/* ═══════════════════════════════════════════════════════
   ModelSpec v2 - style.css
   Layout: Fixed left sidebar + compact main area
   ─ Viewport-first. No hero bloat. Search in header.
   ─ Brutalist industrial terminal. Amber on dark steel.
   ═══════════════════════════════════════════════════════ */

/* ── DESIGN TOKENS ── */
:root {
  --color-bg: #080808;
  --color-surface: #101010;
  --color-elevated: #181818;
  --color-border: #262626;
  --color-border-active: #3d3d3d;
  --color-bracket: #2a2a2a;

  --color-text: #d4d4d4;
  --color-text-secondary: #9a9a9a;
  --color-text-muted: #8a8a8a;

  --accent-amber: #FF9F0A;
  --accent-steel: #5B7F95;
  --accent-phosphor: #33FF57;
  --accent-red: #FF453A;

  /* JS-compat var names (remapped) */
  --accent-blue: #FF9F0A;
  --accent-purple: #5B7F95;
  --accent-cyan: #33FF57;
  --accent-green: #33FF57;
  --accent-pink: #FF453A;

  --gradient-main: linear-gradient(135deg, #FF9F0A 0%, #E08900 100%);

  --font-body: 'Sora', sans-serif;
  --font-mono: 'Fira Code', 'SF Mono', 'Cascadia Code', monospace;

  --text-xs: 0.65rem;
  --text-sm: 0.75rem;
  --text-base: 0.875rem;

  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-6: 1.25rem;

  --radius-none: 0;
  --radius-sm: 2px;

  --duration-fast: 0.12s;
  --duration-base: 0.18s;
  --ease-out: cubic-bezier(0.16, 1, 0.3, 1);
}

@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    transition-duration: 0.01ms !important;
  }
}

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

html {
  font-size: 125%;
  scroll-behavior: smooth;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-active) transparent;
}

body {
  font-family: var(--font-body);
  background: var(--color-bg);
  color: var(--color-text);
  min-height: 100vh;
  overflow-x: hidden;
  line-height: 1.4;
  -webkit-font-smoothing: antialiased;
  display: flex;
}

::-webkit-scrollbar {
  width: 4px;
}

::-webkit-scrollbar-track {
  background: transparent;
}

::-webkit-scrollbar-thumb {
  background: var(--color-border-active);
  border-radius: 0;
}

:focus-visible {
  outline: 1px solid var(--accent-amber);
  outline-offset: 1px;
}

/* ═══════════════════════════════════════════
   SIDEBAR
   ═══════════════════════════════════════════ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  z-index: 100;
  width: 160px;
  background: var(--color-surface);
  border-right: 1px solid var(--color-border);
  display: flex;
  flex-direction: column;
  padding: var(--space-4) 0 var(--space-4) 0;
}

.sidebar-brand {
  display: flex;
  align-items: baseline;
  gap: var(--space-2);
  font-weight: 700;
  font-size: 0.85rem;
  letter-spacing: -.01em;
  color: var(--color-text);
  margin-bottom: 2px;
  padding: 0 var(--space-4);
}

.sidebar-ver {
  font-family: var(--font-mono);
  font-size: .52rem;
  font-weight: 700;
  color: var(--accent-amber);
  letter-spacing: .05em;
}

.sidebar-tagline {
  font-family: var(--font-mono);
  font-size: .52rem;
  color: var(--color-text-muted);
  line-height: 1.3;
  letter-spacing: .04em;
  text-transform: uppercase;
  margin-bottom: var(--space-4);
  padding: 0 var(--space-4);
}

.sidebar-nav {
  display: flex;
  flex-direction: column;
  gap: 1px;
  flex: 1;
}

.sidebar-link {
  text-decoration: none;
  color: var(--color-text-secondary);
  font-size: .68rem;
  font-weight: 500;
  padding: .4rem var(--space-4);
  transition: color var(--duration-base), background var(--duration-base), border-color var(--duration-base);
  border-left: 2px solid transparent;
}

.sidebar-link:hover {
  color: var(--color-text);
  background: rgba(255, 255, 255, .02);
}

.sidebar-link.active {
  color: var(--accent-amber);
  border-left-color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.sidebar-api {
  display: flex;
  flex-direction: column;
  gap: 3px;
  font-size: .55rem;
  color: var(--color-text-muted);
  padding: 0 var(--space-4);
}

.api-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.api-dot {
  width: 5px;
  height: 5px;
  background: var(--color-text-muted);
  transition: background .3s, box-shadow .3s;
}

.api-dot.ok {
  background: var(--accent-phosphor);
  box-shadow: 0 0 4px rgba(51, 255, 87, .4);
}

.api-dot.error {
  background: var(--accent-red);
  box-shadow: 0 0 4px rgba(255, 69, 58, .4);
}

/* ═══════════════════════════════════════════
   MAIN AREA
   ═══════════════════════════════════════════ */
.main-area {
  margin-left: 160px;
  flex: 1;
  min-width: 0;
  display: flex;
  flex-direction: column;
}

/* ── Top Bar ── */
.top-bar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: rgba(8, 8, 8, .9);
  backdrop-filter: blur(6px);
  border-bottom: 1px solid var(--color-border);
  padding: var(--space-2) var(--space-4);
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

