/* ---------- Self-hosted fonts ----------
   Served from this origin, not fonts.gstatic.com: loading Google Fonts
   from a German site transmits the visitor's IP to Google without consent
   (LG Munchen I, 3 O 17493/20). IBM Plex is licensed under the OFL 1.1.
   IBM Plex Sans is a variable font (wght 100-700) - one file, all weights.
   ---------------------------------------- */
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-sans-var-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Sans';
  font-style: normal;
  font-weight: 100 700;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-sans-var-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-mono-500-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-mono-500-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-mono-600-latin.woff2) format('woff2');
  unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 600;
  font-display: swap;
  src: url(../assets/fonts/ibm-plex-mono-600-latin-ext.woff2) format('woff2');
  unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

/* ---------- Reset & base ---------- */
*, *::before, *::after { box-sizing: border-box; }
html { scroll-behavior: smooth; }
img { max-width: 100%; display: block; }
a { text-decoration: none; color: inherit; }
ul { list-style: none; margin: 0; padding: 0; }
button { font: inherit; cursor: pointer; }

/* ---------- Theme tokens ---------- */
:root {
  --bg: #f4f5f8;
  --bg-alt: #eceef3;
  --text: #14161c;
  --text-muted: #5a5f6b;
  --border: #dee1e8;
  --card: #ffffff;
  --accent: #0e7c86;
  --accent-contrast: #ffffff;
  --shadow: 0 8px 24px rgba(20, 20, 31, 0.06);
  --radius: 14px;
  --max-width: 1100px;
  --ease: cubic-bezier(.16, 1, .3, 1);
}

[data-theme="dark"] {
  --bg: #0f1115;
  --bg-alt: #14161d;
  --text: #eef0f3;
  --text-muted: #99a0ab;
  --border: #262b35;
  --card: #171a21;
  --accent: #4fd1c5;
  --accent-contrast: #0b0e17;
  --shadow: 0 8px 28px rgba(0, 0, 0, 0.45);
}

body {
  margin: 0;
  font-family: 'IBM Plex Sans', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  background: var(--bg);
  color: var(--text);
  /* the opacity leg is the cross-fade while the language swaps */
  transition: background .25s ease, color .25s ease, opacity .14s ease;
  -webkit-font-smoothing: antialiased;
}

.container {
  max-width: var(--max-width);
  margin: 0 auto;
  padding: 0 24px;
}

.skip-link {
  position: absolute;
  left: -999px;
  top: 0;
  background: var(--accent);
  color: #fff;
  padding: 10px 16px;
  border-radius: 0 0 8px 0;
  z-index: 100;
}
.skip-link:focus { left: 0; }

/* ---------- Header ---------- */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: color-mix(in srgb, var(--bg) 85%, transparent);
  backdrop-filter: blur(10px);
  border-bottom: 1px solid transparent;
  transition: box-shadow .4s var(--ease), border-color .4s ease;
}
.site-header.scrolled {
  border-color: var(--border);
  box-shadow: 0 8px 24px rgba(20, 20, 31, 0.06);
}
[data-theme="dark"] .site-header.scrolled { box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4); }

.scroll-progress {
  position: fixed;
  top: 0; left: 0;
  height: 3px;
  width: 0%;
  background: var(--accent);
  z-index: 999;
  transition: width .12s linear;
}
.nav-inner {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 10px 28px;
  /* keep the .container side padding — without it the logo sits flush
     against the screen edge on narrow viewports */
  padding: 14px 24px;
}
.logo {
  font-weight: 800;
  font-size: 1.25rem;
  letter-spacing: -0.02em;
}
.logo span {
  color: var(--accent);
  display: inline-block;
  transition: transform .35s var(--ease);
}
.logo:hover span { transform: scale(1.5) rotate(12deg); }

.nav-links {
  display: flex;
  flex-wrap: wrap;
  gap: 10px 28px;
}
.nav-links a {
  font-weight: 500;
  font-size: 0.95rem;
  color: var(--text-muted);
  position: relative;
  padding: 6px 0;
  transition: color .2s ease;
}
.nav-links a:hover { color: var(--text); }
.nav-links a::after {
  content: "";
  position: absolute;
  left: 0; right: 100%;
  bottom: 0;
  height: 2px;
  background: var(--accent);
  transition: right .25s ease;
}
.nav-links a:hover::after { right: 0; }

