/* ============================================================================
   Nick Kostowski — styles.css
   Dark-first editorial design system. No framework, no webfonts, no CDN.

   0.  Tokens
   1.  Reset & base
   2.  Layout primitives
   3.  Buttons, chips, links
   4.  Header & navigation
   5.  Hero
   6.  Section heads & common components
   7.  Capabilities
   8.  Outcomes & value list
   9.  Offers
   10. Projects
   11. Skills
   12. Industries
   13. Certificates
   14. Timeline
   15. Contact
   16. Footer
   17. Reveal animation
   18. Responsive
   19. Print
   ========================================================================= */

/* ────────────────────────────────────────────────────────────── 0 · TOKENS */

/* White (light) is the default theme; [data-theme="dark"] on <html> switches
   to the Black version. Both share geometry/type/motion tokens. */

:root {
  color-scheme: light;

  /* surfaces */
  --bg:          #FFFFFF;
  --bg-elev:     #FFFFFF;
  --bg-elev-2:   #F3F6FA;
  --line:        rgba(10, 15, 25, .09);
  --line-strong: rgba(10, 15, 25, .17);

  /* text */
  --text:        #10151D;
  --text-dim:    #38475A;
  --muted:       #55657A;
  --faint:       #6A778C;

  /* accents */
  --accent:      #0A7BA6;
  --accent-2:    #6D28D9;
  --accent-soft: rgba(10, 123, 166, .09);
  --accent-soft2:rgba(109, 40, 217, .09);
  --grad:        linear-gradient(110deg, #0891B2 0%, #7C3AED 100%);
  --grad-text:   linear-gradient(100deg, #0E7490 0%, #6D28D9 60%, #5B21B6 100%);

  /* semantic */
  --expert:      #B45309;
  --ok:          #047857;

  /* derived surfaces — light theme */
  --bg-sheen:    rgba(10, 15, 25, .022);
  --grid-line:   rgba(10, 15, 25, .05);
  --hover-soft:  rgba(10, 15, 25, .045);
  --header-bg:   rgba(255, 255, 255, .86);
  --drawer-bg:   rgba(255, 255, 255, .985);
  --footer-bg:   #EDF1F6;
  --selected-fg: #0B0F14;

  /* geometry */
  --radius:      14px;
  --radius-sm:   9px;
  --radius-lg:   22px;
  --maxw:        1200px;
  --gutter:      clamp(1.25rem, 4vw, 2.5rem);
  --section-gap: clamp(3.5rem, 8vw, 7rem);

  /* type */
  --font: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto,
          "Helvetica Neue", Arial, "Noto Sans", sans-serif;
  --mono: ui-monospace, SFMono-Regular, "SF Mono", Menlo, Consolas,
          "Liberation Mono", monospace;

  /* motion */
  --t-fast: 160ms;
  --t:      280ms;
  --t-slow: 560ms;
  --ease:   cubic-bezier(.22, .61, .36, 1);

  --header-h: 68px;
}

[data-theme="dark"] {
  color-scheme: dark;

  /* surfaces */
  --bg:          #0B0F14;
  --bg-elev:     #111823;
  --bg-elev-2:   #16202D;
  --line:        rgba(255, 255, 255, .08);
  --line-strong: rgba(255, 255, 255, .16);

  /* text */
  --text:        #E8EDF4;
  --text-dim:    #B4C0D0;
  --muted:       #93A1B4;
  --faint:       #7A8A9C;

  /* accents */
  --accent:      #22D3EE;
  --accent-2:    #A78BFA;
  --accent-soft: rgba(34, 211, 238, .10);
  --accent-soft2:rgba(167, 139, 250, .10);
  --grad:        linear-gradient(110deg, #22D3EE 0%, #A78BFA 100%);
  --grad-text:   linear-gradient(100deg, #67E8F9 0%, #C4B5FD 60%, #A78BFA 100%);

  /* semantic */
  --expert:      #FBBF24;
  --ok:          #34D399;

  /* derived surfaces — black theme */
  --bg-sheen:    rgba(255, 255, 255, .016);
  --grid-line:   rgba(255, 255, 255, .028);
  --hover-soft:  rgba(255, 255, 255, .05);
  --header-bg:   rgba(11, 15, 20, .82);
  --drawer-bg:   rgba(9, 13, 18, .985);
  --footer-bg:   #080B0F;
  --selected-fg: #FFFFFF;
}

/* ─────────────────────────────────────────────────── 1 · RESET & BASE ── */

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

html {
  -webkit-text-size-adjust: 100%;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-h) + 16px);
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  font-size: 17px;
  line-height: 1.7;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

body.nav-open { overflow: hidden; }

h1, h2, h3, h4 {
  margin: 0 0 .5em;
  line-height: 1.15;
  letter-spacing: -.02em;
  font-weight: 700;
  text-wrap: balance;
}

h2 { font-size: clamp(1.85rem, 3.6vw, 2.9rem); }
h3 { font-size: clamp(1.15rem, 1.9vw, 1.4rem); }

p { margin: 0 0 1rem; }
p:last-child { margin-bottom: 0; }

a { color: var(--accent); text-decoration: none; }
a:hover { color: var(--accent-2); }

ul, ol { margin: 0; padding: 0; list-style: none; }

img, svg { max-width: 100%; }
svg { display: block; flex-shrink: 0; }

/* Safety net: an inline <svg> with only a viewBox has no intrinsic size and
   would otherwise stretch to fill its container. */
svg:not([width]):not([height]) { width: 1em; height: 1em; }

code {
  font-family: var(--mono);
  font-size: .88em;
  background: var(--bg-elev-2);
  border: 1px solid var(--line);
  border-radius: 5px;
  padding: .1em .4em;
}

strong { color: var(--text); font-weight: 650; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 4px;
}