/* persistent selected-model banner below top bar */
.model-banner-bar {
  background: var(--color-bg);
  border-bottom: 1px solid var(--color-border);
  padding: 0 var(--space-4);
}

.search-bar-wrapper {
  position: relative;
  flex: 1;
  max-width: 680px;
}

.search-input-wrap {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  padding: .3rem .6rem;
  transition: border-color var(--duration-base);
}

.search-input-wrap:focus-within {
  border-color: var(--accent-amber);
}

.search-icon {
  font-family: var(--font-mono);
  font-size: .65rem;
  font-weight: 600;
  color: var(--color-text-muted);
  flex-shrink: 0;
}

.search-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: .78rem;
}

.search-input::placeholder {
  color: var(--color-text-muted);
}

.search-source-toggle {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.src-btn {
  font-family: var(--font-mono);
  font-size: .55rem;
  font-weight: 600;
  padding: .15rem .4rem;
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
}

.src-btn.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: rgba(255, 159, 10, .08);
}

.src-btn:not(.active):hover {
  border-color: var(--color-border-active);
}

.search-clear {
  background: none;
  border: none;
  color: var(--color-text-muted);
  cursor: pointer;
  font-size: .7rem;
  padding: .1rem;
  transition: color var(--duration-base);
}

.search-clear:hover {
  color: var(--accent-red);
}

.search-dropdown {
  position: absolute;
  top: calc(100% + 4px);
  left: 0;
  right: 0;
  z-index: 300;
  background: var(--color-elevated);
  border: 1px solid var(--color-border-active);
  box-shadow: 0 8px 32px rgba(0, 0, 0, .8);
  max-height: 320px;
  overflow-y: auto;
}

.search-results {
  padding: 2px;
}

.search-chips {
  display: flex;
  gap: 3px;
  flex-shrink: 0;
}

.chip-label {
  display: none;
}

.hidden {
  display: none;
}

.search-chip {
  font-family: var(--font-mono);
  font-size: .52rem;
  font-weight: 500;
  padding: .15rem .45rem;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base);
  white-space: nowrap;
  border-radius: 0;
}

.search-chip:hover {
  border-color: var(--accent-amber);
  color: var(--color-text);
}

.search-result-item {
  display: flex;
  align-items: center;
  gap: .5rem;
  padding: .4rem .6rem;
  cursor: pointer;
  transition: background .1s;
}

.search-result-item:hover {
  background: rgba(255, 159, 10, .06);
}

.sri-icon {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  color: var(--accent-amber);
  flex-shrink: 0;
  min-width: 18px;
}

.sri-body {
  flex: 1;
  min-width: 0;
}

.sri-name {
  font-weight: 600;
  font-size: .72rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.sri-meta {
  font-size: .6rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.sri-right {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 1px;
  flex-shrink: 0;
}

.sri-params {
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 600;
  color: var(--accent-amber);
  white-space: nowrap;
}

.sri-params.unknown {
  color: var(--color-text-muted);
  font-style: italic;
}

.sri-params-unknown .sri-params {
  color: var(--color-text-muted);
  font-style: italic;
}

.sri-source {
  font-size: .5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .05rem .3rem;
}

.src-hf {
  background: rgba(255, 159, 10, .12);
  color: var(--accent-amber);
}

.src-or {
  background: rgba(91, 127, 149, .12);
  color: var(--accent-steel);
}

.src-ollama {
  background: rgba(51, 255, 87, .12);
  color: var(--accent-phosphor);
}

.search-status {
  padding: var(--space-4);
  text-align: center;
  color: var(--color-text-secondary);
  font-size: .72rem;
}

.search-spinner {
  display: inline-block;
  width: 14px;
  height: 14px;
  border: 2px solid var(--color-border);
  border-top-color: var(--accent-amber);
  animation: spin .7s linear infinite;
  vertical-align: middle;
  margin-right: .4rem;
}

@keyframes spin {
  to {
    transform: rotate(360deg);
  }
}

/* ═══════════════════════════════════════════
   SECTIONS
   ═══════════════════════════════════════════ */
.section {
  display: none;
  padding: var(--space-4) var(--space-4) 0;
}

.section.active {
  display: block;
}

.section-label {
  font-family: var(--font-mono);
  font-size: .56rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .1em;
  color: var(--color-text-muted);
  margin-bottom: var(--space-3);
  padding-bottom: var(--space-1);
  border-bottom: 1px solid var(--color-border);
}

/* ── Cards ── */
.glass-card {
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: 0;
  box-shadow: 0 1px 0 rgba(0, 0, 0, .5);
  transition: border-color var(--duration-base);
  position: relative;
}

.glass-card::before,
.glass-card::after {
  content: '';
  position: absolute;
  z-index: 1;
  pointer-events: none;
  width: 6px;
  height: 6px;
  border-color: var(--color-bracket);
  border-style: solid;
  transition: all var(--duration-base);
}

.glass-card::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}

.glass-card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

.glass-card:hover::before,
.glass-card:hover::after {
  width: 10px;
  height: 10px;
  border-color: var(--accent-amber);
}

/* ═══════════════════════════════════════════
   CALCULATOR
   ═══════════════════════════════════════════ */
.calc-wrap {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.calc-grid {
  display: grid;
  grid-template-columns: 340px 1fr;
  gap: var(--space-3);
  align-items: start;
}