.nav-actions { display: flex; align-items: center; gap: 8px; }
.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px; height: 38px;
  border-radius: 10px;
  border: 1px solid var(--border);
  background: var(--card);
  color: var(--text);
  position: relative;
  transition: transform .2s ease, border-color .2s ease, color .2s ease;
}
.icon-btn:hover { border-color: var(--accent); color: var(--accent); transform: translateY(-2px); }
.icon-btn svg { width: 18px; height: 18px; }
.icon-btn svg.icon {
  position: absolute; inset: 0; margin: auto;
  transition: transform .5s var(--ease), opacity .35s ease;
}
.icon-sun { opacity: 1; transform: rotate(0deg) scale(1); }
.icon-moon { opacity: 0; transform: rotate(-90deg) scale(.4); }
[data-theme="dark"] .icon-sun { opacity: 0; transform: rotate(90deg) scale(.4); }
[data-theme="dark"] .icon-moon { opacity: 1; transform: rotate(0deg) scale(1); }


/* ---------- Buttons ---------- */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 12px 22px;
  border-radius: 10px;
  font-weight: 600;
  font-size: 0.95rem;
  border: 1px solid transparent;
  position: relative;
  overflow: hidden;
  transition: transform .3s var(--ease), box-shadow .3s var(--ease), background .2s ease, border-color .2s ease;
}
.btn:hover { transform: translateY(-2px); }
.btn::after {
  content: "";
  position: absolute;
  top: 0; left: -60%;
  width: 45%; height: 100%;
  background: linear-gradient(120deg, transparent, rgba(255,255,255,.35), transparent);
  transform: skewX(-20deg);
  transition: left .65s var(--ease);
}
.btn:hover::after { left: 130%; }
.btn-primary {
  background: var(--accent);
  color: #fff;
  box-shadow: 0 10px 24px -8px color-mix(in srgb, var(--accent) 55%, transparent);
}
.btn-ghost {
  background: transparent;
  border-color: var(--border);
  color: var(--text);
}
.btn-ghost:hover { border-color: var(--accent); color: var(--accent); }

/* ---------- Hero ---------- */
.hero { padding: 110px 0 90px; position: relative; overflow: hidden; }
.hero-inner { max-width: 760px; }

/* ---------- Aurora background (hero + page headers) ---------- */
.aurora-bg {
  position: absolute;
  inset: 0;
  z-index: 0;
  overflow: hidden;
  pointer-events: none;
}
.aurora-bg span {
  position: absolute;
  border-radius: 50%;
  filter: blur(70px);
  opacity: .28;
  background: var(--accent);
  animation: auroraFloat 16s ease-in-out infinite;
}
.aurora-bg span:nth-child(1) { width: 340px; height: 340px; top: -110px; left: 8%; }
.aurora-bg span:nth-child(2) { width: 280px; height: 280px; top: 30%; right: 4%; animation-delay: 4s; }
.aurora-bg span:nth-child(3) { width: 220px; height: 220px; bottom: -90px; left: 38%; animation-delay: 8s; }

@keyframes auroraFloat {
  0%, 100% { transform: translate(0, 0) scale(1); }
  50% { transform: translate(28px, -26px) scale(1.12); }
}

.hero::before, .page-hero::before {
  content: "";
  position: absolute;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background: radial-gradient(560px circle at var(--mx, 50%) var(--my, 15%), color-mix(in srgb, var(--accent) 12%, transparent), transparent 62%);
  opacity: 0;
  transition: opacity .5s ease;
}
.hero:hover::before, .page-hero:hover::before { opacity: 1; }

.hero-inner, .hero > .container, .page-hero > .container {
  position: relative;
  z-index: 1;
}
.eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--accent);
  font-size: 0.9rem;
  margin: 0 0 10px;
}
.hero-title {
  font-size: clamp(2.2rem, 6vw, 3.4rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  margin: 0 0 14px;
  line-height: 1.1;
  text-wrap: balance;
}
.hero-subtitle {
  font-size: clamp(1.05rem, 2.4vw, 1.3rem);
  color: var(--text-muted);
  margin: 0 0 18px;
}
.hero-subtitle strong {
  color: var(--accent);
  font-weight: 700;
}
.hero-desc {
  color: var(--text-muted);
  font-size: 1.02rem;
  line-height: 1.7;
  max-width: 620px;
  margin: 0 0 32px;
}
.hero-actions { display: flex; flex-wrap: wrap; gap: 12px; margin-bottom: 34px; }
.hero-socials { display: flex; gap: 16px; }
.hero-socials a {
  color: var(--text-muted);
  transition: color .2s ease, transform .2s ease;
}
.hero-socials a:hover { color: var(--accent); transform: translateY(-2px); }
.hero-socials svg { width: 22px; height: 22px; }

