/* ==========================================
   Francesco Vinci — Iconic Academic Portfolio
   DevPunks-inspired, Carmine + Ash + Gray
   ========================================== */

/* --- Design Tokens --- */
:root {
  --carmine: #9B111E;
  --carmine-dark: #7d0e18;
  --carmine-light: rgba(155, 17, 30, 0.08);
  --carmine-mark: rgba(155, 17, 30, 0.13);
  --ash: #2B2B2B;
  --ash-deep: #1A1A1A;
  --gray-50: #FAFAFA;
  --gray-100: #F5F5F5;
  --gray-200: #EEEEEE;
  --gray-300: #E0E0E0;
  --gray-400: #BDBDBD;
  --gray-500: #8A8A8A;
  --gray-600: #6B6B6B;
  --white: #FFFFFF;
  --text: #2B2B2B;
  --text-muted: #6B6B6B;
  --text-light: #9E9E9E;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.05);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.07);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.1);
  --radius: 12px;
  --radius-sm: 8px;
  --radius-lg: 20px;
  --radius-pill: 999px;
  --nav-height: 72px;
  --transition: 0.3s cubic-bezier(0.25, 0.46, 0.45, 0.94);
  --spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
}

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

html {
  scroll-padding-top: var(--nav-height);
}

body {
  font-family: var(--font);
  background: var(--white);
  color: var(--text);
  line-height: 1.65;
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  overflow-x: hidden;
}

img {
  max-width: 100%;
  height: auto;
  display: block;
}

a {
  color: var(--carmine);
  text-decoration: none;
  transition: color var(--transition);
}

ul, ol { list-style: none; }

h1, h2, h3, h4, h5, h6 {
  color: var(--ash);
  line-height: 1.12;
  font-weight: 700;
}

/* --- Noise Overlay (texture su tutto il sito) --- */
body::after {
  content: '';
  position: fixed;
  inset: 0;
  pointer-events: none;
  z-index: 9999;
  opacity: 0.025;
  background-image: url("data:image/svg+xml,%3Csvg viewBox='0 0 256 256' xmlns='http://www.w3.org/2000/svg'%3E%3Cfilter id='n'%3E%3CfeTurbulence type='fractalNoise' baseFrequency='0.9' numOctaves='4' stitchTiles='stitch'/%3E%3C/filter%3E%3Crect width='100%25' height='100%25' filter='url(%23n)'/%3E%3C/svg%3E");
  background-repeat: repeat;
  background-size: 256px 256px;
}

/* --- Custom Cursor --- */
.cursor-dot {
  position: fixed;
  top: 0;
  left: 0;
  width: 10px;
  height: 10px;
  background: var(--carmine);
  border-radius: 50%;
  pointer-events: none;
  z-index: 10000;
  transition: width 0.3s var(--spring), height 0.3s var(--spring), background 0.3s ease, opacity 0.3s ease;
  transform: translate(-50%, -50%);
  opacity: 0;
}

.cursor-dot.visible {
  opacity: 1;
}

.cursor-dot.hovering {
  width: 48px;
  height: 48px;
  background: var(--carmine);
  opacity: 0.18;
}

/* --- Layout --- */
.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 32px;
}

.section {
  padding: 120px 0;
  position: relative;
}

.section-gray {
  background: var(--gray-100);
}

/* Section Header con numero grande */
.section-header {
  margin-bottom: 64px;
  position: relative;
}

.section-icon {
  position: absolute;
  top: -30px;
  left: -10px;
  z-index: 0;
  user-select: none;
  opacity: 0.07;
}

.section-icon svg {
  width: clamp(5rem, 12vw, 9rem);
  height: clamp(5rem, 12vw, 9rem);
}

.section-header h2 {
  font-size: clamp(2rem, 4vw, 2.75rem);
  font-weight: 800;
  letter-spacing: -0.03em;
  position: relative;
  z-index: 1;
  margin-bottom: 12px;
}

.section-header p {
  font-size: 1.05rem;
  color: var(--text-muted);
  max-width: 520px;
  position: relative;
  z-index: 1;
}

/* Text highlight mark — devpunks style */
mark {
  background: var(--carmine-mark);
  color: var(--carmine);
  padding: 2px 10px;
  border-radius: 6px;
  font-style: normal;
}

/* Link hover: underline slide da sinistra */
.link-slide {
  position: relative;
  display: inline;
  text-decoration: none;
  color: var(--text);
}

.link-slide::after {
  content: '';
  position: absolute;
  bottom: -2px;
  left: 0;
  width: 0;
  height: 1.5px;
  background: var(--carmine);
  transition: width var(--transition);
}

.link-slide:hover::after {
  width: 100%;
}

.link-slide:hover {
  color: var(--carmine);
}

/* --- NAVBAR (DevPunks style) --- */
.navbar {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: var(--nav-height);
  z-index: 1000;
  background: rgba(255,255,255,0.92);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border-bottom: 1px solid transparent;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.navbar.scrolled {
  border-bottom-color: var(--gray-300);
  box-shadow: 0 1px 12px rgba(0,0,0,0.04);
}