/* Selected model banner */
.selected-model-banner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(255, 159, 10, .05);
  border: 1px solid rgba(255, 159, 10, .15);
  padding: .4rem .6rem;
}

.smb-name {
  font-weight: 600;
  font-size: .72rem;
}

.smb-meta {
  font-size: .6rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.smb-right {
  display: flex;
  align-items: center;
  gap: .4rem;
}

.smb-src-badge {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  padding: .1rem .3rem;
  background: rgba(255, 159, 10, .1);
  color: var(--accent-amber);
}

.smb-clear {
  font-size: .6rem;
  color: var(--color-text-muted);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--duration-base);
}

.smb-clear:hover {
  color: var(--accent-red);
}

.smb-config-btn {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  padding: .12rem .4rem;
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base), box-shadow var(--duration-base);
}

.smb-config-btn:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  box-shadow: 0 0 8px rgba(255, 159, 10, .15);
}

/* ── Input Panel ── */
.input-panel {
  padding: var(--space-3) var(--space-4);
}

.panel-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-3);
}

.panel-title {
  font-size: .78rem;
  font-weight: 600;
}

.btn-reset {
  font-family: var(--font-mono);
  font-size: .55rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border);
  padding: .15rem .45rem;
  cursor: pointer;
  transition: color var(--duration-base), border-color var(--duration-base);
  border-radius: 0;
}

.btn-reset:hover {
  color: var(--color-text);
  border-color: var(--color-border-active);
}

.input-sep {
  height: 1px;
  background: var(--color-border);
  margin: var(--space-2) 0;
}

.field-group {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-bottom: var(--space-2);
}

.field-label {
  font-size: .6rem;
  font-weight: 500;
  color: var(--color-text-secondary);
  display: flex;
  align-items: center;
  gap: .2rem;
}

.field-unit {
  font-family: var(--font-mono);
  font-size: .5rem;
  color: var(--color-text-muted);
  background: rgba(255, 255, 255, .02);
  padding: .02rem .25rem;
  border: 1px solid var(--color-border);
}

.check-box {
  accent-color: var(--accent-amber);
}

.field-row {
  display: grid;
  gap: var(--space-2);
}

.field-row.cols-2 {
  grid-template-columns: 1fr 1fr;
}

.field-row.cols-3 {
  grid-template-columns: 1fr 1fr 1fr;
}

.field-input,
.field-select {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: .7rem;
  padding: .35rem .5rem;
  outline: none;
  transition: border-color var(--duration-base);
  border-radius: 0;
  -webkit-appearance: none;
}

.field-input:focus,
.field-select:focus {
  border-color: var(--accent-amber);
  background: rgba(255, 159, 10, .03);
}

.field-input.field-warning {
  border-color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.field-input.estimated {
  border-color: var(--accent-steel);
  background: rgba(91, 127, 149, .04);
}

.estimated-badge {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  color: var(--accent-steel);
  background: rgba(91, 127, 149, .1);
  padding: .05rem .3rem;
  margin-left: .2rem;
}

.field-select option {
  background: var(--color-elevated);
}

.field-input[type="number"]::-webkit-inner-spin-button {
  opacity: .4;
}

/* Precision */
.precision-grid {
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 2px;
}

.precision-btn {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 1px;
  padding: .3rem .1rem;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  cursor: pointer;
  font-family: var(--font-body);
  color: var(--color-text-secondary);
  font-size: .55rem;
  font-weight: 600;
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.precision-btn span {
  font-size: .45rem;
  font-weight: 400;
  color: var(--color-text-muted);
}

.precision-btn:hover {
  border-color: var(--accent-amber);
  color: var(--color-text);
  background: rgba(255, 159, 10, .04);
}

.precision-btn.active {
  border-color: var(--accent-amber);
  background: rgba(255, 159, 10, .1);
  color: var(--accent-amber);
}

.precision-btn[data-bits="fp8"]:hover,
.precision-btn[data-bits="fp4"]:hover {
  border-color: var(--accent-phosphor);
  background: rgba(51, 255, 87, .04);
}

.precision-btn[data-bits="fp8"].active,
.precision-btn[data-bits="fp4"].active {
  border-color: var(--accent-phosphor);
  background: rgba(51, 255, 87, .06);
  color: var(--accent-phosphor);
}

/* Mode toggle */
.mode-toggle {
  display: flex;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  padding: 1px;
  gap: 1px;
}

.mode-btn {
  flex: 1;
  padding: .3rem;
  border: none;
  background: none;
  font-family: var(--font-body);
  font-size: .62rem;
  font-weight: 500;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.mode-btn.active {
  background: var(--accent-amber);
  color: #080808;
}

.mode-btn:not(.active):hover {
  color: var(--color-text);
}

/* Buttons */
.btn-calculate {
  width: 100%;
  padding: .5rem;
  margin-top: var(--space-2);
  background: var(--accent-amber);
  border: none;
  color: #080808;
  font-family: var(--font-body);
  font-size: .75rem;
  font-weight: 700;
  cursor: pointer;
  transition: background var(--duration-base), transform var(--duration-base), box-shadow var(--duration-base);
  border-radius: 0;
  letter-spacing: .01em;
}

.btn-calculate:hover {
  background: #FFB833;
  transform: translateY(-1px);
  box-shadow: 0 3px 12px rgba(255, 159, 10, .25);
}

