/* ==========================================================================
   Jakub Pawlina — portfolio
   Theme: "Solving Problems, Building Ideas — Where Tech Meets Vision"
   ========================================================================== */

/* Design tokens ----------------------------------------------------------- */
:root {
  --neon: #00ffc8;
  --neon2: #6dffe6;
  --neon-dim: rgba(0, 255, 200, 0.12);
  --neon-glow: rgba(0, 255, 200, 0.35);

  --bg: #070b12;
  --surface: rgba(12, 21, 32, 0.88);
  --text: #e5edf7;
  --muted: #9aaac0;
  --faint: #405268;
  --line: rgba(0, 255, 200, 0.14);

  --mono: 'Share Tech Mono', ui-monospace, SFMono-Regular, Consolas, monospace;
  --sans: 'Chakra Petch', system-ui, sans-serif;
  --display: 'Tektur', 'Chakra Petch', system-ui, sans-serif;

  --nav-h: 68px;
  --maxw: 1160px;
  --clip: polygon(0 0, calc(100% - 18px) 0, 100% 18px, 100% 100%, 18px 100%, 0 calc(100% - 18px));
}

/* Reset & base ------------------------------------------------------------ */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { scroll-behavior: smooth; scroll-padding-top: calc(var(--nav-h) + 18px); }

body {
  font-family: var(--sans);
  color: var(--text);
  letter-spacing: 0.01em;
  overflow-x: hidden;
  background:
    radial-gradient(circle at 15% 10%, rgba(0, 255, 200, 0.075), transparent 26%),
    radial-gradient(circle at 82% 88%, rgba(0, 255, 200, 0.045), transparent 30%),
    linear-gradient(180deg, #070b12 0%, #07101b 56%, #05070d 100%);
}
body.modal-open { overflow: hidden; }

a, button { -webkit-tap-highlight-color: rgba(0, 255, 200, 0.14); }
::selection { background: var(--neon-dim); color: var(--text); }
strong { color: var(--text); font-weight: 700; }

/* Custom scrollbar — dark track, neon thumb */
* { scrollbar-width: thin; scrollbar-color: var(--neon) rgba(5, 10, 16, 0.95); }
::-webkit-scrollbar { width: 12px; height: 12px; }
::-webkit-scrollbar-track { background: rgba(5, 10, 16, 0.95); }
::-webkit-scrollbar-thumb { background: rgba(0, 255, 200, 0.6); border: 3px solid rgba(5, 10, 16, 0.95); background-clip: padding-box; }
::-webkit-scrollbar-thumb:hover { background: var(--neon); background-clip: padding-box; }

/* Animated canvas background + grid/scanline overlays */
#bg-canvas { position: fixed; inset: 0; z-index: 0; pointer-events: none; opacity: 1; }
body::before {
  content: ''; position: fixed; inset: 0; z-index: 1; pointer-events: none;
  background:
    linear-gradient(rgba(255, 255, 255, 0.018) 1px, transparent 1px),
    linear-gradient(90deg, rgba(255, 255, 255, 0.014) 1px, transparent 1px);
  background-size: 52px 52px;
  mask-image: radial-gradient(circle at center, black 0%, transparent 76%);
}
body::after {
  content: ''; position: fixed; inset: 0; z-index: 2; pointer-events: none;
  background: repeating-linear-gradient(0deg, rgba(255, 255, 255, 0.025) 0 1px, transparent 1px 7px);
  mix-blend-mode: overlay; opacity: 0.18;
}

/* Accessibility ----------------------------------------------------------- */
.skip-link {
  position: fixed; left: 16px; top: 12px; z-index: 9999;
  transform: translateY(-160%);
  padding: 10px 14px;
  background: var(--bg); color: var(--neon); border: 1px solid var(--neon);
  font-family: var(--mono); font-size: 11px; text-transform: uppercase; letter-spacing: 1.5px;
  text-decoration: none;
}
.skip-link:focus { transform: translateY(0); outline: none; }

