styles.css

/* Self-hosted fonts (latin + latin-ext for Polish glyphs) */
/* latin-ext */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/fonts/IBMPlexMono-400-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;
}
/* latin */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/fonts/IBMPlexMono-400-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;
}
/* latin-ext */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/fonts/IBMPlexMono-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;
}
/* latin */
@font-face {
  font-family: 'IBM Plex Mono';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/fonts/IBMPlexMono-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;
}
/* latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-400-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;
}
/* latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 400;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-400-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;
}
/* latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-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;
}
/* latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 500;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-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;
}
/* latin-ext */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-700-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;
}
/* latin */
@font-face {
  font-family: 'Space Grotesk';
  font-style: normal;
  font-weight: 700;
  font-display: swap;
  src: url(assets/fonts/SpaceGrotesk-700-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;
}

:root {
  --bg: #020408;
  --bg-grid: rgba(255, 255, 255, 0.03);
  --panel: rgba(6, 10, 18, 0.8);
  --panel-border: rgba(255, 255, 255, 0.07);
  --panel-hover: rgba(76, 175, 242, 0.1);
  --ink: #f0f4f8;
  --ink-soft: #94a3b8;
  --ink-muted: #475569;
  --accent: #38bdf8; /* Sophisticated Science Blue */
  --accent-2: #818cf8;
  --accent-dim: rgba(56, 189, 248, 0.15);
  --role-professor: #a78bfa;
  --role-phd: #38bdf8;
  --role-master: #2dd4bf;
  --role-professor-dim: rgba(167, 139, 250, 0.14);
  --role-phd-dim: rgba(56, 189, 248, 0.14);
  --role-master-dim: rgba(45, 212, 191, 0.14);
  --font-sans: "Space Grotesk", sans-serif;
  --font-mono: "IBM Plex Mono", monospace;
  --glass: blur(16px);
}

* {
  box-sizing: border-box;
  -webkit-font-smoothing: antialiased;
}

html {
  scroll-behavior: smooth;
  background: var(--bg);
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  color: var(--ink);
  line-height: 1.6;
  overflow-x: hidden;
}

/* Technical Grid Background */
.bg-overlay {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: -1;
  background-image: 
    linear-gradient(var(--bg-grid) 1px, transparent 1px),
    linear-gradient(90deg, var(--bg-grid) 1px, transparent 1px);
  background-size: 40px 40px;
  mask-image: radial-gradient(circle at 50% 50%, black, transparent 90%);
}

.glow-orb {
  position: absolute;
  width: 800px;
  height: 800px;
  border-radius: 50%;
  filter: blur(140px);
  opacity: 0.08;
  pointer-events: none;
}

.glow-1 { background: var(--accent); top: -300px; left: -200px; }
.glow-2 { background: var(--accent-2); bottom: -300px; right: -200px; }

/* Navigation - Sharper, more technical */
.topbar {
  position: sticky;
  top: 0;
  z-index: 100;
  width: 100%;
  padding: 1rem 2rem;
  background: rgba(2, 4, 8, 0.7);
  backdrop-filter: var(--glass);
  border-bottom: 1px solid var(--panel-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.brand {
  text-decoration: none;
  color: inherit;
  display: flex;
  gap: 1rem;
  align-items: center;
}

.brand img {
  width: 80px;
  height: 80px;
  object-fit: contain;
  transition: transform 0.3s ease;
}

.brand:hover img {
  transform: scale(1.05);
}

.brand-text {
  border-left: 1px solid var(--panel-border);
  padding-left: 1.5rem;
}

.brand-kicker {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
}

.brand-name {
  font-size: 1.2rem;
  font-weight: 700;
  letter-spacing: -0.02em;
}

.nav-links {
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-links a {
  color: var(--ink-soft);
  text-decoration: none;
  font-family: var(--font-mono);
  font-size: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  transition: color 0.2s;
}