::selection { background: rgba(34, 211, 238, .28); color: var(--selected-fg); }

.skip-link {
  position: absolute;
  left: -9999px;
  top: 0;
  z-index: 200;
  background: var(--accent);
  color: #04222A;
  padding: .7rem 1.2rem;
  font-weight: 650;
  border-radius: 0 0 var(--radius-sm) 0;
}
.skip-link:focus { left: 0; color: #04222A; }

.visually-hidden {
  position: absolute !important;
  width: 1px; height: 1px;
  margin: -1px; padding: 0;
  overflow: hidden;
  clip: rect(0 0 0 0);
  clip-path: inset(50%);
  white-space: nowrap;
}

/* ─────────────────────────────────────────────── 2 · LAYOUT PRIMITIVES ── */

.container {
  width: 100%;
  max-width: var(--maxw);
  margin-inline: auto;
  padding-inline: var(--gutter);
}

.section {
  padding-block: var(--section-gap);
  position: relative;
}

.section-alt {
  background:
    linear-gradient(180deg, transparent, var(--bg-sheen) 12%, var(--bg-sheen) 88%, transparent);
  border-block: 1px solid var(--line);
}

.grid { display: grid; gap: clamp(1rem, 2vw, 1.5rem); }
.grid-2 { grid-template-columns: repeat(auto-fit, minmax(320px, 1fr)); }
.grid-3 { grid-template-columns: repeat(auto-fit, minmax(285px, 1fr)); }

.subhead {
  font-size: 1.15rem;
  margin: 0 0 1rem;
  padding-bottom: .6rem;
  border-bottom: 1px solid var(--line);
  letter-spacing: .01em;
}

.eyebrow {
  margin: 0 0 .7rem;
  font-family: var(--mono);
  font-size: .74rem;
  letter-spacing: .16em;
  text-transform: uppercase;
  color: var(--accent);
}

.lead, .section-lead {
  color: var(--text-dim);
  font-size: clamp(1rem, 1.35vw, 1.1rem);
  max-width: 68ch;
}

.section-head { margin-bottom: clamp(2rem, 4vw, 3rem); }

.panel {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 2.5vw, 2rem);
}

.panel-text { color: var(--text-dim); font-size: .96rem; }

/* ──────────────────────────────────────── 3 · BUTTONS, CHIPS & LINKS ── */

.btn {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  padding: .85rem 1.5rem;
  border-radius: 100px;
  font-weight: 620;
  font-size: .96rem;
  border: 1px solid transparent;
  cursor: pointer;
  transition: transform var(--t) var(--ease),
              box-shadow var(--t) var(--ease),
              background-color var(--t) var(--ease),
              border-color var(--t) var(--ease),
              color var(--t) var(--ease);
}
.btn:hover { transform: translateY(-2px); }
.btn:active { transform: translateY(0); }

.btn-primary {
  background: var(--grad);
  color: #06121A;
  box-shadow: 0 6px 26px -10px rgba(34, 211, 238, .65);
}
.btn-primary:hover {
  color: #06121A;
  box-shadow: 0 10px 34px -10px rgba(167, 139, 250, .75);
}

.btn-ghost {
  border-color: var(--line-strong);
  color: var(--text);
  background: rgba(255,255,255,.02);
}
.btn-ghost:hover {
  border-color: var(--accent);
  color: var(--accent);
  background: var(--accent-soft);
}

.chip {
  display: inline-block;
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .04em;
  padding: .28rem .6rem;
  border-radius: 100px;
  border: 1px solid var(--line);
  background: var(--bg-elev-2);
  color: var(--text-dim);
  white-space: nowrap;
}

/* ──────────────────────────────────────────── 4 · HEADER & NAVIGATION ── */

.site-header {
  position: sticky;
  top: 0;
  z-index: 100;
  height: var(--header-h);
  display: flex;
  align-items: center;
  border-bottom: 1px solid transparent;
  transition: background-color var(--t) var(--ease),
              border-color var(--t) var(--ease),
              backdrop-filter var(--t) var(--ease);
}
.site-header.is-stuck {
  background: var(--header-bg);
  backdrop-filter: blur(14px) saturate(150%);
  border-bottom-color: var(--line);
}

.header-inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.brand {
  display: inline-flex;
  align-items: center;
  gap: .7rem;
  color: var(--text);
  flex-shrink: 0;
}
.brand:hover { color: var(--text); }

.brand-mark {
  display: block;
  width: 36px; height: 36px;
  flex-shrink: 0;
}

.brand-mark img {
  display: block;
  width: 100%; height: 100%;
}

.brand-text { display: flex; flex-direction: column; line-height: 1.15; }
.brand-text strong { font-size: .95rem; font-weight: 650; }
.brand-text span {
  font-size: .7rem;
  color: var(--faint);
  letter-spacing: .1em;
  text-transform: uppercase;
}

