:root {
  /* ===== COLORS - DARK PROFESSIONAL ===== */
  --bg: #0a0a0a;
  --bg-soft: #151515;
  --surface: #1a1a1a;
  --surface-hover: #202020;
  --text: #ffffff;
  --text-soft: #a0a0a0;
  --text-muted: #707070;
  --text-inverse: #0a0a0a;
  --primary: #2563eb;
  --primary-hover: #1d4ed8;
  --primary-soft: rgba(37, 99, 235, 0.1);
  --secondary: #0ea5e9;
  --accent: #10b981;
  --border: #2a2a2a;
  --border-strong: #3a3a3a;
  --divider: rgba(255, 255, 255, 0.08);
  
  /* ===== TYPOGRAPHY ===== */
  --font-sans: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --font-display: -apple-system, BlinkMacSystemFont, "Segoe UI", system-ui, sans-serif;
  --fs-xs: 0.75rem;
  --fs-sm: 0.875rem;
  --fs-base: 1rem;
  --fs-md: 1.125rem;
  --fs-lg: 1.25rem;
  --fs-xl: 1.5rem;
  --fs-2xl: 2rem;
  --fs-3xl: clamp(2.2rem, 4vw, 3.5rem);
  --lh-tight: 1.2;
  --lh-base: 1.6;
  --lh-loose: 1.75;
  --fw-regular: 400;
  --fw-medium: 500;
  --fw-semibold: 600;
  --fw-bold: 700;
  --fw-extrabold: 800;
  
  /* ===== SPACING ===== */
  --space-4: 1rem;
  --space-8: 2rem;
  --space-12: 3rem;
  
  /* ===== RADIUS - MINIMAL ===== */
  --radius-sm: 4px;
  --radius-md: 6px;
  --radius-lg: 8px;
  --radius-xl: 12px;
  
  /* ===== SHADOWS - DARK ===== */
  --shadow-sm: 0 2px 8px rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 16px rgba(0, 0, 0, 0.4);
  
  /* ===== LAYOUT ===== */
  --container: 1200px;
  --header-height: 70px;
  --section-padding: clamp(4rem, 8vw, 7rem);
  
  /* ===== MOTION ===== */
  --transition-fast: 150ms cubic-bezier(0.4, 0, 0.2, 1);
  --transition-base: 250ms cubic-bezier(0.4, 0, 0.2, 1);
}

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

html {
  scroll-behavior: smooth;
}

body {
  margin: 0;
  font-family: var(--font-sans);
  font-size: var(--fs-base);
  line-height: var(--lh-base);
  background: var(--bg);
  color: var(--text);
  -webkit-font-smoothing: antialiased;
  text-rendering: optimizeLegibility;
}

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

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

/* ===== TYPOGRAPHY ===== */
h1, h2, h3, h4 {
  margin: 0 0 0.75em;
  font-family: var(--font-display);
  line-height: var(--lh-tight);
  letter-spacing: -0.02em;
  color: var(--text);
  font-weight: var(--fw-bold);
}

h1 {
  font-size: var(--fs-3xl);
  font-weight: var(--fw-extrabold);
  letter-spacing: -0.03em;
}

h2 {
  font-size: clamp(1.8rem, 3vw, 2.6rem);
}

h3 {
  font-size: clamp(1.2rem, 2vw, 1.5rem);
  font-weight: var(--fw-semibold);
}

p {
  margin: 0 0 1rem;
  color: var(--text-soft);
}

/* ===== LAYOUT ===== */
.container {
  width: min(100% - 2rem, var(--container));
  margin-inline: auto;
}

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

.grid-3 {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.5rem;
}

.grid-4 {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: 1.5rem;
}

/* ===== HEADER ===== */
.site-header {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(10, 10, 10, 0.9);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  transition: var(--transition-base);
}

.site-header.scrolled {
  background: rgba(10, 10, 0a, 0.95);
  box-shadow: 0 2px 16px rgba(0, 0, 0, 0.4);
}

.site-header .inner {
  min-height: var(--header-height);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
}

.logo {
  font-size: 1.25rem;
  font-weight: var(--fw-bold);
  letter-spacing: -0.01em;
}

.logo:hover {
  color: var(--primary);
}

.main-nav {
  display: flex;
  align-items: center;
  gap: 2rem;
  list-style: none;
  margin: 0;
  padding: 0;
}

