover:not(:disabled):not([aria-disabled="true"]) {
    background-color: var(--color-paper-2);
  }
}

/* --- Focus-visible state --- */
:focus {
  outline: none;
}

:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
  border-radius: inherit;
  transition-duration: 0ms; /* Focus ring appears instantly — no animation */
}

/* --- Active / Pressed state --- */
.btn:active:not(:disabled):not([aria-disabled="true"]),
.cta-outline:active:not(:disabled):not([aria-disabled="true"]),
button:active:not(:disabled):not([aria-disabled="true"]) {
  transform: translateY(1px);
  background-color: var(--color-paper-3);
}

a:active:not(:disabled):not([aria-disabled="true"]) {
  color: var(--color-ink-2);
}

/* --- Disabled state --- */
.btn:disabled,
.btn[aria-disabled="true"],
.cta-outline:disabled,
.cta-outline[aria-disabled="true"],
button:disabled,
button[aria-disabled="true"],
input:disabled,
input[aria-disabled="true"],
select:disabled,
select[aria-disabled="true"],
textarea:disabled,
textarea[aria-disabled="true"] {
  opacity: 0.5;
  cursor: not-allowed;
  pointer-events: none;
}

/* --- Loading state --- */
.btn--loading,
.cta-outline--loading {
  position: relative;
  color: transparent;
  pointer-events: none;
}

.btn--loading::after,
.cta-outline--loading::after {
  content: "";
  position: absolute;
  inset: 0;
  margin: auto;
  width: 1em;
  height: 1em;
  border: 2px solid var(--color-ink);
  border-top-color: transparent;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* --- Error state --- */
.btn--error,
.cta-outline--error,
input.is-error,
select.is-error,
textarea.is-error {
  border-color: var(--color-error);
}

input.is-error,
select.is-error,
textarea.is-error {
  border-color: var(--color-error);
}

.field-error {
  color: var(--color-error);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

/* --- Success state --- */
.btn--success,
.cta-outline--success,
input.is-success,
select.is-success,
textarea.is-success {
  border-color: var(--color-success);
}

.field-success {
  color: var(--color-success);
  font-size: var(--font-size-sm);
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .btn--loading::after,
  .cta-outline--loading::after {
    animation: none;
    border-top-color: var(--color-ink);
  }
}

/* --------------------------------------------------------------------------
   Profile Section
   -------------------------------------------------------------------------- */
.profile {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-8);
  text-align: center;
}

#profile {
  border-top: none;
}

/* Photo column */
.profile__photo-col {
  flex-shrink: 0;
}

.profile__photo-wrapper {
  display: block;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  background-color: var(--color-paper-3);
  border: 1px solid var(--color-rule);
  box-shadow: 0 0 0 6px var(--color-paper-2);
}

.profile__photo-wrapper--fallback {
  display: flex;
  align-items: center;
  justify-content: center;
  background-color: var(--color-paper-3);
  border: 1px solid var(--color-rule);
}

.profile__photo-wrapper--fallback::after {
  content: "";
  display: block;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background-color: var(--color-rule);
}

.profile__photo {
  width: 100%;
  height: 100%;
  object-fit: cover;
  border-radius: 50%;
}

/* Placeholder when no photo has been uploaded yet */
.profile__photo-placeholder {
  display: flex;
  width: 100%;
  height: 100%;
  align-items: center;
  justify-content: center;
  background-color: var(--color-paper-3);
}
.profile__photo-placeholder::after {
  content: "";
  display: block;
  width: 40%;
  height: 40%;
  border-radius: 50%;
  background-color: var(--color-rule);
}

/* Text column */
.profile__text-col {
  text-align: center;
}

.profile__eyebrow {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin-bottom: var(--space-4);
}

.profile__eyebrow::before {
  content: "";
  width: 0.5rem;
  height: 0.5rem;
  border-radius: 50%;
  background-color: var(--color-accent);
}

.profile__name {
  font-family: var(--font-display);
  font-size: clamp(2.25rem, 1.6rem + 3vw, 4rem);
  font-weight: var(--weight-semibold);
  font-style: italic;
  line-height: var(--leading-tight);
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  margin-bottom: var(--space-4);
  text-wrap: balance;
}