.btn-calculate:active {
  transform: translateY(0);
}

.btn-use-current {
  width: 100%;
  padding: .4rem;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-family: var(--font-body);
  font-size: .65rem;
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base);
  border-radius: 0;
}

.btn-use-current:hover {
  border-color: var(--accent-amber);
  color: var(--color-text);
}

.sys-btns {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  margin-top: var(--space-2);
}

.sys-btns .btn-calculate {
  margin-top: 0;
}

/* ── Results Panel ── */
.results-panel {
  position: relative;
  min-height: 300px;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.loading-overlay {
  position: absolute;
  inset: 0;
  z-index: 10;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: var(--space-3);
  background: rgba(8, 8, 8, .85);
}

.loading-spinner {
  width: 28px;
  height: 28px;
  border: 2px solid var(--color-border);
  border-top-color: var(--accent-amber);
  animation: spin .7s linear infinite;
}

.loading-text {
  font-family: var(--font-mono);
  font-size: .68rem;
  color: var(--color-text-secondary);
}

/* Result cards */
.result-cards {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  gap: var(--space-2);
}

.result-card {
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  background: var(--color-surface);
  cursor: pointer;
  transition: border-color var(--duration-base);
  border-radius: 0;
  position: relative;
}

.result-card::before,
.result-card::after {
  content: '';
  position: absolute;
  z-index: 1;
  pointer-events: none;
  width: 5px;
  height: 5px;
  border-color: var(--color-bracket);
  border-style: solid;
  transition: all var(--duration-base);
}

.result-card::before {
  top: -1px;
  left: -1px;
  border-width: 1px 0 0 1px;
}

.result-card::after {
  bottom: -1px;
  right: -1px;
  border-width: 0 1px 1px 0;
}

.result-card:hover::before,
.result-card:hover::after {
  width: 8px;
  height: 8px;
  border-color: var(--accent-amber);
}

.result-card .card-main {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  width: 100%;
}

.card-icon {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  color: var(--color-text-muted);
  flex-shrink: 0;
  min-width: 32px;
}

.card-body {
  flex: 1;
  min-width: 0;
}

.card-label {
  font-family: var(--font-mono);
  font-size: .48rem;
  color: var(--color-text-muted);
  text-transform: uppercase;
  font-weight: 700;
  letter-spacing: .06em;
  margin-bottom: 1px;
}

.card-value {
  font-family: var(--font-mono);
  font-size: clamp(0.75rem, 2.5vw, 1rem);
  font-weight: 700;
  overflow: hidden;
  text-overflow: ellipsis;
}

.card-sub {
  font-size: .55rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.card-vram .card-value {
  color: var(--accent-amber);
}

.card-ram .card-value {
  color: var(--accent-steel);
}

.card-compute .card-value {
  color: var(--accent-phosphor);
}

.card-bandwidth .card-value {
  color: var(--accent-amber);
}

.result-card.has-value {
  border-color: var(--color-border-active);
}

/* Breakdown */
.breakdown-card {
  padding: var(--space-3);
}

.precision-badge {
  font-family: var(--font-mono);
  font-size: .52rem;
  font-weight: 600;
  background: rgba(255, 159, 10, .08);
  color: var(--accent-amber);
  border: 1px solid rgba(255, 159, 10, .15);
  padding: .05rem .35rem;
  border-radius: 0;
  margin-left: var(--space-2);
}

.breakdown-bars {
  display: flex;
  flex-direction: column;
  gap: .4rem;
  margin-top: var(--space-2);
}

.bar-row {
  display: flex;
  flex-direction: column;
  gap: 1px;
}

.bar-meta {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.bar-label {
  font-size: .62rem;
  color: var(--color-text-secondary);
}

.bar-value {
  font-family: var(--font-mono);
  font-size: .62rem;
  font-weight: 600;
}

.bar-track {
  height: 4px;
  background: var(--color-bg);
  overflow: hidden;
}

.bar-fill {
  position: relative;
  height: 100%;
  transition: width 0.5s var(--ease-out);
}

.bar-fill::after {
  content: '';
  position: absolute;
  inset: 0;
  background: linear-gradient(90deg, transparent, rgb(30 30 30 / 12%));
}

.breakdown-total {
  margin-top: var(--space-2);
  padding-top: var(--space-2);
  border-top: 1px solid var(--color-border);
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.total-label {
  font-size: .65rem;
  color: var(--color-text-secondary);
}

.total-value {
  font-family: var(--font-mono);
  font-size: .9rem;
  font-weight: 700;
}

.total-note {
  font-size: .55rem;
  color: var(--color-text-muted);
  margin-top: 1px;
}

/* GPU recommendations */
.recommendations-card {
  padding: var(--space-3);
}

.rec-filter {
  display: flex;
  gap: 2px;
}

.rec-filter-btn {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  padding: .1rem .4rem;
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.rec-filter-btn.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.rec-filter-btn:not(.active):hover {
  border-color: var(--color-border-active);
}

.gpu-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: var(--space-2);
  max-height: 380px;
  overflow-y: auto;
}

.gpu-item {
  display: flex;
  align-items: center;
  gap: var(--space-2);
  padding: .35rem .5rem;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .01);
  transition: border-color var(--duration-base);
  position: relative;
  border-radius: 0;
}

