/* ==========================================================
   CV.BLACKARS.COM — FIRST PROTOTYPE
   ----------------------------------------------------------
   Design goals:
   - Cambridge-style CV structure
   - Monochrome techno-minimal visual language
   - Readable by humans, ATS-like parsers and AI models
   - Screen: tabbed sections
   - Print/PDF: continuous document
   ========================================================== */

:root {
  --bg: #f7f7f3;
  --surface: #ffffff;
  --text: #070707;
  --muted: #565656;
  --line: #070707;
  --soft-line: rgba(0, 0, 0, 0.15);
  --accent: #070707;
  --accent-invert: #ffffff;
  --shadow: rgba(0, 0, 0, 0.12);

  --max-width: 1540px;
  --content-width: 1120px;
  --radius: 0px;

  --font-display: Impact, Haettenschweiler, "Arial Black", system-ui, sans-serif;
  --font-mono: "Courier New", Courier, monospace;
  --font-sans: Inter, ui-sans-serif, system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
}

html[data-theme="dark"] {
  --bg: #050505;
  --surface: #0d0d0d;
  --text: #f5f5f0;
  --muted: #a8a8a0;
  --line: #f5f5f0;
  --soft-line: rgba(255, 255, 255, 0.18);
  --accent: #f5f5f0;
  --accent-invert: #050505;
  --shadow: rgba(255, 255, 255, 0.06);
}

* {
  box-sizing: border-box;
}

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  background: var(--bg);
  color: var(--text);
  font-family: var(--font-mono);
  line-height: 1.35;
  transition: background 240ms ease, color 240ms ease;
}

::selection {
  background: var(--accent);
  color: var(--accent-invert);
}

a {
  color: inherit;
  text-decoration: underline;
  text-decoration-thickness: 1.5px;
  text-underline-offset: 4px;
}

a:hover {
  text-decoration-thickness: 3px;
}

button {
  font-family: inherit;
}

img,
video {
  max-width: 100%;
  display: block;
}

.page {
  width: min(var(--max-width), calc(100% - 48px));
  margin: 0 auto;
  padding: 46px 0 80px;
}

/* ----------------------------------------------------------
   Top utility bar
   ---------------------------------------------------------- */

.utility-bar {
  display: flex;
  justify-content: space-between;
  align-items: center;
  gap: 24px;
  margin-bottom: 52px;
  font-size: 0.82rem;
  color: var(--muted);
  letter-spacing: 0.02em;
}

.utility-left,
.utility-right {
  display: flex;
  align-items: center;
  gap: 18px;
  flex-wrap: wrap;
}

.theme-toggle,
.print-button,
.lang-toggle {
  border: 1.5px solid var(--line);
  background: transparent;
  color: var(--text);
  padding: 8px 12px;
  cursor: pointer;
  text-transform: uppercase;
  font-size: 0.78rem;
  transition: background 180ms ease, color 180ms ease;
}

.theme-toggle:hover,
.print-button:hover,
.lang-toggle:hover {
  background: var(--accent);
  color: var(--accent-invert);
}

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

.hero {
  display: grid;
  grid-template-columns: 1fr;
  gap: 72px;
  align-items: start;
  margin-bottom: 72px;
}

.hero-title {
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.07em;
  line-height: 0.9;
  font-size: clamp(3rem, 7vw, 6.4rem);
  margin: 0 0 32px;
  font-weight: 900;
}

.role-line {
  font-family: var(--font-mono);
  font-size: clamp(1rem, 1.6vw, 1.35rem);
  text-transform: uppercase;
  letter-spacing: 0.02em;
  margin: 0 0 18px;
}

.availability-line {
  color: var(--muted);
  font-size: 0.96rem;
  margin-bottom: 30px;
}

.intro {
  max-width: 980px;
  font-size: clamp(1rem, 1.45vw, 1.35rem);
  line-height: 1.26;
  margin: 0 0 42px;
}

.hero-meta {
  display: grid;
  grid-template-columns: minmax(0, 1fr) auto;
  gap: 40px;
  align-items: end;
  max-width: 1160px;
}

.link-stack {
  display: grid;
  gap: 12px;
  font-size: clamp(1rem, 1.55vw, 1.45rem);
}

