:root {
  /* Colors */
  --color-bg: #0a0a0a;
  --color-text: #e8e8e8;
  --color-accent: #d4b896;
  --color-border: #1a1a1a;
  --color-meta: #9a9a9a;
  --color-hover: #e0c4a0;

  /* Surfaces & Utilities */
  --color-surface-01: rgba(255, 255, 255, 0.02);
  --color-surface-02: rgba(255, 255, 255, 0.03);
  --color-surface-03: rgba(255, 255, 255, 0.04);
  --color-header-bg: rgba(10, 10, 10, 0.95);
  --color-backdrop: rgba(10, 10, 10, 0.85);
  --color-accent-bg: rgba(212, 184, 150, 0.08);
  --color-accent-bg-hover: rgba(212, 184, 150, 0.1);
  --color-accent-border: rgba(212, 184, 150, 0.35);
  --color-accent-border-strong: rgba(212, 184, 150, 0.55);
  --color-light-text: rgba(232, 232, 232, 0.92);
  --color-light-text-2: rgba(232, 232, 232, 0.86);
  --color-light-text-3: rgba(232, 232, 232, 0.78);
  --color-shadow: rgba(0, 0, 0, 0.3);

  /* Typography */
  --font-primary: "Manrope", sans-serif;
  --font-mono: "JetBrains Mono", monospace;

  /* Spacing */
  --space-xs: 0.5rem;
  --space-sm: 1rem;
  --space-md: 1.5rem;
  --space-lg: 2rem;
  --space-xl: 3rem;
  --space-2xl: 4rem;

  /* Radius */
  --radius-sm: 4px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-full: 9999px;

  /* Layout */
  --container: 1200px;
  --header-h: 72px;

  /* Transitions */
  --transition: all 0.3s ease;
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-primary);
  background: var(--color-bg);
  color: var(--color-text);
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  text-rendering: optimizeLegibility;
}

/* Skip link */
.skip-link {
  position: absolute;
  left: -999px;
  top: 12px;
  padding: 0.75rem 1rem;
  background: var(--color-accent);
  color: #0a0a0a;
  border-radius: var(--radius-sm);
  z-index: 9999;
  transition: var(--transition);
}

.skip-link:focus {
  left: 12px;
  outline: none;
}

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

a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 3px;
  border-radius: var(--radius-sm);
}

.container {
  max-width: var(--container);
  margin: 0 auto;
  padding: 0 2rem;
}

@media (min-width: 1024px) {
  .container {
    padding: 0 4rem;
  }
}

/* Header */
header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-h);
  display: flex;
  align-items: center;
  backdrop-filter: blur(10px);
  background: var(--color-header-bg);
  border-bottom: 1px solid var(--color-border);
}

.nav {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  gap: 1.5rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  font-weight: 700;
  letter-spacing: 0.06em;
  font-size: 0.95rem;
  user-select: none;
}

.brand .dot {
  width: 8px;
  height: 8px;
  border-radius: 999px;
  background: var(--color-accent);
  opacity: 0.9;
}

.nav-links {
  display: none;
  align-items: center;
  gap: 1.25rem;
  font-size: 0.9rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.nav-links a {
  position: relative;
  padding: 0.25rem 0.1rem;
  line-height: 1.1;
  color: var(--color-meta);
}

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

.nav-links a::after {
  content: "";
  position: absolute;
  left: 0;
  bottom: -4px;
  width: 100%;
  height: 2px;
  background: var(--color-accent);
  transform: scaleX(0);
  transform-origin: left;
  transition: var(--transition);
  opacity: 0.9;
}

.nav-links a:hover::after {
  transform: scaleX(1);
}

.nav-cta {
  display: none;
  gap: 0.75rem;
  align-items: center;
}

/* Buttons */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.6rem;
  padding: 0.75rem 2rem;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  background: transparent;
  color: var(--color-text);
  user-select: none;
  white-space: nowrap;
}

.btn-primary {
  background: var(--color-accent);
  color: #0a0a0a;
}

.btn-primary:hover {
  background: var(--color-hover);
  transform: scale(1.02);
}

.btn-secondary {
  border: 2px solid var(--color-accent);
  color: var(--color-accent);
}

.btn-secondary:hover {
  background: var(--color-accent);
  color: #0a0a0a;
  transform: scale(1.02);
}

.btn-ghost {
  border: 1px solid var(--color-border);
  color: var(--color-meta);
  padding: 0.7rem 1.1rem;
}