.gpu-item:hover {
  border-color: var(--color-border-active);
}

.gpu-item.gpu-ok {
  border-color: rgba(51, 255, 87, .2);
}

.gpu-item.gpu-warn {
  border-color: rgba(255, 159, 10, .2);
}

.gpu-item.gpu-no {
  border-color: rgba(255, 69, 58, .08);
  opacity: .5;
}

.gpu-item::before {
  content: '';
  position: absolute;
  left: -1px;
  top: -1px;
  bottom: -1px;
  width: 2px;
}

.gpu-item.gpu-ok::before {
  background: var(--accent-phosphor);
}

.gpu-item.gpu-warn::before {
  background: var(--accent-amber);
}

.gpu-item.gpu-no::before {
  background: var(--accent-red);
}

.gpu-status-icon {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 28px;
}

.gpu-info {
  flex: 1;
}

.gpu-name {
  font-weight: 600;
  font-size: .68rem;
}

.gpu-specs {
  font-family: var(--font-mono);
  font-size: .55rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.gpu-tag {
  font-family: var(--font-mono);
  font-size: .45rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .08rem .3rem;
  border-radius: 0;
}

.tag-consumer {
  background: rgba(255, 159, 10, .1);
  color: var(--accent-amber);
}

.tag-prosumer {
  background: rgba(91, 127, 149, .1);
  color: var(--accent-steel);
}

.tag-datacenter {
  background: rgba(51, 255, 87, .1);
  color: var(--accent-phosphor);
}

.tag-apple {
  background: rgba(51, 255, 87, .1);
  color: var(--accent-phosphor);
}

.gpu-price {
  font-size: .58rem;
  color: var(--color-text-muted);
  text-align: right;
}

/* Multi GPU */
.multigpu-card {
  padding: var(--space-3);
}

.multigpu-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(130px, 1fr));
  gap: 3px;
  margin-top: var(--space-2);
}

.multigpu-item {
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .01);
  text-align: center;
  border-radius: 0;
}

.multigpu-count {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  color: var(--accent-amber);
}

.multigpu-label {
  font-size: .6rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.multigpu-note {
  font-size: .52rem;
  color: var(--color-text-muted);
  margin-top: 1px;
}

/* Formula */
.formula-card {
  padding: var(--space-3);
  display: none;
}

.formula-list {
  display: flex;
  flex-direction: column;
  gap: 2px;
  margin-top: var(--space-2);
  max-height: 240px;
  overflow-y: auto;
}

.formula-item {
  padding: .35rem .5rem;
  background: rgba(255, 255, 255, .01);
  border: 1px solid var(--color-border);
  border-radius: 0;
}

.formula-name {
  font-size: .55rem;
  color: var(--color-text-muted);
  margin-bottom: 1px;
}

.formula-eq {
  font-family: var(--font-mono);
  font-size: .62rem;
  color: var(--accent-amber);
}

/* Empty state */
.empty-state {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  color: var(--color-text-secondary);
  border: 1px dashed var(--color-border);
}

.empty-label {
  font-size: .72rem;
}

.empty-tip {
  display: none;
}

/* ═══════════════════════════════════════════
   MY SYSTEM
   ═══════════════════════════════════════════ */
.my-system-layout {
  display: grid;
  grid-template-columns: 300px 1fr;
  gap: var(--space-3);
  align-items: start;
}

.sys-input-panel {
  padding: var(--space-3) var(--space-4);
}

.sys-results-panel {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.verdict-banner {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  padding: var(--space-3);
  border: 1px solid;
  transition: border-color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.verdict-banner.ok {
  border-color: rgba(51, 255, 87, .25);
  background: rgba(51, 255, 87, .04);
}

.verdict-banner.warn {
  border-color: rgba(255, 159, 10, .25);
  background: rgba(255, 159, 10, .04);
}

.verdict-banner.no {
  border-color: rgba(255, 69, 58, .25);
  background: rgba(255, 69, 58, .04);
}

.verdict-icon {
  font-family: var(--font-mono);
  font-size: 1.2rem;
  font-weight: 700;
  flex-shrink: 0;
  min-width: 40px;
}

.verdict-banner.ok .verdict-icon {
  color: var(--accent-phosphor);
}

.verdict-banner.warn .verdict-icon {
  color: var(--accent-amber);
}

.verdict-banner.no .verdict-icon {
  color: var(--accent-red);
}

.verdict-title {
  font-size: .82rem;
  font-weight: 700;
  margin-bottom: 1px;
}

.verdict-desc {
  font-size: .68rem;
  color: var(--color-text-secondary);
}

.compat-card {
  padding: var(--space-3);
}

.compat-table-wrap {
  margin-top: var(--space-2);
  overflow-x: auto;
}

.compat-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .65rem;
}

.compat-table th {
  padding: .3rem .5rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
}

.compat-table td {
  padding: .4rem .5rem;
  border-bottom: 1px solid rgba(255, 255, 255, .02);
}

.compat-table tbody tr:last-child td {
  border-bottom: none;
}

.compat-table tbody tr:hover td {
  background: rgba(255, 255, 255, .015);
}

.compat-status {
  font-weight: 700;
}

.compat-ok {
  color: var(--accent-phosphor);
}

.compat-warn {
  color: var(--accent-amber);
}

.compat-no {
  color: var(--accent-red);
}

.compat-vram {
  font-family: var(--font-mono);
  font-size: .62rem;
}

.compat-note {
  font-size: .58rem;
  color: var(--color-text-secondary);
}

.perf-card {
  padding: var(--space-3);
}

.perf-note {
  font-family: var(--font-mono);
  font-size: .5rem;
  color: var(--color-text-muted);
}

