@import "/assets/css/style.css";

/* ==========================================================================
   About Page — Modern Portfolio Layout
   All tokens from /assets/css/base.css. No hardcoded values.
   ========================================================================== */

/* Override root body — this is a scrolling portfolio page, not a single-page app */
body {
  overflow: auto;
  height: auto;
  min-height: 100dvh;
}

:root {
  --section-gap: 80px;
  --timeline-line: 2px;
}

html {
  scroll-behavior: smooth;
}

/* --------------------------------------------------------------------------
   Shared Section Spacing
   -------------------------------------------------------------------------- */

.section {
  padding: var(--section-gap) 0;
}

.section-title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.021em;
  line-height: 1.14286;
  margin: 0 0 var(--space-xl);
}

/* Section background alternation */
.experience {
  border-top: 1px solid var(--color-border);
}

.languages {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
}

/* --------------------------------------------------------------------------
   Hero
   -------------------------------------------------------------------------- */

.about-hero {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  position: relative;
  overflow: hidden;
}

.about-hero::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
}

.about-hero-grid {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: var(--space-2xl);
  align-items: center;
}

.about-hero-img {
  width: 220px;
  height: 220px;
  border-radius: 50%;
  object-fit: cover;
  box-shadow: var(--shadow-lg);
  border: 3px solid var(--color-border);
  transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.about-hero-img:hover {
  transform: scale(1.03);
  box-shadow: var(--shadow-lg);
}

.back-link {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  text-decoration: none;
  margin-bottom: var(--space-sm);
  transition: color 0.2s ease;
}

.back-link:hover {
  color: var(--color-accent);
}

.about-hero-text h1 {
  font-size: clamp(32px, 5vw, 48px);
  font-weight: 700;
  letter-spacing: -0.005em;
  line-height: 1.07143;
  margin: 0 0 8px;
}

.about-hero-text .role {
  font-size: var(--text-lg);
  font-weight: 400;
  letter-spacing: -0.021em;
  line-height: 1.3;
  margin: 0 0 6px;
  color: var(--color-text);
}

.about-hero-text .tagline {
  font-size: var(--text-base);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0 0 var(--space-md);
  max-width: 520px;
}

.about-hero-text .location {
  font-size: var(--text-sm);
  color: var(--color-accent);
  font-weight: 500;
  margin: 0 0 var(--space-lg);
  display: flex;
  align-items: center;
  gap: var(--space-xs);
}

/* Stats Row */

.stats-row {
  display: flex;
  gap: var(--space-lg);
  flex-wrap: wrap;
}

.stat-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  padding: var(--space-md) var(--space-lg);
  background: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  min-width: 100px;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.stat-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.stat-card__number {
  font-size: var(--text-2xl);
  font-weight: 700;
  letter-spacing: -0.005em;
  color: var(--color-accent);
  line-height: 1.1;
}

.stat-card__label {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-top: var(--space-xs);
}

/* --------------------------------------------------------------------------
   Sticky Navigation
   -------------------------------------------------------------------------- */

.sticky-nav {
  position: sticky;
  top: 0;
  z-index: 1000;
  background: var(--color-bg);
  border-bottom: var(--border-width) solid var(--color-border);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  transition: box-shadow 0.2s ease;
}

.sticky-nav--scrolled {
  box-shadow: var(--shadow-sm);
}

.sticky-nav__list {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  list-style: none;
  padding: 0;
  margin: 0;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  scrollbar-width: none;
}

.sticky-nav__list::-webkit-scrollbar {
  display: none;
}

.sticky-nav__link {
  display: inline-flex;
  align-items: center;
  padding: var(--space-sm) var(--space-md);
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-secondary);
  text-decoration: none;
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
  transition: color 0.2s ease, background 0.2s ease;
  position: relative;
}

.sticky-nav__link:hover {
  color: var(--color-text);
  background: var(--color-surface);
}

.sticky-nav__link--active {
  color: var(--color-accent);
}

.sticky-nav__link--active::after {
  content: "";
  position: absolute;
  bottom: 0;
  left: var(--space-md);
  right: var(--space-md);
  height: 2px;
  background: var(--color-accent);
  border-radius: 1px;
}

/* --------------------------------------------------------------------------
   Summary
   -------------------------------------------------------------------------- */