.nav-toggle {
  display: none;
  width: 42px; height: 42px;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: transparent;
  cursor: pointer;
  position: relative;
  padding: 0;
}
.nav-toggle-bar,
.nav-toggle-bar::before,
.nav-toggle-bar::after {
  position: absolute;
  left: 50%; top: 50%;
  width: 17px; height: 1.7px;
  background: var(--text);
  border-radius: 2px;
  transform: translate(-50%, -50%);
  transition: transform var(--t) var(--ease), opacity var(--t-fast) var(--ease);
}
.nav-toggle-bar::before { content: ""; transform: translate(-50%, -6px); }
.nav-toggle-bar::after  { content: ""; transform: translate(-50%, 6px); }

.nav-toggle[aria-expanded="true"] .nav-toggle-bar { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::before { transform: translate(-50%, 0) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-bar::after  { transform: translate(-50%, 0) rotate(-45deg); }

.theme-toggle {
  display: inline-grid;
  place-items: center;
  width: 38px;
  height: 38px;
  flex-shrink: 0;
  border: 1px solid var(--line-strong);
  border-radius: 10px;
  background: transparent;
  color: var(--muted);
  cursor: pointer;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}
.theme-toggle:hover {
  color: var(--text);
  border-color: var(--accent);
  background: var(--hover-soft);
}
.theme-toggle svg { width: 17px; height: 17px; }
.theme-toggle .icon-sun { display: block; }
.theme-toggle .icon-moon { display: none; }

[data-theme="dark"] .theme-toggle .icon-sun { display: none; }
[data-theme="dark"] .theme-toggle .icon-moon { display: block; }

.nav-list {
  display: flex;
  align-items: center;
  gap: .15rem;
}

.nav-list a {
  display: block;
  padding: .45rem .7rem;
  border-radius: 8px;
  font-size: .855rem;
  font-weight: 500;
  color: var(--muted);
  white-space: nowrap;
  transition: color var(--t-fast) var(--ease), background-color var(--t-fast) var(--ease);
}
.nav-list a:hover { color: var(--text); background: var(--hover-soft); }

.nav-list a[aria-current="true"] { color: var(--accent); }

.nav-list a[aria-current="true"]::after {
  content: "";
  display: block;
  height: 1.5px;
  margin-top: 3px;
  background: var(--grad);
  border-radius: 2px;
}

/* ────────────────────────────────────────────────────────────── 5 · HERO */

.hero {
  position: relative;
  padding-block: clamp(3.5rem, 10vw, 8rem) clamp(3rem, 7vw, 5.5rem);
  overflow: hidden;
  border-bottom: 1px solid var(--line);
}

.hero-grid-bg {
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--grid-line) 1px, transparent 1px),
    linear-gradient(90deg, var(--grid-line) 1px, transparent 1px);
  background-size: 62px 62px;
  mask-image: radial-gradient(ellipse 92% 68% at 26% 8%, #000 10%, transparent 72%);
  -webkit-mask-image: radial-gradient(ellipse 92% 68% at 26% 8%, #000 10%, transparent 72%);
  pointer-events: none;
}

.hero::before {
  content: "";
  position: absolute;
  top: -28%; left: -12%;
  width: 62vw; height: 62vw;
  max-width: 820px; max-height: 820px;
  background: radial-gradient(circle, rgba(34,211,238,.13), transparent 64%);
  pointer-events: none;
}
.hero::after {
  content: "";
  position: absolute;
  bottom: -30%; right: -14%;
  width: 58vw; height: 58vw;
  max-width: 760px; max-height: 760px;
  background: radial-gradient(circle, rgba(167,139,250,.11), transparent 66%);
  pointer-events: none;
}

.hero-inner { position: relative; z-index: 1; }

.hero-availability {
  display: inline-flex;
  align-items: center;
  gap: .55rem;
  font-size: .8rem;
  font-weight: 550;
  color: var(--text-dim);
  background: rgba(52, 211, 153, .07);
  border: 1px solid rgba(52, 211, 153, .26);
  border-radius: 100px;
  padding: .38rem .9rem;
  margin-bottom: 1.8rem;
}

.dot {
  width: 7px; height: 7px;
  border-radius: 50%;
  background: var(--ok);
  box-shadow: 0 0 0 0 rgba(52, 211, 153, .55);
  animation: pulse 2.6s var(--ease) infinite;
}
@keyframes pulse {
  0%   { box-shadow: 0 0 0 0 rgba(52,211,153,.5); }
  70%  { box-shadow: 0 0 0 9px rgba(52,211,153,0); }
  100% { box-shadow: 0 0 0 0 rgba(52,211,153,0); }
}

.hero-title {
  margin: 0 0 .5rem;
  font-size: clamp(2.6rem, 8.2vw, 5.6rem);
  font-weight: 800;
  letter-spacing: -.038em;
  line-height: .98;
  display: flex;
  flex-wrap: wrap;
  gap: 0 .35em;
}
.hero-last {
  background: var(--grad-text);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.hero-role {
  display: flex;
  flex-wrap: wrap;
  align-items: baseline;
  gap: .45rem;
  margin: 0 0 1.5rem;
  font-size: clamp(1.05rem, 2.4vw, 1.6rem);
  font-weight: 600;
  color: var(--text-dim);
  min-height: 1.6em;
}
.hero-role-static { color: var(--text); }
.hero-rotator {
  position: relative;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  transition: opacity var(--t) var(--ease), transform var(--t) var(--ease);
}
.hero-rotator.is-fading { opacity: 0; transform: translateY(-.18em); }