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

/* Hero - Data-dense and serious */
.hero {
  width: min(1200px, 94vw);
  margin: 4rem auto 3rem;
}

.hero-metadata {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  display: flex;
  gap: 1.5rem;
  margin-bottom: 2rem;
  opacity: 0.8;
}

.hero-metadata span::before {
  content: "[ ";
  color: var(--ink-muted);
}
.hero-metadata span::after {
  content: " ]";
  color: var(--ink-muted);
}

.hero-title {
  font-size: clamp(2.5rem, 5vw, 3.8rem);
  font-weight: 700;
  line-height: 1.05;
  letter-spacing: -0.04em;
  margin: 0;
  max-width: 22ch;
}

.hero-lead {
  font-size: 1.2rem;
  color: var(--ink-soft);
  max-width: 600px;
  margin-bottom: 3rem;
  border-left: 2px solid var(--accent-dim);
  padding-left: 1.5rem;
}

.btn {
  padding: 0.75rem 1.5rem;
  font-family: var(--font-mono);
  font-size: 0.8rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  text-decoration: none;
  transition: all 0.2s;
  border: 1px solid var(--panel-border);
}

.btn-primary {
  background: var(--ink);
  color: var(--bg);
}

.btn-primary:hover {
  background: var(--accent);
  color: var(--bg);
  border-color: var(--accent);
}

.btn-secondary {
  color: var(--ink);
  background: rgba(255,255,255,0.03);
}

/* Bento Grid - Research Dashboard Style */
.bento-grid {
  display: grid;
  grid-template-columns: repeat(12, 1fr);
  gap: 1px; /* Sharp borders */
  background: var(--panel-border);
  width: min(1200px, 94vw);
  margin: 0 auto;
  border: 1px solid var(--panel-border);
}

.card {
  background: var(--bg);
  padding: 2.5rem;
  position: relative;
  transition: background 0.3s;
}

.card:hover {
  background: rgba(255,255,255,0.01);
}

.card::before {
  content: "";
  position: absolute;
  top: 1rem;
  left: 1rem;
  width: 4px;
  height: 4px;
  background: var(--ink-muted);
}

.card-label {
  font-family: var(--font-mono);
  font-size: 0.65rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.2em;
  margin-bottom: 2rem;
  display: block;
}

.card-title {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
  letter-spacing: -0.02em;
}

/* Specific Card Layouts */
.span-4 { grid-column: span 4; }
.span-6 { grid-column: span 6; }
.span-8 { grid-column: span 8; }
.span-12 { grid-column: span 12; }

/* Research Stats */
.stat-row {
  display: flex;
  justify-content: space-between;
  padding: 0.75rem 0;
  border-bottom: 1px solid var(--panel-border);
}

.stat-value {
  font-family: var(--font-mono);
  color: var(--accent);
  font-weight: 600;
}

/* Area Grid */
.area-grid {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 2rem;
}

.area-item h3 {
  font-size: 0.9rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  color: var(--accent);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.area-item p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.5;
}

/* Project Cards */
.project-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.5rem;
}

.project-card {
  display: flex;
  gap: 1.5rem;
  padding: 1.5rem;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
  text-decoration: none;
  color: inherit;
  transition: background 0.2s, border-color 0.2s;
}

.project-card:hover {
  background: var(--panel-hover);
  border-color: var(--accent);
}

.project-info {
  display: flex;
  flex-direction: column;
  flex: 1;
}

.project-info h3 {
  font-size: 1.1rem;
  font-weight: 700;
  margin-bottom: 0.5rem;
  color: var(--ink);
}

.project-info p {
  font-size: 0.85rem;
  color: var(--ink-soft);
  line-height: 1.5;
  margin-bottom: 0.75rem;
}

.project-link {
  margin-top: auto;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--accent);
  letter-spacing: 0.05em;
}

/* Team */
.team-list {
  display: grid;
  gap: 1rem;
}

.team-member {
  padding: 1rem;
  border-left: 2px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
}