.btn-ghost:hover {
  border-color: var(--color-accent-border);
  color: var(--color-hover);
  transform: translateY(-1px);
}

/* Mobile menu button */
.menu-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  cursor: pointer;
  transition: var(--transition);
}

.menu-btn:hover {
  border-color: var(--color-accent-border);
  transform: translateY(-1px);
}

.menu-btn span {
  display: block;
  width: 18px;
  height: 2px;
  background: var(--color-meta);
  position: relative;
  transition: var(--transition);
}

.menu-btn span::before,
.menu-btn span::after {
  content: "";
  position: absolute;
  left: 0;
  width: 18px;
  height: 2px;
  background: var(--color-meta);
  transition: var(--transition);
}

.menu-btn span::before {
  top: -6px;
}

.menu-btn span::after {
  top: 6px;
}

/* Overlay menu */
.overlay {
  position: fixed;
  inset: 0;
  background: var(--color-header-bg);
  backdrop-filter: blur(12px);
  z-index: 2000;
  display: none;
  opacity: 0;
  transition: var(--transition);
}

.overlay.open {
  display: block;
  opacity: 1;
}

.overlay-inner {
  height: 100%;
  display: grid;
  place-items: center;
  padding: 2rem;
}

.overlay-nav {
  width: min(520px, 100%);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-01);
  padding: 1.5rem;
}

.overlay-top {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
  margin-bottom: 1rem;
}

.overlay-links a {
  display: block;
  font-size: 1.25rem;
  font-weight: 600;
  padding: 0.9rem 0.75rem;
  border-radius: 10px;
  color: var(--color-text);
  transition: var(--transition);
}

.overlay-links a:hover {
  background: var(--color-accent-bg);
  color: var(--color-hover);
  transform: translateX(4px);
}

.overlay-actions {
  display: flex;
  gap: 0.75rem;
  margin-top: 1.25rem;
  flex-wrap: wrap;
}

@media (min-width: 1024px) {
  .nav-links {
    display: flex;
  }

  .nav-cta {
    display: flex;
  }

  .menu-btn {
    display: none;
  }
}

/* Main */
main {
  padding-top: 0.5rem;
}

section {
  padding: 4.5rem 0;
  scroll-margin-top: calc(var(--header-h) + 18px);
}

@media (min-width: 1024px) {
  section {
    padding: 6rem 0;
  }
}

/* Chapter header */
.chapter {
  display: flex;
  align-items: baseline;
  gap: 1.25rem;
  margin-bottom: 2.25rem;
}

.chapter .num {
  color: var(--color-accent);
  opacity: 0.75;
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: 0.08em;
  font-family: var(--font-mono);
}

.chapter h2 {
  margin: 0;
  font-weight: 700;
  line-height: 1.2;
  letter-spacing: -0.02em;
  font-size: clamp(2rem, 4vw, 2.5rem);
}

.section-block {
  margin-top: 1.5rem;
}

.section-block + .section-block {
  margin-top: 2.5rem;
}

.section-subtitle {
  margin: 0 0 1.25rem;
  font-size: 1.35rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

/* BTS Progress */
.bts-block {
  margin-top: 1.5rem;
}

.bts-block + .bts-block {
  margin-top: 2.5rem;
}

.bts-grid {
  display: grid;
  gap: 1.25rem;
}

.bts-grid-4 {
  grid-template-columns: 1fr;
}

.bts-grid-3 {
  grid-template-columns: 1fr;
}

@media (min-width: 900px) {
  .bts-grid-4 {
    grid-template-columns: repeat(4, 1fr);
  }

  .bts-grid-3 {
    grid-template-columns: repeat(3, 1fr);
  }
}

.bts-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  padding: 1.25rem;
  transition: var(--transition);
}

.bts-card h3 {
  margin: 0 0 0.75rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.bts-card ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--color-light-text-2);
}

.bts-card li {
  margin: 0.4rem 0;
}

.bts-card:hover {
  border-color: var(--color-accent-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--color-shadow);
}

/* Hero */
.hero {
  min-height: calc(90vh - var(--header-h));
  display: grid;
  align-items: center;
  padding: 4rem 0 6rem;
}

.hero-grid {
  display: grid;
  gap: 2.25rem;
  grid-template-columns: 1fr;
}

.hero .label {
  color: var(--color-meta);
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  font-size: 0.85rem;
}

.hero h1 {
  margin: 0.5rem 0 0;
  font-weight: 700;
  line-height: 1.12;
  letter-spacing: -0.02em;
  font-size: clamp(3rem, 6vw, 4rem);
}