.hero-tagline {
  max-width: 60ch;
  color: var(--text-dim);
  font-size: clamp(1.02rem, 1.5vw, 1.15rem);
  margin-bottom: 2.2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: .8rem;
  margin-bottom: clamp(2.5rem, 5vw, 4rem);
}

.hero-facts {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.2rem 2rem;
  margin: 0;
  padding-top: 1.8rem;
  border-top: 1px solid var(--line);
}
.hero-fact dt {
  font-family: var(--mono);
  font-size: .68rem;
  letter-spacing: .14em;
  text-transform: uppercase;
  color: var(--faint);
  margin-bottom: .3rem;
}
.hero-fact dd { margin: 0; font-size: .95rem; color: var(--text-dim); }

.scroll-hint {
  display: grid;
  place-items: center;
  width: 100%;
  height: 54px;
  margin-top: clamp(1.5rem, 3vw, 2.5rem);
}
.scroll-hint span {
  display: block;
  width: 22px; height: 34px;
  border: 1.5px solid var(--line-strong);
  border-radius: 100px;
  position: relative;
}
.scroll-hint span::after {
  content: "";
  position: absolute;
  left: 50%; top: 7px;
  width: 3px; height: 7px;
  margin-left: -1.5px;
  border-radius: 2px;
  background: var(--accent);
  animation: scroll-dot 1.9s var(--ease) infinite;
}
@keyframes scroll-dot {
  0%, 100% { transform: translateY(0);    opacity: 1; }
  60%      { transform: translateY(12px); opacity: .15; }
}

/* ────────────────────────────── 6 · SECTION HEADS & COMMON COMPONENTS */

.card {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.3rem, 2.2vw, 1.75rem);
  transition: border-color var(--t) var(--ease),
              background-color var(--t) var(--ease),
              transform var(--t) var(--ease);
}
.card:hover {
  border-color: var(--line-strong);
  background: var(--bg-elev-2);
  transform: translateY(-3px);
}

.tag-row { display: flex; flex-wrap: wrap; gap: .4rem; }

/* ─────────────────────────────────────────────────────── 7 · CAPABILITIES */

.cap-card { display: flex; flex-direction: column; gap: .85rem; }

.cap-num {
  font-family: var(--mono);
  font-size: .74rem;
  font-weight: 700;
  letter-spacing: .12em;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
}

.cap-title { font-size: 1.16rem; margin: 0; }
.cap-text  { color: var(--text-dim); font-size: .95rem; margin: 0; }

.cap-points {
  display: flex;
  flex-direction: column;
  gap: .35rem;
  margin-top: auto;
  padding-top: .5rem;
  border-top: 1px solid var(--line);
}
.cap-points li {
  position: relative;
  padding-left: 1.05rem;
  font-size: .84rem;
  color: var(--muted);
  font-family: var(--mono);
}
.cap-points li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 5px; height: 5px;
  border-radius: 50%;
  background: var(--accent);
  opacity: .8;
}

/* ─────────────────────────────────────────── 8 · OUTCOMES & VALUE LIST */

.outcomes {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(230px, 1fr));
  gap: clamp(1rem, 2vw, 1.4rem);
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.outcome {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.3rem, 2.2vw, 1.7rem);
  display: flex;
  flex-direction: column;
  gap: .55rem;
}

.outcome-value {
  font-size: clamp(2.4rem, 5vw, 3.3rem);
  font-weight: 800;
  letter-spacing: -.035em;
  line-height: 1;
  background: var(--grad);
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent;
  font-variant-numeric: tabular-nums;
}
.outcome-value sup {
  font-size: .45em;
  font-weight: 700;
  vertical-align: super;
}

.outcome-label {
  font-size: .82rem;
  font-weight: 620;
  color: var(--accent);
  letter-spacing: .01em;
}
.outcome-text { font-size: .88rem; color: var(--muted); margin: 0; }

.value-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: .85rem 1.5rem;
}
.value-list li {
  position: relative;
  padding-left: 1.9rem;
  color: var(--text-dim);
  font-size: .95rem;
}
.value-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .38em;
  width: 15px; height: 15px;
  border-radius: 50%;
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .45);
}
.value-list li::after {
  content: "";
  position: absolute;
  left: 4.5px; top: .74em;
  width: 6px; height: 3px;
  border-left: 1.6px solid var(--accent);
  border-bottom: 1.6px solid var(--accent);
  transform: rotate(-45deg);
}

/* ────────────────────────────────────────────────────────────── 9 · OFFERS */

.offers {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(330px, 1fr));
  gap: clamp(1rem, 2vw, 1.5rem);
}

.offer {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.4rem, 2.4vw, 1.9rem);
  display: flex;
  flex-direction: column;
  gap: .8rem;
  position: relative;
  overflow: hidden;
  transition: border-color var(--t) var(--ease), transform var(--t) var(--ease);
}
.offer::before {
  content: "";
  position: absolute;
  inset: 0 auto 0 0;
  width: 2px;
  background: var(--grad);
  opacity: .55;
  transition: opacity var(--t) var(--ease);
}
.offer:hover { border-color: var(--line-strong); transform: translateY(-3px); }
.offer:hover::before { opacity: 1; }