.team-name {
  font-weight: 700;
}

.team-role {
  margin-top: 0.25rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.role-professor {
  border-left-color: var(--role-professor);
  background: linear-gradient(90deg, var(--role-professor-dim), rgba(255, 255, 255, 0.02) 40%);
}

.role-professor .team-role {
  color: var(--role-professor);
}

.role-phd {
  border-left-color: var(--role-phd);
  background: linear-gradient(90deg, var(--role-phd-dim), rgba(255, 255, 255, 0.02) 40%);
}

.role-phd .team-role {
  color: var(--role-phd);
}

.role-master {
  border-left-color: var(--role-master);
  background: linear-gradient(90deg, var(--role-master-dim), rgba(255, 255, 255, 0.02) 40%);
}

.role-master .team-role {
  color: var(--role-master);
}

/* Announcements */
.announcements-list {
  display: grid;
  gap: 1.5rem;
}

.announcement {
  padding: 1.5rem;
  border: 1px solid var(--panel-border);
  background: rgba(255, 255, 255, 0.02);
}

.announcement-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  margin-bottom: 1rem;
  padding-bottom: 0.75rem;
  border-bottom: 1px solid var(--panel-border);
}

.announcement-title {
  font-size: 1.1rem;
  font-weight: 700;
  color: var(--accent);
}

.announcement-date {
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
  letter-spacing: 0.05em;
  flex-shrink: 0;
  margin-left: 1.5rem;
}

.announcement-body {
  font-size: 0.9rem;
  color: var(--ink-soft);
  line-height: 1.7;
}

.announcement-body p {
  margin: 0 0 0.75rem;
}

.announcement-body p:last-child {
  margin-bottom: 0;
}

.announcement-body a {
  color: var(--accent);
  text-decoration: none;
}

.announcement-body a:hover {
  text-decoration: underline;
}

.announcement-body code {
  font-family: var(--font-mono);
  font-size: 0.8rem;
  background: rgba(255, 255, 255, 0.05);
  padding: 0.15em 0.4em;
  border: 1px solid var(--panel-border);
}

.announcement-body pre {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--panel-border);
  padding: 1rem;
  overflow-x: auto;
  margin: 0.75rem 0;
}

.announcement-body pre code {
  background: none;
  border: none;
  padding: 0;
}

.announcement-body strong {
  color: var(--ink);
}

/* Collaboration Layout */
.collab-layout {
  display: flex;
  gap: 4rem;
  align-items: flex-start;
}

.collab-partners {
  width: 300px;
  flex-shrink: 0;
  padding: 1.5rem;
  background: var(--accent-dim);
  border: 1px solid var(--accent);
}

@media (max-width: 768px) {
  .project-grid { grid-template-columns: 1fr; }
  .collab-layout {
    flex-direction: column;
    gap: 2rem;
  }
  .collab-partners {
    width: 100%;
  }
}

/* Footer */
footer {
  width: min(1200px, 94vw);
  margin: 6rem auto 4rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  color: var(--ink-muted);
  text-transform: uppercase;
  letter-spacing: 0.1em;
}

/* Animations */
@keyframes lineGrow {
  from { width: 0; }
  to { width: 100%; }
}

.technical-line {
  height: 1px;
  background: linear-gradient(90deg, var(--accent), transparent);
  margin-bottom: 2rem;
  animation: lineGrow 1.5s ease-out forwards;
}

@media (max-width: 1024px) {
  .span-4, .span-6, .span-8 { grid-column: span 6; }
  .area-grid { grid-template-columns: repeat(2, 1fr); }
}

@media (max-width: 768px) {
  .span-4, .span-6, .span-8, .span-12 { grid-column: span 12; }
  .nav-links a:not(.nav-cta) { display: none; }
  .area-grid { grid-template-columns: 1fr; }
  .hero-title { font-size: 2.5rem; }
  .stats-band { grid-template-columns: repeat(2, 1fr); }
  .topbar { padding: 0.75rem 1.25rem; }
  .brand img { width: 52px; height: 52px; }
  .brand-text { padding-left: 1rem; }
  .nav-cta { padding: 0.4rem 0.75rem; font-size: 0.7rem; }
  .statement-band { padding: 3.5rem 1.5rem; }
}

