/* ==========================================================================
   Asier Urueña — Web personal de investigación
   Modern Academic Theme inspired by al-folio & Minimal Mistakes
   ========================================================================== */

:root {
  /* Color Palette — Light Mode */
  --bg-primary: #ffffff;
  --bg-secondary: #f8fafc;
  --bg-card: #ffffff;
  --bg-hover: #f1f5f9;
  --border-color: #e2e8f0;
  --border-subtle: #edf2f7;
  --border-hover: #cbd5e1;
  
  --text-primary: #0f172a;
  --text-secondary: #334155;
  --text-muted: #64748b;
  --text-link: #2563eb;
  --text-link-hover: #1d4ed8;

  --accent-primary: #2563eb;
  --accent-hover: #1d4ed8;
  --accent-subtle: #eff6ff;
  --accent-border: #bfdbfe;
  
  --badge-journal: #eff6ff;
  --badge-journal-border: #bfdbfe;
  --badge-journal-text: #1d4ed8;

  --badge-conf: #fefce8;
  --badge-conf-border: #fef08a;
  --badge-conf-text: #854d0e;

  --badge-book: #faf5ff;
  --badge-book-border: #e9d5ff;
  --badge-book-text: #6b21a8;

  --rss-color: #f97316;
  --rss-bg: #fff7ed;

  /* Typography */
  --font-sans: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, Helvetica, Arial, sans-serif;
  --font-serif: 'Merriweather', Georgia, Cambria, 'Times New Roman', serif;
  --font-mono: 'JetBrains Mono', SFMono-Regular, Menlo, Monaco, Consolas, monospace;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.05);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.07), 0 2px 4px -2px rgba(0, 0, 0, 0.05);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.08), 0 4px 6px -4px rgba(0, 0, 0, 0.04);
  
  --radius-sm: 6px;
  --radius-md: 10px;
  --radius-lg: 16px;
  --radius-full: 9999px;

  --header-height: 72px;
}

/* Dark Mode Theme */
[data-theme="dark"] {
  --bg-primary: #090d16;
  --bg-secondary: #0f172a;
  --bg-card: #131d31;
  --bg-hover: #1e293b;
  --border-color: #243247;
  --border-subtle: #1a2538;
  --border-hover: #3b82f6;

  --text-primary: #f8fafc;
  --text-secondary: #cbd5e1;
  --text-muted: #94a3b8;
  --text-link: #60a5fa;
  --text-link-hover: #93c5fd;

  --accent-primary: #38bdf8;
  --accent-hover: #60a5fa;
  --accent-subtle: rgba(56, 189, 248, 0.12);
  --accent-border: rgba(56, 189, 248, 0.3);

  --badge-journal: rgba(37, 99, 235, 0.2);
  --badge-journal-border: rgba(37, 99, 235, 0.4);
  --badge-journal-text: #93c5fd;

  --badge-conf: rgba(202, 138, 4, 0.2);
  --badge-conf-border: rgba(202, 138, 4, 0.4);
  --badge-conf-text: #fde047;

  --badge-book: rgba(147, 51, 234, 0.2);
  --badge-book-border: rgba(147, 51, 234, 0.4);
  --badge-book-text: #d8b4fe;

  --rss-color: #fb923c;
  --rss-bg: rgba(249, 115, 22, 0.15);

  --shadow-sm: 0 1px 2px 0 rgba(0, 0, 0, 0.3);
  --shadow-md: 0 4px 6px -1px rgba(0, 0, 0, 0.4);
  --shadow-lg: 0 10px 15px -3px rgba(0, 0, 0, 0.5);
}

/* ==========================================================================
   Base Styles
   ========================================================================== */

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

html {
  font-size: 16px;
  scroll-behavior: smooth;
  scroll-padding-top: calc(var(--header-height) + 20px);
}

body {
  margin: 0;
  padding: 0;
  font-family: var(--font-sans);
  background-color: var(--bg-primary);
  color: var(--text-primary);
  line-height: 1.65;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  transition: background-color 0.25s ease, color 0.25s ease;
}

a {
  color: var(--text-link);
  text-decoration: none;
  transition: color 0.2s ease, text-decoration-color 0.2s ease;
}

a:hover {
  color: var(--text-link-hover);
  text-decoration: underline;
}

h1, h2, h3, h4, h5, h6 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  line-height: 1.25;
  margin-top: 0;
  font-weight: 700;
  letter-spacing: -0.02em;
}

p {
  margin-top: 0;
  margin-bottom: 1.25rem;
  color: var(--text-secondary);
}

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

.container {
  width: 100%;
  max-width: 1120px;
  margin-left: auto;
  margin-right: auto;
  padding-left: 1.5rem;
  padding-right: 1.5rem;
}

/* ==========================================================================
   Header & Navigation
   ========================================================================== */