.hero .role {
  margin-top: 0.75rem;
  font-weight: 600;
  color: var(--color-light-text);
  font-size: 1.15rem;
}

.hero .tagline {
  color: var(--color-meta);
  max-width: 65ch;
  margin-top: 1.25rem;
  font-size: 1rem;
}

.hero-actions {
  display: flex;
  gap: 1rem;
  flex-wrap: wrap;
  margin-top: 1.75rem;
  align-items: center;
}

.social {
  display: flex;
  gap: 1.5rem;
  margin-top: 1.75rem;
  align-items: center;
  flex-wrap: wrap;
}

.icon-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 44px;
  height: 44px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  color: var(--color-meta);
  background: var(--color-surface-01);
  transition: var(--transition);
}

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

.icon-link svg {
  width: 22px;
  height: 22px;
}

/* About */
.about-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-01);
  padding: 1.75rem;
  box-shadow: 0 24px 50px rgba(0, 0, 0, 0.35);
}

.about-bullets {
  display: grid;
  gap: 1.25rem;
}

.about-bullet {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.9rem;
  align-items: start;
}

.about-bullet p {
  margin: 0;
  color: var(--color-light-text);
}

.about-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  display: grid;
  place-items: center;
  color: var(--color-accent);
}

.about-icon svg {
  width: 20px;
  height: 20px;
}

.about-columns {
  display: grid;
  gap: 1.5rem;
  margin-top: 1.75rem;
  align-items: start;
}

.about-column {
  display: grid;
  grid-template-rows: auto 1fr;
  gap: 0.75rem;
}

.about-column-title {
  display: grid;
  grid-template-columns: auto 1fr;
  gap: 0.75rem;
  align-items: start;
  color: var(--color-light-text);
  font-weight: 600;
  min-height: 3.6em;
}

.about-column-title p {
  margin: 0;
}

.about-column-title .about-icon {
  align-self: start;
  margin-top: 2px;
}

.about-chip-list {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.about-chip {
  font-size: 0.85rem;
  padding: 0.45rem 0.9rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(212, 184, 150, 0.3);
  background: var(--color-accent-bg);
  color: var(--color-accent);
}

@media (min-width: 1024px) {
  .hero-grid {
    grid-template-columns: 1.2fr 0.8fr;
  }

  .about-columns {
    grid-template-columns: repeat(2, 1fr);
  }
}

.profile-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-01);
  padding: 1.5rem;
}

.profile-img {
  width: 100%;
  max-width: 320px;
  aspect-ratio: 1 / 1;
  border-radius: 12px;
  border: 2px solid var(--color-border);
  background: radial-gradient(circle at 30% 30%, rgba(212, 184, 150, 0.12), transparent 50%),
    radial-gradient(circle at 70% 60%, rgba(232, 232, 232, 0.08), transparent 45%),
    var(--color-surface-01);
  display: grid;
  place-items: center;
  color: rgba(232, 232, 232, 0.65);
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  user-select: none;
  overflow: hidden;
  margin: 0 auto;
}

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

.profile-img small {
  font-weight: 600;
  letter-spacing: 0.12em;
  color: var(--color-meta);
  margin-top: 0.5rem;
  display: block;
  font-size: 0.8rem;
}

.about-text p {
  margin: 0 0 1.5rem;
  max-width: 65ch;
  color: var(--color-light-text);
}

.info-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .info-cards {
    grid-template-columns: repeat(3, 1fr);
  }
}

.info {
  border: 1px solid var(--color-border);
  background: var(--color-surface-02);
  border-radius: var(--radius-md);
  padding: 1rem 1.25rem;
}

.info .k {
  color: var(--color-meta);
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-weight: 700;
}

.info .v {
  margin-top: 0.35rem;
  font-weight: 600;
}

.tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.75rem;
}

.tag {
  font-size: 0.875rem;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(212, 184, 150, 0.3);
  background: var(--color-accent-bg-hover);
  color: var(--color-accent);
  transition: var(--transition);
  user-select: none;
}

.tag:hover {
  border-color: var(--color-accent-border-strong);
  color: var(--color-hover);
}

/* Timeline */
.timeline {
  position: relative;
  display: grid;
  gap: 1.5rem;
  margin-top: 1.5rem;
}

.timeline::before {
  content: "";
  position: absolute;
  left: 10px;
  top: 0;
  bottom: 0;
  width: 2px;
  background: var(--color-border);
}

.entry {
  position: relative;
  display: grid;
  gap: 0.75rem;
  padding-left: 2.5rem;
}

