/* Spec: design.md */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
  text-size-adjust: 100%;
  overflow-x: clip;
}

body {
  margin: 0;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.65;
  color: var(--text-primary);
  background: var(--bg-deep);
  overflow-x: clip;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

ul {
  padding-left: 1.25rem;
}

[id] {
  scroll-margin-top: var(--scroll-offset);
}

.container {
  width: 100%;
  max-width: var(--content-max);
  margin-inline: auto;
  min-width: 0;
}

.skip-link {
  position: absolute;
  top: -100%;
  left: var(--space-2);
  z-index: 1000;
  padding: var(--space-1) var(--space-2);
  background: var(--accent);
  color: var(--text-on-accent);
  border-radius: var(--radius-sm);
  font-weight: 600;
}

.skip-link:focus {
  top: max(var(--space-2), env(safe-area-inset-top));
}

.bg-mesh {
  position: fixed;
  inset: 0;
  z-index: -2;
  background: var(--bg-deep);
  pointer-events: none;
}

.layout {
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: clip;
}

.main {
  flex: 1;
  width: 100%;
  max-width: 100%;
  min-width: 0;
  padding-bottom: env(safe-area-inset-bottom, 0px);
}

.section {
  padding-block: var(--section-padding-block);
  padding-inline: max(var(--space-2), env(safe-area-inset-left))
    max(var(--space-2), env(safe-area-inset-right));
}

.section--intro {
  padding-top: calc(
    var(--nav-height) + env(safe-area-inset-top) + var(--section-intro-extra)
  );
}

.section__title {
  font-size: var(--text-3xl);
  font-weight: 600;
  margin: 0 0 var(--section-title-gap);
  letter-spacing: -0.02em;
}

.about__body {
  width: 100%;
  max-width: none;
  color: var(--text-muted);
  line-height: 1.7;
}

.glass-card,
.timeline__item,
.skill-card,
.lead-grid .glass-card,
.section__title,
.timeline__item h3,
.lead-grid h3 {
  overflow-wrap: break-word;
}

.about__body p {
  margin: 0;
}

.about__body p + p {
  margin-top: var(--space-2);
}

.section__note {
  margin-top: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-sm);
}

/* Nav */
.site-nav {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  width: 100%;
  max-width: 100%;
  padding-top: env(safe-area-inset-top, 0px);
  padding-left: env(safe-area-inset-left, 0px);
  padding-right: env(safe-area-inset-right, 0px);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--glass-border);
}

.site-nav__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--space-1);
  min-width: 0;
  min-height: var(--nav-height);
  padding-inline: var(--space-2);
}

.site-nav__logo {
  flex: 0 1 auto;
  min-width: 0;
  font-family: var(--font-sans);
  font-weight: 600;
  font-size: var(--text-base);
  line-height: 1.3;
  color: #000000;
  text-decoration: none;
  white-space: nowrap;
}

.site-nav__logo:hover {
  color: #000000;
  text-decoration: none;
}

.site-nav__toggle {
  display: flex;
  flex-direction: column;
  justify-content: center;
  gap: 5px;
  width: 44px;
  height: 44px;
  padding: 0;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-md);
  background: transparent;
  cursor: pointer;
}

.site-nav__toggle span {
  display: block;
  width: 20px;
  height: 2px;
  margin-inline: auto;
  background: var(--text-primary);
  transition: var(--transition-fast);
}

.site-nav__menu {
  position: fixed;
  top: calc(var(--nav-height) + env(safe-area-inset-top, 0px));
  right: 0;
  bottom: 0;
  left: 0;
  padding: var(--space-4);
  padding-inline: max(var(--space-4), env(safe-area-inset-left, 0px))
    max(var(--space-4), env(safe-area-inset-right, 0px));
  padding-bottom: max(var(--space-4), env(safe-area-inset-bottom, 0px));
  background: var(--bg-deep);
  transform: translateX(100%);
  transition: transform var(--transition-base);
  overflow-x: hidden;
  overflow-y: auto;
  overscroll-behavior: contain;
  -webkit-overflow-scrolling: touch;
}

.site-nav__menu.is-open {
  transform: translateX(0);
}

.site-nav__menu ul {
  list-style: none;
  margin: 0;
  padding: 0;
}

.site-nav__menu a {
  display: block;
  padding: var(--space-2);
  color: var(--text-muted);
  font-size: var(--text-lg);
  text-decoration: none;
  transition: color var(--transition-base);
}

.site-nav__menu a:hover {
  color: var(--text-primary);
}

.site-nav__menu a.is-active {
  color: #000000;
  font-weight: 600;
}

.site-nav__menu a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

/* Glass card */
.glass-card {
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-3);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-smooth),
    box-shadow var(--transition-smooth),
    border-color var(--transition-base);
}