.navbar .container {
  display: flex;
  align-items: center;
  justify-content: space-between;
  height: 100%;
}

.nav-logo {
  font-size: 1.2rem;
  font-weight: 800;
  color: var(--ash);
  letter-spacing: -0.04em;
}

.nav-logo span { color: var(--carmine); }

/* Toggle Switch (DevPunks signature) */
.nav-toggle {
  display: flex;
  background: var(--gray-100);
  border-radius: var(--radius-pill);
  padding: 4px;
  border: 1px solid var(--gray-300);
  position: relative;
}

.nav-toggle button {
  padding: 8px 20px;
  border: none;
  background: transparent;
  font-size: 0.78rem;
  font-weight: 600;
  font-family: var(--font);
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-pill);
  transition: color var(--transition);
  position: relative;
  z-index: 1;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  white-space: nowrap;
}

.nav-toggle button.active {
  color: var(--white);
}

.nav-toggle-bg {
  position: absolute;
  top: 4px;
  left: 4px;
  height: calc(100% - 8px);
  background: var(--carmine);
  border-radius: var(--radius-pill);
  transition: transform var(--spring), width var(--spring);
  z-index: 0;
}

/* Nav links */
.nav-links {
  display: flex;
  align-items: center;
  gap: 28px;
}

.nav-links a {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--text-muted);
  text-decoration: none;
  transition: color var(--transition);
  text-underline-offset: 6px;
}

.nav-links a:hover,
.nav-links a.active {
  color: var(--ash);
  text-decoration: underline;
  text-decoration-color: var(--carmine);
  text-decoration-thickness: 2px;
}

.nav-cta {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 22px;
  background: var(--ash);
  color: var(--white) !important;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  text-decoration: none !important;
  transition: all var(--transition);
}

.nav-cta:hover {
  background: var(--carmine);
  transform: translateY(-1px);
}

/* Hamburger */
.nav-hamburger {
  display: none;
  background: none;
  border: none;
  cursor: pointer;
  padding: 8px;
  z-index: 1001;
  width: 32px;
  height: 32px;
  position: relative;
}

.nav-hamburger span {
  display: block;
  width: 22px;
  height: 2px;
  background: var(--ash);
  border-radius: 2px;
  position: absolute;
  left: 5px;
  transition: transform var(--transition), opacity var(--transition);
}

.nav-hamburger span:nth-child(1) { top: 8px; }
.nav-hamburger span:nth-child(2) { top: 15px; }
.nav-hamburger span:nth-child(3) { top: 22px; }

.nav-hamburger.open span:nth-child(1) { transform: translateY(7px) rotate(45deg); }
.nav-hamburger.open span:nth-child(2) { opacity: 0; }
.nav-hamburger.open span:nth-child(3) { transform: translateY(-7px) rotate(-45deg); }

/* Mobile full-screen menu */
.mobile-menu {
  position: fixed;
  inset: 0;
  background: var(--white);
  z-index: 998;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 32px;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.4s ease, visibility 0.4s ease;
}

.mobile-menu.open {
  opacity: 1;
  visibility: visible;
}

.mobile-menu a {
  font-size: 1.5rem;
  font-weight: 700;
  color: var(--ash);
  text-decoration: none;
  transition: color var(--transition);
}

.mobile-menu a:hover { color: var(--carmine); }

.mobile-toggle { margin-bottom: 16px; }
.mobile-toggle .nav-toggle { display: flex; }

/* --- HERO --- */
.hero {
  min-height: 100vh;
  display: flex;
  align-items: center;
  padding-top: var(--nav-height);
  position: relative;
  overflow: hidden;
  background: var(--white);
}

/* Grid pattern background */
.hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background-image:
    linear-gradient(var(--gray-200) 1px, transparent 1px),
    linear-gradient(90deg, var(--gray-200) 1px, transparent 1px);
  background-size: 64px 64px;
  opacity: 0.45;
  pointer-events: none;
}

/* Interactive blob */
.hero-blob {
  position: absolute;
  width: 400px;
  height: 400px;
  border-radius: 50%;
  background: radial-gradient(circle, rgba(155,17,30,0.12) 0%, transparent 70%);
  pointer-events: none;
  z-index: 0;
  filter: blur(40px);
  transition: transform 0.08s linear;
  will-change: transform;
}

.hero .container {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 64px;
  align-items: center;
  padding-top: 48px;
  padding-bottom: 48px;
}

.hero-text h1 {
  font-size: clamp(2.5rem, 5vw, 4rem);
  font-weight: 800;
  letter-spacing: -0.04em;
  line-height: 1.08;
  margin-bottom: 16px;
}

.hero-text h1 mark {
  background: var(--carmine-mark);
  color: var(--carmine);
  padding: 0 12px;
  border-radius: 8px;
}

.hero-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 10px;
  min-height: 1.6em;
}

.hero-subtitle .typed-text {
  color: var(--carmine);
  font-weight: 600;
}

.hero-subtitle .cursor {
  display: inline-block;
  width: 2px;
  height: 1.15em;
  background: var(--carmine);
  margin-left: 1px;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink { 50% { opacity: 0; } }