.entry::before {
  content: "";
  position: absolute;
  left: 6px;
  top: 0.35rem;
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: var(--color-accent);
  opacity: 0.9;
}

.meta {
  color: var(--color-meta);
  font-size: 0.875rem;
}

.entry h3 {
  margin: 0;
  font-size: 1.5rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.org {
  color: var(--color-light-text-3);
  font-weight: 600;
  margin-top: -0.35rem;
}

.entry-desc {
  margin: 0.5rem 0 0;
  color: var(--color-light-text-2);
}

ul.bullets {
  margin: 0.5rem 0 0;
  padding-left: 1.1rem;
  color: var(--color-light-text-2);
  max-width: 65ch;
}

ul.bullets li {
  margin: 0.35rem 0;
}

.mini-tags {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
  margin-top: 0.25rem;
}

.mini-tag {
  font-size: 0.75rem;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(212, 184, 150, 0.25);
  color: rgba(212, 184, 150, 0.9);
  background: rgba(212, 184, 150, 0.07);
}

/* Experience groups */
.experience-groups {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.experience-group h3 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.experience-list {
  display: grid;
  gap: 1rem;
}

.experience-item {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  padding: 1rem 1.25rem;
  transition: var(--transition);
}

.experience-item:hover {
  border-color: var(--color-accent-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--color-shadow);
}

.experience-head {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.75rem;
  font-weight: 600;
}

.experience-org {
  color: var(--color-light-text);
}

.experience-date {
  color: var(--color-meta);
  font-family: var(--font-mono);
  font-size: 0.85rem;
}

.duration {
  position: relative;
  display: inline-flex;
  align-items: center;
}

.duration::after {
  content: attr(data-tooltip);
  position: absolute;
  left: 50%;
  bottom: calc(100% + 8px);
  transform: translateX(-50%) translateY(4px);
  background: var(--color-header-bg);
  color: var(--color-text);
  padding: 0.4rem 0.6rem;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  font-size: 0.75rem;
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  box-shadow: 0 8px 20px rgba(0, 0, 0, 0.35);
  z-index: 5;
}

.duration:hover::after,
.duration:focus-visible::after {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.experience-role {
  margin-top: 0.35rem;
  color: var(--color-meta);
  font-size: 0.95rem;
}

.experience-sub {
  margin-top: 0.35rem;
  color: rgba(232, 232, 232, 0.8);
  font-size: 0.9rem;
}

/* Projects */
.projects-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

@media (min-width: 768px) {
  .projects-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1200px) {
  .projects-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  overflow: hidden;
  transition: var(--transition);
  display: flex;
  flex-direction: column;
}

.card:hover {
  border-color: var(--color-accent-border-strong);
  transform: translateY(-4px);
}

.thumb {
  aspect-ratio: 16 / 9;
  background: linear-gradient(135deg, var(--color-accent-bg-hover), var(--color-surface-01)),
    radial-gradient(circle at 20% 30%, rgba(232, 232, 232, 0.08), transparent 45%),
    var(--color-surface-01);
  border-bottom: 1px solid var(--color-border);
  filter: grayscale(20%);
  transition: var(--transition);
}

.card:hover .thumb {
  filter: grayscale(0%);
}

.card-body {
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-thumb {
  width: 100%;
  height: 180px;
  object-fit: contain;
  border-radius: 14px;
  display: block;
  margin-bottom: 12px;
  background: var(--color-surface-03);
  border: 1px solid var(--color-border);
  padding: 12px;
}

.card h3 {
  margin: 0.75rem 0 0.5rem;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
  line-height: 1.25;
}

.card p {
  margin: 0 0 1.25rem;
  color: var(--color-meta);
  max-width: 65ch;
}

.card a.more {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  color: var(--color-meta);
  font-weight: 700;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  font-size: 0.8rem;
}

.card a.more:hover {
  color: var(--color-hover);
}

.arrow {
  width: 16px;
  height: 16px;
  transition: var(--transition);
}

.card a.more:hover .arrow {
  transform: translateX(3px);
}

/* Certifications */
.cert-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 2rem;
  margin-top: 1.5rem;
}

.cert-block + .cert-block {
  margin-top: 2.5rem;
}

.training-group + .training-group {
  margin-top: 2rem;
}

.training-title {
  margin: 0 0 1rem;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.training-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.5rem;
}

@media (min-width: 700px) {
  .training-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

@media (min-width: 1100px) {
  .training-grid {
    grid-template-columns: repeat(3, 1fr);
  }
}