.perf-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(120px, 1fr));
  gap: 3px;
  margin-top: var(--space-2);
}

.perf-item {
  padding: var(--space-2);
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .01);
  text-align: center;
  border-radius: 0;
}

.perf-precision {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.perf-value {
  font-family: var(--font-mono);
  font-size: .85rem;
  font-weight: 700;
}

.perf-unit {
  font-size: .52rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.perf-item.ok .perf-value {
  color: var(--accent-phosphor);
}

.perf-item.warn .perf-value {
  color: var(--accent-amber);
}

.perf-item.no .perf-value {
  color: var(--accent-red);
}

.tips-card {
  padding: var(--space-3);
}

.tips-list {
  display: flex;
  flex-direction: column;
  gap: 3px;
  margin-top: var(--space-2);
}

.tip-item {
  display: flex;
  gap: var(--space-2);
  padding: .4rem .5rem;
  background: rgba(255, 255, 255, .01);
  border: 1px solid var(--color-border);
  border-radius: 0;
}

.tip-icon {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  color: var(--accent-amber);
  flex-shrink: 0;
  min-width: 20px;
}

.tip-text {
  font-size: .62rem;
  color: var(--color-text-secondary);
}

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

/* ═══════════════════════════════════════════
   GPU REFERENCE TABLE
   ═══════════════════════════════════════════ */
.ref-filters {
  display: flex;
  align-items: center;
  gap: 3px;
  margin-bottom: var(--space-2);
}

.ref-filter-btn {
  font-family: var(--font-mono);
  font-size: .55rem;
  font-weight: 600;
  padding: .2rem .5rem;
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.ref-filter-btn.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.ref-filter-btn:not(.active):hover {
  border-color: var(--color-border-active);
}

.gpu-search-input {
  margin-left: auto;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: .62rem;
  padding: .25rem .5rem;
  outline: none;
  width: 160px;
  transition: border-color var(--duration-base);
  border-radius: 0;
}

.gpu-search-input:focus {
  border-color: var(--accent-amber);
}

.gpu-search-input::placeholder {
  color: var(--color-text-muted);
}

.table-wrapper {
  padding: 0;
  overflow-x: auto;
  border-radius: 0;
}

.ref-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .65rem;
}

.ref-table th {
  padding: .35rem .6rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .01);
}

.ref-table td {
  padding: .35rem .6rem;
  border-bottom: 1px solid rgba(255, 255, 255, .02);
  color: var(--color-text-secondary);
  white-space: nowrap;
}

.ref-table tbody tr:hover td {
  background: rgba(255, 159, 10, .02);
}

.ref-table tbody tr:last-child td {
  border-bottom: none;
}

.ref-table .gpu-name-cell {
  color: var(--color-text);
  font-weight: 500;
}

.tier-pill {
  font-family: var(--font-mono);
  font-size: .48rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  padding: .08rem .35rem;
  display: inline-block;
  border-radius: 0;
}

/* ═══════════════════════════════════════════
   MODEL CONFIG PAGE
   ═══════════════════════════════════════════ */
.config-empty-state {
  text-align: center;
  padding: var(--space-6) var(--space-4);
  border: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-2);
  color: var(--color-text-secondary);
}

.config-empty-icon {
  font-family: var(--font-mono);
  font-size: 3rem;
  font-weight: 700;
  color: var(--color-text-muted);
  opacity: .4;
  line-height: 1;
}

.config-empty-title {
  font-weight: 600;
  font-size: .78rem;
  color: var(--color-text);
}

.config-empty-desc {
  font-size: .65rem;
  color: var(--color-text-muted);
  max-width: 400px;
}

.config-viewer-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: var(--space-2);
  gap: var(--space-3);
  flex-wrap: wrap;
}

.config-viewer-model-info {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.config-viewer-name {
  font-weight: 600;
  font-size: .78rem;
  color: var(--color-text);
}

.config-viewer-badge {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 700;
  padding: .12rem .4rem;
}

.config-badge-hf {
  background: rgba(255, 159, 10, .1);
  color: var(--accent-amber);
}

.config-badge-or {
  background: rgba(91, 127, 149, .12);
  color: var(--accent-steel);
}

.config-viewer-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.config-search-input {
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: .62rem;
  padding: .25rem .5rem;
  outline: none;
  width: 220px;
  transition: border-color var(--duration-base);
  border-radius: 0;
}

.config-search-input:focus {
  border-color: var(--accent-amber);
}

.config-search-input::placeholder {
  color: var(--color-text-muted);
}

.config-copy-btn {
  font-family: var(--font-mono);
  font-size: .55rem;
  font-weight: 600;
  color: var(--color-text-muted);
  background: none;
  border: 1px solid var(--color-border);
  padding: .25rem .5rem;
  cursor: pointer;
  transition: color var(--duration-base), border-color var(--duration-base);
  border-radius: 0;
}

.config-copy-btn:hover {
  color: var(--accent-amber);
  border-color: var(--accent-amber);
}

.config-stats-bar {
  font-size: 0.78rem;
  color: var(--color-text-dim, var(--color-text-muted));
  margin-bottom: var(--space-2);
  font-family: var(--font-mono);
}