.main-nav a {
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  color: var(--text-soft);
  padding: 0.5rem 0;
  position: relative;
}

.main-nav a::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: 0;
  height: 2px;
  background: var(--primary);
  transition: var(--transition-fast);
}

.main-nav a:hover,
.main-nav a.active {
  color: var(--text);
}

.main-nav a:hover::after,
.main-nav a.active::after {
  width: 100%;
}

.lang-switcher {
  display: flex;
  gap: 0.5rem;
  margin-left: 1rem;
}

.lang-btn {
  padding: 0.4rem 0.75rem;
  border: 1px solid var(--border);
  background: var(--surface);
  color: var(--text-soft);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  cursor: pointer;
  transition: var(--transition-fast);
}

.lang-btn:hover,
.lang-btn.active {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

/* ===== BUTTONS ===== */
.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1.5rem;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
  cursor: pointer;
  transition: var(--transition-fast);
}

.btn:hover {
  transform: translateY(-1px);
}

.btn-primary {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
}

.btn-primary:hover {
  background: var(--primary-hover);
  box-shadow: 0 4px 12px rgba(37, 99, 235, 0.3);
}

.btn-secondary {
  background: var(--surface);
  color: var(--text);
  border-color: var(--border);
}

.btn-secondary:hover {
  background: var(--surface-hover);
  border-color: var(--border-strong);
}

/* ===== CARDS ===== */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: var(--transition-base);
}

.card:hover {
  transform: translateY(-2px);
  border-color: var(--border-strong);
  box-shadow: var(--shadow-sm);
}

.card-tag {
  display: inline-flex;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.75rem;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.card h3 {
  margin-bottom: 0.75rem;
  color: var(--text);
}

.card p {
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
  color: var(--text-soft);
}

.card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  margin-top: 1rem;
  color: var(--primary);
  font-weight: var(--fw-medium);
  font-size: var(--fs-sm);
}

.card-link:hover {
  color: var(--primary-hover);
}

.card-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.card-link:hover::after {
  transform: translateX(2px);
}

/* ===== HERO ===== */
.hero {
  padding-block: clamp(5rem, 9vw, 8rem);
}

.hero-grid {
  display: grid;
  grid-template-columns: 1.2fr 0.8fr;
  gap: 4rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  padding: 0.5rem 1rem;
  border-radius: var(--radius-sm);
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  margin-bottom: 1.5rem;
}

.hero h1 {
  margin-bottom: 1rem;
}

.hero p {
  max-width: 65ch;
  font-size: var(--fs-md);
  line-height: var(--lh-loose);
}

.hero-actions {
  display: flex;
  gap: 1rem;
  margin-top: 2rem;
}

.hero-image {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
}

.hero-image img {
  width: 100%;
  height: auto;
  display: block;
}

.hero-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1rem;
  margin-top: 1.5rem;
}

.stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.25rem 1rem;
  text-align: center;
  transition: var(--transition-base);
}

.stat:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
}

.stat-number {
  display: block;
  font-size: var(--fs-2xl);
  font-weight: var(--fw-extrabold);
  color: var(--primary);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.stat-label {
  display: block;
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-weight: var(--fw-medium);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== SECTIONS ===== */
.section {
  padding-block: var(--section-padding);
}

.section-title {
  max-width: 760px;
  margin-bottom: 3rem;
}

.section-title h2 {
  margin-bottom: 0.5rem;
}

.section-title p {
  font-size: var(--fs-md);
  color: var(--text-soft);
}

/* ===== PAGE HERO ===== */
.page-hero {
  padding: clamp(4rem, 8vw, 6rem) 0 clamp(3rem, 6vw, 4rem);
  background: var(--surface);
  border-bottom: 1px solid var(--border);
}

.page-hero h1 {
  margin-bottom: 1rem;
}

.page-hero p {
  font-size: var(--fs-md);
  color: var(--text-soft);
  max-width: 700px;
  line-height: var(--lh-loose);
}

/* ===== TIMELINE ===== */
.timeline {
  position: relative;
  padding-left: 2.5rem;
  margin-top: 2rem;
}

.timeline::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  bottom: 0;
  width: 1px;
  background: var(--border);
}

.timeline-item {
  position: relative;
  margin-bottom: 2.5rem;
  padding-left: 2rem;
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -3.25rem;
  top: 0.25rem;
  width: 10px;
  height: 10px;
  background: var(--primary);
  border-radius: 50%;
  border: 2px solid var(--bg);
  transition: var(--transition-base);
}