.glass-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
}

.glass-card p + p {
  margin-top: var(--space-2);
}

/* Timeline */
.timeline {
  --timeline-line: 2px;
  --timeline-dot: 12px;
  --timeline-item-border: 3px;
  --timeline-gap: var(--space-3);
  --timeline-axis: calc(
    var(--space-4) + var(--timeline-item-border) + var(--timeline-line) / 2
  );
  list-style: none;
  margin: 0;
  padding: 0 0 0
    calc(var(--timeline-axis) + var(--timeline-dot) / 2 + var(--timeline-gap));
  position: relative;
  border-left: none;
}

.timeline::before {
  content: "";
  position: absolute;
  left: var(--timeline-axis);
  top: 0;
  bottom: 0;
  width: var(--timeline-line);
  background: var(--glass-border);
  transform: translateX(-50%);
}

.timeline__item {
  position: relative;
  margin-bottom: var(--space-2);
  padding: var(--space-3);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-left: var(--timeline-item-border) solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
}

.timeline__item::before {
  content: "";
  position: absolute;
  left: calc(
    -1 * var(--timeline-dot) / 2 - var(--timeline-item-border) -
      var(--timeline-gap)
  );
  top: var(--space-4);
  width: var(--timeline-dot);
  height: var(--timeline-dot);
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 12px color-mix(in srgb, var(--accent) 55%, transparent);
  transform: translateX(-50%);
  box-sizing: border-box;
}

.timeline__item time {
  display: block;
  margin-bottom: var(--space-2);
}

.timeline__item h3 {
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
  line-height: 1.4;
}

.card__subheading {
  margin: 0 0 var(--space-2);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--accent);
}

.card__meta {
  margin: 0 0 var(--space-1);
  font-size: var(--text-base);
  font-weight: 500;
  color: var(--text-muted);
}

.timeline__item ul {
  margin: 0;
  color: var(--text-muted);
}

/* Projects */
.project-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
  min-width: 0;
}

.project-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  padding: var(--space-4);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-top: 3px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth),
    border-color var(--transition-base);
  cursor: pointer;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-card), var(--shadow-glow-cyan);
  border-color: color-mix(in srgb, var(--accent) 35%, var(--glass-border));
  text-decoration: none;
}

.project-card:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
}

.project-card__icon {
  width: 4.5rem;
  height: 4.5rem;
  border-radius: 22%;
  object-fit: cover;
  box-shadow: 0 8px 24px rgba(30, 41, 59, 0.12);
}

.project-card__title {
  margin: var(--space-2) 0 0;
  font-size: var(--text-base);
  font-weight: 600;
  line-height: 1.35;
  color: var(--text-primary);
}

.project-card:hover .project-card__title {
  color: var(--accent);
}

/* Leadership */
.lead-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
  min-width: 0;
}

.lead-grid .glass-card {
  border-left: 3px solid var(--accent);
}

.lead-grid h3 {
  margin: 0 0 var(--space-1);
  font-size: var(--text-lg);
  line-height: 1.4;
}

.lead-grid time {
  display: block;
  margin-bottom: var(--space-1);
}

.timeline__item time,
.lead-grid time,
.carousel__caption-role {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-period);
}

.lead-grid ul {
  margin: 0;
  padding-left: 1.25rem;
  color: var(--text-muted);
}

.lead-grid li + li {
  margin-top: 0.35rem;
}

/* Carousel */
.carousel {
  position: relative;
  width: 100%;
  max-width: 56rem;
  margin-inline: auto;
  padding: var(--space-2);
  min-width: 0;
  border-radius: var(--radius-xl);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  box-shadow: var(--shadow-card);
}

.carousel:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 4px;
}

.carousel__stage {
  position: relative;
}

.carousel__viewport {
  position: relative;
  width: 100%;
  aspect-ratio: 16 / 9;
  max-height: min(72vh, 34rem);
  border-radius: var(--radius-md);
  overflow: hidden;
  background: var(--bg-elevated);
}

.carousel__track {
  display: flex;
  height: 100%;
  transition: transform var(--transition-smooth);
  will-change: transform;
}

.carousel__slide {
  flex: 0 0 100%;
  min-width: 0;
  margin: 0;
  height: 100%;
}

.carousel__slide img {
  display: block;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
}