/* Layout primitives ------------------------------------------------------- */
.wrap { position: relative; z-index: 10; max-width: var(--maxw); margin: 0 auto; padding: 0 48px; }
section { padding: 92px 0; }
hr.divider { position: relative; z-index: 10; border: none; border-top: 1px solid rgba(0, 255, 200, 0.065); }

.section-eye {
  display: flex; align-items: center; gap: 14px; margin-bottom: 42px;
  font-family: var(--mono); font-size: 10px; color: var(--neon);
  letter-spacing: 4px; text-transform: uppercase;
}
.section-eye::after { content: ''; flex: 1; height: 1px; background: linear-gradient(90deg, var(--neon-dim), transparent); }

/* Navigation -------------------------------------------------------------- */
nav {
  position: fixed; top: 0; left: 0; right: 0; z-index: 100;
  display: flex; align-items: center; justify-content: space-between;
  min-height: var(--nav-h); padding: 16px 48px;
  background: rgba(7, 11, 18, 0.9); backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--neon-dim);
}
.logo {
  font-family: var(--display); font-size: 13px; font-weight: 800; color: var(--neon);
  letter-spacing: 4px; text-transform: uppercase; text-decoration: none;
}
.nav-links { display: flex; gap: 26px; list-style: none; }
.nav-links a {
  font-family: var(--mono); font-size: 11px; color: var(--faint);
  letter-spacing: 2px; text-transform: uppercase; text-decoration: none; transition: color 0.2s;
}
.nav-links a:hover, .nav-links a:focus-visible { color: var(--neon); outline: none; }

.nav-toggle {
  display: none; width: 42px; height: 36px; cursor: pointer;
  align-items: center; justify-content: center;
  background: rgba(0, 255, 200, 0.035); color: var(--neon); border: 1px solid var(--line);
  clip-path: polygon(0 0, calc(100% - 9px) 0, 100% 9px, 100% 100%, 9px 100%, 0 calc(100% - 9px));
}
.nav-toggle-lines, .nav-toggle-lines::before, .nav-toggle-lines::after {
  display: block; width: 18px; height: 1px; background: var(--neon); position: relative;
  transition: transform 0.2s, opacity 0.2s;
}
.nav-toggle-lines::before, .nav-toggle-lines::after { content: ''; position: absolute; left: 0; }
.nav-toggle-lines::before { top: -6px; }
.nav-toggle-lines::after { top: 6px; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines { background: transparent; }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::before { transform: translateY(6px) rotate(45deg); }
.nav-toggle[aria-expanded="true"] .nav-toggle-lines::after { transform: translateY(-6px) rotate(-45deg); }

/* Hero -------------------------------------------------------------------- */
#hero { min-height: 100svh; display: flex; align-items: center; padding-top: var(--nav-h); }
.hero-inner { max-width: 820px; margin: 0 auto; transform: translateX(clamp(-64px, -4vw, -18px)); }
.hero-tag {
  display: flex; align-items: center; gap: 10px; margin-bottom: 30px;
  font-family: var(--mono); font-size: 11px; color: var(--neon); letter-spacing: 3px; text-transform: uppercase;
}
.hero-tag::before { content: ''; display: inline-block; width: 28px; height: 1px; background: var(--neon); }

.dot, .status-dot {
  width: 6px; height: 6px; border-radius: 50%;
  background: var(--neon); box-shadow: 0 0 8px var(--neon); animation: blink 2s infinite;
}
@keyframes blink { 0%, 100% { opacity: 1; } 50% { opacity: 0.28; } }

h1 {
  font-family: var(--display); font-size: clamp(44px, 6.4vw, 82px); font-weight: 800;
  line-height: 0.99; letter-spacing: 0.04em; text-transform: uppercase; color: #f1f5f9; margin-bottom: 16px;
}
h1 em { font-style: normal; font-weight: 500; color: var(--neon); }
.hero-sub { font-family: var(--mono); font-size: 13px; color: var(--faint); letter-spacing: 2px; margin-bottom: 26px; }
.hero-desc { max-width: 670px; margin-bottom: 38px; font-size: 18px; font-weight: 500; line-height: 1.65; color: var(--muted); }
.hero-desc em { font-style: normal; color: var(--neon2); }
.hero-location {
  display: flex; align-items: center; gap: 8px; margin-top: 28px;
  font-family: var(--mono); font-size: 11px; color: var(--faint); letter-spacing: 1.5px;
}
.hero-location::before { content: '▸'; color: var(--neon); }