.summary-text {
  font-size: var(--text-base);
  line-height: 1.7;
  letter-spacing: -0.021em;
  max-width: 720px;
  margin: 0 0 var(--space-lg);
}

.summary-text p {
  margin: 0 0 1.2em;
}

.summary-text p:last-child {
  margin-bottom: 0;
}

.highlight-box {
  background: var(--color-surface);
  border-left: 3px solid var(--color-accent);
  border-radius: 0 var(--border-radius-md) var(--border-radius-md) 0;
  padding: var(--space-lg);
  margin-top: var(--space-lg);
  max-width: 720px;
}

.highlight-box__quote {
  font-size: var(--text-lg);
  font-weight: 500;
  letter-spacing: -0.021em;
  line-height: 1.4;
  color: var(--color-text);
  margin: 0;
  font-style: italic;
}

.highlight-box__quote::before {
  content: "\201C";
  color: var(--color-accent);
  font-size: 1.4em;
  line-height: 0;
  vertical-align: -0.15em;
  margin-right: 2px;
}

/* --------------------------------------------------------------------------
   Skills — Bar Chart Style
   -------------------------------------------------------------------------- */

.skills {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.skills-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl) var(--space-3xl);
}

.skills-group__title {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.021em;
  margin: 0 0 var(--space-md);
  color: var(--color-text);
  padding-bottom: var(--space-sm);
  border-bottom: var(--border-width) solid var(--color-border);
}

.skill-bar {
  margin-bottom: var(--space-md);
}

.skill-bar:last-child {
  margin-bottom: 0;
}

.skill-bar__label {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  font-size: var(--text-sm);
  margin-bottom: var(--space-xs);
}

.skill-bar__name {
  font-weight: 500;
  color: var(--color-text);
}

.skill-bar__level {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.skill-bar__track {
  height: 6px;
  background: var(--color-border);
  border-radius: 3px;
  overflow: hidden;
}

.skill-bar__fill {
  height: 100%;
  border-radius: 3px;
  transition: width 1s ease 0.2s;
}

.skill-bar__fill--expert {
  width: 100%;
  background: var(--color-accent);
}

.skill-bar__fill--advanced {
  width: 75%;
  background: var(--color-accent);
  opacity: 0.7;
}

.skill-bar__fill--intermediate {
  width: 50%;
  background: var(--color-text-secondary);
}

/* --------------------------------------------------------------------------
   Experience — Vertical Timeline
   -------------------------------------------------------------------------- */

.timeline {
  position: relative;
  padding: 0;
}

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

.timeline-item {
  position: relative;
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
  margin-bottom: var(--space-2xl);
  align-items: start;
}

.timeline-item:last-child {
  margin-bottom: 0;
}

.timeline-item__dot {
  position: absolute;
  left: 50%;
  top: 20px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: var(--color-bg);
  border: 2px solid var(--color-accent);
  transform: translate(-50%, -50%);
  z-index: 2;
}

.timeline-item--current .timeline-item__dot {
  background: var(--color-accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 15%, transparent);
}

.timeline-item__card {
  background: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.timeline-item__card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-md);
}

.timeline-item--current .timeline-item__card {
  border-left: 3px solid var(--color-accent);
}

/* Left card: content on left, empty on right */
.timeline-item:nth-child(odd) .timeline-item__card {
  grid-column: 1;
}

.timeline-item:nth-child(odd) .timeline-item__spacer {
  grid-column: 2;
}

/* Right card: empty on left, content on right */
.timeline-item:nth-child(even) .timeline-item__card {
  grid-column: 2;
}

.timeline-item:nth-child(even) .timeline-item__spacer {
  grid-column: 1;
}

.timeline-item__org {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  margin-bottom: var(--space-sm);
}

.timeline-item__org-avatar {
  width: 36px;
  height: 36px;
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

.timeline-item__org-name {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.021em;
  line-height: 1.3;
}

.timeline-item__role {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-sm);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.timeline-item__date {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  background: var(--color-surface);
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  white-space: nowrap;
}

.timeline-item__details {
  padding-left: var(--space-lg);
  margin: 0;
}

.timeline-item__details li {
  font-size: var(--text-sm);
  line-height: 1.6;
  letter-spacing: -0.022em;
  margin-bottom: var(--space-xs);
  color: var(--color-text-secondary);
}