.timeline-item:hover::before {
  transform: scale(1.2);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.timeline-featured {
  background: var(--surface);
  border: 2px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 2rem;
  margin-left: -2rem;
  margin-bottom: 3rem !important;
}

.timeline-featured::before {
  left: -1.25rem !important;
  width: 14px !important;
  height: 14px !important;
  background: var(--primary);
  box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--primary);
  animation: pulse 2s ease-in-out infinite;
}

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--bg), 0 0 0 5px var(--primary); }
  50% { box-shadow: 0 0 0 3px var(--bg), 0 0 0 8px rgba(37, 99, 235, 0.4); }
}

.timeline-year {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
}

.timeline-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.5rem;
}

.timeline-subtitle {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.75rem;
}

.timeline-description {
  font-size: var(--fs-sm);
  color: var(--text-soft);
  line-height: var(--lh-loose);
}

/* ===== TOOLS GRID ===== */
.tools-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.tool-card {
  background: var(--surface);
  border: 1px solid var(--border);
  padding: 2rem;
  border-radius: var(--radius-md);
  transition: var(--transition-base);
}

.tool-card:hover {
  border-color: var(--primary);
  transform: translateY(-2px);
  box-shadow: var(--shadow-sm);
}

.tool-card h4 {
  color: var(--text);
  margin-bottom: 0.75rem;
  font-size: var(--fs-lg);
}

.tool-card p {
  color: var(--text-soft);
  font-size: var(--fs-sm);
  line-height: var(--lh-loose);
}

.tool-card-link {
  display: inline-block;
  margin-top: 1rem;
  color: var(--primary);
  font-weight: 500;
  font-size: var(--fs-sm);
  transition: var(--transition-base);
}

a.tool-card:hover .tool-card-link {
  transform: translateX(4px);
}

/* Tool info page specific styles */
.tool-badge {
  display: inline-block;
  padding: 0.5rem 1rem;
  background: rgba(37, 99, 235, 0.1);
  border: 1px solid var(--primary);
  border-radius: var(--radius-sm);
  font-size: var(--fs-sm);
  font-weight: 500;
  color: var(--primary);
  margin-bottom: 1rem;
}

.tool-subtitle {
  font-size: var(--fs-lg);
  color: var(--text-soft);
  margin-top: 0.5rem;
}

.tool-meta {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 1.5rem;
}

.tool-tag {
  padding: 0.25rem 0.75rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-xs);
  color: var(--text-soft);
  font-weight: 500;
}

/* ===== PUBLICATIONS ===== */
.publication-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}

/* Publications as cards grid */
.publications-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(350px, 1fr));
  gap: 2rem;
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}

.publication-card {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 2rem;
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
  overflow: hidden;
}

.publication-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: linear-gradient(90deg, var(--primary), var(--secondary));
  transform: scaleX(0);
  transform-origin: left;
  transition: transform 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}

.publication-card:hover {
  transform: translateY(-8px) scale(1.02);
  border-color: var(--primary);
  box-shadow: 0 20px 40px rgba(37, 99, 235, 0.25), 0 0 0 1px var(--primary);
}

.publication-card:hover::before {
  transform: scaleX(1);
}

.publication-card-type {
  display: inline-flex;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  background: var(--primary-soft);
  color: var(--primary);
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  text-transform: uppercase;
  letter-spacing: 0.05em;
  margin-bottom: 1rem;
}

.publication-card-title {
  font-size: var(--fs-lg);
  font-weight: var(--fw-bold);
  color: var(--text);
  margin-bottom: 0.75rem;
  line-height: var(--lh-tight);
}

.publication-card-meta {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 1rem;
}

.publication-card-description {
  font-size: var(--fs-sm);
  color: var(--text-soft);
  line-height: var(--lh-loose);
  margin-bottom: 1.25rem;
}

.publication-card-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  transition: var(--transition-fast);
}

.publication-card-link:hover {
  color: var(--primary-hover);
  transform: translateX(2px);
}

.publication-card-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.publication-card-link:hover::after {
  transform: translateX(3px);
}

/* Legacy publication items */
.publication-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-left: 3px solid var(--primary);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: var(--transition-base);
}

.publication-item:hover {
  transform: translateX(4px);
  border-left-width: 6px;
}