.site-header {
  position: sticky;
  top: 0;
  z-index: 1000;
  height: var(--header-height);
  background-color: rgba(255, 255, 255, 0.88);
  backdrop-filter: blur(14px);
  -webkit-backdrop-filter: blur(14px);
  border-bottom: 1px solid var(--border-color);
  transition: background-color 0.25s ease, border-color 0.25s ease;
}

[data-theme="dark"] .site-header {
  background-color: rgba(9, 13, 22, 0.88);
}

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

.site-brand {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  color: var(--text-primary);
  text-decoration: none;
}

.site-brand:hover {
  text-decoration: none;
}

.brand-monogram {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 40px;
  height: 40px;
  border-radius: var(--radius-md);
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-weight: 800;
  font-size: 1rem;
  letter-spacing: -0.03em;
  box-shadow: 0 2px 8px rgba(37, 99, 235, 0.3);
}

[data-theme="dark"] .brand-monogram {
  background: linear-gradient(135deg, #38bdf8, #2563eb);
}

.brand-text {
  display: flex;
  flex-direction: column;
}

.brand-name {
  font-weight: 700;
  font-size: 1.05rem;
  line-height: 1.2;
  color: var(--text-primary);
}

.brand-sub {
  font-size: 0.75rem;
  color: var(--text-muted);
  font-weight: 500;
}

.site-nav {
  display: flex;
  align-items: center;
  gap: 1.5rem;
}

.nav-list {
  display: flex;
  align-items: center;
  list-style: none;
  margin: 0;
  padding: 0;
  gap: 0.35rem;
}

.nav-link {
  display: inline-block;
  padding: 0.5rem 0.85rem;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-weight: 500;
  color: var(--text-secondary);
  transition: all 0.15s ease;
}

.nav-link:hover {
  color: var(--accent-primary);
  background-color: var(--bg-hover);
  text-decoration: none;
}

.nav-link.active {
  color: var(--accent-primary);
  font-weight: 600;
  background-color: var(--accent-subtle);
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-left: 1px solid var(--border-color);
  padding-left: 1rem;
}

.icon-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: transparent;
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.2s ease;
}

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

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

/* Sun/Moon Icons */
.theme-toggle .moon-icon {
  display: none;
}

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

[data-theme="dark"] .theme-toggle .moon-icon {
  display: block;
}

/* Mobile Toggle */
.nav-toggle {
  display: none;
  flex-direction: column;
  justify-content: space-between;
  width: 32px;
  height: 24px;
  background: transparent;
  border: none;
  cursor: pointer;
  padding: 0;
}

.hamburger-line {
  display: block;
  width: 100%;
  height: 2.5px;
  background-color: var(--text-primary);
  border-radius: 2px;
  transition: all 0.25s ease;
}

/* ==========================================================================
   Hero Section
   ========================================================================== */

.hero-section {
  padding: 4rem 0 3.5rem;
  background: linear-gradient(180deg, var(--bg-secondary) 0%, var(--bg-primary) 100%);
  border-bottom: 1px solid var(--border-color);
}

.hero-container {
  display: grid;
  grid-template-columns: 1.4fr 1fr;
  gap: 3.5rem;
  align-items: center;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.35rem 0.85rem;
  background-color: var(--accent-subtle);
  border: 1px solid var(--accent-border);
  color: var(--accent-primary);
  font-size: 0.825rem;
  font-weight: 600;
  border-radius: var(--radius-full);
  margin-bottom: 1.25rem;
}

.pulse-indicator {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background-color: #10b981;
  box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  animation: pulse 2s infinite;
}

@keyframes pulse {
  0% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0.7);
  }
  70% {
    box-shadow: 0 0 0 7px rgba(16, 185, 129, 0);
  }
  100% {
    box-shadow: 0 0 0 0 rgba(16, 185, 129, 0);
  }
}

.hero-title {
  font-size: 2.85rem;
  font-weight: 800;
  line-height: 1.15;
  margin-bottom: 1.25rem;
}

.text-gradient {
  background: linear-gradient(135deg, #2563eb, #3b82f6);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

[data-theme="dark"] .text-gradient {
  background: linear-gradient(135deg, #38bdf8, #60a5fa);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
}

.hero-lead {
  font-size: 1.15rem;
  line-height: 1.6;
  color: var(--text-primary);
  margin-bottom: 1rem;
}

.hero-subtext {
  font-size: 1rem;
  color: var(--text-secondary);
  margin-bottom: 2rem;
}

.hero-actions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
}

/* Profile Card in Hero */
.profile-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-md);
  text-align: center;
  transition: transform 0.2s ease, box-shadow 0.2s ease;
}