.offer h3 { margin: 0; font-size: 1.1rem; }
.offer-text { color: var(--text-dim); font-size: .94rem; margin: 0; }

.offer-deliverables {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-top: .3rem;
  padding-top: .9rem;
  border-top: 1px solid var(--line);
}
.offer-deliverables li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .87rem;
  color: var(--muted);
}
.offer-deliverables li::before {
  content: "";
  position: absolute;
  left: 0; top: .62em;
  width: 6px; height: 1.5px;
  background: var(--accent-2);
}

/* ─────────────────────────────────────────────────────────── 10 · PROJECTS */

.project-toolbar {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  margin-bottom: clamp(1.5rem, 3vw, 2.2rem);
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}

.filters { display: flex; flex-wrap: wrap; gap: .5rem; }

.filter-btn {
  font: inherit;
  font-size: .84rem;
  font-weight: 550;
  color: var(--muted);
  background: transparent;
  border: 1px solid var(--line);
  border-radius: 100px;
  padding: .42rem .95rem;
  cursor: pointer;
  transition: color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease),
              background-color var(--t-fast) var(--ease);
}
.filter-btn:hover { color: var(--text); border-color: var(--line-strong); }

.filter-btn[aria-pressed="true"] {
  color: #06121A;
  background: var(--grad);
  border-color: transparent;
  font-weight: 650;
}

.project-count {
  margin: 0;
  font-family: var(--mono);
  font-size: .76rem;
  color: var(--faint);
  letter-spacing: .04em;
}

.projects {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: clamp(1rem, 2vw, 1.4rem);
  align-items: start;
}

.project {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.3rem, 2.2vw, 1.7rem);
  display: flex;
  flex-direction: column;
  gap: .7rem;
  position: relative;
  transition: border-color var(--t) var(--ease),
              background-color var(--t) var(--ease),
              opacity var(--t) var(--ease);
}
.project[hidden] { display: none; }
.project:hover { border-color: var(--line-strong); }

.project.is-tier1 {
  background: linear-gradient(168deg, var(--bg-elev-2), var(--bg-elev) 46%);
  border-color: rgba(34, 211, 238, .17);
}

.project-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: .8rem;
}

.project-client {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .11em;
  text-transform: uppercase;
  color: var(--accent);
}

.project-badge {
  font-family: var(--mono);
  font-size: .62rem;
  letter-spacing: .1em;
  padding: .22rem .5rem;
  border-radius: 100px;
  border: 1px solid var(--line-strong);
  color: var(--faint);
  white-space: nowrap;
  flex-shrink: 0;
}
.project-badge.named {
  border-color: rgba(52, 211, 153, .4);
  color: var(--ok);
}

.project h3 { margin: 0; font-size: 1.1rem; }

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: .3rem .9rem;
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--faint);
}
.project-meta span { display: inline-flex; gap: .35rem; }

.project-summary { color: var(--text-dim); font-size: .93rem; margin: 0; }

.project-toggle {
  align-self: flex-start;
  display: inline-flex;
  align-items: center;
  gap: .45rem;
  margin-top: .3rem;
  padding: .45rem .9rem;
  font: inherit;
  font-size: .84rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .26);
  border-radius: 100px;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease),
              border-color var(--t-fast) var(--ease);
}
.project-toggle:hover {
  background: rgba(34, 211, 238, .17);
  border-color: var(--accent);
}
.project-toggle svg {
  width: 13px; height: 13px;
  transition: transform var(--t) var(--ease);
}.project-toggle[aria-expanded="true"] svg { transform: rotate(180deg); }

.project-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-slow) var(--ease);
}
.project-toggle[aria-expanded="true"] + .project-detail { grid-template-rows: 1fr; }

.project-detail-inner {
  overflow: hidden;
  min-height: 0;
}
.project-detail-pad {
  display: flex;
  flex-direction: column;
  gap: 1.1rem;
  padding-top: 1.1rem;
  margin-top: 1.1rem;
  border-top: 1px solid var(--line);
}

.pd-block h4 {
  margin: 0 0 .5rem;
  font-size: .74rem;
  font-family: var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--accent-2);
  font-weight: 650;
}
.pd-block p { font-size: .9rem; color: var(--text-dim); margin: 0; }

.pd-list { display: flex; flex-direction: column; gap: .38rem; }
.pd-list li {
  position: relative;
  padding-left: 1.15rem;
  font-size: .885rem;
  color: var(--muted);
}
.pd-list li::before {
  content: "";
  position: absolute;
  left: 0; top: .6em;
  width: 6px; height: 6px;
  border-radius: 50%;
  border: 1px solid var(--accent-2);
}
.pd-block--results .pd-list li::before {
  background: var(--accent-2);
  border-color: var(--accent-2);
}

.project-sub {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  padding-top: 1rem;
  border-top: 1px dashed var(--line);
}
.project-sub h4 {
  margin: 0;
  font-size: .7rem;
  font-family: var(--mono);
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--faint);
}
.project-sub ul { display: flex; flex-direction: column; gap: .3rem; }
.project-sub li {
  position: relative;
  padding-left: 1rem;
  font-size: .84rem;
  color: var(--muted);
}
.project-sub li::before {
  content: "›";
  position: absolute;
  left: 0;
  color: var(--accent);
}