.training-card img {
  width: 100%;
  height: 160px;
  object-fit: cover;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  margin-bottom: 12px;
}

.training-card .cert-body {
  display: flex;
  flex-direction: column;
  height: 100%;
}

.training-toggle {
  margin-top: auto;
  align-self: center;
  min-width: 160px;
  justify-content: center;
  text-align: center;
}

.training-details {
  margin-top: 0.75rem;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height 0.25s ease, opacity 0.25s ease;
}

.training-details ul {
  margin: 0;
  padding-left: 1.1rem;
  color: var(--color-light-text-2);
}

.training-details.is-open {
  max-height: 300px;
  opacity: 1;
}

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

.cert-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  padding: 1.5rem;
  display: grid;
  gap: 1rem;
  color: inherit;
  transition: var(--transition);
}

.cert-card img {
  width: 100%;
  max-width: 160px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
}

.cert-card:hover {
  border-color: var(--color-accent-border-strong);
  transform: translateY(-4px);
  box-shadow: 0 18px 40px rgba(0, 0, 0, 0.35);
}

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

.cert-body h3 {
  margin: 0 0 0.5rem;
  font-size: 1.1rem;
  font-weight: 700;
  letter-spacing: -0.01em;
}

.cert-issuer,
.cert-valid,
.cert-score {
  margin: 0;
  color: var(--color-meta);
}

/* Skills */
.skills {
  display: grid;
  gap: 2rem;
  margin-top: 1.5rem;
}

.skill-group {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-01);
  padding: 1.5rem;
}

.skill-group h3 {
  margin: 0 0 1rem;
  font-size: 1.25rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.skills-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.6rem;
}

.skills-cards {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1rem;
}

@media (min-width: 900px) {
  .skills-cards {
    grid-template-columns: repeat(2, 1fr);
  }

  .skills-cards .skill-card:last-child:nth-child(odd) {
    grid-column: 1 / -1;
  }
}

.skill-card {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  padding: 1.25rem;
  transition: var(--transition);
}

.skill-card h4 {
  margin: 0 0 0.5rem;
  font-size: 1.05rem;
  letter-spacing: -0.01em;
}

.badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.5rem;
  border-radius: 999px;
  margin-left: 0.5rem;
  display: inline-block;
  vertical-align: middle;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
  background: var(--color-accent-bg-hover);
}

.badge.learning {
  background: var(--color-accent-bg-hover);
}

.badge {
  font-size: 0.75rem;
  padding: 0.2rem 0.55rem;
  border-radius: 999px;
  margin-left: 0.5rem;
  display: inline-block;
  vertical-align: middle;
  line-height: 1.2;
  white-space: nowrap;
  border: 1px solid var(--color-accent-border);
  color: var(--color-accent);
}

.badge.learning {
  background: var(--color-accent-bg-hover);
}

.skill-card p {
  margin: 0;
  color: var(--color-meta);
}

.skill-card:hover {
  border-color: var(--color-accent-border-strong);
  transform: translateY(-2px);
  box-shadow: 0 12px 28px var(--color-shadow);
}

.skill-card {
  position: relative;
}
.skill-badge-corner {
  position: absolute;
  top: 0.5rem;
  right: 0.5rem;
}

.project-link {
  margin-top: auto;
  display: inline-flex;
  min-width: 160px;
  justify-content: center;
  text-align: center;
}

/* Contact */
.contact {
  text-align: center;
}

.contact p {
  color: var(--color-meta);
  max-width: 65ch;
  margin: 1.25rem auto 2rem;
}

.contact .social {
  justify-content: center;
  margin-top: 2rem;
  gap: 2rem;
}

.contact-qr {
  width: min(180px, 70%);
  margin: 1.5rem auto 0;
  display: block;
  border-radius: 16px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-03);
  padding: 10px;
}

/* Footer */
footer {
  border-top: 1px solid var(--color-border);
  padding: 2.5rem 0;
  color: var(--color-meta);
  font-size: 0.875rem;
  text-align: center;
}

footer a {
  color: var(--color-meta);
}

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

/* Reveal on scroll */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity 0.6s ease, transform 0.6s ease;
  will-change: opacity, transform;
}

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

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

  * {
    transition: none !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }
}

/* === UX/UI cleanup additions + About Bento === */

/* Profile card — replaces inline styles */
.profile-card-body { margin-top: 1.25rem; }
.profile-card-headline { font-weight: 700; margin-top: 0.35rem; letter-spacing: -0.02em; }
.profile-card-text { color: var(--color-meta); margin: 0.8rem 0 0; max-width: 65ch; }