.profile-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-lg);
}

.profile-avatar-wrapper {
  margin: 0 auto 1.25rem;
  width: 120px;
  height: 120px;
  border-radius: 50%;
  overflow: hidden;
  border: 3px solid var(--accent-primary);
  padding: 3px;
  background-color: var(--bg-primary);
}

.profile-avatar {
  width: 100%;
  height: 100%;
  border-radius: 50%;
  object-fit: cover;
}

.profile-name {
  font-size: 1.35rem;
  margin-bottom: 0.25rem;
}

.profile-role {
  font-size: 0.9rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.25rem;
}

.profile-affiliation {
  font-size: 0.9rem;
  font-weight: 600;
  margin-bottom: 1.5rem;
}

.profile-meta-list {
  border-top: 1px solid var(--border-color);
  padding-top: 1.25rem;
  text-align: left;
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
  font-size: 0.875rem;
}

.profile-meta-item {
  display: flex;
  justify-content: space-between;
  gap: 0.5rem;
}

.meta-label {
  color: var(--text-muted);
  font-weight: 500;
}

.meta-value {
  color: var(--text-primary);
  font-weight: 500;
  text-align: right;
  word-break: break-all;
}

/* ==========================================================================
   Metrics Strip
   ========================================================================== */

.metrics-strip {
  padding: 2.25rem 0;
  background-color: var(--bg-secondary);
  border-bottom: 1px solid var(--border-color);
}

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

.metric-card {
  text-align: center;
  padding: 1rem;
}

.metric-num {
  display: block;
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent-primary);
  line-height: 1.1;
  margin-bottom: 0.35rem;
}

.metric-label {
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

/* ==========================================================================
   Sections & Common Layouts
   ========================================================================== */

.section {
  padding: 4.5rem 0;
}

.section-alt {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  border-bottom: 1px solid var(--border-color);
}

.section-header {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  margin-bottom: 2.5rem;
  gap: 1.5rem;
}

.section-title {
  font-size: 2rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.section-subtitle {
  font-size: 1.05rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

.section-link {
  font-weight: 600;
  font-size: 0.95rem;
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  white-space: nowrap;
}

.header-side-links {
  display: flex;
  align-items: center;
  gap: 1rem;
}

/* Grids */
.grid {
  display: grid;
  gap: 1.75rem;
}

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

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

/* Feature Cards (Research Lines on Home) */
.feature-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.feature-card:hover {
  transform: translateY(-3px);
  box-shadow: var(--shadow-md);
  border-color: var(--border-hover);
}

.feature-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 1rem;
}

.feature-title {
  font-size: 1.25rem;
  font-weight: 700;
  margin-bottom: 0.75rem;
  line-height: 1.3;
}

.feature-desc {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.feature-cta {
  font-weight: 600;
  font-size: 0.9rem;
  color: var(--accent-primary);
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
}

/* ==========================================================================
   Buttons & Tags
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.65rem 1.25rem;
  border-radius: var(--radius-sm);
  font-size: 0.925rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
  text-decoration: none;
  line-height: 1.3;
  border: 1px solid transparent;
}

.btn:hover {
  text-decoration: none;
}

.btn-primary {
  background-color: var(--accent-primary);
  color: #ffffff;
  box-shadow: 0 2px 4px rgba(37, 99, 235, 0.25);
}

.btn-primary:hover {
  background-color: var(--accent-hover);
  color: #ffffff;
}

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

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

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

.btn-subtle:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.btn-sm {
  padding: 0.35rem 0.75rem;
  font-size: 0.825rem;
  border-radius: var(--radius-sm);
}

.tag-chip {
  display: inline-block;
  padding: 0.2rem 0.55rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  color: var(--text-secondary);
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 500;
}

/* ==========================================================================
   Publications List & Cards
   ========================================================================== */

.publications-list {
  display: flex;
  flex-direction: column;
  gap: 1.25rem;
}

.pub-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.pub-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.65rem;
}

.pub-badge {
  display: inline-block;
  padding: 0.15rem 0.55rem;
  border-radius: var(--radius-sm);
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

.badge-journal {
  background-color: var(--badge-journal);
  border: 1px solid var(--badge-journal-border);
  color: var(--badge-journal-text);
}

.badge-conference {
  background-color: var(--badge-conf);
  border: 1px solid var(--badge-conf-border);
  color: var(--badge-conf-text);
}

.badge-book {
  background-color: var(--badge-book);
  border: 1px solid var(--badge-book-border);
  color: var(--badge-book-text);
}

.pub-year {
  font-size: 0.85rem;
  font-weight: 600;
  color: var(--text-muted);
}

.pub-featured-tag {
  font-size: 0.75rem;
  font-weight: 600;
  color: #eab308;
  background: rgba(234, 179, 8, 0.1);
  padding: 0.15rem 0.45rem;
  border-radius: var(--radius-sm);
}