.project-empty {
  grid-column: 1 / -1;
  text-align: center;
  padding: 3rem 1rem;
  color: var(--faint);
  border: 1px dashed var(--line);
  border-radius: var(--radius);
}

/* ──────────────────────────────────────────────────────────── 11 · SKILLS */

.legend {
  display: flex;
  flex-wrap: wrap;
  gap: .6rem 1.4rem;
  margin-bottom: 2rem;
  padding-bottom: 1.2rem;
  border-bottom: 1px solid var(--line);
}
.legend li {
  display: inline-flex;
  align-items: center;
  gap: .5rem;
  font-size: .85rem;
  color: var(--muted);
}
.legend i {
  width: 9px; height: 9px;
  border-radius: 3px;
  flex-shrink: 0;
}
.legend .lv-expert          { background: var(--expert); }
.legend .lv-fortgeschritten { background: var(--accent); }
.legend .lv-praxis          { background: var(--faint); }

.skills {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(340px, 1fr));
  gap: clamp(1rem, 2vw, 1.4rem);
}

.skill-group {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  padding: clamp(1.2rem, 2vw, 1.6rem);
  display: flex;
  flex-direction: column;
  gap: .55rem;
}
.skill-group h3 {
  margin: 0 0 .3rem;
  font-size: 1.02rem;
  padding-bottom: .65rem;
  border-bottom: 1px solid var(--line);
}

.skill-items { display: flex; flex-direction: column; gap: .4rem; }

.skill-item {
  display: grid;
  grid-template-columns: 4px 1fr;
  gap: .7rem;
  align-items: start;
  font-size: .875rem;
  line-height: 1.5;
}
.skill-bar {
  width: 4px;
  height: 100%;
  min-height: 1.3em;
  border-radius: 3px;
  align-self: stretch;
}
.skill-item.lv-expert          .skill-bar { background: var(--expert); }
.skill-item.lv-fortgeschritten .skill-bar { background: var(--accent); }
.skill-item.lv-praxis          .skill-bar { background: var(--faint); }
.skill-item.lv-expert          .skill-text { color: var(--text); }
.skill-item.lv-fortgeschritten .skill-text { color: var(--text-dim); }
.skill-item.lv-praxis          .skill-text { color: var(--muted); }
.skill-text { min-width: 0; }

.tech-group h3 {
  font-size: .95rem;
  margin-bottom: .8rem;
  color: var(--text-dim);
}
.tech-group .tag-row { gap: .4rem; }

/* ──────────────────────────────────────────────────────── 12 · INDUSTRIES */

.industry { display: flex; flex-direction: column; gap: .7rem; }

.industry-head {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: 1rem;
  flex-wrap: wrap;
}
.industry-head h3 { margin: 0; font-size: 1.12rem; }
.industry-depth {
  font-family: var(--mono);
  font-size: .7rem;
  letter-spacing: .06em;
  color: var(--accent);
  white-space: nowrap;
}
.industry-text { color: var(--text-dim); font-size: .93rem; margin: 0; }
.industry-clients {
  margin-top: auto;
  padding-top: .8rem;
  border-top: 1px solid var(--line);
  font-size: .8rem;
  color: var(--faint);
  font-family: var(--mono);
  line-height: 1.55;
}
.industry-clients b {
  color: var(--muted);
  font-weight: 600;
  font-family: var(--font);
}

/* ────────────────────────────────────────────────────── 13 · CERTIFICATES */

.certs { display: flex; flex-direction: column; gap: .9rem; }

.cert {
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius);
  overflow: hidden;
}

.cert-toggle {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 1.1rem clamp(1.1rem, 2vw, 1.5rem);
  font: inherit;
  font-size: 1.02rem;
  font-weight: 620;
  text-align: left;
  color: var(--text);
  background: transparent;
  border: 0;
  cursor: pointer;
  transition: background-color var(--t-fast) var(--ease);
}
.cert-toggle:hover { background: var(--hover-soft); }

.cert-toggle-label { display: flex; align-items: center; gap: .8rem; }

.cert-count {
  font-family: var(--mono);
  font-size: .7rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-soft);
  border: 1px solid rgba(34, 211, 238, .24);
  border-radius: 100px;
  padding: .18rem .55rem;
}

.cert-chevron {
  width: 16px; height: 16px;
  flex-shrink: 0;
  color: var(--faint);
  transition: transform var(--t) var(--ease);
}
.cert-toggle[aria-expanded="true"] .cert-chevron { transform: rotate(180deg); }

.cert-detail {
  display: grid;
  grid-template-rows: 0fr;
  transition: grid-template-rows var(--t-slow) var(--ease);
}
.cert-toggle[aria-expanded="true"] + .cert-detail { grid-template-rows: 1fr; }
.cert-detail-inner { overflow: hidden; min-height: 0; }
.cert-list {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));
  gap: .4rem 1.5rem;
  padding: 0 clamp(1.1rem, 2vw, 1.5rem) 1.3rem;
}
.cert-list li {
  position: relative;
  padding-left: 1.35rem;
  font-size: .88rem;
  color: var(--muted);
}
.cert-list li::before {
  content: "";
  position: absolute;
  left: .1rem; top: .55em;
  width: 9px; height: 5px;
  border-left: 1.6px solid var(--ok);
  border-bottom: 1.6px solid var(--ok);
  transform: rotate(-45deg);
}