/* Chapter centering */
.chapter-center { justify-content: center; }

/* About Bento Grid */
.about-bento {
  display: grid;
  gap: 1.25rem;
  grid-template-columns: 1fr;
}

.bento-cell {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-surface-01);
  padding: 1.5rem;
  transition: var(--transition);
}

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

.bento-wide {
  background: linear-gradient(160deg, rgba(255,255,255,0.03) 0%, rgba(255,255,255,0.01) 100%);
}

.bento-header {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
}

.bento-icon {
  width: 40px;
  height: 40px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  display: grid;
  place-items: center;
  color: var(--color-accent);
  flex-shrink: 0;
}

.bento-icon svg {
  width: 20px;
  height: 20px;
}

.bento-label {
  font-weight: 700;
  font-size: 0.95rem;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.bento-text {
  margin: 0;
  color: var(--color-light-text);
  line-height: 1.7;
}

@media (min-width: 768px) {
  .about-bento {
    grid-template-columns: repeat(2, 1fr);
  }
  .bento-wide {
    grid-column: span 2;
  }
}

/* Experience compact list */
.experience-list-compact {
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
}
.experience-row {
  display: flex;
  flex-wrap: wrap;
  justify-content: space-between;
  gap: 0.5rem;
  padding: 0.9rem 1.1rem;
  border-bottom: 1px solid var(--color-border);
}
.experience-row:last-child { border-bottom: none; }
.experience-row .experience-org { color: var(--color-light-text); font-weight: 600; }
.experience-row .experience-date { color: var(--color-meta); font-family: var(--font-mono); font-size: 0.85rem; }

/* Projects list (earlier work) */
.projects-list { margin-top: 3rem; }
.project-list-item {
  padding: 1.25rem 0;
  border-bottom: 1px solid var(--color-border);
}
.project-list-item:last-child { border-bottom: none; }
.project-list-head {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: 0.75rem;
  margin-bottom: 0.5rem;
}
.project-list-head h4 { margin: 0; font-size: 1.1rem; font-weight: 700; letter-spacing: -0.01em; }
.project-list-item > p { margin: 0; color: var(--color-meta); max-width: 70ch; }
.project-list-link {
  display: inline-flex;
  margin-top: 0.6rem;
  color: var(--color-meta);
  font-weight: 600;
  font-size: 0.85rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}
.project-list-link:hover { color: var(--color-hover); }

/* Certifications */
.cert-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
}
.cert-badges img {
  width: 72px;
  height: 72px;
  border-radius: 10px;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  object-fit: contain;
}

/* Training compact list */
.training-list {
  display: grid;
  gap: 0.75rem;
  margin-top: 1.5rem;
}
.training-row {
  display: grid;
  grid-template-columns: 48px 1fr auto;
  gap: 1rem;
  align-items: center;
  padding: 1rem 1.1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
}
@media (max-width: 699px) {
  .training-row {
    grid-template-columns: 1fr auto;
  }
  .training-row > img { display: none; }
}
.training-row > img {
  width: 48px;
  height: 48px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  object-fit: contain;
  background: var(--color-surface-03);
  padding: 4px;
}
.training-info h4 { margin: 0 0 0.2rem; font-size: 1rem; font-weight: 700; letter-spacing: -0.01em; }
.training-info p { margin: 0; color: var(--color-meta); font-size: 0.875rem; }
.training-row .training-toggle {
  padding: 0.5rem 0.9rem;
  font-size: 0.85rem;
  min-width: unset;
}
.training-row .training-details {
  grid-column: 1 / -1;
}

.training-row[data-collapsible] {
  display: none;
}
.training-row[data-collapsible].is-visible {
  display: grid;
}

.training-more-btn {
  margin-top: 1.25rem;
  min-width: 200px;
}

.projects-grid .card[data-collapsible] {
  display: none;
}
.projects-grid .card[data-collapsible].is-visible {
  display: flex;
}
.projects-more-btn {
  margin-top: 1.25rem;
  min-width: 200px;
}

/* BTS summary card */
.bts-summary { width: 100%; }
.bts-summary p { margin: 0; color: var(--color-light-text); }

/* Footer */
footer .container { display: flex; flex-direction: column; gap: 0.5rem; }
.footer-nav {
  display: flex;
  justify-content: center;
  gap: 1.25rem;
  flex-wrap: wrap;
  margin-bottom: 0.25rem;
}
.footer-nav a { color: var(--color-meta); font-weight: 500; }
.footer-nav a:hover { color: var(--color-hover); }
.footer-copy { color: var(--color-meta); }