.hero-desc {
  font-size: 1rem;
  color: var(--text-muted);
  line-height: 1.75;
  max-width: 500px;
  margin-bottom: 24px;
}

.hero-desc b { color: var(--text); font-weight: 600; }

.hero-badges {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-bottom: 32px;
}

.badge {
  display: inline-block;
  padding: 6px 16px;
  border-radius: var(--radius-pill);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  background: var(--gray-100);
  color: var(--text-muted);
  border: 1px solid var(--gray-300);
  transition: all var(--transition);
}

.badge-carmine {
  background: var(--carmine-light);
  color: var(--carmine);
  border-color: rgba(155,17,30,0.15);
}

.hero-actions {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

/* Buttons (magnetic via JS) */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 14px 28px;
  border-radius: var(--radius-pill);
  font-size: 0.82rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  text-transform: uppercase;
  transition: all var(--transition);
  cursor: pointer;
  border: none;
  text-decoration: none;
  font-family: var(--font);
  will-change: transform;
}

.btn svg { width: 16px; height: 16px; }

.btn-primary {
  background: var(--carmine);
  color: var(--white);
}

.btn-primary:hover {
  background: var(--carmine-dark);
  color: var(--white);
  box-shadow: var(--shadow-md);
}

.btn-outline {
  background: transparent;
  color: var(--ash);
  border: 1.5px solid var(--gray-300);
}

.btn-outline:hover {
  border-color: var(--ash);
}

/* Hero photo — NO CROP */
.hero-photo {
  display: flex;
  justify-content: center;
}

.hero-photo img {
  width: 100%;
  max-width: 380px;
  aspect-ratio: 3 / 4;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  object-fit: cover;
  object-position: top center;
}

.scroll-hint {
  position: absolute;
  bottom: 32px;
  left: 50%;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  color: var(--text-light);
  font-size: 0.72rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
}

.scroll-hint svg {
  animation: scrollBounce 2s ease-in-out infinite;
}

@keyframes scrollBounce {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(6px); }
}

/* --- MARQUEE TICKER --- */
.marquee {
  background: var(--carmine);
  padding: 14px 0;
  overflow: hidden;
  white-space: nowrap;
}

.marquee-track {
  display: flex;
  animation: marqueeScroll 30s linear infinite;
  width: max-content;
}

.marquee-content {
  display: flex;
  align-items: center;
  gap: 0;
  flex-shrink: 0;
}

.marquee-content span {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0 24px;
}

.marquee-content span::after {
  content: '•';
  margin-left: 24px;
  opacity: 0.4;
}

@keyframes marqueeScroll {
  0% { transform: translateX(0); }
  100% { transform: translateX(-50%); }
}

/* --- ABOUT --- */
.about-grid {
  display: grid;
  grid-template-columns: 1fr 1.5fr;
  gap: 56px;
  align-items: start;
}

.info-card {
  background: var(--gray-100);
  border-radius: var(--radius);
  padding: 32px;
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.info-row {
  display: flex;
  align-items: flex-start;
  gap: 14px;
}

.info-row svg {
  width: 18px;
  height: 18px;
  color: var(--carmine);
  flex-shrink: 0;
  margin-top: 3px;
}

.info-label {
  font-size: 0.7rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--text-light);
  margin-bottom: 2px;
}

.info-value {
  font-size: 0.9rem;
  color: var(--text);
  font-weight: 500;
}

.info-value a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 3px;
  text-decoration-color: var(--gray-400);
}

.info-value a:hover { text-decoration-color: var(--carmine); }

.about-text {
  font-size: 1.1rem;
  line-height: 1.85;
}

.about-text b { font-weight: 600; color: var(--ash); }

/* Research Area Cards — 3D tilt via JS */
.areas-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 20px;
  margin-top: 72px;
}

.area-card {
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 28px 24px;
  transition: border-color var(--transition), box-shadow var(--transition);
  transform-style: preserve-3d;
  will-change: transform;
}

.area-card:hover {
  border-color: var(--carmine);
  box-shadow: var(--shadow-md);
}

.area-icon {
  width: 42px;
  height: 42px;
  border-radius: 10px;
  background: var(--carmine-light);
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: 16px;
}

.area-icon svg {
  width: 20px;
  height: 20px;
  color: var(--carmine);
}

.area-card h4 {
  font-size: 0.95rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.area-card p {
  font-size: 0.82rem;
  color: var(--text-muted);
  line-height: 1.55;
}

/* --- Timeline (pill-marker style) --- */
.timeline-wrap {
  padding: 72px 0;
  background: var(--gray-100);
}

.timeline {
  position: relative;
  padding: 0;
}

/* Horizontal line through pill centers */
.timeline-line {
  position: absolute;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--gray-300);
  top: 13px;
}

.timeline-items {
  display: flex;
  width: 100%;
  justify-content: space-between;
  position: relative;
  z-index: 1;
}

.tl-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 16px;
  flex: 1;
  min-width: 100px;
  cursor: default;
}