/* ────────────────────────────────────────────────────────── 14 · TIMELINE */

.timeline {
  position: relative;
  display: flex;
  flex-direction: column;
  gap: 1px;
  margin-bottom: clamp(2rem, 4vw, 3rem);
}

.tl-item {
  position: relative;
  padding: 0 0 2rem 2.4rem;
}
.tl-item::before {
  content: "";
  position: absolute;
  left: 6px; top: .55rem;
  width: 11px; height: 11px;
  border-radius: 50%;
  background: var(--bg);
  border: 2px solid var(--faint);
  z-index: 1;
}
.tl-item.is-current::before {
  border-color: var(--accent);
  background: var(--accent);
  box-shadow: 0 0 0 5px rgba(34, 211, 238, .13);
}
.tl-item::after {
  content: "";
  position: absolute;
  left: 11px; top: 1.4rem; bottom: 0;
  width: 1px;
  background: linear-gradient(180deg, var(--line-strong), var(--line));
}
.tl-item:last-child { padding-bottom: 0; }
.tl-item:last-child::after { display: none; }

.tl-period {
  font-family: var(--mono);
  font-size: .72rem;
  font-weight: 600;
  letter-spacing: .08em;
  color: var(--accent);
  display: block;
  margin-bottom: .25rem;
}
.tl-title { font-size: 1.08rem; margin: 0 0 .2rem; }
.tl-org {
  font-size: .84rem;
  color: var(--muted);
  margin: 0 0 .5rem;
  font-style: italic;
}
.tl-text { font-size: .91rem; color: var(--text-dim); margin: 0 0 .7rem; max-width: 78ch; }
.tl-item.is-condensed .tl-text { font-size: .86rem; color: var(--muted); }

.timeline-extra { margin-bottom: clamp(1rem, 2vw, 1.5rem); }

.edu-item { margin-bottom: 1.2rem; }
.edu-item:last-child { margin-bottom: 0; }
.edu-degree { font-size: .97rem; font-weight: 620; margin: 0; }
.edu-detail { font-size: .87rem; color: var(--text-dim); margin: .1rem 0; }
.edu-org {
  font-size: .87rem;
  color: var(--accent);
  margin: .1rem 0;
}
.edu-period {
  font-family: var(--mono);
  font-size: .72rem;
  color: var(--faint);
}

.langs { display: flex; flex-direction: column; gap: .55rem; }
.lang-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding-bottom: .55rem;
  border-bottom: 1px solid var(--line);
  font-size: .92rem;
}
.lang-item:last-child { border-bottom: 0; padding-bottom: 0; }
.lang-name { color: var(--text); font-weight: 550; }
.lang-level { font-family: var(--mono); font-size: .75rem; color: var(--muted); }

.panel-pub { margin-top: clamp(1rem, 2vw, 1.5rem); }

.pubs { display: grid; gap: .4rem; margin-top: .9rem; }
.pubs li {
  position: relative;
  padding-left: 1.2rem;
  font-size: .875rem;
  color: var(--muted);
}
.pubs li::before {
  content: "";
  position: absolute;
  left: 0; top: .68em;
  width: 4px; height: 4px;
  border-radius: 50%;
  background: var(--accent-2);
}

/* ──────────────────────────────────────────────────────────── 15 · KONTAKT */

.contact { position: relative; overflow: hidden; }
.contact::before {
  content: "";
  position: absolute;
  top: -35%; right: -8%;
  width: 46vw; height: 46vw;
  max-width: 620px; max-height: 620px;
  background: radial-gradient(circle, rgba(34, 211, 238, .10), transparent 66%);
  pointer-events: none;
}

.contact-inner {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(0, 1.05fr);
  gap: clamp(2rem, 5vw, 4rem);
  align-items: start;
}

.contact-lead h2 { font-size: clamp(1.9rem, 4vw, 3rem); }
.contact-lead .section-lead { margin-bottom: 1.8rem; }

.contact-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(210px, 1fr));
  gap: .8rem;
}

.contact-card {
  display: flex;
  align-items: center;
  gap: .9rem;
  padding: 1rem 1.15rem;
  background: var(--bg-elev);
  border: 1px solid var(--line);
  border-radius: var(--radius-sm);
  color: var(--text);
  transition: border-color var(--t) var(--ease),
              background-color var(--t) var(--ease),
              transform var(--t) var(--ease);
}
.contact-card:hover {
  border-color: var(--accent);
  background: var(--bg-elev-2);
  transform: translateY(-2px);
  color: var(--text);
}

.contact-icon {
  display: grid;
  place-items: center;
  width: 38px; height: 38px;
  flex-shrink: 0;
  border-radius: 9px;
  background: var(--accent-soft);
  color: var(--accent);
}

.contact-body { display: flex; flex-direction: column; min-width: 0; }
.contact-label {
  font-family: var(--mono);
  font-size: .64rem;
  letter-spacing: .13em;
  text-transform: uppercase;
  color: var(--faint);
}
.contact-value {
  font-size: .92rem;
  font-weight: 550;
  color: var(--text);
  overflow-wrap: anywhere;
}

.contact-address {
  grid-column: 1 / -1;
  margin: 0;
  padding-top: 1.5rem;
  border-top: 1px solid var(--line);
  font-family: var(--mono);
  font-size: .8rem;
  color: var(--faint);
}