/* BTS Reflection (restored + spacing matched to training-more-btn) */
.bts-reflection {
  margin-top: 1.25rem;
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1rem;
}

.reflection-panel {
  width: 100%;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-01);
  padding: 1.25rem;
  line-height: 1.7;
}

.reflection-status {
  margin: 0;
  color: var(--color-meta);
}

.reflection-content > *:first-child {
  margin-top: 0;
}

.reflection-content ul {
  margin: 0.75rem 0 0;
  padding-left: 1.2rem;
  color: var(--color-light-text-2);
}

.reflection-content p {
  margin: 0 0 0.75rem;
}

.reflection-tabs {
  display: flex;
  gap: 0.5rem;
  margin-bottom: 1rem;
  flex-wrap: wrap;
}

.reflection-tab {
  font-size: 0.85rem;
  padding: 0.4rem 0.9rem;
  border-radius: var(--radius-full);
}

.reflection-tab.is-active {
  border-color: var(--color-accent);
  color: var(--color-accent);
  background: rgba(212, 184, 150, 0.1);
}

/* Training Modal */
.training-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}
.training-modal.is-open {
  display: flex;
}
.training-modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-backdrop);
  backdrop-filter: blur(8px);
}
.training-modal-content {
  position: relative;
  width: min(640px, 100%);
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  background: var(--color-bg);
  padding: 2rem;
}
.training-modal-header {
  display: flex;
  gap: 1rem;
  align-items: flex-start;
  margin-bottom: 1.25rem;
}
.training-modal-header img {
  width: 64px;
  height: 64px;
  border-radius: 12px;
  border: 1px solid var(--color-border);
  object-fit: contain;
  background: var(--color-surface-03);
  padding: 6px;
  flex-shrink: 0;
}
.training-modal-header h3 {
  margin: 0;
  font-size: 1.35rem;
  line-height: 1.2;
}
.training-modal-meta {
  color: var(--color-meta);
  font-size: 0.9rem;
  margin-top: 0.35rem;
}
.training-modal-close {
  margin-left: auto;
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  color: var(--color-meta);
  border-radius: var(--radius-sm);
  cursor: pointer;
  font-family: inherit;
  font-weight: 600;
  white-space: nowrap;
}
.training-modal-close:hover {
  border-color: var(--color-accent-border);
  color: var(--color-hover);
}
.training-modal-body p {
  color: var(--color-light-text);
  line-height: 1.7;
  margin: 0 0 1.5rem;
}
.training-modal-section h4 {
  margin: 0 0 0.75rem;
  font-size: 0.85rem;
  letter-spacing: 0.06em;
  text-transform: uppercase;
  color: var(--color-meta);
  font-weight: 700;
}
#trainingModalTakeaway {
  margin: 0 0 1.25rem;
  padding-left: 1rem;
  border-left: 3px solid var(--color-accent);
  color: rgba(232, 232, 232, 0.88);
  font-style: italic;
  line-height: 1.7;
}
.training-modal-skills {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}
.training-modal-skills .skill-tag {
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-full);
  border: 1px solid rgba(212, 184, 150, 0.25);
  color: rgba(212, 184, 150, 0.9);
  background: rgba(212, 184, 150, 0.07);
}

.cv-modal {
  position: fixed;
  inset: 0;
  z-index: 3000;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 1.5rem;
}
.cv-modal.is-open {
  display: flex;
}
.cv-modal-backdrop {
  position: absolute;
  inset: 0;
  background: var(--color-backdrop);
  backdrop-filter: blur(6px);
}
.cv-modal-content {
  position: relative;
  width: min(400px, 100%);
  max-height: calc(100vh - 4rem);
  overflow-y: auto;
  background: var(--color-surface-01);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-lg);
  padding: 1.5rem;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
}
.cv-modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: 1.25rem;
}
.cv-modal-header h3 {
  margin: 0;
  font-size: 1.25rem;
  line-height: 1.2;
  color: var(--color-text);
}
.cv-modal-close {
  padding: 0.5rem 1rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  background: var(--color-surface-02);
  color: var(--color-meta);
  font-size: 0.85rem;
  cursor: pointer;
  transition: var(--transition);
}
.cv-modal-close:hover {
  border-color: var(--color-accent-border);
  color: var(--color-hover);
}
.cv-modal-hint {
  color: var(--color-meta);
  font-size: 0.95rem;
  margin: 0 0 1.25rem;
  line-height: 1.5;
}
.cv-modal-options {
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
}
.cv-option {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.85rem 1.25rem;
  font-size: 1rem;
  text-decoration: none;
}
.cv-modal-btn {
  cursor: pointer;
}