/* ---------- Spark motif ---------- */
.spark {
  color: var(--accent);
  font-style: normal;
  opacity: 0.85;
}

/* ---------- Preloader ---------- */
.preloader {
  position: fixed;
  inset: 0;
  z-index: 9999;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg);
}

.preloader-mark {
  font-size: clamp(1.6rem, 4vw, 2.4rem);
  font-weight: 700;
  letter-spacing: 0.18em;
  padding-left: 0.18em;
  color: var(--ink);
  opacity: 0;
}

.preloader--active .preloader-mark {
  animation: preMark 1s ease forwards;
}

.preloader--active .preloader-mark .spark {
  display: inline-block;
  animation: preSpin 1.1s ease forwards;
}

.preloader--hide {
  opacity: 0;
  transition: opacity 0.6s ease;
  pointer-events: none;
}

@keyframes preMark {
  from { opacity: 0; letter-spacing: 0.4em; }
  to { opacity: 1; letter-spacing: 0.18em; }
}

@keyframes preSpin {
  from { transform: rotate(-90deg) scale(0.6); opacity: 0; }
  to { transform: rotate(0) scale(1); opacity: 0.85; }
}

/* ---------- Hero ---------- */
.hero {
  position: relative;
}

.hero-inner {
  position: relative;
  z-index: 1;
  width: 100%;
}

/* ---------- Nav CTA ---------- */
.nav-cta {
  border: 1px solid var(--accent);
  color: var(--accent) !important;
  padding: 0.45rem 0.9rem;
  border-radius: 2px;
  transition: background 0.2s, color 0.2s;
}

.nav-cta:hover {
  background: var(--accent);
  color: var(--bg) !important;
}

/* ---------- Stat strip ---------- */
.stats-band {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1px;
  padding: 0;
  background: var(--panel-border);
}

.stats-band::before { display: none; }

.stat-cell {
  background: var(--bg);
  padding: 2.25rem 2.5rem;
}

.stat-num {
  font-family: var(--font-mono);
  font-size: clamp(2rem, 4vw, 2.8rem);
  font-weight: 500;
  letter-spacing: -0.02em;
  color: var(--ink);
}

.stat-label {
  margin-top: 0.5rem;
  font-family: var(--font-mono);
  font-size: 0.7rem;
  text-transform: uppercase;
  letter-spacing: 0.14em;
  color: var(--ink-muted);
}

/* ---------- Statement bands ---------- */
.statement-band {
  background: var(--bg);
  text-align: center;
  padding: 5rem 2.5rem;
}

.statement-band .spark {
  display: block;
  font-size: 1rem;
  margin-bottom: 1.5rem;
  opacity: 0.7;
}

.statement-band p {
  margin: 0 auto;
  max-width: 30ch;
  font-size: clamp(1.4rem, 3vw, 2.1rem);
  font-weight: 500;
  line-height: 1.3;
  letter-spacing: -0.02em;
  color: var(--ink);
}

/* ---------- Scroll reveal ---------- */
[data-reveal] {
  opacity: 0;
  transform: translateY(14px);
  transition: opacity 0.6s ease, transform 0.6s ease;
}

[data-reveal].is-visible {
  opacity: 1;
  transform: none;
}

/* ---------- Hover micro-interactions ---------- */
.project-card,
.team-member {
  transition: background 0.2s, border-color 0.2s, transform 0.2s;
}

.project-card:hover,
.team-member:hover {
  transform: translateY(-2px);
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  .preloader { display: none; }
  .technical-line { animation: none; width: 100%; }
  [data-reveal] { opacity: 1; transform: none; transition: none; }
  .project-card:hover, .team-member:hover { transform: none; }
}