/* ──────────────────────────────────────────────────────────── 16 · FOOTER */

.site-footer {
  padding-block: 2.5rem 3rem;
  border-top: 1px solid var(--line);
  background: var(--footer-bg);
}

.footer-inner {
  display: flex;
  flex-direction: column;
  gap: .5rem;
}
.footer-copy { margin: 0; font-size: .9rem; color: var(--text-dim); }
.footer-meta {
  margin: 0;
  font-family: var(--mono);
  font-size: .78rem;
  color: var(--faint);
}
.footer-note {
  margin: .6rem 0 0;
  font-size: .76rem;
  color: var(--faint);
  max-width: 78ch;
  line-height: 1.6;
}

/* ────────────────────────────────────────────── 17 · REVEAL ANIMATION ── */

.reveal {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity var(--t-slow) var(--ease), transform var(--t-slow) var(--ease);
}
.reveal.is-in { opacity: 1; transform: none; }

/* ──────────────────────────────────────────────────────── 18 · RESPONSIVE */

@media (max-width: 1080px) {
  .nav-list a { padding: .45rem .55rem; font-size: .82rem; }
  .brand-text { display: none; }
}

@media (max-width: 920px) {
  :root { --header-h: 62px; }

  .nav-toggle { display: block; }

  .site-nav {
    position: fixed;
    inset: var(--header-h) 0 0;
    background: var(--drawer-bg);
    backdrop-filter: blur(18px);
    padding: 2rem var(--gutter);
    display: grid;
    align-content: start;
    opacity: 0;
    visibility: hidden;
    transform: translateY(-8px);
    transition: opacity var(--t) var(--ease),
                transform var(--t) var(--ease),
                visibility var(--t);
    overflow-y: auto;
    z-index: -1;
  }
  .site-nav.is-open { opacity: 1; visibility: visible; transform: none; }

  .nav-list { flex-direction: column; align-items: stretch; gap: .2rem; }
  .nav-list a {
    padding: .95rem .8rem;
    font-size: 1.05rem;
    border-bottom: 1px solid var(--line);
    border-radius: 0;
  }
  .nav-list a[aria-current="true"]::after { display: none; }
  .nav-list a[aria-current="true"] {
    color: var(--accent);
    border-left: 2px solid var(--accent);
    padding-left: 1rem;
  }

  .contact-inner { grid-template-columns: 1fr; }
  .brand-text { display: flex; }
}

@media (max-width: 620px) {
  body { font-size: 16px; }
  .hero-title { letter-spacing: -.03em; }
  .hero-actions .btn { width: 100%; justify-content: center; }
  .projects, .skills, .offers { grid-template-columns: 1fr; }
  .project-toolbar { flex-direction: column; align-items: flex-start; }
  .tl-item { padding-left: 1.9rem; }
  .scroll-hint { display: none; }
}

/* ───────────────────────────────────────────────────────────── 19 · PRINT */

@media print {
  :root { --header-h: 0px; color-scheme: light; }

  /* Always print the White version, even when Black is active. */
  html[data-theme="dark"] {
    --bg: #fff; --bg-elev: #fff; --bg-elev-2: #fff;
    --text: #111; --text-dim: #111; --muted: #222; --faint: #444;
    --accent: #0A7BA6; --accent-2: #5B21B6;
    --line: rgba(0,0,0,.12); --line-strong: rgba(0,0,0,.2);
  }

  html { scroll-behavior: auto; }

  body {
    background: #fff;
    color: #111;
    font-size: 10.5pt;
    line-height: 1.45;
  }

  .site-header, .scroll-hint, .project-toolbar,
  .project-toggle, .cert-toggle, .hero-actions, .skip-link { display: none !important; }

  .hero::before, .hero::after, .hero-grid-bg, .contact::before { display: none; }

  .hero, .section, .section-alt {
    padding-block: 1.2rem;
    background: none !important;
    border: 0;
    page-break-inside: avoid;
  }

  .project, .offer, .cap-card, .card, .panel, .skill-group,
  .outcome, .industry, .cert, .contact-card {
    background: none !important;
    border: 1px solid #ccc !important;
    break-inside: avoid;
    page-break-inside: avoid;
  }

  .hero-title, .outcome-value, .cap-num, .hero-rotator, .hero-availability {
    background: none !important;
    color: #111 !important;
    -webkit-text-fill-color: #111;
  }

  h1, h2, h3 { break-after: avoid; page-break-after: avoid; }
  .hero, #projekte, #skills, #werdegang { break-before: auto; }

  .project-detail, .cert-detail {
    grid-template-rows: 1fr !important;
  }
  .project-detail-inner, .cert-detail-inner {
    overflow: visible !important;
    max-height: none !important;
  }

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

  a[href^="http"]::after {
    content: " (" attr(href) ")";
    font-size: 8pt;
    color: #555;
    word-break: break-all;
  }

  @page { margin: 14mm; }
}

/* ───────────────────────────────────────── 20 · REDUCED MOTION PREF ── */

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

  *, *::before, *::after {
    animation-duration: .001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: .001ms !important;
  }

  .reveal { opacity: 1; transform: none; }
  .project-detail, .cert-detail { transition: none; }
  .hero-rotator { display: none; }
  .dot { animation: none; box-shadow: 0 0 0 3px rgba(52, 211, 153, .3); }
}