/* ============================================================
   Laboratorio LLM Local — styles.css
   Design system: dark theme, Inter font, emerald/cyan accents
   Mobile-first, breakpoints at 768px and 1100px
   ============================================================ */

/* ── Design tokens ── */
:root {
  --bg:           #0B1220;
  --surface:      #111A2E;
  --surface-2:    #1A2640;
  --border:       rgba(255, 255, 255, 0.08);
  --text:         #E6EDF7;
  --muted:        #94A3B8;
  --accent:       #10B981;
  --accent-dim:   rgba(16, 185, 129, 0.15);
  --cyan:         #22D3EE;
  --cyan-dim:     rgba(34, 211, 238, 0.15);
  --amber:        #F59E0B;
  --amber-dim:    rgba(245, 158, 11, 0.15);
  --danger:       #EF4444;
  --danger-dim:   rgba(239, 68, 68, 0.15);
  --radius:       16px;
  --radius-sm:    8px;
  --radius-xs:    4px;
  --max-w:        1100px;
  --nav-h:        60px;
  --transition:   200ms ease;
  --reveal-dur:   400ms;
  --font:         'Inter', system-ui, -apple-system, sans-serif;
}

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

html {
  scroll-behavior: smooth;
  font-size: 16px;
}

body {
  font-family: var(--font);
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Reading progress bar ── */
#reading-progress {
  position: fixed;
  top: 0;
  left: 0;
  width: 0%;
  height: 2px;
  background: var(--accent);
  z-index: 1000;
  transition: width 100ms linear;
}

/* ── Typography ── */
h1, h2, h3, h4 {
  font-weight: 700;
  line-height: 1.25;
  color: var(--text);
}

h1 { font-size: clamp(2rem, 5vw, 3rem); }
h2 { font-size: clamp(1.5rem, 3vw, 2rem); margin-bottom: 0.5rem; }
h3 { font-size: clamp(1.1rem, 2vw, 1.35rem); margin-bottom: 0.4rem; }
h4 { font-size: 1rem; }

p { margin-bottom: 1rem; color: var(--text); }
p:last-child { margin-bottom: 0; }

a {
  color: var(--accent);
  text-decoration: none;
  transition: color var(--transition), opacity var(--transition);
}
a:hover, a:focus-visible { color: var(--cyan); text-decoration: underline; }

ul, ol { padding-left: 1.5rem; }
li { margin-bottom: 0.35rem; }

code {
  font-family: 'JetBrains Mono', 'Fira Code', 'Cascadia Code', monospace;
  font-size: 0.875rem;
  background: var(--surface-2);
  padding: 0.1em 0.4em;
  border-radius: var(--radius-xs);
  color: var(--cyan);
}

/* ── Layout ── */
.container {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
}

section {
  padding: 5rem 0;
}

.section-label {
  display: inline-block;
  font-size: 0.75rem;
  font-weight: 600;
  letter-spacing: 0.12em;
  text-transform: uppercase;
  color: var(--accent);
  margin-bottom: 0.75rem;
}

.section-intro {
  color: var(--muted);
  font-size: 1.05rem;
  max-width: 640px;
  margin-bottom: 2.5rem;
}

/* ── Navigation ── */
header {
  position: sticky;
  top: 0;
  z-index: 900;
  background: rgba(11, 18, 32, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--border);
  height: var(--nav-h);
}

nav {
  max-width: var(--max-w);
  margin: 0 auto;
  padding: 0 1.25rem;
  height: 100%;
  display: flex;
  align-items: center;
  gap: 2rem;
}

.nav-wordmark {
  font-weight: 800;
  font-size: 1.05rem;
  color: var(--text);
  text-decoration: none;
  white-space: nowrap;
  flex-shrink: 0;
}
.nav-wordmark:hover { color: var(--accent); text-decoration: none; }

.nav-links {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  flex-wrap: wrap;
  list-style: none;
  padding: 0;
  margin: 0 0 0 auto;
}

.nav-links a {
  font-size: 0.8rem;
  font-weight: 500;
  color: var(--muted);
  text-decoration: none;
  padding: 0.35rem 0.65rem;
  border-radius: var(--radius-xs);
  transition: background var(--transition), color var(--transition);
}
.nav-links a:hover, .nav-links a:focus-visible {
  background: var(--accent-dim);
  color: var(--accent);
  text-decoration: none;
}