/* ── Config Table ── */
.config-table-wrap {
  padding: 0;
  overflow-x: auto;
  border-radius: 0;
}

.config-table {
  width: 100%;
  border-collapse: collapse;
  font-size: .65rem;
}

.config-table thead {
  position: sticky;
  top: 0;
  z-index: 2;
}

.config-table th {
  padding: .35rem .6rem;
  text-align: left;
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: .07em;
  color: var(--color-text-muted);
  border-bottom: 1px solid var(--color-border);
  background: var(--color-surface);
}

.config-table td {
  padding: .35rem .6rem;
  border-bottom: 1px solid rgba(255, 255, 255, .02);
  color: var(--color-text-secondary);
  vertical-align: middle;
}

.config-table tbody tr:last-child td {
  border-bottom: none;
}

.config-table tbody tr:nth-child(even) td {
  background: rgba(255, 255, 255, .012);
}

.config-table tbody tr:hover td {
  background: rgba(255, 255, 255, .04);
}

.config-table th:nth-child(1),
.config-key-cell {
  width: 38%;
  font-family: var(--font-mono);
  color: var(--accent-amber);
  font-size: .62rem;
}

.config-table th:nth-child(2),
.config-value-cell {
  width: 44%;
  font-family: var(--font-mono);
  font-size: .62rem;
  word-break: break-all;
  max-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
}

.config-table th:nth-child(3),
.config-type-cell {
  width: 18%;
  text-align: center;
}

.config-table mark {
  background: hsla(45, 100%, 50%, .25);
  color: var(--color-text);
  padding: 0 .1rem;
}

.config-null {
  color: var(--color-text-muted);
  font-style: italic;
  opacity: .6;
}

.config-bool {
  font-family: var(--font-mono);
  font-size: .52rem;
  font-weight: 700;
  padding: .06rem .35rem;
  display: inline-block;
}

.config-bool-true {
  background: rgba(51, 255, 87, .08);
  color: var(--accent-phosphor);
  border: 1px solid rgba(51, 255, 87, .15);
}

.config-bool-false {
  background: rgba(255, 69, 58, .06);
  color: var(--accent-red);
  border: 1px solid rgba(255, 69, 58, .12);
}

.config-type-badge {
  font-family: var(--font-mono);
  font-size: .46rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .05em;
  padding: .06rem .35rem;
  display: inline-block;
}

.type-number {
  background: rgba(59, 130, 246, .1);
  color: #3b82f6;
}

.type-string {
  background: rgba(51, 255, 87, .08);
  color: var(--accent-phosphor);
}

.type-boolean {
  background: rgba(255, 159, 10, .08);
  color: var(--accent-amber);
}

.type-null {
  background: rgba(107, 114, 128, .1);
  color: #6b7280;
}

.type-array {
  background: rgba(139, 92, 246, .1);
  color: #8b5cf6;
}

.type-object {
  background: rgba(6, 182, 212, .1);
  color: #06b6d4;
}

/* ═══════════════════════════════════════════
   MODEL CONFIG SLIDE-OVER PANEL
   ═══════════════════════════════════════════ */
.config-overlay {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(0, 0, 0, .7);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.config-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.config-panel {
  position: fixed;
  top: 0;
  right: -550px;
  bottom: 0;
  z-index: 900;
  width: 520px;
  max-width: 95vw;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -16px 0 64px rgba(0, 0, 0, .8);
  display: flex;
  flex-direction: column;
  transition: right .28s var(--ease-out);
}

.config-panel.open {
  right: 0;
}

.config-panel-header {
  padding: var(--space-4) var(--space-4) var(--space-3);
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
}

.config-panel-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--accent-amber);
  margin-bottom: 2px;
}

.config-panel-subtitle {
  font-size: .62rem;
  color: var(--color-text-secondary);
}

.config-panel-header-actions {
  display: flex;
  align-items: center;
  gap: var(--space-2);
}

.config-panel-expand {
  width: 24px;
  height: 24px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: .7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-base), border-color var(--duration-base), color var(--duration-base);
  border-radius: 0;
}

.config-panel-expand:hover {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.config-panel-close {
  width: 24px;
  height: 24px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: .7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-base), border-color var(--duration-base), color var(--duration-base);
  border-radius: 0;
}

.config-panel-close:hover {
  background: rgba(255, 69, 58, .1);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.config-panel-search {
  padding: .4rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.config-panel-search-input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-mono);
  font-size: .62rem;
  padding: .3rem .5rem;
  outline: none;
  transition: border-color var(--duration-base);
  border-radius: 0;
}

.config-panel-search-input:focus {
  border-color: var(--accent-amber);
}

.config-panel-search-input::placeholder {
  color: var(--color-text-muted);
}

.config-panel-stats {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  padding: .2rem var(--space-4);
  font-family: var(--font-mono);
  flex-shrink: 0;
}

.config-panel-body {
  flex: 1;
  overflow-y: auto;
  padding: 0 var(--space-4) var(--space-4);
}

.config-panel-body::-webkit-scrollbar {
  width: 3px;
}

.config-panel-body::-webkit-scrollbar-thumb {
  background: var(--color-border-active);
  border-radius: 0;
}

.config-panel-body .config-table {
  font-size: .6rem;
}

.config-panel-body .config-table th,
.config-panel-body .config-table td {
  padding: .28rem .4rem;
}