/* Year = the pill marker sitting ON the line */
.tl-year {
  background: var(--gray-100);
  color: var(--carmine);
  border: 2px solid var(--carmine);
  padding: 3px 14px;
  border-radius: var(--radius-pill);
  font-size: 0.75rem;
  font-weight: 800;
  letter-spacing: 0.02em;
  line-height: 1.3;
  white-space: nowrap;
  z-index: 2;
  position: relative;
  transition: all var(--transition);
}

.tl-item:hover .tl-year {
  background: var(--carmine);
  color: #FFFFFF;
}

/* Dot hidden — pill replaces it */
.tl-dot { display: none; }

/* "Now" pill filled by default + pulse */
.tl-now .tl-year {
  background: var(--carmine);
  color: #FFFFFF;
  animation: pulseRing 2s ease-in-out infinite;
}

@keyframes pulseRing {
  0%, 100% { box-shadow: 0 0 0 0 rgba(155,17,30,0.3); }
  50% { box-shadow: 0 0 0 6px rgba(155,17,30,0); }
}

/* Card: no box, just text below the pill */
.tl-card {
  text-align: center;
  max-width: 140px;
  padding: 0;
  background: none;
  border: none;
}

.tl-card h4 {
  font-size: 0.82rem;
  font-weight: 700;
  color: var(--text);
  line-height: 1.3;
  margin-bottom: 2px;
}

.tl-card p {
  font-size: 0.72rem;
  color: var(--text-muted);
  line-height: 1.35;
}

/* --- CV / Experience --- */
.cv-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 40px;
  border: 1px solid var(--gray-300);
  border-radius: var(--radius-pill);
  overflow: hidden;
  width: fit-content;
}

.cv-tab {
  padding: 12px 28px;
  border: none;
  background: var(--white);
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--text-muted);
  cursor: pointer;
  transition: all var(--transition);
  font-family: var(--font);
  letter-spacing: 0.02em;
  text-transform: uppercase;
}

.cv-tab:not(:last-child) { border-right: 1px solid var(--gray-300); }
.cv-tab.active { background: var(--carmine); color: var(--white); }
.cv-tab:hover:not(.active) { background: var(--gray-100); color: var(--ash); }

.cv-panel { display: none; }
.cv-panel.active { display: block; }

.cv-entry {
  display: grid;
  grid-template-columns: 150px 1fr;
  gap: 28px;
  padding: 28px 0;
  border-bottom: 1px solid var(--gray-200);
}

.cv-entry:last-child { border-bottom: none; }

.cv-date {
  font-size: 0.82rem;
  font-weight: 600;
  color: var(--carmine);
  padding-top: 3px;
}

.cv-content h4 {
  font-size: 1rem;
  font-weight: 600;
  margin-bottom: 6px;
}

.cv-content p {
  font-size: 0.9rem;
  color: var(--text-muted);
  line-height: 1.6;
}

.cv-content a {
  font-size: 0.85rem;
  text-decoration: underline;
  text-underline-offset: 3px;
}

.cv-download {
  margin-top: 56px;
  text-align: center;
}

.cv-download .btn-outline:hover {
  border-color: var(--carmine);
  color: var(--carmine);
}

.cv-download .btn svg { transition: transform var(--transition); }
.cv-download .btn:hover svg { transform: translateY(2px); }

/* --- WORLD MAP PANEL --- */
.map-panel {
  padding: 0;
  background: var(--gray-100);
  overflow: hidden;
}

.map-wrap {
  position: relative;
  max-width: 100%;
  margin: 0 auto;
}

.world-map {
  width: 100%;
  height: auto;
  display: block;
  vertical-align: bottom;
}

.map-land path,
.map-land ellipse {
  fill: var(--ash);
  opacity: 0.08;
}

.map-land path[fill="none"] {
  fill: none;
  stroke: var(--ash);
  opacity: 0.08;
}

/* Pin markers */
.map-pin {
  position: absolute;
  transform: translate(-50%, -50%);
  z-index: 2;
}

.map-pin-dot {
  display: block;
  width: 8px;
  height: 8px;
  background: var(--carmine);
  border-radius: 50%;
  border: 2px solid #fff;
  box-shadow: 0 0 0 1px var(--carmine);
  cursor: pointer;
  transition: transform 0.2s ease;
}

.map-pin.home .map-pin-dot {
  width: 10px;
  height: 10px;
  box-shadow: 0 0 0 2px var(--carmine), 0 0 0 5px rgba(155,17,30,0.15);
}

.map-pin:hover .map-pin-dot {
  transform: scale(1.4);
}

/* Tooltip card */
.map-pin-card {
  position: absolute;
  bottom: calc(100% + 10px);
  left: 50%;
  transform: translateX(-50%);
  background: #fff;
  border: 1px solid rgba(0,0,0,0.08);
  border-radius: 8px;
  padding: 8px 12px;
  white-space: nowrap;
  box-shadow: 0 4px 16px rgba(0,0,0,0.1);
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.2s ease, transform 0.2s ease;
  transform: translateX(-50%) translateY(4px);
}

.map-pin:hover .map-pin-card {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