.download-link {
  font-size: clamp(1rem, 1.55vw, 1.45rem);
  white-space: nowrap;
}

.quick-facts {
  margin-top: 38px;
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  max-width: 980px;
}

.fact {
  border: 1.5px solid var(--line);
  padding: 6px 10px;
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

/* ----------------------------------------------------------
   Navigation line / tabs
   ---------------------------------------------------------- */

.section-tabs {
  position: sticky;
  top: 0;
  z-index: 20;
  background: color-mix(in srgb, var(--bg) 88%, transparent);
  backdrop-filter: blur(10px);
  padding-top: 14px;
  margin-bottom: 72px;
}

.tabs-inner {
  position: relative;
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  align-items: end;
  border-bottom: 4px solid var(--line);
  max-width: 100%;
}

.tab-button {
  appearance: none;
  border: 0;
  background: transparent;
  color: var(--text);
  cursor: pointer;
  font-family: var(--font-display);
  letter-spacing: 0.045em;
  text-transform: uppercase;
  font-size: clamp(1.4rem, 2.2vw, 2.35rem);
  padding: 0 0 20px;
  text-align: center;
  opacity: 0.55;
  position: relative;
  transition: opacity 180ms ease, transform 180ms ease;
}

.tab-button:hover,
.tab-button[aria-selected="true"] {
  opacity: 1;
}

.tab-button[aria-selected="true"]::after {
  content: "";
  position: absolute;
  left: 50%;
  bottom: -28px;
  width: 0;
  height: 0;
  transform: translateX(-50%);
  border-left: 18px solid transparent;
  border-right: 18px solid transparent;
  border-top: 18px solid var(--line);
}

/* ----------------------------------------------------------
   Panels
   ---------------------------------------------------------- */

.panel {
  display: none;
  animation: panelIn 220ms ease;
}

.panel.is-active {
  display: block;
}

@keyframes panelIn {
  from {
    opacity: 0;
    transform: translateY(8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.section-kicker {
  font-size: 0.86rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--muted);
  margin-bottom: 8px;
}

.section-heading {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(2rem, 4vw, 4.2rem);
  letter-spacing: 0.04em;
  line-height: 0.92;
  margin: 0 0 34px;
}

.section-intro {
  max-width: 780px;
  font-size: 1.05rem;
  color: var(--muted);
  margin: -18px 0 52px;
}

.group {
  margin-bottom: 86px;
}

/* ----------------------------------------------------------
   Project cards
   ---------------------------------------------------------- */

.project-list {
  display: grid;
  gap: 72px;
}

.project-card {
  display: grid;
  grid-template-columns: minmax(280px, 0.82fr) minmax(0, 1.18fr);
  gap: 38px;
  align-items: start;
  padding-bottom: 58px;
  border-bottom: 1.5px solid var(--soft-line);
}

.project-card:last-child {
  border-bottom: 0;
}

.media-frame {
  border: 1.5px solid var(--line);
  background: var(--surface);
  aspect-ratio: 16 / 9;
  overflow: hidden;
  position: relative;
  box-shadow: 8px 8px 0 var(--shadow);
}

.media-frame video {
  width: 100%;
  height: 100%;
  object-fit: cover;
  background: #000;
}

.media-placeholder {
  position: absolute;
  inset: 0;
  display: grid;
  place-items: center;
  background:
    linear-gradient(90deg, var(--soft-line) 1px, transparent 1px),
    linear-gradient(var(--soft-line) 1px, transparent 1px);
  background-size: 22px 22px;
  color: var(--text);
  font-size: 0.78rem;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
  padding: 20px;
}

.media-placeholder strong {
  display: block;
  font-family: var(--font-display);
  font-size: 1.2rem;
  margin-bottom: 8px;
  letter-spacing: 0.04em;
}

.project-title {
  font-family: var(--font-display);
  text-transform: uppercase;
  font-size: clamp(1.8rem, 3vw, 3.1rem);
  letter-spacing: 0.04em;
  line-height: 0.96;
  margin: 0 0 16px;
}

.project-title.is-readable {
  text-transform: none;
  font-family: var(--font-sans);
  font-weight: 800;
  letter-spacing: -0.04em;
}

.project-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 22px;
}

.tag {
  border: 1.25px solid var(--line);
  padding: 4px 8px;
  font-size: 0.76rem;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  color: var(--text);
}