/* ── Hero ── */
#hero {
  padding: 6rem 0 5rem;
  position: relative;
  overflow: hidden;
}

#hero::before {
  content: '';
  position: absolute;
  inset: 0;
  background: radial-gradient(ellipse 80% 60% at 50% -10%, rgba(16, 185, 129, 0.08), transparent 70%);
  pointer-events: none;
}

.hero-eyebrow {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--accent);
  background: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: 99px;
  padding: 0.3rem 0.9rem;
  margin-bottom: 1.5rem;
  letter-spacing: 0.05em;
}

.hero-eyebrow::before {
  content: '';
  width: 6px;
  height: 6px;
  background: var(--accent);
  border-radius: 50%;
}

#hero h1 {
  margin-bottom: 1.25rem;
  background: linear-gradient(135deg, var(--text) 0%, var(--cyan) 100%);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.hero-subtitle {
  font-size: clamp(1rem, 2vw, 1.2rem);
  color: var(--muted);
  max-width: 640px;
  margin-bottom: 2.5rem;
  line-height: 1.65;
}

.stat-chips {
  display: flex;
  flex-wrap: wrap;
  gap: 0.75rem;
  margin-bottom: 2rem;
}

.stat-chip {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.25rem;
  min-width: 140px;
}

.stat-chip .stat-value {
  font-size: 1.6rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.stat-chip .stat-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.3rem;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8rem;
  color: var(--amber);
  background: var(--amber-dim);
  border: 1px solid rgba(245, 158, 11, 0.25);
  border-radius: 99px;
  padding: 0.35rem 0.9rem;
}

/* ── Cards ── */
.card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.card-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.card-icon {
  font-size: 1.75rem;
  margin-bottom: 0.75rem;
  display: block;
}

/* ── Tables ── */
.table-wrapper {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border-radius: var(--radius-sm);
  border: 1px solid var(--border);
}

table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.9rem;
}

thead {
  background: var(--surface-2);
}

th {
  padding: 0.85rem 1rem;
  text-align: left;
  font-weight: 600;
  font-size: 0.8rem;
  letter-spacing: 0.05em;
  text-transform: uppercase;
  color: var(--muted);
  white-space: nowrap;
}

td {
  padding: 0.75rem 1rem;
  border-top: 1px solid var(--border);
  vertical-align: top;
}

tbody tr:hover {
  background: rgba(255, 255, 255, 0.02);
}

.td-accent { color: var(--accent); font-weight: 600; }
.td-muted  { color: var(--muted); }

/* ── Details / summary (accessible data tables) ── */
details {
  margin-top: 1rem;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
}

summary {
  cursor: pointer;
  padding: 0.65rem 1rem;
  font-size: 0.8rem;
  font-weight: 600;
  color: var(--muted);
  background: var(--surface-2);
  list-style: none;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  user-select: none;
  transition: color var(--transition);
}
summary::-webkit-details-marker { display: none; }
summary::before {
  content: '▶';
  font-size: 0.6rem;
  transition: transform var(--transition);
}
details[open] summary::before { transform: rotate(90deg); }
details[open] summary { color: var(--text); }
summary:hover { color: var(--text); }

details .table-wrapper {
  border: none;
  border-radius: 0;
  border-top: 1px solid var(--border);
}

/* ── Section: Banca ── */
#banca .table-wrapper { margin-top: 1.5rem; }

.td-cloud { color: var(--amber); }
.td-onprem { color: var(--accent); }

/* ── Section: Reto Técnico ── */
.profile-selector {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.75rem;
}

.profile-btn {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  color: var(--muted);
  font-family: var(--font);
  font-size: 0.85rem;
  font-weight: 600;
  padding: 0.5rem 1.1rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.profile-btn:hover {
  background: var(--surface);
  color: var(--text);
  border-color: rgba(255, 255, 255, 0.2);
}

.profile-btn.active {
  background: var(--accent-dim);
  border-color: var(--accent);
  color: var(--accent);
}

.memory-layout {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.memory-layout h3 {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.mem-row {
  display: flex;
  flex-direction: column;
  gap: 0.35rem;
  margin-bottom: 1.25rem;
}

.mem-row:last-child { margin-bottom: 0; }

.mem-label {
  display: flex;
  justify-content: space-between;
  font-size: 0.82rem;
  color: var(--muted);
}