.publication-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.5rem;
}

.publication-meta {
  font-size: var(--fs-sm);
  color: var(--text-muted);
  font-style: italic;
  margin-bottom: 0.75rem;
}

.publication-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  color: var(--primary);
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
}

.publication-link:hover {
  color: var(--primary-hover);
}

.publication-link::after {
  content: '→';
  transition: transform var(--transition-fast);
}

.publication-link:hover::after {
  transform: translateX(2px);
}

/* ===== PRESS MENTIONS ===== */
.press-list {
  list-style: none;
  padding: 0;
  margin: 2rem 0;
}

.press-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 1.5rem;
  transition: var(--transition-base);
}

.press-item:hover {
  border-color: var(--border-strong);
}

.press-source {
  font-size: var(--fs-xs);
  font-weight: var(--fw-semibold);
  color: var(--primary);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  margin-bottom: 0.5rem;
  display: inline-block;
}

.press-title {
  font-size: var(--fs-md);
  font-weight: var(--fw-semibold);
  margin-bottom: 0.5rem;
}

.press-title a {
  transition: var(--transition-fast);
}

.press-title a:hover {
  color: var(--primary);
}

.press-date {
  font-size: var(--fs-sm);
  color: var(--text-muted);
}

/* ===== FOOTER ===== */
.site-footer {
  padding: var(--space-12) 0 var(--space-8);
  border-top: 1px solid var(--divider);
  background: var(--bg);
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.5fr 1fr 1fr;
  gap: 3rem;
  margin-bottom: 2rem;
}

.footer-section h3 {
  font-size: var(--fs-md);
  margin-bottom: 1rem;
}

.footer-section p,
.footer-section a {
  font-size: var(--fs-sm);
  color: var(--text-soft);
  line-height: var(--lh-loose);
}

.footer-links {
  list-style: none;
  padding: 0;
  margin: 0;
}

.footer-links li {
  margin-bottom: 0.75rem;
}

.footer-links a:hover {
  color: var(--primary);
}

.footer-bottom {
  padding-top: var(--space-8);
  border-top: 1px solid var(--divider);
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

.social-links {
  display: flex;
  gap: 0.75rem;
  margin-top: 1rem;
}

.social-link {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: var(--surface);
  border: 1px solid var(--border);
  color: var(--text-soft);
  font-size: var(--fs-sm);
  transition: var(--transition-fast);
}

.social-link:hover {
  background: var(--primary);
  color: var(--text-inverse);
  border-color: var(--primary);
  transform: translateY(-2px);
}

/* ===== RESPONSIVE ===== */
@media (max-width: 900px) {
  .hero-grid,
  .grid-2,
  .grid-3,
  .grid-4,
  .footer-grid,
  .publications-grid {
    grid-template-columns: 1fr;
  }

  .hero {
    padding-block: 4rem;
  }

  .main-nav {
    flex-wrap: wrap;
    gap: 1rem;
  }

  .site-header .inner {
    flex-direction: column;
    padding: 1rem 0;
  }
  
  .timeline-featured {
    margin-left: 0;
    padding: 1.5rem;
  }
}

/* ===== BADGE SYSTEM ===== */
.badges-section {
  margin: 3rem 0;
}

.badges-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1.5rem;
  margin-top: 2rem;
}

.badge {
  background: var(--surface);
  border: 2px solid var(--border);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  text-align: center;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.75rem;
}

.badge:hover {
  border-color: var(--primary);
  transform: translateY(-4px);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.15);
}

.badge-icon {
  font-size: 2.5rem;
  line-height: 1;
}

.badge-title {
  font-size: var(--fs-sm);
  font-weight: var(--fw-semibold);
  color: var(--text);
}

.badge-date {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

/* ===== TECH STACK VISUAL ===== */
.tech-stack {
  margin: 3rem 0;
}

.tech-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(150px, 1fr));
  gap: 1rem;
  margin-top: 2rem;
}

.tech-item {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 1rem;
  text-align: center;
  transition: var(--transition-base);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
}

.tech-item:hover {
  border-color: var(--primary);
  background: var(--surface-hover);
  transform: scale(1.05);
}

.tech-icon {
  font-size: 1.75rem;
  line-height: 1;
}

.tech-name {
  font-size: var(--fs-xs);
  font-weight: var(--fw-medium);
  color: var(--text-soft);
}