.map-pin-card strong {
  display: block;
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--ash);
}

.map-pin-card span {
  display: block;
  font-size: 0.68rem;
  color: var(--text-muted);
  margin-top: 1px;
}

/* Developer mode adjustments */
body[data-mode="developer"] .map-land path,
body[data-mode="developer"] .map-land ellipse {
  fill: #fff;
  opacity: 0.06;
}

body[data-mode="developer"] .map-land path[fill="none"] {
  stroke: #fff;
}

body[data-mode="developer"] .map-pin-dot {
  border-color: var(--bg);
}

body[data-mode="developer"] .map-pin-card {
  background: #1e1e3a;
  border-color: rgba(255,255,255,0.08);
}

body[data-mode="developer"] .map-pin-card strong {
  color: #fff;
}

body[data-mode="developer"] .map-pin-card span {
  color: rgba(255,255,255,0.6);
}

/* Mobile */
@media (max-width: 900px) {
  .map-panel { padding: 0; }
  .map-pin-dot { width: 6px; height: 6px; }
  .map-pin.home .map-pin-dot { width: 8px; height: 8px; }
  .map-pin-card { padding: 6px 10px; }
  .map-pin-card strong { font-size: 0.68rem; }
  .map-pin-card span { font-size: 0.62rem; }
}

/* --- Publications with numbering --- */
.pub-year-group {
  margin-bottom: 48px;
}

.pub-year-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 20px;
  cursor: pointer;
  background: none;
  border: none;
  padding: 0;
  font-family: inherit;
}

.pub-year-label span {
  display: inline-block;
  font-size: 0.72rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--carmine);
  background: var(--carmine-light);
  padding: 6px 16px;
  border-radius: var(--radius-pill);
}

.pub-chevron {
  color: var(--carmine);
  transition: transform 0.3s ease;
}

.pub-year-group.open .pub-chevron {
  transform: rotate(0deg);
}

.pub-year-group:not(.open) .pub-chevron {
  transform: rotate(-90deg);
}

.pub-year-group:not(.open) .pub-year-label {
  margin-bottom: 0;
}

.pub-list {
  display: flex;
  flex-direction: column;
  gap: 14px;
  overflow: visible;
  transition: max-height 0.35s ease, opacity 0.3s ease;
  max-height: 2000px;
  opacity: 1;
}

.pub-year-group:not(.open) .pub-list {
  max-height: 0;
  opacity: 0;
  overflow: hidden;
}

.pub-year-label {
  position: relative;
  z-index: 0;
}

.pub-card {
  position: relative;
  z-index: 1;
  display: grid;
  grid-template-columns: 56px 1fr;
  gap: 20px;
  background: var(--white);
  border: 1px solid var(--gray-300);
  border-radius: var(--radius);
  padding: 24px 28px;
  transition: all var(--transition);
  align-items: start;
}

.section-gray .pub-card { background: var(--white); }

.pub-card:hover {
  border-color: var(--carmine);
  box-shadow: var(--shadow-md);
  transform: translateY(-2px);
}

.pub-number {
  font-size: 0.75rem;
  font-weight: 700;
  color: var(--white);
  background: var(--gray-400);
  line-height: 1;
  letter-spacing: 0.02em;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  align-self: start;
  text-align: center;
  min-width: 32px;
  font-family: var(--font);
}

.pub-card:hover .pub-number {
  background: var(--carmine);
}

.pub-card a {
  text-decoration: none;
  color: inherit;
  display: block;
}

.pub-card a:hover { color: inherit; }

.pub-title {
  font-size: 0.95rem;
  font-weight: 600;
  color: var(--ash);
  margin-bottom: 8px;
  line-height: 1.45;
}

.pub-authors {
  font-size: 0.84rem;
  color: var(--text-muted);
  margin-bottom: 6px;
}

.pub-authors .me {
  color: var(--carmine);
  font-weight: 600;
}

.pub-venue {
  font-size: 0.8rem;
  color: var(--text-light);
  font-style: italic;
}

/* --- Software Tools --- */
.software-card {
  background: var(--white);
  border-radius: var(--radius);
  padding: 44px;
  position: relative;
  overflow: hidden;
}

.software-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 20px;
  margin-top: 24px;
}

.software-grid .software-card {
  padding: 24px;
}

.software-grid .software-card::before {
  display: none;
}

.software-grid .software-card {
  border: 1px solid var(--gray-200);
  transition: border-color var(--transition), box-shadow var(--transition);
}

.software-grid .software-card:hover {
  border-color: var(--carmine);
  box-shadow: var(--shadow-md);
}

.software-grid .software-header {
  margin-bottom: 12px;
  gap: 8px;
}

.software-grid .software-header h3 {
  font-size: 1.05rem;
}

.software-grid .software-desc {
  font-size: 0.85rem;
  line-height: 1.6;
  margin-bottom: 10px;
}

.software-grid .software-badge {
  margin-bottom: 12px;
  padding: 3px 10px;
  font-size: 0.62rem;
}