.profile__title {
  font-family: var(--font-body);
  font-size: clamp(1.125rem, 1rem + 0.5vw, 1.375rem);
  font-weight: var(--weight-regular);
  line-height: var(--leading-snug);
  letter-spacing: var(--tracking-wide);
  color: var(--color-ink-2);
  margin-bottom: var(--space-6);
}

.profile__summary {
  font-family: var(--font-body);
  font-size: var(--font-size-md);
  line-height: var(--leading-relaxed);
  color: var(--color-ink-2);
  max-width: var(--measure);
  margin-inline: auto;
}

/* Profile — Tablet+ (≥768px): photo left, text right, left-aligned */
@media (min-width: 768px) {
  .profile {
    display: grid;
    grid-template-columns: auto 1fr;
    align-items: center;
    gap: var(--space-2xl);
    text-align: left;
  }

  .profile > .profile__photo-col {
    grid-column: 1;
    grid-row: 1;
    display: flex;
    justify-content: center;
    align-items: center;
  }

  .profile__photo-wrapper {
    width: 168px;
    height: 168px;
  }

  .profile > .profile__text-col {
    grid-column: 2;
    grid-row: 1;
    text-align: left;
  }

  .profile__summary {
    margin-inline: 0;
  }
}

/* Profile — Desktop (≥1024px): larger photo */
@media (min-width: 1024px) {
  .profile__photo-wrapper {
    width: 200px;
    height: 200px;
  }
}

/* --------------------------------------------------------------------------
   Chip / Tag Component (C1 Outlined)
   -------------------------------------------------------------------------- */
.chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.4rem 0.85rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-full);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: 1.4;
  color: var(--color-ink-2);
  background: var(--color-paper-2);
  white-space: nowrap;
}

.chip--accent {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: transparent;
}

.chip--sm {
  padding: 0.2rem 0.6rem;
  font-size: var(--text-xs);
}

.chip-list.cert-entry__skills {
  margin-top: 0.35rem;
}

.chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.35rem;
  list-style: none;
  padding: 0;
  margin: 0;
}

/* --------------------------------------------------------------------------
   Section Headings — Specimen Numbering (stacked: number above title)
   Vertical stack avoids the templated tag-left / heading-right tell.
   -------------------------------------------------------------------------- */
.section-head {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-bottom: var(--space-xl);
}

.section-head__num {
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  font-weight: 500;
  letter-spacing: 0.16em;
  text-transform: uppercase;
  color: var(--color-accent);
  white-space: nowrap;
}

/* Small accent tick before the section number */
.section-head__num::before {
  content: "";
  width: 1.75rem;
  height: 2px;
  background-color: var(--color-accent);
}

.section-head__title {
  font-family: var(--font-display);
  font-size: clamp(1.75rem, 1.4rem + 1.5vw, 2.75rem);
  font-weight: 400;
  font-style: italic;
  letter-spacing: var(--tracking-tight);
  color: var(--color-ink);
  margin: 0;
  line-height: var(--leading-tight);
}

@media (min-width: 768px) {
  .section-head {
    margin-bottom: var(--space-2xl);
  }
}

/* --------------------------------------------------------------------------
   Hairline Rules Between Sections
   -------------------------------------------------------------------------- */
.rule {
  border: none;
  border-top: 1px solid var(--color-rule);
  margin: var(--space-2xl) 0;
}

.rule--light {
  border-top-color: var(--color-rule-2);
}

/* Hairline divider between sections (padding handled by layout.css) */
main > section + section {
  border-top: 1px solid var(--color-rule);
}

/* --------------------------------------------------------------------------
   Minimum Tap Targets (44×44px on mobile)
   -------------------------------------------------------------------------- */
@media (max-width: 767px) {
  a,
  button,
  .btn,
  .cta-outline,
  input,
  select,
  textarea,
  [role="button"],
  summary {
    min-height: 44px;
  }

  .btn,
  .cta-outline {
    min-width: 44px;
  }

  /* Expand hit area for small interactive elements without changing visual size */
  .nav-link,
  .icon-btn {
    position: relative;
  }

  .nav-link::before,
  .icon-btn::before {
    content: "";
    position: absolute;
    inset: -8px;
  }
}

/* --------------------------------------------------------------------------
   Button Base Styles
   -------------------------------------------------------------------------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  padding: 0.7rem 1.4rem;
  border: 1px solid var(--color-ink);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
}