/* ---------- Sections ---------- */
.section { padding: 90px 0; }
.section-alt { background: var(--bg-alt); }
.section-eyebrow {
  font-family: 'IBM Plex Mono', monospace;
  color: var(--accent);
  font-size: 0.85rem;
  margin: 0 0 8px;
  text-transform: uppercase;
  letter-spacing: 0.08em;
}
.section-title {
  font-size: clamp(1.6rem, 3.6vw, 2.1rem);
  font-weight: 800;
  letter-spacing: -0.02em;
  margin: 0 0 18px;
  text-wrap: balance;
}
.section-intro {
  color: var(--text-muted);
  max-width: 640px;
  margin: -6px 0 40px;
  line-height: 1.6;
}

/* ---------- About ---------- */
.about-grid {
  display: grid;
  grid-template-columns: 180px 1fr;
  gap: 48px;
  align-items: start;
}
.avatar-wrap { display: flex; justify-content: center; }
.avatar {
  width: 150px; height: 150px;
  border-radius: 28px;
  background: var(--accent);
  color: #fff;
  display: flex; align-items: center; justify-content: center;
  font-size: 2.4rem;
  font-weight: 800;
  box-shadow: var(--shadow);
  overflow: hidden;
  transition: transform .3s var(--ease);
}
.avatar:hover { transform: scale(1.05) rotate(-2deg); }
.avatar img {
  width: 100%; height: 100%;
  object-fit: cover;
  object-position: center 22%;
  display: block;
}
/* Until assets/profile.jpg loads, show the "SK" initials instead */
.avatar.no-photo img { display: none; }
.avatar-initials { display: none; }
.avatar.no-photo .avatar-initials { display: block; }
.about-text {
  color: var(--text-muted);
  line-height: 1.75;
  margin: 0 0 16px;
  font-size: 1.02rem;
}
.about-text strong { color: var(--text); }
.quick-facts { margin-top: 22px; display: flex; flex-direction: column; gap: 10px; }
.quick-facts li {
  display: flex; align-items: center; gap: 10px;
  font-size: 0.96rem;
  color: var(--text);
}

/* ---------- Cards ----------
   Every card surface shares this shell; the rules further down only add
   what makes each one different (padding, layout, hover lift). Keep this
   block above them so those can still override. */
.skill-card, .project-card, .contact-card, .contact-email,
.avail-card, .cert-program, .cert-card {
  background: var(--card);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.project-card:hover, .contact-card:hover,
.avail-card:hover, .cert-program:hover, .cert-card:hover { border-color: var(--accent); }

/* ---------- Skills ---------- */
/* Masonry columns rather than a grid: the skill groups have very different
   numbers of tags, and a row-based grid either stretches short cards (dead
   space inside) or leaves a vertical gap under them (dead space outside).
   Columns let each card sit directly under the previous one. */
.skills-grid {
  columns: 3 290px;
  column-gap: 20px;
}
.skills-grid > .skill-card {
  break-inside: avoid;
  -webkit-column-break-inside: avoid;
  margin: 0 0 20px;
  /* a transformed element inside a multicol container can break column
     fragmentation, so these fade in without the translate */
  transform: none !important;
}
.skill-card {
  padding: 22px;
  display: flex;
  flex-direction: column;
  transition: opacity .6s ease, transform .6s ease;
}
.skill-card h3 { margin: 0 0 14px; font-size: 1rem; }
.tag-row { display: flex; flex-wrap: wrap; gap: 8px; }
.tag {
  font-size: 0.8rem;
  font-weight: 500;
  padding: 6px 12px;
  border-radius: 999px;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
[data-theme="dark"] .tag { background: rgba(255,255,255,0.04); }