/* Buttons ----------------------------------------------------------------- */
.cta-row { display: flex; flex-wrap: wrap; gap: 14px; align-items: center; }
.btn {
  display: inline-flex; align-items: center; justify-content: center; min-height: 43px;
  padding: 12px 28px; cursor: pointer; text-decoration: none; transition: all 0.2s;
  font-family: var(--mono); font-size: 11px; letter-spacing: 2px; text-transform: uppercase;
  clip-path: polygon(0 0, calc(100% - 13px) 0, 100% 13px, 100% 100%, 13px 100%, 0 calc(100% - 13px));
}
button.btn { background: transparent; }
.btn-primary { color: var(--neon); border: 1px solid var(--neon); }
.btn-primary:hover, .btn-primary:focus-visible { background: var(--neon-dim); outline: none; }
.btn-ghost { color: var(--muted); border: 1px solid var(--faint); }
.btn-ghost:hover, .btn-ghost:focus-visible { color: var(--text); border-color: var(--muted); outline: none; }

/* About ------------------------------------------------------------------- */
.about-grid { display: grid; grid-template-columns: 1.2fr 0.8fr; gap: 58px; align-items: start; }
.about-text { font-size: 16px; font-weight: 500; line-height: 1.78; color: var(--muted); }
.about-text + .about-text { margin-top: 16px; }

.chips { display: flex; flex-wrap: wrap; gap: 8px; margin-top: 22px; }
.chip {
  padding: 5px 12px; font-family: var(--mono); font-size: 10px; letter-spacing: 0.6px;
  color: var(--neon); background: rgba(0, 255, 200, 0.045); border: 1px solid rgba(0, 255, 200, 0.21);
  clip-path: polygon(0 0, calc(100% - 7px) 0, 100% 7px, 100% 100%, 0 100%);
}

.about-aside { display: flex; flex-direction: column; gap: 26px; }
.stats { display: flex; flex-direction: column; gap: 24px; }
.stat { padding-left: 20px; border-left: 2px solid var(--neon); }
.stat-n { font-family: var(--display); font-size: 35px; font-weight: 800; line-height: 1; letter-spacing: 0.04em; color: #f1f5f9; }
.stat-l { margin-top: 6px; font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.6px; text-transform: uppercase; }

/* Experience timeline ----------------------------------------------------- */
.timeline { display: flex; flex-direction: column; }
.tl-item { position: relative; display: flex; gap: 28px; padding-bottom: 36px; }
.tl-item::before { content: ''; position: absolute; left: 3px; top: 18px; bottom: 0; width: 1px; background: rgba(0, 255, 200, 0.1); }
.tl-item:last-child { padding-bottom: 0; }
.tl-item:last-child::before { display: none; }
.tl-dot { flex-shrink: 0; width: 7px; height: 7px; margin-top: 7px; border-radius: 50%; background: var(--neon); box-shadow: 0 0 10px var(--neon); }
.tl-role { margin-bottom: 4px; font-family: var(--display); font-size: 15px; font-weight: 700; letter-spacing: 0.05em; text-transform: uppercase; color: var(--text); }
.tl-company { margin-bottom: 5px; font-size: 14px; font-weight: 600; color: var(--neon); }
.tl-date { margin-bottom: 8px; font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.6px; text-transform: uppercase; }
.tl-desc { max-width: 680px; font-size: 14px; line-height: 1.65; color: var(--faint); }

/* Projects ---------------------------------------------------------------- */
.projects-head { display: flex; justify-content: space-between; align-items: end; gap: 24px; margin-bottom: 26px; }
.projects-intro { max-width: 720px; font-size: 15px; line-height: 1.7; color: var(--muted); }

.project-toolbar { display: flex; flex-wrap: wrap; align-items: center; gap: 10px; margin-bottom: 18px; }
.count-label { font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.5px; text-transform: uppercase; }