.pub-title {
  font-size: 1.15rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.pub-title a {
  color: var(--text-primary);
}

.pub-title a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.pub-authors {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 0.35rem;
}

.highlight-author {
  color: var(--text-primary);
  font-weight: 700;
}

.pub-venue {
  font-size: 0.9rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.pub-actions {
  display: flex;
  gap: 0.5rem;
  align-items: center;
}

/* BibTeX block */
.pub-bibtex-block {
  margin-top: 1rem;
  padding: 1rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
}

.bibtex-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--text-muted);
  margin-bottom: 0.5rem;
}

.copy-bibtex-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.2rem 0.5rem;
  font-size: 0.75rem;
  cursor: pointer;
  color: var(--text-primary);
}

.copy-bibtex-btn:hover {
  background-color: var(--bg-hover);
}

.pub-bibtex-block pre {
  margin: 0;
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: 0.825rem;
  color: var(--text-secondary);
  line-height: 1.5;
}

/* Publications Page Filter Bar */
.pub-intro-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
  margin-bottom: 2rem;
  box-shadow: var(--shadow-sm);
}

.pub-external-links {
  display: flex;
  flex-wrap: wrap;
  gap: 0.85rem;
  margin-top: 1rem;
}

.badge-link {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.35rem 0.75rem;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 500;
  color: var(--text-secondary);
}

.badge-link:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  text-decoration: none;
}

.pub-filter-bar {
  margin-bottom: 1.75rem;
}

.filter-buttons {
  display: flex;
  gap: 0.5rem;
  flex-wrap: wrap;
}

.filter-btn {
  background: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-sm);
  padding: 0.45rem 1rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-secondary);
  cursor: pointer;
  transition: all 0.15s ease;
}

.filter-btn:hover {
  background-color: var(--bg-hover);
  color: var(--text-primary);
}

.filter-btn.active {
  background-color: var(--accent-primary);
  border-color: var(--accent-primary);
  color: #ffffff;
  font-weight: 600;
}

/* ==========================================================================
   Blog & Post Preview Cards
   ========================================================================== */

.posts-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 1.75rem;
  margin-bottom: 3rem;
}

.post-preview-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 1.75rem;
  box-shadow: var(--shadow-sm);
  display: flex;
  flex-direction: column;
  transition: all 0.2s ease;
}

.post-preview-card:hover {
  transform: translateY(-3px);
  border-color: var(--border-hover);
  box-shadow: var(--shadow-md);
}

.post-preview-meta {
  font-size: 0.825rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.75rem;
}

.post-preview-title {
  font-size: 1.25rem;
  font-weight: 700;
  line-height: 1.35;
  margin-bottom: 0.75rem;
}

.post-preview-title a {
  color: var(--text-primary);
}

.post-preview-title a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.post-preview-excerpt {
  font-size: 0.925rem;
  color: var(--text-secondary);
  margin-bottom: 1.25rem;
  flex-grow: 1;
}

.post-preview-link {
  font-weight: 600;
  font-size: 0.875rem;
  color: var(--accent-primary);
}

/* RSS Callout Banner */
.rss-banner {
  background: linear-gradient(135deg, var(--bg-card) 0%, var(--bg-secondary) 100%);
  border: 1px solid var(--border-color);
  border-left: 4px solid var(--rss-color);
  border-radius: var(--radius-md);
  padding: 1.75rem 2rem;
  display: flex;
  align-items: center;
  gap: 1.75rem;
  box-shadow: var(--shadow-sm);
}

.rss-banner-icon {
  flex-shrink: 0;
  color: var(--rss-color);
}

.rss-banner-content {
  flex-grow: 1;
}

.rss-banner-title {
  font-size: 1.25rem;
  margin-bottom: 0.35rem;
}

.rss-banner-desc {
  margin-bottom: 0;
  font-size: 0.925rem;
}

.rss-chip {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.3rem 0.65rem;
  background-color: var(--rss-bg);
  color: var(--rss-color);
  border: 1px solid rgba(249, 115, 22, 0.3);
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 600;
}

.rss-chip:hover {
  background-color: var(--rss-color);
  color: #ffffff;
  text-decoration: none;
}

/* ==========================================================================
   Page & Prose Layouts
   ========================================================================== */

.page-container {
  padding: 3rem 1.5rem 5rem;
}

.page-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.5rem;
}

.page-title {
  font-size: 2.5rem;
  font-weight: 800;
  margin-bottom: 0.5rem;
}

.page-subtitle {
  font-size: 1.15rem;
  color: var(--text-muted);
  margin-bottom: 0;
}

/* Prose Typography */
.prose {
  font-family: var(--font-serif);
  font-size: 1.05rem;
  line-height: 1.8;
  color: var(--text-secondary);
}