/* ---------- Projects ---------- */
.project-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: 24px;
}
.project-card {
  padding: 26px;
  display: flex;
  flex-direction: column;
  box-shadow: var(--shadow);
  transition: transform .2s ease, border-color .2s ease, opacity .6s ease;
}
.project-card:hover { transform: translateY(-4px); }
.project-card-top { display: flex; align-items: center; justify-content: space-between; margin-bottom: 12px; }
.project-icon {
  width: 42px; height: 42px;
  border-radius: 10px;
  display: flex; align-items: center; justify-content: center;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
  font-size: 1.2rem;
}
.project-card h3 { margin: 0 0 10px; font-size: 1.12rem; letter-spacing: -0.01em; }
.project-card p {
  color: var(--text-muted);
  font-size: 0.94rem;
  line-height: 1.6;
  margin: 0 0 16px;
  flex-grow: 1;
}
.project-tags { display: flex; flex-wrap: wrap; gap: 6px; margin-bottom: 18px; }
.project-tags .tag { font-size: 0.72rem; padding: 4px 10px; }
.project-links { display: flex; gap: 10px; flex-wrap: wrap; }
.project-links a {
  font-size: 0.85rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  transition: border-color .2s ease, color .2s ease;
}
.project-links a:hover { border-color: var(--accent); color: var(--accent); }
.project-links a.primary {
  background: var(--text);
  color: var(--bg);
  border-color: var(--text);
}
[data-theme="dark"] .project-links a.primary { background: var(--accent); border-color: var(--accent); color: #0b0e17; }
.project-links a.primary:hover { opacity: .9; color: var(--bg); }

/* ---------- Contact ---------- */
.contact-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: 18px;
  max-width: 640px;
}
.contact-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 10px;
  font-weight: 600;
  transition: transform .2s ease, border-color .2s ease, color .2s ease, opacity .6s ease;
}
.contact-card:hover { transform: translateY(-4px); color: var(--accent); }
.contact-card svg { width: 24px; height: 24px; }

/* ---------- Footer ---------- */
.site-footer { border-top: 1px solid var(--border); padding: 28px 0; }
.footer-inner { text-align: center; }
.footer-inner p { margin: 0; color: var(--text-muted); font-size: 0.88rem; }

/* ---------- Responsive ---------- */
@media (max-width: 820px) {
  .about-grid { grid-template-columns: 1fr; }
  .avatar-wrap { justify-content: flex-start; }
  .avatar { width: 110px; height: 110px; font-size: 1.8rem; }
}

@media (max-width: 720px) {
  .hero { padding: 70px 0 60px; }
  .section { padding: 64px 0; }
}

/* ---------- Multi-page additions ---------- */
.nav-links a.active { color: var(--text); }
.nav-links a.active::after { right: 0; }

.page-hero { padding: 64px 0 8px; position: relative; overflow: hidden; }
.page-hero .section-title { margin-bottom: 10px; }

.intro-actions { margin-top: 6px; }

.section-footer-link { margin-top: 32px; }

@media (prefers-reduced-motion: reduce) {
  * { transition: none !important; animation: none !important; }
  html { scroll-behavior: auto; }
}

/* ---------- Motion ---------- */
.reveal { opacity: 1; }
html.js .reveal {
  opacity: 0;
  transform: translateY(22px) scale(.98);
  transition: opacity .7s var(--ease), transform .7s var(--ease);
}
html.js .reveal.visible {
  opacity: 1;
  transform: translateY(0) scale(1);
}

/* staggered reveal for grid items */
.project-grid > .reveal:nth-child(2), .skills-grid > .reveal:nth-child(2), .contact-grid > .reveal:nth-child(2) { transition-delay: .06s; }
.project-grid > .reveal:nth-child(3), .skills-grid > .reveal:nth-child(3), .contact-grid > .reveal:nth-child(3) { transition-delay: .12s; }
.project-grid > .reveal:nth-child(4), .skills-grid > .reveal:nth-child(4) { transition-delay: .18s; }
.project-grid > .reveal:nth-child(5) { transition-delay: .24s; }
.project-grid > .reveal:nth-child(6) { transition-delay: .3s; }