/* CTA Outline (primary action — quiet but visible) */
.cta-outline {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--color-ink);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 500;
  line-height: 1.4;
  color: var(--color-ink);
  background: transparent;
  cursor: pointer;
  text-decoration: none;
  min-height: 44px;
}

/* --------------------------------------------------------------------------
   Link Styles
   -------------------------------------------------------------------------- */
a {
  color: var(--color-ink);
  text-decoration-color: var(--color-rule-2);
  text-underline-offset: 0.2em;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

@media (hover: hover) {
  a:hover {
    color: var(--color-accent);
    text-decoration-color: var(--color-accent);
  }
}

/* --------------------------------------------------------------------------
   Badge / Label
   -------------------------------------------------------------------------- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 0.2rem 0.6rem;
  font-family: var(--font-body);
  font-size: var(--font-size-xs);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  border-radius: 2px;
  line-height: 1.4;
  white-space: nowrap;
  flex-shrink: 0;
}

.badge--featured {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

.badge--expired {
  background: transparent;
  color: var(--color-muted);
  border: 1px solid var(--color-rule-2);
}

.badge--placement {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

/* --------------------------------------------------------------------------
   Expand / Collapse Toggle
   -------------------------------------------------------------------------- */
.expand-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4em;
  padding: 0.7rem 1.2rem;
  border: 1px solid var(--color-rule-2);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 500;
  color: var(--color-ink);
  background: transparent;
  cursor: pointer;
  min-height: 44px;
}

@media (hover: hover) {
  .expand-btn:hover {
    border-color: var(--color-ink);
    background-color: var(--color-paper-2);
  }
}

/* --------------------------------------------------------------------------
   Card Component
   -------------------------------------------------------------------------- */
.card {
  padding: var(--space-lg);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  background: var(--color-paper-2);
}

/* --------------------------------------------------------------------------
   Role Entry (Experience Section)
   -------------------------------------------------------------------------- */
.role-entry + .role-entry {
  border-top: 1px solid var(--color-rule-2);
  padding-top: var(--space-xl);
  margin-top: var(--space-xl);
}

.role-entry__heading {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0 0 var(--space-2) 0;
  line-height: var(--leading-snug);
}

.role-entry__meta {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: 0 0 var(--space-4) 0;
  letter-spacing: 0.02em;
}

.role-entry__responsibilities {
  list-style: disc;
  padding-left: 1.25em;
  margin: 0 0 var(--space-4) 0;
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: var(--leading-relaxed);
  color: var(--color-ink-2);
}

.role-entry__responsibilities li {
  margin-bottom: var(--space-2);
}

.role-entry__responsibilities li:last-child {
  margin-bottom: 0;
}

.role-entry .chip-list {
  margin-top: var(--space-4);
}

/* --------------------------------------------------------------------------
   Certification Section
   -------------------------------------------------------------------------- */
.cert-count {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  letter-spacing: 0.04em;
  margin: 0 0 var(--space-xl) 0;
}

.cert-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.cert-entry {
  padding: var(--space-md) 0;
}

.cert-entry + .cert-entry,
.cert-hidden > .cert-entry:first-child {
  border-top: 1px solid var(--color-rule-2);
}

.cert-entry--key {
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
  background: linear-gradient(
    to right,
    color-mix(in oklab, var(--color-accent) 8%, transparent),
    transparent 40%
  );
}

.cert-entry--expired {
  color: var(--color-muted);
}

.cert-entry--expired .cert-entry__name {
  color: var(--color-muted);
}

.cert-entry__header {
  display: flex;
  align-items: baseline;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.cert-entry__name {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0;
  line-height: var(--leading-snug);
}

.cert-entry__org {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-ink-2);
  margin: 0.25rem 0 0 0;
}

.cert-entry__date {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: 0.25rem 0 0 0;
  letter-spacing: 0.02em;
}

.cert-entry__media {
  display: block;
  margin-top: var(--space-sm);
  max-width: 220px;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--color-paper-3);
  transition: border-color var(--duration-fast) var(--easing-default);
}

.cert-entry__media img {
  width: 100%;
  height: auto;
  display: block;
}

@media (hover: hover) {
  .cert-entry__media:hover {
    border-color: var(--color-accent);
  }
}

.cert-entry__verify {
  display: inline-block;
  margin-top: var(--space-sm);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
}