.mem-label strong {
  color: var(--text);
  font-weight: 600;
}

.mem-bar-track {
  height: 18px;
  background: var(--surface-2);
  border-radius: 99px;
  overflow: hidden;
  position: relative;
}

.mem-bar-fill {
  height: 100%;
  border-radius: 99px;
  transition: width 500ms cubic-bezier(0.4, 0, 0.2, 1);
  position: relative;
}

.mem-bar-fill.vram-used {
  background: linear-gradient(90deg, var(--accent), var(--cyan));
}

.mem-bar-fill.ram-used {
  background: linear-gradient(90deg, var(--amber), #F97316);
}

.mem-bar-fill.nvme-model {
  background: linear-gradient(90deg, var(--cyan), #8B5CF6);
  width: 100%;
}

.profile-stats {
  display: grid;
  grid-template-columns: repeat(2, 1fr);
  gap: 0.75rem;
  margin-bottom: 1.5rem;
}

.profile-stat {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  padding: 0.9rem 1rem;
}

.profile-stat .ps-value {
  font-size: 1.4rem;
  font-weight: 800;
  color: var(--accent);
  font-variant-numeric: tabular-nums;
  line-height: 1;
}

.profile-stat .ps-label {
  font-size: 0.75rem;
  color: var(--muted);
  margin-top: 0.25rem;
}

.profile-callout {
  background: var(--accent-dim);
  border: 1px solid rgba(16, 185, 129, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.85rem 1.1rem;
  font-size: 0.875rem;
  color: var(--text);
  margin-bottom: 2rem;
  transition: opacity var(--transition);
}

/* ── Terms / Tooltips ── */
.term {
  border-bottom: 1px dashed var(--muted);
  cursor: help;
  color: var(--cyan);
  position: relative;
}

.term:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 2px;
  border-radius: 2px;
}

[role="tooltip"] {
  position: fixed;
  z-index: 800;
  max-width: 280px;
  background: var(--surface-2);
  border: 1px solid rgba(34, 211, 238, 0.3);
  border-radius: var(--radius-sm);
  padding: 0.65rem 0.9rem;
  font-size: 0.8rem;
  color: var(--text);
  line-height: 1.55;
  box-shadow: 0 4px 24px rgba(0, 0, 0, 0.5);
  pointer-events: none;
  opacity: 0;
  transition: opacity 150ms ease;
}

[role="tooltip"].visible {
  opacity: 1;
}

/* ── Code block ── */
.code-block {
  background: #060D1A;
  border: 1px solid var(--border);
  border-radius: var(--radius-sm);
  overflow: hidden;
  margin-top: 2rem;
}

.code-block-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--surface-2);
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
  font-size: 0.78rem;
  color: var(--muted);
}

.code-block-header .cb-lang {
  color: var(--accent);
  font-weight: 600;
}

.code-block pre {
  padding: 1.25rem 1.5rem;
  overflow-x: auto;
  margin: 0;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.8rem;
  line-height: 1.7;
  color: #CBD5E1;
}

.code-block code {
  background: none;
  padding: 0;
  color: inherit;
  font-size: inherit;
}

.cmd-comment { color: #64748B; }
.cmd-flag    { color: var(--cyan); }
.cmd-value   { color: var(--amber); }
.cmd-path    { color: #A78BFA; }

/* ── Section: Rendimiento ── */
.chart-container {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
}

.chart-title {
  font-size: 0.9rem;
  font-weight: 600;
  color: var(--muted);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  margin-bottom: 1.25rem;
}

.chart-canvas-wrap {
  position: relative;
  height: 280px;
}

.optimization-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
  margin-top: 1.5rem;
}

.opt-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
}

.opt-badge {
  display: inline-block;
  font-size: 0.7rem;
  font-weight: 700;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  padding: 0.2rem 0.6rem;
  border-radius: 99px;
  margin-bottom: 0.75rem;
}

.opt-badge.green {
  background: var(--accent-dim);
  color: var(--accent);
}

.opt-badge.cyan {
  background: var(--cyan-dim);
  color: var(--cyan);
}

.speedup-number {
  font-size: 2rem;
  font-weight: 800;
  color: var(--accent);
  line-height: 1;
  font-variant-numeric: tabular-nums;
}