.prose h1, .prose h2, .prose h3, .prose h4 {
  font-family: var(--font-sans);
  color: var(--text-primary);
  margin-top: 2rem;
  margin-bottom: 0.85rem;
}

.prose h2 {
  font-size: 1.65rem;
}

.prose h3 {
  font-size: 1.35rem;
}

.prose p {
  font-family: var(--font-serif);
  margin-bottom: 1.5rem;
}

.prose strong {
  color: var(--text-primary);
}

.prose ul, .prose ol {
  margin-bottom: 1.5rem;
  padding-left: 1.5rem;
}

.prose li {
  margin-bottom: 0.5rem;
}

.prose code {
  font-family: var(--font-mono);
  font-size: 0.875em;
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.2em 0.4em;
  border-radius: 4px;
  color: var(--accent-primary);
}

.prose pre {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.25rem;
  overflow-x: auto;
  margin: 1.5rem 0;
}

.prose pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: var(--text-primary);
}

/* ==========================================================================
   Single Post Layout
   ========================================================================== */

.post-single {
  max-width: 820px;
  margin-left: auto;
  margin-right: auto;
  padding: 3rem 1.5rem 5rem;
}

.post-breadcrumb {
  margin-bottom: 1.5rem;
}

.post-breadcrumb a {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  font-size: 0.875rem;
  font-weight: 500;
  color: var(--text-muted);
}

.post-breadcrumb a:hover {
  color: var(--accent-primary);
}

.post-header {
  margin-bottom: 2.5rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 1.75rem;
}

.post-title {
  font-size: 2.35rem;
  font-weight: 800;
  line-height: 1.25;
  margin-bottom: 1rem;
}

.post-meta {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: var(--text-muted);
}

.meta-dot {
  color: var(--border-color);
}

.post-tags-list {
  display: flex;
  gap: 0.35rem;
}

.post-footer-callout {
  margin: 3.5rem 0 2rem;
  padding-top: 2rem;
  border-top: 1px solid var(--border-color);
}

.callout-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1.5rem;
  box-shadow: var(--shadow-sm);
}

.callout-author {
  display: flex;
  align-items: center;
  gap: 1.25rem;
}

.callout-avatar {
  width: 56px;
  height: 56px;
  border-radius: 50%;
  border: 2px solid var(--accent-primary);
}

.callout-name {
  font-size: 1.1rem;
  margin-bottom: 0.2rem;
}

.callout-bio {
  font-size: 0.85rem;
  margin-bottom: 0;
  color: var(--text-muted);
}

.callout-actions {
  display: flex;
  gap: 0.75rem;
  flex-shrink: 0;
}

.post-nav {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
  margin-top: 2rem;
}

.post-nav-item {
  display: flex;
  flex-direction: column;
  padding: 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  transition: all 0.2s ease;
}

.post-nav-item:hover {
  border-color: var(--border-hover);
  text-decoration: none;
}

.nav-sub {
  font-size: 0.8rem;
  color: var(--text-muted);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.nav-title {
  font-weight: 600;
  font-size: 0.95rem;
  color: var(--text-primary);
  line-height: 1.3;
}

/* ==========================================================================
   CV Page & Timeline
   ========================================================================== */

.cv-page {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.cv-actions-bar {
  display: flex;
  gap: 0.75rem;
  flex-wrap: wrap;
  padding: 1.25rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
}

.cv-section-title {
  font-size: 1.5rem;
  margin-bottom: 1.75rem;
  display: flex;
  align-items: center;
  gap: 0.75rem;
  border-bottom: 1px solid var(--border-color);
  padding-bottom: 0.75rem;
}

.timeline {
  position: relative;
  border-left: 2px solid var(--border-color);
  margin-left: 1rem;
  padding-left: 1.75rem;
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.timeline-item {
  position: relative;
}

.timeline-marker {
  position: absolute;
  top: 4px;
  left: calc(-1.75rem - 7px);
  width: 12px;
  height: 12px;
  border-radius: 50%;
  background-color: var(--accent-primary);
  border: 2px solid var(--bg-primary);
}

.timeline-header {
  display: flex;
  justify-content: space-between;
  align-items: baseline;
  gap: 1rem;
  margin-bottom: 0.35rem;
}

.timeline-role {
  font-size: 1.2rem;
  font-weight: 700;
  margin-bottom: 0;
}

.timeline-date {
  font-size: 0.85rem;
  color: var(--text-muted);
  font-weight: 500;
  white-space: nowrap;
}

.timeline-org {
  font-size: 0.95rem;
  color: var(--text-secondary);
  margin-bottom: 0.75rem;
}

.timeline-summary {
  font-size: 0.925rem;
  margin-bottom: 0.65rem;
}

.timeline-bullets {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.timeline-bullets li {
  margin-bottom: 0.35rem;
}