.timeline-item__details li:last-child {
  margin-bottom: 0;
}

/* --------------------------------------------------------------------------
   Projects
   -------------------------------------------------------------------------- */

.projects {
  border-top: 1px solid var(--color-border);
}

.projects-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-lg);
}

.project-card {
  display: flex;
  flex-direction: column;
  text-decoration: none;
  color: var(--color-text);
  padding: var(--space-xl);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  background: var(--color-bg);
  transition: transform 0.2s ease, box-shadow 0.2s ease, border-color 0.2s ease;
  position: relative;
  overflow: hidden;
}

.project-card::before {
  content: "";
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
  background: var(--color-accent);
  opacity: 0;
  transition: opacity 0.2s ease;
}

.project-card:hover {
  transform: translateY(-4px);
  box-shadow: var(--shadow-md);
  border-color: var(--color-accent);
}

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

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

.project-card__icon {
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-surface);
  border-radius: var(--border-radius-sm);
  margin-bottom: var(--space-md);
  color: var(--color-accent);
}

.project-card__icon svg {
  width: 20px;
  height: 20px;
}

.project-card__title {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.021em;
  margin: 0 0 var(--space-sm);
}

.project-card__desc {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0 0 var(--space-md);
  flex: 1;
}

.project-card__tags {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-xs);
  margin-bottom: var(--space-md);
}

.project-card__tag {
  font-size: var(--text-xs);
  padding: 2px 8px;
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  color: var(--color-text-secondary);
  border: var(--border-width) solid var(--color-border);
}

.project-card__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-accent);
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  transition: gap 0.2s ease;
}

.project-card:hover .project-card__link {
  gap: var(--space-sm);
}

/* --------------------------------------------------------------------------
   Education
   -------------------------------------------------------------------------- */

.education {
  background: var(--color-surface);
  border-top: 1px solid var(--color-border);
  border-bottom: 1px solid var(--color-border);
}

.edu-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: var(--space-2xl);
}

.edu-card {
  background: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  padding: var(--space-lg);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.edu-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.edu-card__degree {
  font-size: var(--text-base);
  font-weight: 600;
  letter-spacing: -0.021em;
  margin: 0 0 var(--space-xs);
  color: var(--color-accent);
}

.edu-card__school {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.021em;
  margin: 0 0 var(--space-sm);
}

.edu-card__date {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  margin: 0 0 var(--space-md);
  display: inline-block;
  background: var(--color-surface);
  padding: 2px 10px;
  border-radius: var(--border-radius-sm);
}

.edu-card__detail {
  font-size: var(--text-sm);
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin: 0 0 var(--space-xs);
}

.edu-card__detail--thesis {
  font-style: italic;
  color: var(--color-accent);
}

/* --------------------------------------------------------------------------
   Languages — Card Style
   -------------------------------------------------------------------------- */

.languages-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-lg);
}

.language-card {
  display: flex;
  gap: var(--space-md);
  padding: var(--space-lg);
  background: var(--color-bg);
  border: var(--border-width) solid var(--color-border);
  border-radius: var(--border-radius-md);
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.language-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

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

.language-card__icon {
  width: 40px;
  height: 40px;
  border-radius: var(--border-radius-sm);
  background: var(--color-surface);
  border: var(--border-width) solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: var(--text-sm);
  font-weight: 700;
  color: var(--color-accent);
  flex-shrink: 0;
}

.language-card__body {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
  flex: 1;
  min-width: 0;
}

.language-card__name {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.021em;
  margin: 0;
}

.language-card__level-row {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
}

.language-card__level {
  font-size: var(--text-xs);
  color: var(--color-text-secondary);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.language-card__pct {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-accent);
}

.language-card__track {
  height: 8px;
  background: var(--color-border);
  border-radius: 4px;
  overflow: hidden;
}

.language-card__fill {
  height: 100%;
  border-radius: 4px;
  background: var(--color-accent);
  transition: width 1s ease 0.2s;
}

.language-card__fill--native {
  width: 100%;
}

.language-card__fill--professional {
  width: 90%;
}

.language-card__fill--conversational {
  width: 40%;
}

/* --------------------------------------------------------------------------
   Scroll Reveal Animations
   -------------------------------------------------------------------------- */