.speedup-detail {
  font-size: 0.85rem;
  color: var(--muted);
  margin-top: 0.4rem;
}

/* ── Section: Harness ── */
.flow-diagram {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  margin-bottom: 1.5rem;
  overflow: hidden;
}

.flow-diagram svg {
  width: 100%;
  height: auto;
  max-height: 320px;
}

.flow-detail-panel {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-left: 3px solid var(--accent);
  border-radius: var(--radius-sm);
  padding: 1.1rem 1.25rem;
  font-size: 0.875rem;
  margin-bottom: 1.5rem;
  min-height: 80px;
  transition: opacity var(--transition);
}

.flow-detail-panel .fdp-title {
  font-weight: 700;
  color: var(--accent);
  margin-bottom: 0.4rem;
}

/* Terminal */
.terminal-wrap {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  overflow: hidden;
  margin-top: 1.5rem;
}

.terminal-bar {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  background: var(--surface-2);
  padding: 0.65rem 1rem;
  border-bottom: 1px solid var(--border);
}

.terminal-dot {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.terminal-dot.red    { background: #FF5F57; }
.terminal-dot.yellow { background: #FEBC2E; }
.terminal-dot.green  { background: #28C840; }

.terminal-title {
  font-size: 0.78rem;
  color: var(--muted);
  margin-left: auto;
  font-family: monospace;
}

.terminal-body {
  padding: 1.25rem 1.5rem;
  font-family: 'JetBrains Mono', 'Fira Code', monospace;
  font-size: 0.78rem;
  line-height: 1.8;
  min-height: 280px;
  max-height: 480px;
  overflow-y: auto;
  color: #4ADE80;
}

.terminal-body .t-muted    { color: #475569; }
.terminal-body .t-header   { color: #94A3B8; font-weight: 600; }
.terminal-body .t-tool     { color: #FBBF24; }
.terminal-body .t-result   { color: #94A3B8; }
.terminal-body .t-done     { color: var(--accent); font-weight: 700; }
.terminal-body .t-stats    { color: #64748B; }
.terminal-body .t-table-h  { color: #94A3B8; font-weight: 700; }
.terminal-body .t-table-r  { color: #CBD5E1; }
.terminal-body .t-cursor   {
  display: inline-block;
  width: 8px;
  height: 1em;
  background: #4ADE80;
  vertical-align: text-bottom;
  animation: blink 1s step-end infinite;
}

@keyframes blink {
  0%, 100% { opacity: 1; }
  50%       { opacity: 0; }
}

.terminal-controls {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.75rem 1.25rem;
  border-top: 1px solid var(--border);
  background: var(--surface-2);
}

.terminal-disclaimer {
  font-size: 0.75rem;
  color: var(--muted);
  font-style: italic;
  margin-left: auto;
}

.btn {
  display: inline-flex;
  align-items: center;
  gap: 0.4rem;
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: var(--radius-xs);
  color: var(--text);
  font-family: var(--font);
  font-size: 0.8rem;
  font-weight: 600;
  padding: 0.45rem 0.9rem;
  cursor: pointer;
  transition: background var(--transition), border-color var(--transition), color var(--transition);
}

.btn:hover {
  background: var(--surface);
  border-color: rgba(255, 255, 255, 0.2);
}

.btn.btn-accent {
  background: var(--accent-dim);
  border-color: rgba(16, 185, 129, 0.4);
  color: var(--accent);
}

.btn.btn-accent:hover {
  background: rgba(16, 185, 129, 0.25);
}

/* ── Section: Hallazgos ── */
.insights-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.insight-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.5rem;
  position: relative;
  overflow: hidden;
}

.insight-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 3px;
}

.insight-card.ic-green::before  { background: var(--accent); }
.insight-card.ic-cyan::before   { background: var(--cyan); }
.insight-card.ic-amber::before  { background: var(--amber); }
.insight-card.ic-purple::before { background: #8B5CF6; }

.insight-number {
  font-size: 2.25rem;
  font-weight: 900;
  opacity: 0.12;
  position: absolute;
  top: 0.75rem;
  right: 1.25rem;
  line-height: 1;
  color: var(--text);
  user-select: none;
}

.insight-card h3 {
  font-size: 1rem;
  margin-bottom: 0.6rem;
  padding-right: 2.5rem;
}