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

.skill-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.5rem;
}

.skill-group-title {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
  color: var(--accent-primary);
}

.skill-tags {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
}

.skill-tag {
  background-color: var(--bg-secondary);
  border: 1px solid var(--border-color);
  padding: 0.25rem 0.65rem;
  border-radius: var(--radius-sm);
  font-size: 0.825rem;
  font-weight: 500;
}

/* ==========================================================================
   Contact Page
   ========================================================================== */

.contact-grid {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 1.75rem;
}

.contact-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.contact-icon {
  margin-bottom: 1rem;
  color: var(--accent-primary);
}

.contact-card-title {
  font-size: 1.25rem;
  margin-bottom: 0.5rem;
}

.contact-card-desc {
  font-size: 0.925rem;
  color: var(--text-muted);
  margin-bottom: 1rem;
}

.contact-value-link {
  font-size: 1.05rem;
  font-weight: 600;
  color: var(--accent-primary);
  word-break: break-all;
}

.contact-address {
  font-style: normal;
  font-size: 0.95rem;
  line-height: 1.6;
  color: var(--text-secondary);
}

/* ==========================================================================
   Research Page (Detailed)
   ========================================================================== */

.research-page {
  display: flex;
  flex-direction: column;
  gap: 3rem;
}

.research-intro .lead-text {
  font-size: 1.15rem;
  line-height: 1.65;
  color: var(--text-primary);
}

.research-list {
  display: flex;
  flex-direction: column;
  gap: 2.25rem;
}

.research-block {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-lg);
  padding: 2.25rem;
  box-shadow: var(--shadow-sm);
}

.research-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.4rem;
  margin-bottom: 0.75rem;
}

.research-title {
  font-size: 1.65rem;
  margin-bottom: 1rem;
}

.research-desc {
  font-size: 1rem;
  line-height: 1.7;
  color: var(--text-secondary);
  margin-bottom: 1.5rem;
}

.highlights-heading {
  font-size: 1.05rem;
  margin-bottom: 0.65rem;
}

.highlights-list {
  margin: 0;
  padding-left: 1.25rem;
  font-size: 0.95rem;
  color: var(--text-secondary);
}

.highlights-list li {
  margin-bottom: 0.4rem;
}

.research-cta-banner {
  background: linear-gradient(135deg, var(--bg-secondary) 0%, var(--bg-card) 100%);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2.25rem;
  text-align: center;
}

.research-cta-banner h3 {
  font-size: 1.4rem;
  margin-bottom: 0.5rem;
}

.research-cta-banner p {
  max-width: 600px;
  margin: 0 auto 1.5rem;
}

/* ==========================================================================
   Blog Page Details
   ========================================================================== */

.blog-header-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 2rem;
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 1.75rem;
  margin-bottom: 2.5rem;
  box-shadow: var(--shadow-sm);
}

.blog-banner-text p {
  margin-bottom: 0;
  font-size: 1.05rem;
}

.blog-banner-rss {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 0.4rem;
  flex-shrink: 0;
}

.rss-hint {
  font-size: 0.75rem;
  color: var(--text-muted);
}

.blog-posts-list {
  display: flex;
  flex-direction: column;
  gap: 2rem;
}

.blog-card {
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  border-radius: var(--radius-md);
  padding: 2rem;
  box-shadow: var(--shadow-sm);
  transition: all 0.2s ease;
}

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

.blog-card-meta {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  margin-bottom: 0.75rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.blog-card-title {
  font-size: 1.5rem;
  margin-bottom: 0.75rem;
}

.blog-card-title a {
  color: var(--text-primary);
}

.blog-card-title a:hover {
  color: var(--accent-primary);
  text-decoration: underline;
}

.blog-card-excerpt {
  font-size: 0.95rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1.25rem;
}

.read-more-link {
  font-weight: 600;
  font-size: 0.925rem;
  color: var(--accent-primary);
}

/* ==========================================================================
   Footer
   ========================================================================== */

.site-footer {
  background-color: var(--bg-secondary);
  border-top: 1px solid var(--border-color);
  padding: 4.5rem 0 2.5rem;
  margin-top: auto;
}

.footer-grid {
  display: grid;
  grid-template-columns: 1.6fr 1fr 1.4fr;
  gap: 3rem;
  margin-bottom: 3rem;
}

.footer-heading {
  font-size: 1.05rem;
  font-weight: 700;
  margin-bottom: 1rem;
}

.footer-desc {
  font-size: 0.9rem;
  color: var(--text-secondary);
  line-height: 1.6;
  margin-bottom: 1rem;
}

.footer-location {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.footer-nav {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.footer-nav a {
  font-size: 0.9rem;
  color: var(--text-secondary);
}