.project-description {
  font-size: 1rem;
  max-width: 720px;
  margin: 0 0 22px;
}

.project-bullets {
  margin: 0 0 22px;
  padding-left: 1.2rem;
  max-width: 720px;
  color: var(--muted);
}

.project-bullets li {
  margin-bottom: 6px;
}

.project-links {
  display: flex;
  justify-content: flex-end;
  gap: 20px;
  flex-wrap: wrap;
  font-size: 1.02rem;
  margin-top: 28px;
}

/* ----------------------------------------------------------
   Experience
   ---------------------------------------------------------- */

.timeline {
  display: grid;
  gap: 0;
  border-top: 2px solid var(--line);
}

.experience-item {
  display: grid;
  grid-template-columns: 280px minmax(0, 1fr);
  gap: 44px;
  padding: 34px 0;
  border-bottom: 1.5px solid var(--soft-line);
}

.experience-date {
  color: var(--muted);
  font-size: 0.95rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.experience-title {
  font-family: var(--font-display);
  font-size: clamp(1.45rem, 2.4vw, 2.25rem);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin: 0 0 6px;
}

.experience-org {
  margin: 0 0 18px;
  color: var(--muted);
}

.experience-body {
  max-width: 820px;
  margin: 0 0 18px;
}

/* ----------------------------------------------------------
   Certificates / skills
   ---------------------------------------------------------- */

.skills-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 18px;
  margin-bottom: 66px;
}

.skill-block {
  border: 1.5px solid var(--line);
  padding: 18px;
  min-height: 160px;
  background: var(--surface);
}

.skill-block h3 {
  margin: 0 0 14px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.25rem;
}

.skill-block p {
  margin: 0;
  color: var(--muted);
  font-size: 0.92rem;
}

.cert-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 18px;
}

.certificate-card {
  border: 1.5px solid var(--line);
  padding: 22px;
  background: var(--surface);
}

.certificate-card h3 {
  margin: 0 0 8px;
  font-family: var(--font-display);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: 1.3rem;
}

.certificate-card p {
  margin: 0;
  color: var(--muted);
}

.certificate-meta {
  margin-top: 16px;
  font-size: 0.85rem;
  color: var(--text);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

/* ----------------------------------------------------------
   Diploma grid (icon cards)
   ---------------------------------------------------------- */

.diploma-grid {
  display: grid;
  grid-template-columns: repeat(2, minmax(0, 1fr));
  gap: 28px;
  margin-top: 48px;
}

.diploma-card {
  display: flex;
  flex-direction: column;
  gap: 18px;
  border: 1.5px solid var(--line);
  padding: 22px;
  background: var(--surface);
  box-shadow: 8px 8px 0 var(--shadow);
  transition: border-color 180ms ease, transform 180ms ease, box-shadow 180ms ease;
}

.diploma-card:hover {
  transform: translate(-2px, -2px);
  box-shadow: 10px 10px 0 var(--shadow);
}

.diploma-icon {
  width: 100%;
  aspect-ratio: 4 / 3;
  object-fit: cover;
  object-position: center top;
  border: 1.5px solid var(--soft-line);
  background: var(--bg);
}

.diploma-info {
  min-width: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.diploma-title {
  margin: 0;
  font-family: var(--font-sans);
  font-weight: 800;
  font-size: clamp(1rem, 1.4vw, 1.2rem);
  line-height: 1.25;
  letter-spacing: -0.02em;
  text-transform: none;
}

.diploma-org {
  margin: 0;
  font-size: 0.82rem;
  color: var(--muted);
  text-transform: uppercase;
  letter-spacing: 0.06em;
  font-weight: 600;
}

.diploma-card.coming-soon {
  border-style: dashed;
  opacity: 0.7;
}

.diploma-icon-placeholder {
  width: 100%;
  aspect-ratio: 4 / 3;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 2.5rem;
  border: 1.5px dashed var(--soft-line);
  background: var(--bg);
}

.coming-soon-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--accent);
  border: 1px solid var(--accent);
  border-radius: 3px;
  padding: 2px 8px;
  width: fit-content;
}

/* ----------------------------------------------------------
   Footer
   ---------------------------------------------------------- */