.insight-card p {
  font-size: 0.875rem;
  color: var(--muted);
  line-height: 1.65;
}

.insight-highlight {
  font-weight: 700;
  color: var(--accent);
}

/* ── Section: Aplicación ── */
.usecase-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 1.25rem;
}

.usecase-card {
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 1.75rem;
  transition: transform var(--transition), box-shadow var(--transition);
}

.usecase-card:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

.usecase-icon {
  width: 44px;
  height: 44px;
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 1.35rem;
  margin-bottom: 1rem;
}

.usecase-icon.green  { background: var(--accent-dim); }
.usecase-icon.cyan   { background: var(--cyan-dim); }
.usecase-icon.amber  { background: var(--amber-dim); }

.usecase-card h3 { margin-bottom: 0.6rem; }
.usecase-card p  { font-size: 0.875rem; color: var(--muted); }

/* ── Section: Autor ── */
#autor {
  background: var(--surface);
  border-top: 1px solid var(--border);
}

.autor-inner {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.autor-name {
  font-size: 1.35rem;
  font-weight: 700;
}

.autor-role {
  color: var(--muted);
  margin-bottom: 1rem;
}

.skill-tags {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-bottom: 1.25rem;
}

.skill-tag {
  background: var(--surface-2);
  border: 1px solid var(--border);
  border-radius: 99px;
  padding: 0.25rem 0.75rem;
  font-size: 0.78rem;
  color: var(--muted);
  font-weight: 500;
}

.cta-link {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  background: var(--accent);
  color: #000;
  font-weight: 700;
  font-size: 0.9rem;
  padding: 0.75rem 1.5rem;
  border-radius: var(--radius-sm);
  text-decoration: none;
  transition: background var(--transition), transform var(--transition);
}

.cta-link:hover {
  background: #0EA571;
  color: #000;
  text-decoration: none;
  transform: translateY(-1px);
}

/* ── Footer ── */
footer {
  background: var(--surface);
  border-top: 1px solid var(--border);
  padding: 2.5rem 0;
}

.footer-inner {
  display: flex;
  flex-direction: column;
  align-items: flex-start;
  gap: 1.25rem;
}

.footer-links {
  display: flex;
  flex-wrap: wrap;
  gap: 1rem;
  list-style: none;
  padding: 0;
}

.footer-links a {
  font-size: 0.85rem;
  color: var(--muted);
  text-decoration: none;
  transition: color var(--transition);
}

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

.footer-copy {
  font-size: 0.8rem;
  color: var(--muted);
}

.footer-copy a { color: var(--muted); }
.footer-copy a:hover { color: var(--text); }

/* ── Scroll reveal ── */
.reveal {
  opacity: 0;
  transform: translateY(20px);
  transition: opacity var(--reveal-dur) ease, transform var(--reveal-dur) ease;
}

.reveal.visible {
  opacity: 1;
  transform: translateY(0);
}

/* ── Flow diagram node styles ── */
.flow-node {
  cursor: pointer;
  transition: filter 150ms ease;
}

.flow-node:hover rect,
.flow-node:hover ellipse {
  filter: brightness(1.3);
}

.flow-node.fn-active rect {
  stroke-width: 2px !important;
}

/* ── Responsive: 768px ── */
@media (min-width: 768px) {
  section { padding: 6rem 0; }

  .card-grid        { grid-template-columns: repeat(2, 1fr); }
  .insights-grid    { grid-template-columns: repeat(2, 1fr); }
  .usecase-grid     { grid-template-columns: repeat(3, 1fr); }
  .optimization-grid{ grid-template-columns: repeat(2, 1fr); }
  .profile-stats    { grid-template-columns: repeat(4, 1fr); }

  .autor-inner {
    flex-direction: row;
    align-items: flex-start;
    gap: 3rem;
  }

  .footer-inner {
    flex-direction: row;
    align-items: center;
    justify-content: space-between;
  }
}

/* ── Responsive: 1100px ── */
@media (min-width: 1100px) {
  .nav-links a { font-size: 0.85rem; }
}

/* ── Reduced motion ── */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
    scroll-behavior: auto !important;
  }

  .reveal {
    opacity: 1;
    transform: none;
  }

  html { scroll-behavior: auto; }
  .t-cursor { animation: none; opacity: 1; }
  #reading-progress { transition: none; }
}