.projects-grid { display: grid; grid-template-columns: repeat(3, minmax(0, 1fr)); gap: 16px; }
.project-card {
  position: relative; display: flex; flex-direction: column; min-height: 250px; padding: 22px; overflow: hidden; cursor: pointer;
  background: var(--surface); border: 1px solid rgba(0, 255, 200, 0.11);
  clip-path: var(--clip); transition: border-color 0.25s, transform 0.25s, background 0.25s;
}
.project-card::before { content: ''; position: absolute; inset: 0; border-top: 1px solid rgba(0, 255, 200, 0.16); opacity: 0.5; pointer-events: none; }
.project-card:hover, .project-card:focus-visible { transform: translateY(-3px); border-color: var(--neon-glow); background: rgba(12, 22, 34, 0.94); outline: none; }
.pcard-top { display: flex; justify-content: space-between; align-items: center; gap: 12px; margin-bottom: 12px; }
.pcard-kicker { font-family: var(--mono); font-size: 10px; color: rgba(0, 255, 200, 0.35); letter-spacing: 2px; text-transform: uppercase; }
.pcard-type { font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.2px; text-transform: uppercase; text-align: right; }
.project-card h3 { margin-bottom: 10px; font-family: var(--display); font-size: 15px; font-weight: 700; letter-spacing: 0.04em; text-transform: uppercase; color: var(--text); }
.project-card p { font-size: 14px; font-weight: 500; line-height: 1.58; color: var(--muted); }
.project-card .chips { margin-top: 16px; }
.project-actions { display: flex; flex-wrap: wrap; gap: 10px; margin-top: auto; padding-top: 18px; }

.plink {
  padding: 7px 0 2px; cursor: pointer; background: none; text-decoration: none;
  font-family: var(--mono); font-size: 10px; letter-spacing: 1.4px; text-transform: uppercase;
  color: var(--neon); border: 0; border-bottom: 1px solid rgba(0, 255, 200, 0.35);
}
.plink:hover, .plink:focus-visible { color: var(--text); border-color: var(--text); outline: none; }

.load-row { display: flex; flex-wrap: wrap; justify-content: center; gap: 12px; margin-top: 28px; }
.empty-state {
  padding: 24px; font-family: var(--mono); font-size: 12px; letter-spacing: 1.2px; text-transform: uppercase;
  color: var(--faint); border: 1px solid rgba(0, 255, 200, 0.1);
}

/* Notes ------------------------------------------------------------------- */
.notes-grid { display: grid; grid-template-columns: 0.9fr 1.1fr; gap: 18px; align-items: stretch; }
.note-panel { padding: 24px; background: var(--surface); border: 1px solid rgba(0, 255, 200, 0.1); clip-path: var(--clip); }
.note-panel h3 { margin-bottom: 10px; font-family: var(--display); font-size: 17px; letter-spacing: 0.04em; text-transform: uppercase; }
.note-panel p { font-size: 15px; line-height: 1.7; color: var(--muted); }

.post-list { display: grid; gap: 10px; }
.post {
  display: grid; grid-template-columns: 1fr auto; gap: 14px; padding: 14px 0;
  text-decoration: none; color: inherit; border-bottom: 1px solid rgba(0, 255, 200, 0.08);
}
.post:last-child { border-bottom: 0; }
.post:hover .post-title, .post:focus-visible .post-title { color: var(--neon); }
.post:focus-visible { outline: 1px solid var(--neon); outline-offset: 4px; }
.post-title { font-size: 14px; color: var(--text); transition: color 0.2s; }
.post-tag { margin-top: 4px; font-family: var(--mono); font-size: 10px; color: var(--neon); opacity: 0.75; letter-spacing: 1.2px; text-transform: uppercase; }
.post-meta { font-family: var(--mono); font-size: 10px; color: var(--faint); white-space: nowrap; }