.software-grid .software-links a {
  padding: 6px 12px;
  font-size: 0.68rem;
}

.software-grid .software-tags {
  margin-top: 14px;
}

.software-featured {
  margin-bottom: 0;
  transition: transform var(--spring), box-shadow var(--transition);
}

.software-featured:hover {
  transform: scale(1.02);
  box-shadow: var(--shadow-lg);
}

/* Animated gradient border */
.software-card::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: var(--radius);
  padding: 2px;
  background: linear-gradient(90deg, #7d0e18, #e05260, #7d0e18);
  background-size: 200% 100%;
  animation: gradientBorder 4s linear infinite;
  -webkit-mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  mask: linear-gradient(#fff 0 0) content-box, linear-gradient(#fff 0 0);
  -webkit-mask-composite: xor;
  mask-composite: exclude;
  pointer-events: none;
}

@keyframes gradientBorder {
  0% { background-position: 0% 50%; }
  100% { background-position: 200% 50%; }
}

.software-badge {
  display: inline-block;
  font-size: 0.68rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: var(--carmine);
  background: var(--carmine-light);
  padding: 5px 14px;
  border-radius: var(--radius-pill);
  margin-bottom: 20px;
}

.software-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: 16px;
  margin-bottom: 20px;
}

.software-header h3 {
  font-size: 1.35rem;
  font-weight: 700;
}

.software-links {
  display: flex;
  gap: 8px;
}

.software-links a {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 10px 18px;
  border-radius: var(--radius-pill);
  font-size: 0.76rem;
  font-weight: 600;
  background: var(--gray-100);
  color: var(--text);
  border: 1px solid var(--gray-300);
  transition: all var(--transition);
  text-decoration: none;
  letter-spacing: 0.03em;
  text-transform: uppercase;
}

.software-links a:hover {
  border-color: var(--carmine);
  color: var(--carmine);
}

.software-links a svg { width: 14px; height: 14px; }

.software-desc {
  font-size: 0.95rem;
  color: var(--text-muted);
  line-height: 1.75;
  margin-bottom: 16px;
}

.software-desc b { color: var(--text); font-weight: 600; }

.software-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
  margin-top: 24px;
}

/* --- Contact --- */
.contact-grid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 56px;
  align-items: start;
}

.contact-item {
  display: flex;
  align-items: flex-start;
  gap: 14px;
  margin-bottom: 20px;
}

.contact-item svg {
  width: 18px;
  height: 18px;
  color: var(--carmine);
  flex-shrink: 0;
  margin-top: 3px;
}

.contact-item a {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 4px;
  text-decoration-color: var(--gray-400);
}

.contact-item a:hover {
  text-decoration-color: var(--carmine);
  color: var(--carmine);
}

.contact-intro {
  font-size: 1rem;
  color: var(--text-muted);
  margin-bottom: 24px;
}

.social-links {
  display: flex;
  gap: 12px;
}

.social-link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 48px;
  height: 48px;
  border-radius: 50%;
  border: 1px solid var(--gray-300);
  color: var(--text-muted);
  transition: all var(--spring);
}

.social-link:hover {
  border-color: var(--carmine);
  color: var(--carmine);
  background: var(--carmine-light);
  transform: scale(1.1) rotate(-5deg);
}

.social-link svg, .social-link img {
  width: 20px;
  height: 20px;
}

/* --- Footer (dark, devpunks style) --- */
.footer {
  background: var(--ash-deep);
  padding: 56px 0 40px;
}

.footer-inner {
  display: grid;
  grid-template-columns: 1fr auto 1fr;
  gap: 32px;
  align-items: start;
}

.footer-brand {
  font-size: 1.15rem;
  font-weight: 800;
  color: var(--white);
  letter-spacing: -0.03em;
}

.footer-brand span { color: var(--carmine); }

.footer-nav {
  display: flex;
  gap: 32px;
}

.footer-nav a {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--gray-500);
  text-decoration: none;
  text-transform: uppercase;
  letter-spacing: 0.06em;
  transition: color var(--transition);
}

.footer-nav a:hover { color: var(--white); }

.footer-social {
  display: flex;
  gap: 16px;
  justify-self: end;
}

.footer-social a {
  color: var(--gray-500);
  transition: color var(--transition);
}

.footer-social a:hover { color: var(--white); }

.footer-social svg { width: 18px; height: 18px; }

.footer-bottom {
  margin-top: 40px;
  padding-top: 24px;
  border-top: 1px solid rgba(255,255,255,0.08);
  text-align: center;
  font-size: 0.75rem;
  color: var(--gray-500);
}

/* --- Back to Top --- */
.back-to-top {
  position: fixed;
  bottom: 28px;
  right: 28px;
  width: 44px;
  height: 44px;
  border-radius: 50%;
  background: var(--white);
  border: 1px solid var(--gray-300);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  opacity: 0;
  visibility: hidden;
  transition: all var(--transition);
  z-index: 100;
  box-shadow: var(--shadow-sm);
  font-family: var(--font);
}

.back-to-top.visible { opacity: 1; visibility: visible; }

.back-to-top:hover {
  border-color: var(--carmine);
  color: var(--carmine);
  box-shadow: var(--shadow-md);
}