.reveal {
  opacity: 0;
  transform: translateY(24px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

.reveal--visible {
  opacity: 1;
  transform: translateY(0);
}

/* Stagger children */
.reveal-stagger > * {
  opacity: 0;
  transform: translateY(16px);
  transition: opacity 0.5s ease, transform 0.5s ease;
}

.reveal-stagger--visible > *:nth-child(1) { transition-delay: 0s; }
.reveal-stagger--visible > *:nth-child(2) { transition-delay: 0.1s; }
.reveal-stagger--visible > *:nth-child(3) { transition-delay: 0.2s; }
.reveal-stagger--visible > *:nth-child(4) { transition-delay: 0.3s; }
.reveal-stagger--visible > *:nth-child(5) { transition-delay: 0.4s; }
.reveal-stagger--visible > *:nth-child(6) { transition-delay: 0.5s; }

.reveal-stagger--visible > * {
  opacity: 1;
  transform: translateY(0);
}

/* --------------------------------------------------------------------------
   Responsive
   -------------------------------------------------------------------------- */

@media (max-width: 1024px) {
  .skills-grid {
    gap: var(--space-xl) var(--space-2xl);
  }
}

@media (max-width: 768px) {
  :root {
    --section-gap: 56px;
  }

  /* Hero */
  .about-hero-grid {
    grid-template-columns: 1fr;
    justify-items: center;
    text-align: center;
    gap: var(--space-lg);
  }

  .about-hero-img {
    width: 180px;
    height: 180px;
  }

  .about-hero-text h1 {
    font-size: 36px;
  }

  .about-hero-text .tagline {
    max-width: 100%;
  }

  .about-hero-text .location {
    justify-content: center;
  }

  .back-link {
    justify-content: center;
  }

  .stats-row {
    justify-content: center;
  }

  /* Sticky nav — compact scrollable */
  .sticky-nav__list {
    justify-content: flex-start;
    padding: 0 var(--space-md);
  }

  .sticky-nav__link {
    padding: var(--space-sm) var(--space-sm);
    font-size: var(--text-xs);
  }

  /* Skills */
  .skills-grid {
    grid-template-columns: 1fr;
    gap: var(--space-xl);
  }

  /* Timeline — stack */
  .timeline::before {
    left: 20px;
  }

  .timeline-item {
    grid-template-columns: 1fr;
    gap: 0;
    padding-left: 48px;
  }

  .timeline-item__dot {
    left: 20px;
  }

  .timeline-item:nth-child(odd) .timeline-item__card,
  .timeline-item:nth-child(even) .timeline-item__card {
    grid-column: 1;
  }

  .timeline-item__spacer {
    display: none;
  }

  /* Projects */
  .projects-grid {
    grid-template-columns: 1fr;
  }

  /* Education */
  .edu-grid {
    grid-template-columns: 1fr;
  }

  /* Languages */
  .languages-grid {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 480px) {
  :root {
    --section-gap: 40px;
  }

  .about-hero {
    padding: var(--space-2xl) 0;
  }

  .about-hero-img {
    width: 140px;
    height: 140px;
  }

  .about-hero-text h1 {
    font-size: 28px;
  }

  .stat-card {
    padding: var(--space-sm) var(--space-md);
    min-width: 80px;
  }

  .stat-card__number {
    font-size: var(--text-xl);
  }

  .section-title {
    font-size: var(--text-lg);
  }
}

/* --------------------------------------------------------------------------
   Reduced Motion
   -------------------------------------------------------------------------- */

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

  .about-hero-img,
  .back-link,
  .stat-card,
  .timeline-item__card,
  .project-card,
  .edu-card,
  .language-card,
  .skill-bar__fill,
  .language-card__fill,
  .reveal,
  .reveal-stagger > * {
    transition: none !important;
  }

  .reveal,
  .reveal-stagger > * {
    opacity: 1;
    transform: none;
  }
}

/* --------------------------------------------------------------------------
   Dark Mode Overrides
   -------------------------------------------------------------------------- */

[data-theme="dark"] .timeline-item--current .timeline-item__dot {
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--color-accent) 20%, transparent);
}

[data-theme="dark"] .about-hero-img:hover {
  box-shadow: var(--shadow-lg);
}