/* Contact ----------------------------------------------------------------- */
.contact-block + .contact-block { margin-top: 36px; }
.contact-block-label {
  display: flex; align-items: center; gap: 12px; margin-bottom: 16px;
  font-family: var(--mono); font-size: 10px; color: var(--neon); letter-spacing: 3px; text-transform: uppercase;
}
.contact-block-label::after { content: ''; flex: 1; height: 1px; background: linear-gradient(90deg, var(--neon-dim), transparent); }
.contact-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(240px, 1fr)); gap: 14px; }
.ccard {
  display: flex; align-items: center; gap: 14px; min-height: 74px; padding: 18px 20px;
  text-decoration: none; color: inherit;
  background: var(--surface); border: 1px solid rgba(0, 255, 200, 0.1);
  clip-path: polygon(0 0, calc(100% - 14px) 0, 100% 14px, 100% 100%, 14px 100%, 0 calc(100% - 14px));
  transition: border-color 0.2s, transform 0.2s;
}
button.ccard { width: 100%; text-align: left; cursor: pointer; }
.ccard:hover, .ccard:focus-visible { transform: translateY(-2px); border-color: var(--neon-glow); outline: none; }
.ccard-icon { min-width: 24px; text-align: center; font-family: var(--mono); font-size: 18px; font-weight: 500; color: var(--neon); }
.ccard-label { font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.5px; text-transform: uppercase; }
.ccard-val { margin-top: 3px; font-size: 14px; color: var(--text); word-break: break-word; }
.ccard-val a { color: var(--neon); text-decoration: none; }
.ccard-val a:hover, .ccard-val a:focus-visible { text-decoration: underline; outline: none; }

/* Footer ------------------------------------------------------------------ */
footer {
  position: relative; z-index: 10; display: flex; flex-wrap: wrap; justify-content: space-between; align-items: center; gap: 12px;
  padding: 24px 48px; border-top: 1px solid var(--neon-dim);
}
.footer-copy { font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 2px; }
.footer-status { display: flex; align-items: center; gap: 8px; font-family: var(--mono); font-size: 10px; color: var(--neon); letter-spacing: 2px; text-transform: uppercase; }

/* Modals ------------------------------------------------------------------ */
.modal-backdrop {
  position: fixed; inset: 0; z-index: 500; display: none; align-items: center; justify-content: center; padding: 24px;
  background: rgba(7, 11, 18, 0.42); backdrop-filter: blur(20px); -webkit-backdrop-filter: blur(20px);
}
.modal-backdrop.is-open { display: flex; animation: modal-fade 0.18s ease both; }
@keyframes modal-fade { from { opacity: 0; } to { opacity: 1; } }
@keyframes modal-pop { from { opacity: 0; transform: translateY(14px) scale(0.985); } to { opacity: 1; transform: none; } }
.modal {
  display: flex; flex-direction: column; width: min(1060px, 100%); padding: 0; overflow: hidden;
  background: rgba(7, 12, 20, 0.96); border: 1px solid rgba(0, 255, 200, 0.28);
  box-shadow: 0 0 40px rgba(0, 255, 200, 0.08), 0 24px 70px rgba(0, 0, 0, 0.55);
  clip-path: polygon(0 0, calc(100% - 26px) 0, 100% 26px, 100% 100%, 26px 100%, 0 calc(100% - 26px));
}
.modal-backdrop.is-open .modal { animation: modal-pop 0.28s cubic-bezier(0.2, 0.8, 0.2, 1) both; }
.modal-head { flex: 0 0 auto; display: flex; justify-content: space-between; align-items: flex-start; gap: 18px; padding: 16px 26px; border-bottom: 1px solid rgba(0, 255, 200, 0.12); }
.modal-kicker { margin-bottom: 6px; font-family: var(--mono); font-size: 10px; color: var(--neon); letter-spacing: 2px; text-transform: uppercase; }
.modal-title { font-family: var(--display); font-size: clamp(20px, 4vw, 34px); letter-spacing: 0.04em; text-transform: uppercase; }
.modal-close { flex: 0 0 auto; width: 38px; height: 38px; cursor: pointer; font-family: var(--mono); font-size: 18px; color: var(--neon); background: transparent; border: 1px solid rgba(0, 255, 200, 0.25); }
.modal-close:hover, .modal-close:focus-visible { background: var(--neon-dim); outline: none; }