@media (hover: hover) {
  .cert-entry__verify:hover {
    text-decoration: underline;
    text-underline-offset: 0.2em;
  }
}

/* Hidden certifications container — hidden by default, shown via JS */
.cert-hidden {
  display: none;
}

.cert-hidden.is-visible {
  display: block;
}

/* Expand button spacing */
#certifications .expand-btn {
  margin-top: var(--space-lg);
}

/* --------------------------------------------------------------------------
   Navigation Component — N9 Edge-aligned Minimal
   -------------------------------------------------------------------------- */

/* Nav container (inside header.nav-edge) */
.nav-edge nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
}

/* Wordmark — hard-left */
.nav-wordmark {
  font-family: var(--font-display);
  font-size: var(--text-md);
  font-weight: var(--weight-semibold);
  letter-spacing: var(--tracking-wide);
  color: var(--color-ink);
  text-decoration: none;
  white-space: nowrap;
}

/* Desktop nav links — horizontal row between wordmark and CTA */
.nav-links {
  display: none;
  align-items: center;
  gap: var(--space-6);
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-link {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-regular);
  letter-spacing: var(--tracking-wide);
  color: var(--color-ink-2);
  text-decoration: none;
  padding: var(--space-2) 0;
  position: relative;
  transition: color var(--duration-fast) var(--easing-default);
}

.nav-link::after {
  content: "";
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 2px;
  background-color: var(--color-accent);
  transition: width var(--duration-fast) var(--easing-default);
}

.nav-link.is-active {
  color: var(--color-ink);
}

.nav-link.is-active::after {
  width: 100%;
}

@media (hover: hover) {
  .nav-link:hover {
    color: var(--color-ink);
  }

  .nav-link:hover::after {
    width: 100%;
  }
}

/* Desktop CTA — hard-right */
.nav-cta {
  display: none;
  font-size: var(--text-sm);
  padding: var(--space-2) var(--space-4);
  min-height: auto;
}

/* Mobile hamburger toggle */
.nav-toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
  z-index: 1001;
}

.nav-toggle__bar {
  display: block;
  width: 22px;
  height: 2px;
  background-color: var(--color-ink);
  border-radius: 1px;
  transition: transform var(--duration-normal) var(--easing-default),
              opacity var(--duration-normal) var(--easing-default);
}

/* Hamburger → X transform when open */
.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle[aria-expanded="true"] .nav-toggle__bar:nth-child(2) {
  opacity: 0;
}

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

/* Mobile dropdown overlay */
.nav-overlay {
  position: absolute;
  top: 100%;
  right: var(--space-md);
  width: 240px;
  max-width: calc(100vw - var(--space-md) * 2);
  z-index: 1000;
  background-color: var(--color-paper-2);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  padding: var(--space-2) 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity var(--duration-fast) var(--easing-default),
              visibility var(--duration-fast) var(--easing-default),
              transform var(--duration-fast) var(--easing-default);
  box-shadow: 0 10px 30px color-mix(in srgb, var(--color-ink) 10%, transparent);
}

.nav-overlay.is-open {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

.nav-overlay__links {
  display: flex;
  flex-direction: column;
  align-items: stretch;
  gap: 0;
  list-style: none;
  margin: 0;
  padding: 0;
}

.nav-overlay__link {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-medium);
  font-style: normal;
  color: var(--color-ink);
  text-decoration: none;
  padding: var(--space-3) var(--space-lg);
  min-height: 44px;
  display: flex;
  align-items: center;
  transition: background-color var(--duration-fast) var(--easing-default), color var(--duration-fast) var(--easing-default);
}

.nav-overlay__link.is-active {
  color: var(--color-accent);
  background-color: color-mix(in srgb, var(--color-accent) 8%, transparent);
}

@media (hover: hover) {
  .nav-overlay__link:hover {
    background-color: color-mix(in srgb, var(--color-accent) 15%, transparent);
    color: var(--color-accent);
  }
}

/* Desktop layout (≥768px) — show links, hide hamburger/overlay */
@media (min-width: 768px) {
  .nav-links {
    display: flex;
  }