.footer-nav a:hover {
  color: var(--accent-primary);
  text-decoration: none;
}

.social-links {
  display: flex;
  flex-direction: column;
  gap: 0.65rem;
}

.social-link {
  display: inline-flex;
  align-items: center;
  gap: 0.65rem;
  font-size: 0.9rem;
  color: var(--text-secondary);
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-sm);
  background-color: var(--bg-card);
  border: 1px solid var(--border-color);
  width: fit-content;
  transition: all 0.2s ease;
}

.social-link:hover {
  border-color: var(--accent-primary);
  color: var(--accent-primary);
  text-decoration: none;
}

.social-link.rss-pill {
  border-color: rgba(249, 115, 22, 0.4);
  color: var(--rss-color);
  background-color: var(--rss-bg);
}

.social-link.rss-pill:hover {
  background-color: var(--rss-color);
  color: #ffffff;
}

.footer-bottom {
  border-top: 1px solid var(--border-color);
  padding-top: 2rem;
  display: flex;
  justify-content: space-between;
  align-items: center;
  font-size: 0.85rem;
  color: var(--text-muted);
  flex-wrap: wrap;
  gap: 1rem;
}

.footer-bottom p {
  margin: 0;
}

/* ==========================================================================
   Responsive Breakpoints
   ========================================================================== */

@media (max-width: 992px) {
  .hero-container {
    grid-template-columns: 1fr;
    gap: 2.5rem;
  }

  .hero-sidebar {
    max-width: 480px;
    margin: 0 auto;
    width: 100%;
  }

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

  .grid-3 {
    grid-template-columns: repeat(2, 1fr);
  }

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

  .footer-grid {
    grid-template-columns: 1fr 1fr;
  }

  .footer-about {
    grid-column: span 2;
  }

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

/* Menú hamburguesa en tablet: la navegación completa deja de caber por debajo de ~1000px (ES) */
@media (max-width: 1100px) {
  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    display: none;
    box-shadow: var(--shadow-lg);
  }

  .site-nav.open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.5rem;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
  }

  .header-actions {
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: 1rem;
    width: 100%;
    justify-content: flex-start;
  }

  .nav-toggle {
    display: flex;
  }
}

@media (max-width: 768px) {
  .site-nav {
    position: fixed;
    top: var(--header-height);
    left: 0;
    right: 0;
    background-color: var(--bg-primary);
    border-bottom: 1px solid var(--border-color);
    padding: 1.5rem;
    flex-direction: column;
    align-items: flex-start;
    gap: 1.25rem;
    display: none;
    box-shadow: var(--shadow-lg);
  }

  .site-nav.open {
    display: flex;
  }

  .nav-list {
    flex-direction: column;
    align-items: flex-start;
    width: 100%;
    gap: 0.5rem;
  }

  .nav-link {
    width: 100%;
    padding: 0.75rem;
    font-size: 1rem;
  }

  .header-actions {
    border-left: none;
    border-top: 1px solid var(--border-color);
    padding-left: 0;
    padding-top: 1rem;
    width: 100%;
    justify-content: flex-start;
  }

  .nav-toggle {
    display: flex;
  }

  .hero-title {
    font-size: 2.2rem;
  }

  .grid-2, .grid-3, .posts-grid, .contact-grid, .skills-grid {
    grid-template-columns: 1fr;
  }

  .metrics-grid {
    grid-template-columns: 1fr 1fr;
  }

  .section-header {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }

  .blog-header-banner {
    flex-direction: column;
    align-items: flex-start;
  }

  .blog-banner-rss {
    align-items: flex-start;
  }

  .rss-banner {
    flex-direction: column;
    align-items: flex-start;
    gap: 1rem;
  }

  .callout-card {
    flex-direction: column;
    align-items: flex-start;
  }

  .post-nav {
    grid-template-columns: 1fr;
  }

  .footer-grid {
    grid-template-columns: 1fr;
  }

  .footer-about {
    grid-column: span 1;
  }
}


/* ==========================================================================
   Adaptaciones Asier Urueña: monograma en lugar de foto, certificados
   ========================================================================== */
.profile-monogram {
  display: flex;
  align-items: center;
  justify-content: center;
  background: linear-gradient(135deg, #2563eb, #1d4ed8);
  color: #ffffff;
  font-weight: 800;
  font-size: 2.25rem;
  letter-spacing: -0.03em;
}
[data-theme="dark"] .profile-monogram { background: linear-gradient(135deg, #38bdf8, #2563eb); }
.callout-avatar.profile-monogram { font-size: 1.15rem; flex-shrink: 0; }
.cert-card .cert-meta { font-size: 0.85rem; color: var(--text-muted); margin-bottom: 0.25rem; }
.cert-card .cert-honor { font-size: 0.8rem; font-weight: 600; color: var(--accent-primary); margin-bottom: 0.75rem; }
.cert-card .btn { margin-top: auto; align-self: flex-start; }
.cert-card { display: flex; flex-direction: column; }
.notfound { text-align: center; padding: 4rem 0; }
.notfound .btn { margin-top: 1rem; }