/* ===== UTILITIES ===== */
.mt-2 { margin-top: var(--space-8); }
.mb-2 { margin-bottom: var(--space-8); }
.text-center { text-align: center; }

/* ===== FOCUS STATES ===== */
a:focus-visible,
button:focus-visible {
  outline: 2px solid var(--primary);
  outline-offset: 2px;
}

/* ===== SELECTION ===== */
::selection {
  background: var(--primary);
  color: var(--text-inverse);
}

/* ===== LANGUAGE SYSTEM ===== */
/* Default: hide Spanish and English, show Catalan */
body:not(.lang-loaded) [data-es],
body:not(.lang-loaded) [data-en] {
  display: none;
}

/* ===== SEARCH SYSTEM ===== */
.search-trigger {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: var(--fs-base);
  cursor: pointer;
  transition: var(--transition-fast);
}

.search-trigger:hover {
  border-color: var(--primary);
  background: var(--surface-hover);
}

.search-modal {
  position: fixed;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  z-index: 9999;
  display: flex;
  align-items: flex-start;
  justify-content: center;
  padding-top: 10vh;
}

.search-modal-backdrop {
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  background: rgba(0, 0, 0, 0.7);
  backdrop-filter: blur(4px);
}

.search-modal-content {
  position: relative;
  width: 90%;
  max-width: 600px;
  background: var(--bg);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.5);
  max-height: 70vh;
  display: flex;
  flex-direction: column;
}

.search-modal-header {
  display: flex;
  align-items: center;
  gap: 1rem;
  padding: 1.5rem;
  border-bottom: 1px solid var(--border);
}

#search-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  font-size: var(--fs-lg);
  color: var(--text);
}

.search-close {
  background: transparent;
  border: none;
  font-size: 1.5rem;
  color: var(--text-muted);
  cursor: pointer;
  padding: 0.25rem 0.5rem;
  transition: var(--transition-fast);
}

.search-close:hover {
  color: var(--text);
}

.search-results {
  overflow-y: auto;
  max-height: calc(70vh - 80px);
  padding: 0.5rem;
}

.search-result-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  padding: 1rem;
  border-radius: var(--radius-sm);
  transition: var(--transition-fast);
  text-decoration: none;
  color: var(--text);
}

.search-result-item:hover {
  background: var(--surface-hover);
}

.search-result-type {
  font-size: 1.25rem;
  min-width: 24px;
}

.search-result-title {
  flex: 1;
  font-weight: var(--fw-semibold);
}

.search-result-title mark {
  background: var(--primary-soft);
  color: var(--primary);
  padding: 0 0.2em;
  border-radius: 2px;
}

.search-result-page {
  font-size: var(--fs-xs);
  color: var(--text-muted);
  text-transform: capitalize;
}

.search-hint,
.search-no-results {
  padding: 2rem;
  text-align: center;
  color: var(--text-muted);
}

/* ===== FILTERS SYSTEM ===== */
.filters-bar {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--border);
}

.filter-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.5rem 1rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-soft);
  cursor: pointer;
  transition: var(--transition-fast);
}

.filter-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
}

.filter-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.filter-btn-count {
  display: inline-block;
  margin-left: 0.4rem;
  font-size: var(--fs-xs);
  opacity: 0.7;
}

.publication-card[data-hidden="true"],
.publication-item[data-hidden="true"] {
  display: none;
}

.filter-no-results {
  padding: 3rem 2rem;
  text-align: center;
  color: var(--text-muted);
  font-size: var(--fs-lg);
}

/* ===== SECTION NAVIGATION BAR ===== */
.section-nav-bar {
  position: sticky;
  top: var(--header-height);
  z-index: 40;
  background: rgba(10, 10, 10, 0.95);
  backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  margin-bottom: 2rem;
  padding: 1rem 0;
}

.section-nav-buttons {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  justify-content: center;
}

.section-nav-btn {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.625rem 1.25rem;
  font-size: var(--fs-sm);
  font-weight: var(--fw-medium);
  color: var(--text-soft);
  cursor: pointer;
  transition: var(--transition-fast);
  white-space: nowrap;
}

.section-nav-btn:hover {
  border-color: var(--primary);
  color: var(--primary);
  transform: translateY(-1px);
}

.section-nav-btn.active {
  background: var(--primary);
  border-color: var(--primary);
  color: #fff;
}