.carousel__btn {
  position: absolute;
  top: 50%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  margin: 0;
  border: 1px solid var(--glass-border);
  border-radius: 50%;
  background: rgba(255, 255, 255, 0.92);
  color: var(--text-primary);
  font: inherit;
  line-height: 0;
  cursor: pointer;
  z-index: 3;
  box-shadow: var(--shadow-card);
  -webkit-tap-highlight-color: transparent;
  opacity: 0;
  visibility: hidden;
  pointer-events: none;
  transform: translateY(-50%) scale(0.9);
  transition: opacity 0.4s var(--ease-smooth),
    transform 0.4s var(--ease-smooth),
    visibility 0.4s var(--ease-smooth),
    border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.carousel__viewport:hover ~ .carousel__btn,
.carousel__btn:hover,
.carousel__btn:focus-visible {
  opacity: 1;
  visibility: visible;
  pointer-events: auto;
  transform: translateY(-50%) scale(1);
}

.carousel__btn:hover {
  border-color: var(--accent);
  box-shadow: var(--shadow-glow-cyan);
}

@media (hover: none) {
  .carousel__btn {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(-50%);
  }
}

.carousel__btn--prev {
  left: var(--space-2);
}

.carousel__btn--next {
  right: var(--space-2);
}

.carousel__btn-icon {
  display: block;
  width: 1.25rem;
  height: 1.25rem;
  flex-shrink: 0;
}

.carousel__captions {
  position: relative;
  min-height: 3.5rem;
  margin-top: var(--space-2);
  text-align: center;
}

.carousel__caption {
  position: absolute;
  inset: 0;
  margin: 0;
  opacity: 0;
  transform: translateX(1rem);
  transition: opacity var(--transition-smooth), transform var(--transition-smooth);
  pointer-events: none;
}

.carousel__caption.is-active {
  position: relative;
  opacity: 1;
  transform: translateX(0);
  pointer-events: auto;
}

.carousel__caption-title {
  margin: 0 auto;
  max-width: 40rem;
  font-size: var(--text-sm);
  font-weight: 600;
  line-height: 1.45;
  color: var(--text-primary);
}

@media (min-width: 768px) {
  .carousel__caption-title {
    font-size: var(--text-base);
  }
}

.carousel__caption .card__subheading {
  margin: 0.2rem 0 0.35rem;
  font-size: var(--text-sm);
}

.carousel__caption .card__meta {
  margin: 0.15rem 0 0;
  font-size: var(--text-sm);
}

.carousel__caption-role {
  margin: 0.25rem 0 0;
}

.carousel__dots {
  display: flex;
  justify-content: center;
  gap: var(--space-1);
  margin-top: var(--space-2);
  padding-bottom: env(safe-area-inset-bottom);
}

.carousel__dots button {
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  background: transparent;
  cursor: pointer;
  position: relative;
}

.carousel__dots button::after {
  content: "";
  position: absolute;
  inset: 50%;
  width: 10px;
  height: 10px;
  margin: -5px 0 0 -5px;
  border-radius: 50%;
  background: var(--text-muted);
  opacity: 0.4;
  transition: var(--transition-fast);
}

.carousel__dots button[aria-selected="true"]::after {
  background: var(--accent);
  opacity: 1;
  transform: scale(1.2);
}

/* Skills grid */
.skills-grid {
  display: grid;
  gap: var(--space-2);
  grid-template-columns: 1fr;
  align-items: stretch;
  min-width: 0;
}

.skill-card {
  display: flex;
  flex-direction: column;
  height: 100%;
  padding: var(--space-3);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-left: 4px solid var(--accent);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-card);
  transition: transform var(--transition-smooth), box-shadow var(--transition-smooth);
}

.skill-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-card),
    0 0 0 1px color-mix(in srgb, var(--accent) 25%, transparent);
}

.skill-card h3 {
  margin: 0 0 var(--space-2);
  font-size: var(--text-lg);
  color: var(--text-primary);
}

.skill-chips {
  display: flex;
  flex: 1;
  flex-wrap: wrap;
  gap: 0.4rem;
  align-content: flex-start;
}

.skill-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.6rem;
  font-size: var(--text-sm);
  background: var(--surface-muted);
  border: 1px solid var(--glass-border);
  border-radius: 999px;
  transition: border-color var(--transition-base),
    box-shadow var(--transition-base);
}

.skill-chip i {
  font-size: 1.125rem;
}

.skill-chip__icon {
  width: 1.125rem;
  height: 1.125rem;
  flex-shrink: 0;
}

.skill-chip:hover {
  border-color: var(--accent);
  box-shadow: 0 0 0 2px color-mix(in srgb, var(--accent) 18%, transparent);
}

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

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

/* Contact dialog */
.contact-dialog {
  width: min(
    22rem,
    calc(
      100% - var(--space-4) - env(safe-area-inset-left, 0px) -
        env(safe-area-inset-right, 0px)
    )
  );
  max-height: calc(100dvh - var(--space-4) - env(safe-area-inset-top, 0px));
  max-height: calc(
    100vh - var(--space-4) - env(safe-area-inset-top, 0px)
  );
  margin: auto;
  padding: 0;
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  background: var(--bg-deep);
  box-shadow: var(--shadow-card);
  overflow: visible;
}