/* hero / page-header load-in */
@keyframes riseIn {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}
html.js .hero-anim > * {
  opacity: 0;
  animation: riseIn .8s var(--ease) forwards;
}
.hero-anim > *:nth-child(1) { animation-delay: .05s; }
.hero-anim > *:nth-child(2) { animation-delay: .14s; }
.hero-anim > *:nth-child(3) { animation-delay: .23s; }
.hero-anim > *:nth-child(4) { animation-delay: .32s; }
.hero-anim > *:nth-child(5) { animation-delay: .41s; }
.hero-anim > *:nth-child(6) { animation-delay: .5s; }



/* ============================================================
   Language toggle (EN / DE)
   ============================================================ */
.lang-switch {
  display: inline-flex;
  align-items: center;
  padding: 3px;
  gap: 2px;
  border: 1px solid var(--border);
  border-radius: 10px;
  background: var(--card);
}
.lang-switch button {
  border: 0;
  background: transparent;
  color: var(--text-muted);
  font-family: 'IBM Plex Mono', monospace;
  font-size: 0.74rem;
  font-weight: 600;
  letter-spacing: .04em;
  padding: 5px 9px;
  border-radius: 7px;
  transition: color .2s ease, background .25s var(--ease);
}
.lang-switch button:hover { color: var(--text); }
.lang-switch button.active {
  background: var(--accent);
  color: #fff;
}
[data-theme="dark"] .lang-switch button.active { color: #0b0e17; }

body.lang-switching { opacity: .35; }

/* ============================================================
   Mobile menu
   ============================================================ */
.menu-toggle { display: none; }
.menu-toggle span {
  display: block;
  width: 17px;
  height: 2px;
  background: currentColor;
  border-radius: 2px;
  transition: transform .32s var(--ease), opacity .2s ease;
}
.menu-toggle span + span { margin-top: 4px; }
.menu-toggle.open span:nth-child(1) { transform: translateY(6px) rotate(45deg); }
.menu-toggle.open span:nth-child(2) { opacity: 0; }
.menu-toggle.open span:nth-child(3) { transform: translateY(-6px) rotate(-45deg); }

@media (max-width: 780px) {
  .nav-inner { flex-wrap: nowrap; gap: 8px; }
  .menu-toggle {
    display: inline-flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
  }
  .nav-links {
    position: absolute;
    top: 100%;
    left: 0;
    right: 0;
    flex-direction: column;
    gap: 0;
    background: var(--bg);
    border-bottom: 1px solid var(--border);
    box-shadow: var(--shadow);
    padding: 0 24px;
    max-height: 0;
    overflow: hidden;
    opacity: 0;
    transition: max-height .38s var(--ease), opacity .25s ease, padding .38s var(--ease);
  }
  .nav-links.open {
    max-height: 320px;
    opacity: 1;
    padding: 8px 24px 18px;
  }
  .nav-links a {
    font-size: 1rem;
    padding: 13px 0;
    border-bottom: 1px solid var(--border);
  }
  .nav-links a:last-child { border-bottom: 0; }
  .nav-links a::after { display: none; }
  .nav-links a.active { color: var(--accent); }
  .site-header { position: sticky; }
}

/* ============================================================
   Availability
   ============================================================ */
.avail-head {
  display: flex;
  align-items: baseline;
  gap: 14px;
  flex-wrap: wrap;
  margin-bottom: 28px;
}
.avail-head .section-title { margin-bottom: 0; }
.status-dot {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: .82rem;
  font-weight: 600;
  color: var(--accent);
  font-family: 'IBM Plex Mono', monospace;
}
.status-dot::before {
  content: "";
  width: 9px; height: 9px;
  border-radius: 50%;
  background: var(--accent);
  box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 60%, transparent);
  animation: pulse 2.4s ease-out infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 color-mix(in srgb, var(--accent) 55%, transparent); }
  70%  { box-shadow: 0 0 0 9px transparent; }
  100% { box-shadow: 0 0 0 0 transparent; }
}

.avail-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 18px;
}
.avail-card {
  padding: 22px;
  transition: opacity .6s ease, transform .6s ease, border-color .2s ease;
}
.avail-card .label {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .72rem;
  text-transform: uppercase;
  letter-spacing: .08em;
  color: var(--text-muted);
  margin: 0 0 8px;
}
.avail-card .value {
  font-size: 1.12rem;
  font-weight: 700;
  letter-spacing: -.01em;
  margin: 0 0 8px;
  color: var(--text);
}
.avail-card .note {
  font-size: .87rem;
  line-height: 1.6;
  color: var(--text-muted);
  margin: 0;
}
.avail-footer { margin-top: 30px; }