  .nav-cta {
    display: inline-flex;
  }

  .nav-toggle {
    display: none;
  }

  .nav-overlay {
    display: none;
  }
}

/* --------------------------------------------------------------------------
   Sticky Navigation — activates after scrolling past profile
   -------------------------------------------------------------------------- */
.nav-edge {
  position: sticky;
  top: 0;
  z-index: 100;
  background-color: color-mix(in oklab, var(--color-paper) 88%, transparent);
  backdrop-filter: saturate(140%) blur(10px);
  -webkit-backdrop-filter: saturate(140%) blur(10px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--duration-fast) var(--easing-default),
              background-color var(--duration-normal) var(--easing-default);
}

.nav-edge.is-sticky {
  border-bottom-color: var(--color-rule);
}

/* --------------------------------------------------------------------------
   Theme Toggle Button
   -------------------------------------------------------------------------- */
.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  flex-shrink: 0;
  padding: 0;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--color-ink-2);
  cursor: pointer;
  transition: color var(--duration-fast) var(--easing-default),
              border-color var(--duration-fast) var(--easing-default),
              background-color var(--duration-fast) var(--easing-default);
}

.theme-toggle svg {
  width: 18px;
  height: 18px;
  display: block;
}

/* Show the icon that reflects the CURRENT theme:
   default (dark) → moon.  light → sun.
   Scoped under .theme-toggle so these beat the `.theme-toggle svg`
   sizing rule on specificity (otherwise both icons show). */
.theme-toggle .theme-toggle__sun  { display: none; }
.theme-toggle .theme-toggle__moon { display: block; }

[data-theme="light"] .theme-toggle .theme-toggle__moon { display: none; }
[data-theme="light"] .theme-toggle .theme-toggle__sun  { display: block; }

@media (hover: hover) {
  .theme-toggle:hover {
    color: var(--color-accent);
    border-color: var(--color-accent);
    background-color: var(--color-paper-2);
  }
}

/* Group right-aligned controls in the nav */
.nav-actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* --------------------------------------------------------------------------
   Reduced Motion — Navigation
   -------------------------------------------------------------------------- */
@media (prefers-reduced-motion: reduce) {
  .nav-toggle__bar {
    transition: none;
  }

  .nav-overlay {
    transition: none;
  }

  .nav-link::after {
    transition: none;
  }

  .nav-overlay__link {
    transition: none;
  }

  .nav-edge {
    transition: none;
  }
}

/* --------------------------------------------------------------------------
   Projects Section — card grid (F6 product-card-grid archetype)
   -------------------------------------------------------------------------- */
.project-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--space-lg);
  list-style: none;
  margin: 0;
  padding: 0;
}

@media (min-width: 640px) {
  .project-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

@media (min-width: 1024px) {
  .project-grid {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }
}

.project-card {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  padding: var(--space-lg);
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-md);
  background: var(--color-paper-2);
  min-width: 0;
  transition: border-color var(--duration-fast) var(--easing-default),
              transform var(--duration-fast) var(--easing-default);
}

@media (hover: hover) {
  .project-card:hover {
    border-color: var(--color-accent);
    transform: translateY(-2px);
  }
}

.project-card--featured {
  border-color: color-mix(in oklab, var(--color-accent) 45%, var(--color-rule));
}

.project-card__gallery {
  position: relative;
  margin: calc(-1 * var(--space-lg)) calc(-1 * var(--space-lg)) 0;
  border-radius: var(--radius-md) var(--radius-md) 0 0;
  overflow: hidden;
  height: 13rem;
  background-color: var(--color-paper-3);
  border-bottom: 1px solid var(--color-rule);
}

/* Horizontal track of slides; JS shifts it by transform. */
.project-card__track {
  display: flex;
  height: 100%;
  transition: transform var(--duration-normal) var(--easing-default);
}

.project-card__slide {
  position: relative;
  flex: 0 0 100%;
  height: 100%;
  background-size: cover;
  background-position: center;
  overflow: hidden;
}

/* Blurred, darkened fill so portrait screenshots and landscape covers both
   sit cleanly in the frame without being cropped awkwardly. */
.project-card__slide::before {
  content: "";
  position: absolute;
  inset: 0;
  background: inherit;
  background-size: cover;
  background-position: center;
  filter: blur(22px) brightness(0.55) saturate(1.1);
  transform: scale(1.2);
}

.project-card__slide img {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100%;
  object-fit: contain;
  display: block;
}