.contact-dialog::backdrop {
  background: rgba(30, 41, 59, 0.45);
  backdrop-filter: blur(4px);
}

.contact-dialog__inner {
  position: relative;
  padding: var(--space-3);
  padding-bottom: max(var(--space-3), env(safe-area-inset-bottom));
}

.contact-dialog__close {
  position: absolute;
  top: var(--space-2);
  right: var(--space-2);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  padding: 0;
  border: none;
  border-radius: 50%;
  background: transparent;
  color: var(--text-muted);
  cursor: pointer;
  transition: color var(--transition-base), background var(--transition-base);
}

.contact-dialog__close:hover {
  color: var(--text-primary);
  background: var(--surface-muted);
}

.contact-dialog__close:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
}

.contact-dialog__title {
  margin: 0 2.75rem var(--space-2) 0;
  font-size: var(--text-xl);
  font-weight: 600;
}

.contact-dialog__list {
  list-style: none;
  margin: 0;
  padding: 0;
}

.contact-dialog__list li + li {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--glass-border);
}

.contact-dialog__label {
  display: block;
  margin-bottom: 0.2rem;
  font-size: var(--text-xs);
  font-weight: 500;
  color: var(--text-muted);
}

.contact-dialog__value {
  font-size: var(--text-base);
  color: var(--text-primary);
  text-decoration: none;
  word-break: break-word;
}

a.contact-dialog__value {
  color: var(--accent);
}

a.contact-dialog__value:hover {
  text-decoration: underline;
}

body.has-dialog-open {
  overflow: hidden;
}

@media (prefers-reduced-motion: no-preference) {
  .contact-dialog[open] {
    animation: contact-dialog-in 0.35s var(--ease-smooth);
  }

  .contact-dialog[open]::backdrop {
    animation: contact-backdrop-in 0.35s var(--ease-smooth);
  }
}

@keyframes contact-dialog-in {
  from {
    opacity: 0;
    transform: scale(0.96) translateY(8px);
  }
  to {
    opacity: 1;
    transform: scale(1) translateY(0);
  }
}

@keyframes contact-backdrop-in {
  from {
    opacity: 0;
  }
  to {
    opacity: 1;
  }
}

/* Site footer (contact) */
.site-footer {
  margin-top: auto;
  border-top: 1px solid var(--glass-border);
  padding-block: var(--space-3);
  padding-inline: max(var(--space-2), env(safe-area-inset-left))
    max(var(--space-2), env(safe-area-inset-right));
  padding-bottom: max(var(--space-4), env(safe-area-inset-bottom));
  background: var(--bg-deep);
}

.site-footer__inner {
  min-width: 0;
  text-align: center;
}

.site-footer__row {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: center;
  gap: 0.35rem 0.5rem;
  margin: 0;
  font-size: var(--text-sm);
  line-height: 1.5;
  overflow-wrap: anywhere;
}

.site-footer__name {
  font-weight: 600;
  color: var(--text-primary);
}

.site-footer__sep {
  color: var(--text-muted);
  user-select: none;
}

.site-footer a {
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  color: var(--text-muted);
  text-decoration: none;
  overflow-wrap: anywhere;
  transition: color var(--transition-base);
}

.site-footer a:hover {
  color: var(--accent);
  text-decoration: none;
}

.site-footer a:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: var(--radius-sm);
}

/* Desktop layout */
@media (min-width: 768px) {
  .project-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

@media (min-width: 1024px) {
  .site-nav__toggle {
    display: none;
  }

  .site-nav__inner {
    gap: var(--space-2);
  }

  .site-nav__menu {
    position: static;
    flex: 1;
    display: flex;
    justify-content: flex-end;
    transform: none;
    padding: 0;
    background: transparent;
    overflow: visible;
  }

  .site-nav__menu ul {
    display: flex;
    flex-wrap: wrap;
    align-items: center;
    justify-content: flex-end;
    gap: 0.125rem;
  }

  .site-nav__menu a {
    font-size: var(--text-sm);
    padding: 0.5rem 0.65rem;
  }
}

@media (prefers-reduced-motion: reduce) {
  html {
    scroll-behavior: auto;
  }

  .carousel__track,
  .carousel__caption,
  .carousel__btn {
    transition: none;
  }

  .carousel__btn {
    opacity: 1;
    visibility: visible;
    pointer-events: auto;
    transform: translateY(-50%);
  }

  .glass-card:hover,
  .project-card:hover,
  .skill-card:hover {
    transform: none;
  }

  .skill-chip:hover {
    box-shadow: none;
  }
}