.section-nav-count {
  display: inline-block;
  margin-left: 0.4rem;
  font-size: var(--fs-xs);
  opacity: 0.8;
}

@media (max-width: 768px) {
  .section-nav-bar {
    padding: 0.75rem 0;
  }
  
  .section-nav-buttons {
    gap: 0.5rem;
  }
  
  .section-nav-btn {
    padding: 0.5rem 0.875rem;
    font-size: var(--fs-xs);
  }
}

/* ===== CONTACT FORM ===== */
.contact-form {
  max-width: 600px;
  margin: 0 auto;
}

.form-group {
  margin-bottom: 1.5rem;
}

.form-label {
  display: block;
  font-weight: var(--fw-semibold);
  margin-bottom: 0.5rem;
  color: var(--text);
}

.form-input,
.form-textarea {
  width: 100%;
  padding: 0.75rem 1rem;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  font-size: var(--fs-base);
  color: var(--text);
  transition: var(--transition-fast);
}

.form-input:focus,
.form-textarea:focus {
  outline: none;
  border-color: var(--primary);
  box-shadow: 0 0 0 3px var(--primary-soft);
}

.form-textarea {
  min-height: 150px;
  resize: vertical;
}

.form-submit {
  background: var(--primary);
  color: #fff;
  border: none;
  border-radius: var(--radius-sm);
  padding: 0.75rem 2rem;
  font-size: var(--fs-base);
  font-weight: var(--fw-semibold);
  cursor: pointer;
  transition: var(--transition-fast);
}

.form-submit:hover {
  background: var(--primary-hover);
  transform: translateY(-2px);
}

.form-submit:active {
  transform: translateY(0);
}

.form-success,
.form-error {
  padding: 1rem;
  border-radius: var(--radius-sm);
  margin-top: 1rem;
  text-align: center;
}

.form-success {
  background: rgba(16, 185, 129, 0.1);
  border: 1px solid #10b981;
  color: #10b981;
}

.form-error {
  background: rgba(239, 68, 68, 0.1);
  border: 1px solid #ef4444;
  color: #ef4444;
}

/* ===== TOOL SCREENSHOTS ===== */
.tool-screenshot {
  width: 100%;
  aspect-ratio: 16/9;
  margin-bottom: 1.5rem;
  border-radius: var(--radius-sm);
  overflow: hidden;
  background: var(--surface);
  border: 1px solid var(--border);
}

.screenshot-placeholder {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
  background: linear-gradient(135deg, var(--surface) 0%, var(--bg) 100%);
  color: var(--text-muted);
  font-size: var(--fs-sm);
}

.screenshot-icon {
  font-size: 3rem;
  opacity: 0.5;
}

.tool-card img.tool-screenshot-img {
  width: 100%;
  height: 100%;
  object-fit: cover;
  transition: var(--transition-base);
}

.tool-card:hover img.tool-screenshot-img {
  transform: scale(1.05);
}

/* ===== DARK/LIGHT MODE TOGGLE ===== */
.theme-toggle {
  position: fixed;
  bottom: 2rem;
  right: 2rem;
  width: 60px;
  height: 60px;
  border-radius: 50%;
  background: var(--surface);
  border: 2px solid var(--border);
  font-size: 1.75rem;
  cursor: pointer;
  transition: all var(--transition-base);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
}

.theme-toggle:hover {
  transform: scale(1.1) rotate(15deg);
  border-color: var(--primary);
  box-shadow: 0 8px 20px rgba(37, 99, 235, 0.3);
}

.theme-toggle:active {
  transform: scale(0.95);
}

/* Icon visibility based on theme */
.theme-toggle[data-theme="light"] .theme-icon-dark {
  display: none;
}

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

.theme-icon-light,
.theme-icon-dark {
  line-height: 1;
}

/* Smooth theme transitions - ONLY for theme-sensitive properties */
body,
.card,
.tool-card,
.publication-card,
.badge,
.tech-item,
.site-header,
.site-footer,
.hero,
.section,
.form-input,
.form-textarea,
.btn,
.filter-btn {
  transition: background-color 0.3s ease, 
              color 0.3s ease, 
              border-color 0.3s ease;
}

/* Preserve existing transitions for interactive elements */
.publication-card,
.tool-card,
.card,
.badge,
.tech-item {
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1),
              background-color 0.3s ease,
              color 0.3s ease,
              border-color 0.3s ease;
}