/* Zoomable image affordance. */
.project-card__slide img[data-zoomable] { cursor: zoom-in; }
.project-card__slide img[data-zoomable]:focus-visible {
  outline: 2px solid var(--color-focus);
  outline-offset: -2px;
}

/* Arrows live in a full-height flex overlay so they stay vertically centered
   regardless of the contained image's intrinsic size (no more shifting). */
.project-card__arrows {
  position: absolute;
  inset: 0;
  z-index: 2;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 var(--space-2);
  pointer-events: none;
}

.project-card__nav {
  pointer-events: auto;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2rem;
  height: 2rem;
  flex-shrink: 0;
  padding: 0;
  border: none;
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-paper) 70%, transparent);
  color: var(--color-ink);
  font-size: 1.25rem;
  line-height: 1;
  cursor: pointer;
  opacity: 0;
  transition: opacity var(--duration-fast) var(--easing-default),
              background-color var(--duration-fast) var(--easing-default);
}
.project-card__nav:hover { background: var(--color-accent); color: var(--color-accent-ink); }
.project-card__nav:focus-visible { opacity: 1; outline: 2px solid var(--color-focus); outline-offset: 2px; }

/* Reveal arrows on hover (and always on touch where hover is absent). */
@media (hover: hover) {
  .project-card__gallery:hover .project-card__nav { opacity: 1; }
}
@media (hover: none) {
  .project-card__nav { opacity: 1; background: color-mix(in oklab, var(--color-paper) 55%, transparent); }
}

/* Dot indicators. */
.project-card__dots {
  position: absolute;
  bottom: var(--space-2);
  left: 0;
  right: 0;
  z-index: 2;
  display: flex;
  justify-content: center;
  align-items: center;
  gap: var(--space-2);
}
.project-card__dot {
  position: relative;
  appearance: none;
  -webkit-appearance: none;
  flex: 0 0 auto;
  width: 0.5rem;
  height: 0.5rem;
  min-height: 0.5rem;
  min-width: 0.5rem;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: color-mix(in oklab, var(--color-paper) 40%, var(--color-ink-2));
  opacity: 0.6;
  cursor: pointer;
  transition: opacity var(--duration-fast) var(--easing-default),
              background-color var(--duration-fast) var(--easing-default),
              transform var(--duration-fast) var(--easing-default);
}
/* Ensure the touch target remains 44px despite the small visual size */
.project-card__dot::after {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: 44px;
  height: 44px;
  transform: translate(-50%, -50%);
}
.project-card__dot.is-active {
  background: var(--color-accent);
  opacity: 1;
  transform: scale(1.3);
}
.project-card__dot:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

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

/* --------------------------------------------------------------------------
   Lightbox — full-screen image viewer for project previews
   -------------------------------------------------------------------------- */
.lightbox {
  position: fixed;
  inset: 0;
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
  background: color-mix(in oklab, var(--color-paper) 22%, rgba(0, 0, 0, 0.88));
  backdrop-filter: blur(4px);
  -webkit-backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--duration-fast) var(--easing-default);
  cursor: zoom-out;
}
.lightbox.is-open { opacity: 1; }
.lightbox[hidden] { display: none; }

.lightbox__img {
  max-width: min(92vw, 1100px);
  max-height: 88vh;
  width: auto;
  height: auto;
  object-fit: contain;
  border-radius: var(--radius-sm);
  box-shadow: 0 24px 80px rgba(0, 0, 0, 0.6);
  cursor: default;
  transform: scale(0.98);
  transition: transform var(--duration-fast) var(--easing-default);
}
.lightbox.is-open .lightbox__img { transform: scale(1); }

.lightbox__close {
  position: absolute;
  top: var(--space-4);
  right: var(--space-4);
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.75rem;
  height: 2.75rem;
  border: 1px solid var(--color-rule);
  border-radius: var(--radius-full);
  background: color-mix(in oklab, var(--color-paper) 80%, transparent);
  color: var(--color-ink);
  font-size: 1.6rem;
  line-height: 1;
  cursor: pointer;
  transition: background-color var(--duration-fast) var(--easing-default),
              border-color var(--duration-fast) var(--easing-default),
              color var(--duration-fast) var(--easing-default);
}
.lightbox__close:hover { background: var(--color-accent); border-color: var(--color-accent); color: var(--color-accent-ink); }
.lightbox__close:focus-visible { outline: 2px solid var(--color-focus); outline-offset: 2px; }