/* ============================================================
   Contact: click-to-copy email
   ============================================================ */
.contact-email {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  padding: 18px 20px;
  margin-bottom: 22px;
  max-width: 640px;
}
.contact-email .addr {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .95rem;
  color: var(--text);
  word-break: break-all;
  flex: 1 1 auto;
}
.copy-btn {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  padding: 9px 14px;
  border-radius: 9px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text);
  font-size: .84rem;
  font-weight: 600;
  white-space: nowrap;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.copy-btn:hover { border-color: var(--accent); color: var(--accent); }
.copy-btn svg { width: 15px; height: 15px; flex: none; }
.copy-btn.copied { border-color: var(--accent); background: color-mix(in srgb, var(--accent) 14%, transparent); color: var(--accent); }
.copy-btn.copied .icon-copy { display: none; }
.copy-btn .icon-check { display: none; }
.copy-btn.copied .icon-check { display: inline; }
.copy-btn.copy-failed { border-color: #d9534f; color: #d9534f; }
.contact-hint {
  color: var(--text-muted);
  font-size: .88rem;
  margin: 0 0 34px;
  max-width: 640px;
}

/* ============================================================
   No-JS notice
   ============================================================ */
.nojs-note {
  background: var(--bg-alt);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 18px 20px;
  color: var(--text-muted);
  font-size: .92rem;
  margin-bottom: 24px;
}

/* ============================================================
   Certificates
   ============================================================ */
.cert-program-list {
  display: flex;
  flex-direction: column;
  gap: 20px;
}
.cert-program {
  padding: 26px;
  transition: opacity .6s ease, transform .6s ease, border-color .2s ease;
}
.cert-program-head {
  display: flex;
  justify-content: space-between;
  align-items: flex-start;
  gap: 20px;
  flex-wrap: wrap;
}
.cert-program h3,
.cert-card h3 {
  margin: 4px 0 8px;
  font-size: 1.24rem;
  letter-spacing: -.015em;
}
.cert-card h3 { font-size: 1.06rem; }
.cert-issuer {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .74rem;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--accent);
  margin: 0;
}
.cert-meta {
  color: var(--text-muted);
  font-size: .88rem;
  margin: 0;
}
.cert-id {
  font-size: .74rem;
  color: var(--text-muted);
  font-family: 'IBM Plex Mono', monospace;
  margin: 10px 0 0;
  word-break: break-all;
  line-height: 1.5;
}
.cert-id span { text-transform: uppercase; letter-spacing: .06em; opacity: .75; }

.cert-actions { display: flex; gap: 9px; flex-wrap: wrap; }
.cert-link {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  font-size: .82rem;
  font-weight: 600;
  padding: 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  white-space: nowrap;
  transition: border-color .2s ease, color .2s ease, background .2s ease;
}
.cert-link svg { width: 13px; height: 13px; }
.cert-link:hover { border-color: var(--accent); color: var(--accent); }
.cert-link.primary {
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  border-color: color-mix(in srgb, var(--accent) 45%, transparent);
  color: var(--accent);
}
.cert-link.primary:hover { background: color-mix(in srgb, var(--accent) 20%, transparent); }

.cert-skills { margin-top: 16px; }

.cert-expand {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  margin-top: 18px;
  padding: 8px 13px 8px 14px;
  border-radius: 8px;
  border: 1px solid var(--border);
  background: transparent;
  color: var(--text-muted);
  font-size: .84rem;
  font-weight: 600;
  transition: color .2s ease, border-color .2s ease;
}
.cert-expand:hover { color: var(--accent); border-color: var(--accent); }
.cert-expand svg { width: 15px; height: 15px; transition: transform .3s var(--ease); }
.cert-expand.open svg { transform: rotate(180deg); }