.footer {
  margin-top: 110px;
  padding-top: 30px;
  border-top: 4px solid var(--line);
  display: flex;
  justify-content: center;
  gap: 24px;
  flex-wrap: wrap;
  color: var(--muted);
  font-size: 0.9rem;
}

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

@media (max-width: 1100px) {
  .hero {
    grid-template-columns: 1fr;
    gap: 40px;
  }

  .hero-meta {
    grid-template-columns: 1fr;
    gap: 28px;
  }

  .download-link {
    justify-self: start;
  }

  .project-card {
    grid-template-columns: 1fr;
  }

  .project-links {
    justify-content: flex-start;
  }

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

  .diploma-grid {
    gap: 22px;
  }
}

@media (max-width: 760px) {
  .page {
    width: min(100% - 28px, var(--max-width));
    padding-top: 28px;
  }

  .utility-bar {
    align-items: flex-start;
    flex-direction: column;
    margin-bottom: 40px;
  }

  .hero-title {
    font-size: clamp(2.6rem, 15vw, 4.4rem);
  }

  .intro {
    font-size: 1rem;
  }

  .tabs-inner {
    grid-template-columns: 1fr;
    border-bottom-width: 2px;
  }

  .tab-button {
    text-align: left;
    padding: 14px 0;
  }

  .tab-button[aria-selected="true"]::after {
    display: none;
  }

  .section-tabs {
    position: static;
    margin-bottom: 46px;
  }

  .experience-item {
    grid-template-columns: 1fr;
    gap: 12px;
  }

  .skills-grid,
  .cert-grid,
  .diploma-grid {
    grid-template-columns: 1fr;
  }
}

/* ----------------------------------------------------------
   Print / PDF mode
   ---------------------------------------------------------- */

@media print {
  html,
  body {
    background: #ffffff !important;
    color: #000000 !important;
  }

  :root {
    --bg: #ffffff !important;
    --surface: #ffffff !important;
    --text: #000000 !important;
    --muted: #333333 !important;
    --line: #000000 !important;
    --soft-line: rgba(0, 0, 0, 0.22) !important;
    --accent: #000000 !important;
    --accent-invert: #ffffff !important;
  }

  .page {
    width: 100%;
    padding: 0;
  }

  .utility-bar,
  .theme-toggle,
  .print-button,
  .lang-toggle,
  .section-tabs,
  .project-links a[href="#"],
  .media-placeholder::after {
    display: none !important;
  }

  .hero {
    display: block;
    margin-bottom: 32px;
  }

  .hero-title {
    font-size: 42pt;
    line-height: 0.95;
    margin-bottom: 18pt;
  }

  .intro {
    max-width: 100%;
    font-size: 11pt;
  }

  .hero-meta {
    display: block;
  }

  .link-stack,
  .download-link {
    font-size: 10pt;
  }

  .quick-facts {
    gap: 5pt;
  }

  .fact,
  .tag {
    border: 1pt solid #000;
    font-size: 7.5pt;
  }

  .panel,
  .panel.is-active {
    display: block !important;
    animation: none !important;
    page-break-inside: auto;
  }

  .panel::before {
    content: "";
    display: block;
    border-top: 2pt solid #000;
    margin: 24pt 0 18pt;
  }

  .section-heading {
    font-size: 24pt;
    margin-bottom: 16pt;
  }

  .group {
    margin-bottom: 30pt;
  }

  .project-list {
    gap: 26pt;
  }

  .project-card {
    grid-template-columns: 34% 1fr;
    gap: 18pt;
    padding-bottom: 20pt;
    break-inside: avoid;
  }

  .media-frame {
    box-shadow: none;
    border: 1pt solid #000;
  }

  video {
    display: none !important;
  }

  .media-placeholder {
    position: absolute;
    background: #eeeeee !important;
    color: #000000 !important;
  }

  .project-title {
    font-size: 18pt;
  }

  .project-description,
  .project-bullets,
  .experience-body,
  .section-intro {
    font-size: 9.5pt;
  }

  .experience-item {
    grid-template-columns: 24% 1fr;
    gap: 14pt;
    padding: 16pt 0;
    break-inside: avoid;
  }

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

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

  .diploma-card {
    box-shadow: none;
    break-inside: avoid;
  }

  .footer {
    margin-top: 30pt;
    font-size: 8pt;
  }
}