@media (prefers-reduced-motion: reduce) {
  .lightbox, .lightbox__img { transition: none; }
}

.project-card__head {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: var(--space-2);
}

.project-card__title {
  font-family: var(--font-display);
  font-style: italic;
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0;
  line-height: var(--leading-snug);
  overflow-wrap: anywhere;
}

.project-card__role {
  font-family: var(--font-mono);
  font-size: var(--font-size-xs);
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-accent);
  margin: 0;
}

.project-card__desc {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  line-height: var(--leading-relaxed);
  color: var(--color-ink-2);
  margin: 0;
  flex: 1;
}

.project-card .chip-list {
  margin-top: auto;
}

.project-card .chip {
  font-size: var(--text-xs);
  padding: 0.3rem 0.65rem;
}

.project-card__link {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: var(--weight-medium);
  color: var(--color-accent);
  text-decoration: none;
  margin-top: var(--space-1);
}

@media (hover: hover) {
  .project-card__link:hover {
    text-decoration: underline;
    text-underline-offset: 0.2em;
  }
}

.project-more {
  margin-top: var(--space-xl);
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
}

.project-more a {
  color: var(--color-accent);
  font-weight: var(--weight-medium);
}

/* --------------------------------------------------------------------------
   Skills Section
   -------------------------------------------------------------------------- */
.skills-categories {
  display: flex;
  flex-direction: column;
  gap: var(--space-xl);
}

.skill-category__heading {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-ink-2);
  margin: 0 0 var(--space-md) 0;
}

/* Featured category (Mobile Development): 1.25× heading size + accent chip borders */
.skill-category__heading--featured {
  font-size: calc(var(--font-size-base) * 1.25);
  color: var(--color-ink);
}

/* --------------------------------------------------------------------------
   Education Section
   -------------------------------------------------------------------------- */
.edu-degree {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0 0 var(--space-2) 0;
  line-height: var(--leading-snug);
}

.edu-institution {
  font-family: var(--font-body);
  font-size: var(--font-size-base);
  font-weight: var(--weight-regular);
  color: var(--color-ink-2);
  margin: 0 0 var(--space-3) 0;
  line-height: var(--leading-relaxed);
}

.edu-meta {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: 0 0 var(--space-3) 0;
  letter-spacing: 0.02em;
}

.edu-note {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-ink-2);
  margin: 0;
}

.edu-card .edu-meta:last-child,
.edu-card .edu-note:last-child { margin-bottom: 0; }

/* Multiple schools stack as cards */
.edu-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-4);
}

/* Scholarships / academic honors, surfaced from academic-category awards */
.edu-scholarships {
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
  border-top: 1px solid var(--color-rule);
}

.edu-scholarships__heading {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-4) 0;
}

.edu-scholarships__list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
}

.edu-scholarship {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  border-left: 3px solid var(--color-accent);
  padding-left: var(--space-md);
}

.edu-scholarship__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
}

.edu-scholarship__meta {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-ink-2);
}

/* --------------------------------------------------------------------------
   Organization Entry
   -------------------------------------------------------------------------- */
.org-list {
  display: flex;
  flex-direction: column;
  gap: 0;
}

.org-entry {
  padding: var(--space-lg) 0;
}

.org-entry + .org-entry {
  border-top: 1px solid var(--color-rule-2);
}

.org-entry:first-child {
  padding-top: 0;
}

.org-entry__role {
  font-family: var(--font-body);
  font-size: var(--text-lg);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0 0 var(--space-2) 0;
  line-height: var(--leading-snug);
}

.org-entry__org {
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-ink-2);
  margin: 0 0 var(--space-2) 0;
  line-height: var(--leading-relaxed);
}

.org-entry__date {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  color: var(--color-muted);
  margin: 0;
  letter-spacing: 0.02em;
}

/* --------------------------------------------------------------------------
   Contact Section
   -------------------------------------------------------------------------- */
.contact-links {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: var(--space-lg);
  list-style: none;
  padding: 0;
  margin: 0;
}

.contact-link {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-lg);
  border: 1px solid var(--color-rule-2);
  border-radius: var(--radius-md);
  background: var(--color-paper-2);
  transition: all var(--duration-fast) var(--easing-default);
  text-decoration: none;
}