.back-to-top svg { width: 18px; height: 18px; }

/* --- Responsive --- */
@media (max-width: 900px) {
  .section { padding: 80px 0; }
  .container { padding: 0 20px; }

  .nav-hamburger { display: block; }
  .nav-links { display: none; }
  .scroll-hint { display: none; }

  .nav-toggle button { padding: 6px 14px; font-size: 0; }
  .nav-toggle button[data-mode="researcher"]::after { content: "Res"; font-size: 0.7rem; }
  .nav-toggle button[data-mode="developer"]::after { content: "Dev"; font-size: 0.7rem; }

  .mobile-toggle { display: none; }

  .hero .container {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 32px;
  }

  .hero-text { order: 2; }
  .hero-photo { order: 1; }
  .hero-photo img { max-width: 260px; margin: 0 auto; }
  .hero-badges { justify-content: center; }
  .hero-actions { justify-content: center; }
  .hero-desc { margin: 0 auto 24px; }

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

  /* Timeline → vertical, year left, text right */
  .timeline-wrap { padding: 40px 0; }

  .timeline-line { display: none; }

  .timeline-items {
    flex-direction: column;
    gap: 16px;
  }

  .tl-item {
    flex-direction: row;
    align-items: flex-start;
    gap: 14px;
    min-width: 0;
  }

  .tl-year {
    font-size: 0.68rem;
    padding: 2px 10px;
    flex-shrink: 0;
  }

  .tl-card {
    text-align: left;
    max-width: none;
  }

  .tl-card h4 { font-size: 0.82rem; }
  .tl-card p { font-size: 0.7rem; }

  .cv-entry { grid-template-columns: 1fr; gap: 6px; }
  .skills-grid { grid-template-columns: 1fr; }
  .pub-card { grid-template-columns: 1fr; }
  .pub-number { display: none; }
  .software-grid { grid-template-columns: 1fr; }
  .software-card { padding: 24px; }
  .software-featured { margin-bottom: 0; }
  .contact-grid { grid-template-columns: 1fr; gap: 32px; }

  .footer-inner {
    grid-template-columns: 1fr;
    text-align: center;
    gap: 24px;
  }

  .footer-nav { justify-content: center; }
  .footer-social { justify-self: center; }

  .cursor-dot { display: none !important; }
}

@media (max-width: 480px) {
  .areas-grid { grid-template-columns: 1fr; }
  .hero-text h1 { font-size: 2.1rem; }
  .cv-tabs { width: 100%; }
  .cv-tab { flex: 1; text-align: center; padding: 12px 14px; font-size: 0.75rem; }
  .section-icon svg { width: 4rem; height: 4rem; }
}

/* ================================================
   DEVELOPER MODE — Inverted theme, purple accent
   White↔Black swap + carmine→purple
   ================================================ */
body[data-mode="developer"] {
  /* Lighter purple accent for readability on dark backgrounds */
  --carmine: #c77dff;
  --carmine-dark: #9b5de5;
  --carmine-light: rgba(199, 125, 255, 0.1);
  --carmine-mark: rgba(199, 125, 255, 0.15);
  /* Inverted grays: light↔dark swap */
  --ash: #F0F0F0;
  --ash-deep: #FAFAFA;
  --gray-50: #262635;
  --gray-100: #2E2E3D;
  --gray-200: #383848;
  --gray-300: #484858;
  --gray-400: #68687A;
  --gray-500: #A8A8B8;
  --gray-600: #D0D0DC;
  --white: #222232;
  --text: #F2F2F8;
  --text-muted: #C8C8D8;
  --text-light: #A8A8B8;
  --shadow-sm: 0 1px 3px rgba(0,0,0,0.25);
  --shadow-md: 0 4px 20px rgba(0,0,0,0.3);
  --shadow-lg: 0 12px 40px rgba(0,0,0,0.35);
  background: #1A1A2E;
  color: var(--text);
}

/* Navbar: dark frosted glass */
body[data-mode="developer"] .navbar {
  background: rgba(26, 26, 46, 0.92);
  border-bottom-color: rgba(255,255,255,0.06);
}
body[data-mode="developer"] .navbar.scrolled {
  background: rgba(26, 26, 46, 0.97);
}
body[data-mode="developer"] .nav-links a { color: var(--text-muted); }
body[data-mode="developer"] .nav-links a:hover { color: var(--text); }
body[data-mode="developer"] .nav-links a.active { color: var(--text); }

/* Hero */
body[data-mode="developer"] .hero {
  background: radial-gradient(ellipse at 30% 60%, rgba(199,125,255,0.06) 0%, transparent 55%), #1A1A2E;
}
body[data-mode="developer"] .hero::before {
  background-image: radial-gradient(rgba(199,125,255,0.07) 1px, transparent 1px);
}

/* Buttons */
body[data-mode="developer"] .btn-primary { color: #1A1A2E; background: var(--carmine); }
body[data-mode="developer"] .btn-primary:hover { background: var(--carmine-dark); color: #FFFFFF; }
body[data-mode="developer"] .btn-outline {
  border-color: var(--gray-400);
  color: var(--text);
}
body[data-mode="developer"] .btn-outline:hover {
  background: var(--carmine);
  border-color: var(--carmine);
  color: #1A1A2E;
}