/* Theme toggle & language switcher */
.hero-controls {
  display: flex;
  justify-content: flex-end;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.lang-switcher {
  display: flex;
  align-items: center;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  overflow: hidden;
}

.lang-btn {
  padding: 0.4rem 0.6rem;
  border: none;
  background: transparent;
  color: var(--color-meta);
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
}

.lang-btn:hover {
  color: var(--color-hover);
}

.lang-btn.active {
  background: var(--color-accent);
  color: #0a0a0a;
}

.theme-toggle {
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  border: 1px solid var(--color-border);
  background: var(--color-surface-01);
  color: var(--color-meta);
  cursor: pointer;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
}

.theme-toggle:hover {
  border-color: var(--color-accent-border);
  color: var(--color-hover);
}

.theme-icon {
  width: 20px;
  height: 20px;
}

.theme-icon-sun {
  display: none;
}

[data-theme="light"] .theme-icon-moon {
  display: none;
}

[data-theme="light"] .theme-icon-sun {
  display: block;
}

/* Mobile language switcher in overlay menu */
.overlay-lang-switcher {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1.5rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--color-border);
}

.overlay-lang-switcher .lang-btn {
  flex: 1;
  padding: 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  font-size: 0.9rem;
}

/* Light theme overrides */
[data-theme="light"] {
  --color-bg: #f8f6f3;
  --color-text: #1a1a1a;
  --color-border: #e5e0d8;
  --color-meta: #666666;
  --color-hover: #b8976a;
  --color-surface-01: rgba(0, 0, 0, 0.03);
  --color-surface-02: rgba(0, 0, 0, 0.04);
  --color-surface-03: rgba(0, 0, 0, 0.05);
  --color-header-bg: rgba(255, 255, 255, 0.92);
  --color-backdrop: rgba(248, 246, 243, 0.92);
  --color-accent-bg: rgba(180, 150, 110, 0.12);
  --color-accent-bg-hover: rgba(180, 150, 110, 0.18);
  --color-accent-border: rgba(180, 150, 110, 0.35);
  --color-accent-border-strong: rgba(180, 150, 110, 0.55);
  --color-light-text: rgba(26, 26, 26, 0.9);
  --color-light-text-2: rgba(26, 26, 26, 0.82);
  --color-light-text-3: rgba(26, 26, 26, 0.72);
  --color-shadow: rgba(0, 0, 0, 0.1);
}

[data-theme="light"] .skip-link {
  color: #0a0a0a;
}

[data-theme="light"] .btn-primary,
[data-theme="light"] .btn-secondary:hover,
[data-theme="light"] .lang-btn.active {
  color: #0a0a0a;
}

[data-theme="light"] .project-thumb {
  background: var(--color-surface-02);
}

[data-theme="light"] .training-modal-backdrop,
[data-theme="light"] .cv-modal-backdrop,
[data-theme="light"] .overlay {
  background: rgba(80, 80, 80, 0.35);
}

[data-theme="light"] .overlay-inner,
[data-theme="light"] .training-modal-content,
[data-theme="light"] .cv-modal-content {
  background: rgba(255, 255, 255, 0.98);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.12);
}

[data-theme="light"] .bento-cell,
[data-theme="light"] .skill-card,
[data-theme="light"] .cert-card,
[data-theme="light"] .training-row,
[data-theme="light"] .card,
[data-theme="light"] .experience-row {
  border-color: var(--color-border);
}

[data-theme="light"] .experience-row .experience-org {
  color: var(--color-light-text);
}

[data-theme="light"] .skill-tag,
[data-theme="light"] .mini-tag,
[data-theme="light"] .tag {
  border-color: var(--color-accent-border);
}

[data-theme="light"] .badge.learning {
  background: rgba(180, 150, 110, 0.15);
  color: #8a6d42;
}

[data-theme="light"] .profile-card {
  background: rgba(255, 255, 255, 0.6);
}

[data-theme="light"] .profile-img {
  background: var(--color-surface-01);
}

[data-theme="light"] .menu-btn {
  background: var(--color-surface-01);
}

[data-theme="light"] .menu-btn:hover {
  border-color: var(--color-accent-border);
}

[data-theme="light"] .training-modal-close:hover,
[data-theme="light"] .cv-modal-close:hover {
  border-color: var(--color-accent-border);
}