.contact-link:hover {
  border-color: var(--color-accent);
  transform: translateY(-2px);
}

.contact-link__icon {
  width: 2.75rem;
  height: 2.75rem;
  display: flex;
  align-items: center;
  justify-content: center;
  border-radius: var(--radius-sm);
  background: var(--color-paper-3);
  color: var(--color-ink);
  transition: color var(--duration-fast) ease, background var(--duration-fast) ease;
}

.contact-link__icon svg {
  width: 1.25rem;
  height: 1.25rem;
}

.contact-link:hover .contact-link__icon {
  color: var(--color-accent);
  background: color-mix(in srgb, var(--color-accent) 15%, transparent);
}

.contact-link__content {
  display: flex;
  flex-direction: column;
  gap: 0.15rem;
  overflow: hidden;
}

.contact-link__label {
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
}

.contact-link__value {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-regular);
  color: var(--color-ink);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   Visually Hidden (screen reader only)
   -------------------------------------------------------------------------- */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* --------------------------------------------------------------------------
   Skip to Content Link
   Visually hidden until focused — first focusable element on the page.
   -------------------------------------------------------------------------- */
.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-4, 1rem);
  z-index: 10000;
  padding: 0.75rem 1.25rem;
  background-color: var(--color-paper);
  color: var(--color-ink);
  border: 2px solid var(--color-focus);
  border-radius: 2px;
  font-family: var(--font-body);
  font-size: var(--font-size-sm);
  font-weight: 600;
  text-decoration: none;
  white-space: nowrap;
  transition: top 0ms;
}

.skip-link:focus {
  top: var(--space-4, 1rem);
  outline: 2px solid var(--color-focus);
  outline-offset: 2px;
}

/* --------------------------------------------------------------------------
   Awards Section
   -------------------------------------------------------------------------- */
.awards-group {
  margin-bottom: var(--space-8);
}

.awards-group:last-of-type {
  margin-bottom: var(--space-6);
}

.awards-group__heading {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--color-muted);
  margin: 0 0 var(--space-4) 0;
}

.awards-list {
  list-style: none;
  padding: 0;
  margin: 0;
  counter-reset: award;
}

.award-entry {
  display: grid;
  grid-template-columns: 3.5rem 1fr;
  gap: var(--space-4);
  align-items: start;
  padding: var(--space-4) 0;
}

.award-entry + .award-entry {
  border-top: 1px solid var(--color-rule-2);
}

.award-entry__year {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  font-weight: var(--weight-medium);
  color: var(--color-muted);
  letter-spacing: 0.04em;
  padding-top: 0.15em;
}

.award-entry__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.award-entry__title {
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: var(--weight-semibold);
  color: var(--color-ink);
  margin: 0;
  line-height: var(--leading-snug);
}

.award-entry__event {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-ink-2);
  margin: 0;
  line-height: var(--leading-relaxed);
}

.award-entry__placement {
  font-family: var(--font-body);
  font-size: var(--text-xs);
  font-weight: 500;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  color: var(--color-muted);
}

/* 1st place entries: accent-colored badge */
.award-entry--first .badge--placement {
  background: var(--color-accent);
  color: var(--color-accent-ink);
}

/* Show more button */
.awards-show-more {
  margin-top: var(--space-4);
}

/* Hide empty category groups */
.awards-group:empty,
.awards-group[hidden] {
  display: none;
}

/* --------------------------------------------------------------------------
   Footer — Ft6 Letter Close
   Closes the page like a personal note. Warm, intimate, editorial.
   -------------------------------------------------------------------------- */
.foot-letter {
  max-width: var(--content-max);
  margin-inline: auto;
  padding-block: var(--space-3xl) var(--space-2xl);
  border-top: 1px solid var(--color-rule);
}

.foot-letter__close {
  font-family: var(--font-display);
  font-style: italic;
  font-size: clamp(1.5rem, 1.2rem + 1.5vw, 2.25rem);
  line-height: var(--leading-snug);
  color: var(--color-ink-2);
  margin: 0;
  max-width: 24ch;
}

.foot-letter__sign {
  display: inline-block;
  margin-top: var(--space-2);
  font-family: var(--font-display);
  font-style: italic;
  font-weight: var(--weight-semibold);
  color: var(--color-accent);
}