.modal-body { flex: 0 1 auto; min-height: 0; max-height: calc(90svh - 120px); padding: 20px 26px; overflow: auto; }
.modal-body p { font-size: 16px; line-height: 1.7; color: var(--muted); }
.modal-grid { display: grid; grid-template-columns: 1fr 0.62fr; gap: 24px; }
.modal-media { width: 100%; max-height: 300px; object-fit: cover; margin-bottom: 18px; border: 1px solid rgba(0, 255, 200, 0.16); clip-path: var(--clip); }
.modal-side { padding-left: 20px; border-left: 1px solid rgba(0, 255, 200, 0.12); }
.modal-label { margin: 20px 0 8px; font-family: var(--mono); font-size: 10px; color: var(--faint); letter-spacing: 1.8px; text-transform: uppercase; }
.modal-links { display: flex; flex-wrap: wrap; gap: 12px; margin-top: 18px; }
.pdf-frame { width: 100%; height: min(62svh, 620px); background: #101622; border: 1px solid rgba(0, 255, 200, 0.18); }
.pdf-note { margin-top: 14px; font-family: var(--mono); font-size: 11px; line-height: 1.6; color: var(--faint); }

/* Responsive -------------------------------------------------------------- */
@media (max-width: 1040px) {
  .projects-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
  .hero-inner { transform: translateX(clamp(-38px, -3vw, -14px)); }
}
@media (max-width: 860px) {
  .projects-grid, .notes-grid, .contact-grid, .about-grid { grid-template-columns: 1fr; }
  .projects-head { flex-direction: column; align-items: start; }
  .modal-grid { grid-template-columns: 1fr; }
  .modal-side { padding-left: 0; padding-top: 4px; border-left: 0; border-top: 1px solid rgba(0, 255, 200, 0.12); }
}
@media (max-width: 768px) {
  :root { --nav-h: 62px; }
  nav { padding: 12px 18px; }
  .logo { font-size: 12px; letter-spacing: 3px; }
  .nav-toggle { display: inline-flex; }
  .nav-links {
    position: absolute; top: calc(100% + 1px); left: 10px; right: 10px;
    display: grid; grid-template-columns: 1fr 1fr; gap: 0; padding: 8px;
    background: rgba(7, 11, 18, 0.98); border: 1px solid var(--line); clip-path: var(--clip);
    opacity: 0; pointer-events: none; transform: translateY(-8px); transition: opacity 0.18s, transform 0.18s;
  }
  .nav-links.is-open { opacity: 1; pointer-events: auto; transform: translateY(0); }
  .nav-links a { display: block; padding: 14px 12px; color: var(--muted); border: 1px solid rgba(0, 255, 200, 0.06); }
  .wrap { padding: 0 18px; }
  section { padding: 62px 0; }
  .hero-inner { margin: 0; max-width: 100%; transform: none; }
  h1 { font-size: clamp(40px, 13vw, 58px); letter-spacing: 0.025em; }
  .hero-sub { font-size: 11px; line-height: 1.7; }
  .hero-desc { font-size: 16px; }
  .cta-row { display: grid; grid-template-columns: 1fr; }
  .btn { width: 100%; }
  .project-toolbar { align-items: stretch; }
  .count-label { width: 100%; }
  .project-card { min-height: 0; padding: 20px; }
  .post { grid-template-columns: 1fr; }
  .post-meta { white-space: normal; }
  footer { padding: 20px 18px; }
  .modal-backdrop { align-items: stretch; padding: 0; }
  .modal { width: 100%; min-height: 100svh; border-left: 0; border-right: 0; clip-path: none; }
  .modal-head { padding: 18px; }
  .modal-body { flex: 1 1 auto; max-height: none; padding: 18px; }
  .pdf-frame { height: 68svh; }
}
@media (max-width: 420px) {
  .nav-links { grid-template-columns: 1fr; }
  .hero-tag { font-size: 10px; letter-spacing: 2px; }
  .section-eye { letter-spacing: 3px; }
  .project-actions { gap: 8px; }
  .plink { font-size: 9.5px; }
}
@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  *, *::before, *::after { animation: none !important; transition: none !important; }
  #bg-canvas { display: none; }
}