.cert-courses {
  list-style: none;
  margin: 18px 0 0;
  padding: 0;
  border-top: 1px solid var(--border);
}
.cert-courses li {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 15px 0;
  border-bottom: 1px solid var(--border);
}
.cert-courses li:last-child { border-bottom: 0; padding-bottom: 0; }
.cert-course-main { flex: 1 1 260px; min-width: 0; }
.cert-course-title { display: block; font-weight: 600; font-size: .95rem; line-height: 1.45; }
.cert-course-date {
  display: block;
  margin-top: 3px;
  font-size: .8rem;
  color: var(--text-muted);
  font-family: 'IBM Plex Mono', monospace;
}
.cert-course-links { display: flex; gap: 8px; flex-wrap: wrap; }
.cert-course-links .cert-link { padding: 6px 11px; font-size: .77rem; }

.cert-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 20px;
}
.cert-card {
  padding: 24px;
  display: flex;
  flex-direction: column;
  transition: opacity .6s ease, transform .6s ease, border-color .2s ease;
}
.cert-card .cert-actions { margin-top: auto; padding-top: 18px; }

@media (max-width: 620px) {
  .cert-program-head { flex-direction: column; gap: 14px; }
  .cert-courses li { align-items: flex-start; }
}

/* Evidence badge under a skill group */
.skill-evidence {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  font-size: .76rem;
  font-weight: 600;
  line-height: 1.4;
  color: var(--text-muted);
  transition: color .2s ease;
}
.skill-evidence:hover { color: var(--accent); }
.skill-evidence svg {
  width: 13px; height: 13px;
  flex: none;
  color: var(--accent);
}

/* Several evidence badges under one skill group */
.skill-evidence-list {
  display: flex;
  flex-direction: column;
  gap: 6px;
  margin-top: auto;
  padding-top: 16px;
}

/* ============================================================
   Education timeline
   ============================================================ */
.timeline {
  list-style: none;
  margin: 0;
  padding: 0 0 0 30px;
  position: relative;
  max-width: 720px;
}
.timeline::before {
  content: "";
  position: absolute;
  left: 5px;
  top: 8px;
  bottom: 8px;
  width: 2px;
  background: var(--border);
}
.timeline-item {
  position: relative;
  padding: 0 0 30px;
}
.timeline-item:last-child { padding-bottom: 0; }
/* solid dot rather than a ring, so it doesn't depend on the
   section's background colour */
.timeline-item::before {
  content: "";
  position: absolute;
  left: -29px;
  top: 7px;
  width: 10px; height: 10px;
  border-radius: 50%;
  background: var(--text-muted);
}
.timeline-item.current::before {
  background: var(--accent);
  box-shadow: 0 0 0 4px color-mix(in srgb, var(--accent) 20%, transparent);
}
.timeline-period {
  font-family: 'IBM Plex Mono', monospace;
  font-size: .78rem;
  letter-spacing: .04em;
  color: var(--text-muted);
  margin: 0 0 6px;
}
.timeline-now {
  display: inline-block;
  margin-left: 6px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 600;
  background: color-mix(in srgb, var(--accent) 14%, transparent);
  color: var(--accent);
}
.timeline-item h3 {
  margin: 0 0 5px;
  font-size: 1.08rem;
  letter-spacing: -.01em;
}
.timeline-org {
  margin: 0;
  color: var(--text-muted);
  font-size: .93rem;
}

/* Experience entries reuse the timeline */
.timeline-kind {
  display: inline-block;
  margin-left: 8px;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: .68rem;
  font-weight: 600;
  letter-spacing: .02em;
  background: var(--bg-alt);
  border: 1px solid var(--border);
  color: var(--text-muted);
}
.timeline-note {
  margin: 7px 0 0;
  color: var(--text-muted);
  font-size: .9rem;
  line-height: 1.6;
}
.timeline-item .cert-link { margin-top: 12px; }

/* ---------- Legal pages ---------- */
.legal { max-width: 760px; }
.legal h2 { font-size: 1.05rem; margin: 30px 0 8px; letter-spacing: -.01em; }
.legal h2:first-child { margin-top: 0; }
.legal p { color: var(--text-muted); line-height: 1.75; margin: 0 0 12px; font-size: .95rem; }
.legal a { color: var(--accent); }
.legal-todo { color: #c8891f; font-weight: 600; }
.footer-legal { margin-top: 8px; }
.footer-legal a { color: var(--text-muted); font-size: .85rem; }
.footer-legal a:hover { color: var(--accent); }
.footer-legal span { color: var(--text-muted); margin: 0 6px; font-size: .85rem; }