/* ==== i18n y CV ampliado ==== */
img.profile-avatar, img.callout-avatar { display: block; object-fit: cover; background: var(--bg-secondary); }
img.callout-avatar { flex-shrink: 0; }
.lang-switch { display: inline-flex; align-items: center; gap: 0.1rem; font-size: 0.8rem; font-weight: 600; margin-right: 0.25rem; }
.lang-switch .lang-link { padding: 0.3rem 0.45rem; border-radius: var(--radius-sm); color: var(--text-secondary); letter-spacing: 0.03em; }
.lang-switch .lang-link:hover { color: var(--accent-primary); background-color: var(--bg-hover); text-decoration: none; }
.lang-switch .lang-link[aria-current="page"] { color: var(--accent-primary); background-color: var(--accent-subtle); }
.lang-switch .lang-sep { color: var(--border-hover); }
.hero-headline { font-size: 1.05rem; font-weight: 600; color: var(--accent-primary); margin-bottom: 1rem; line-height: 1.5; }
.profile-meta-item a { word-break: break-all; }
.timeline-bullets { margin-top: 0.5rem; }
.timeline-org a { color: inherit; text-decoration: underline; text-underline-offset: 2px; }
.cv-subsection-note { font-size: 0.9rem; color: var(--text-muted); margin: -0.5rem 0 1.25rem; }
.project-card { display: flex; flex-direction: column; }
.project-card .timeline-summary { flex: 1; }
.project-card .btn { align-self: flex-start; margin-top: 0.5rem; }
.skill-card .skill-subtitle { font-size: 0.8rem; font-weight: 600; text-transform: uppercase; letter-spacing: 0.04em; color: var(--text-muted); margin: 0 0 0.5rem; }
.contact-card-email .contact-value-link { word-break: break-all; }
.lang-hint { margin-top: 1rem; }
@media (max-width: 768px) {
  .lang-switch { margin-right: 0.5rem; }
  .lang-switch .lang-link { padding: 0.45rem 0.7rem; }
}


/* ==== Tokitek ==== */
a.metric-link { display: block; text-decoration: none; color: inherit; border-radius: var(--radius-md); }
a.metric-link:hover { background-color: var(--bg-hover); text-decoration: none; }
a.metric-link .metric-num { text-decoration: none; }
.tk-cv-summary p { margin: 0 0 0.9rem; color: var(--text-secondary); line-height: 1.65; }
.tk-actions { display: flex; flex-wrap: wrap; gap: 0.5rem; }
.tk-summary { display: flex; gap: 1.25rem; align-items: center; }
.tk-logo { width: 56px; height: 56px; border-radius: 14px; flex-shrink: 0; object-fit: cover; background: var(--bg-secondary); }
.tk-summary-body { min-width: 0; }
.tk-summary-body p { margin: 0; color: var(--text-secondary); line-height: 1.6; }
.tk-summary-body .pub-external-links { margin-top: 0.85rem; }
.tk-metrics { grid-template-columns: repeat(3, 1fr); gap: 1rem; margin: 0 0 2rem; }
.tk-metrics .metric-card { background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); box-shadow: var(--shadow-sm); }
.tk-h2 { font-size: 1.5rem; font-weight: 700; margin: 0 0 1.25rem; }
.tk-grid { display: grid; grid-template-columns: repeat(3, 1fr); gap: 1.25rem; }
.tk-card { display: flex; flex-direction: column; gap: 0.75rem; background-color: var(--bg-card); border: 1px solid var(--border-color); border-radius: var(--radius-md); padding: 1.25rem; box-shadow: var(--shadow-sm); min-width: 0; }
.tk-card-head { display: flex; gap: 0.85rem; align-items: center; }
.tk-icon { width: 48px; height: 48px; border-radius: 12px; flex-shrink: 0; object-fit: cover; background: var(--bg-secondary); }
.tk-card h3 { margin: 0 0 0.3rem; font-size: 1.05rem; font-weight: 700; color: var(--text-primary); }
.tk-card p { margin: 0; color: var(--text-secondary); line-height: 1.55; font-size: 0.92rem; }
.tk-card .tk-actions { margin-top: auto; padding-top: 0.25rem; min-height: 2rem; }
.tk-card, .tk-summary-body { overflow-wrap: anywhere; }
@media (max-width: 1024px) { .tk-grid { grid-template-columns: repeat(2, 1fr); } }
@media (max-width: 640px) {
  .tk-grid { grid-template-columns: 1fr; }
  .tk-summary { align-items: flex-start; }
  .tk-metrics { grid-template-columns: 1fr; gap: 0.75rem; }
}