/* Software link buttons readable on dark cards */
body[data-mode="developer"] .software-links a {
  background: var(--gray-200);
  border-color: var(--gray-400);
  color: var(--text);
}
body[data-mode="developer"] .software-links a:hover {
  border-color: var(--carmine);
  color: var(--carmine);
}

/* Cards & sections: dark backgrounds */
body[data-mode="developer"] .section-gray,
body[data-mode="developer"] .map-panel { background: var(--gray-50); }
body[data-mode="developer"] .section-gray .pub-card { background: var(--gray-200); }

body[data-mode="developer"] .info-card,
body[data-mode="developer"] .area-card,
body[data-mode="developer"] .software-card,
body[data-mode="developer"] .pub-card {
  background: var(--gray-100);
  border-color: var(--gray-300);
}

body[data-mode="developer"] .cv-entry { border-bottom-color: var(--gray-300); }
body[data-mode="developer"] .badge { background: var(--gray-200); color: var(--text-muted); }
body[data-mode="developer"] .badge-carmine { background: var(--carmine-light); color: var(--carmine); }
body[data-mode="developer"] h1, body[data-mode="developer"] h2, body[data-mode="developer"] h3, body[data-mode="developer"] h4, body[data-mode="developer"] h5, body[data-mode="developer"] h6 { color: var(--text); }
body[data-mode="developer"] .about-text b { color: var(--text); }
body[data-mode="developer"] .software-desc b { color: var(--text); }
body[data-mode="developer"] mark { background: var(--carmine-mark); color: var(--carmine); }

/* Timeline */
body[data-mode="developer"] .timeline-wrap { background: var(--gray-100); }
body[data-mode="developer"] .timeline-line { background: var(--gray-400); }
body[data-mode="developer"] .tl-year { background: var(--gray-100); color: var(--carmine); border-color: var(--carmine); }
body[data-mode="developer"] .tl-item:hover .tl-year { background: var(--carmine); color: #1A1A2E; }
body[data-mode="developer"] .tl-now .tl-year { background: var(--carmine); color: #1A1A2E; animation-name: pulseRingDev; }

@keyframes pulseRingDev {
  0%, 100% { box-shadow: 0 0 0 0 rgba(199,125,255,0.3); }
  50% { box-shadow: 0 0 0 6px rgba(199,125,255,0); }
}

/* Marquee */
body[data-mode="developer"] .marquee {
  background: var(--gray-50);
  border-color: var(--gray-300);
}
body[data-mode="developer"] .marquee-content span { color: var(--text-muted); }

/* Footer: was dark→now light */
body[data-mode="developer"] .footer { background: #F5F5F8; }
body[data-mode="developer"] .footer-brand { color: #2B2B2B; }
body[data-mode="developer"] .footer-brand span { color: var(--carmine); }
body[data-mode="developer"] .footer-nav a { color: #6B6B6B; }
body[data-mode="developer"] .footer-nav a:hover { color: #2B2B2B; }
body[data-mode="developer"] .footer-social a { color: #6B6B6B; }
body[data-mode="developer"] .footer-social a:hover { color: #2B2B2B; }
body[data-mode="developer"] .footer-bottom { color: #8A8A8A; border-top-color: rgba(0,0,0,0.08); }

/* Section icon watermark */
body[data-mode="developer"] .section-icon { opacity: 0.04; }
body[data-mode="developer"] .section-icon svg { stroke: #9b5de5; }

/* Software featured gradient border */
body[data-mode="developer"] .software-featured::before {
  background: linear-gradient(90deg, #9b5de5, #e0aaff, #9b5de5);
  background-size: 200% 100%;
}

/* Smooth theme transition */
body,
.navbar,
.hero,
.section,
.section-gray,
.info-card,
.area-card,
.pub-card,
.software-card,
.map-panel,
.footer,
.badge,
mark {
  transition: background 0.4s ease, color 0.4s ease, border-color 0.4s ease;
}

/* --- Mode-specific visibility --- */
.mode-developer { display: none !important; }
body[data-mode="developer"] .mode-researcher { display: none !important; }
body[data-mode="developer"] .mode-developer { display: block !important; }
body[data-mode="developer"] a.mode-developer { display: inline !important; }
body[data-mode="developer"] .mode-developer.cv-tabs { display: flex !important; }
body[data-mode="developer"] .mode-developer.areas-grid { display: grid !important; }
body[data-mode="developer"] .mode-developer.marquee-track { display: flex !important; }
body[data-mode="developer"] .cv-panel.mode-developer { display: none !important; }
body[data-mode="developer"] .cv-panel.mode-developer.active { display: block !important; }

/* --- Utility --- */
.sr-only {
  position: absolute; width: 1px; height: 1px; padding: 0; margin: -1px;
  overflow: hidden; clip: rect(0,0,0,0); white-space: nowrap; border-width: 0;
}