/* ── Footer ── */
.footer {
  text-align: center;
  padding: var(--space-4) var(--space-4) calc(var(--space-4) * 1.2);
  border-top: 1px solid var(--color-border);
  color: var(--color-text-muted);
  font-size: .58rem;
  margin-top: var(--space-6);
}

.footer-main {
  letter-spacing: 0.02em;
  margin-bottom: 0.65rem;
  opacity: 0.6;
}

/* ── Developer credit row ── */
.footer-dev {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.75rem;
}

.footer-dev-by {
  font-size: 0.6rem;
  color: var(--color-text-muted);
  letter-spacing: 0.04em;
  text-transform: lowercase;
}

.footer-dev-by strong {
  color: var(--accent-amber);
  font-weight: 200;
}

/* ── Icon row ── */
.footer-icons {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

/* ── Individual icon button ── */
.footer-icon-link {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
  width: 26px;
  height: 26px;
  border-radius: 6px;
  color: var(--color-text-muted);
  border: 1px solid transparent;
  text-decoration: none;
  transition:
    color var(--duration-base) var(--ease-out),
    border-color var(--duration-base) var(--ease-out),
    background var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out),
    box-shadow var(--duration-base) var(--ease-out);
}

.footer-icon-link svg {
  width: 13px;
  height: 13px;
  display: block;
  transition: transform var(--duration-base) var(--ease-out);
}

.footer-icon-link:hover {
  color: var(--accent-amber);
  border-color: rgba(255, 159, 10, 0.3);
  background: rgba(255, 159, 10, 0.06);
  box-shadow: 0 0 8px rgba(255, 159, 10, 0.18);
  transform: translateY(-1px);
}

.footer-icon-link:hover svg {
  transform: scale(1.1);
}

/* ── Tooltip ── */
.footer-icon-tooltip {
  position: absolute;
  bottom: calc(100% + 7px);
  left: 50%;
  transform: translateX(-50%) translateY(3px);
  background: var(--color-elevated);
  border: 1px solid var(--color-border-active);
  color: var(--color-text);
  font-size: 0.55rem;
  font-family: var(--font-mono);
  letter-spacing: 0.04em;
  padding: 3px 7px;
  border-radius: 4px;
  white-space: nowrap;
  pointer-events: none;
  opacity: 0;
  transition:
    opacity var(--duration-base) var(--ease-out),
    transform var(--duration-base) var(--ease-out);
  z-index: 10;
}

.footer-icon-tooltip::after {
  content: '';
  position: absolute;
  top: 100%;
  left: 50%;
  transform: translateX(-50%);
  border: 4px solid transparent;
  border-top-color: var(--color-border-active);
}

.footer-icon-link:hover .footer-icon-tooltip {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* ── Separator dot ── */
.footer-dev::before {
  /* content: '';
  display: block;
  width: 3px;
  height: 3px;
  border-radius: 50%;
  background: var(--color-border-active); */
}


/* ═══════════════════════════════════════════
   ANIMATIONS
   ═══════════════════════════════════════════ */
@keyframes fadeInUp {
  from {
    opacity: 0;
    transform: translateY(8px);
  }

  to {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-in {
  animation: fadeInUp .3s var(--ease-out) both;
}

@keyframes pulse-glow {

  0%,
  100% {
    box-shadow: 0 0 0 0 rgba(255, 159, 10, 0);
  }

  50% {
    box-shadow: 0 0 16px 2px rgba(255, 159, 10, .12);
  }
}

.pulse-once {
  animation: pulse-glow .5s var(--ease-out);
}

@keyframes shimmer {
  0% {
    background-position: -200% 0;
  }

  100% {
    background-position: 200% 0;
  }
}

.skeleton {
  background: linear-gradient(90deg, rgba(255, 255, 255, .02) 25%, rgba(255, 255, 255, .05) 50%, rgba(255, 255, 255, .02) 75%);
  background-size: 200% 100%;
  animation: shimmer 1.5s infinite;
  height: 12px;
  border-radius: 0;
}

@keyframes shake {

  0%,
  100% {
    transform: translateX(0);
  }

  10%,
  30%,
  50%,
  70%,
  90% {
    transform: translateX(-3px);
  }

  20%,
  40%,
  60%,
  80% {
    transform: translateX(3px);
  }
}

.field-input.shake {
  animation: shake 0.4s var(--ease-out);
  border-color: var(--accent-red) !important;
}

/* ═══════════════════════════════════════════
   EDUCATIONAL UI
   ═══════════════════════════════════════════ */
.info-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 12px;
  height: 12px;
  background: rgba(255, 159, 10, .12);
  border: 1px solid rgba(255, 159, 10, .25);
  color: var(--accent-amber);
  font-size: .42rem;
  font-weight: 700;
  cursor: pointer;
  flex-shrink: 0;
  margin-left: .25rem;
  font-family: var(--font-mono);
  line-height: 1;
  transition: background var(--duration-base), color var(--duration-base), transform var(--duration-base);
  vertical-align: middle;
  border-radius: 0;
}

.info-btn:hover {
  background: rgba(255, 159, 10, .25);
  color: #080808;
  transform: scale(1.15);
}

.edu-popover {
  position: fixed;
  z-index: 9999;
  max-width: min(340px, calc(100vw - 24px));
  width: 340px;
  max-height: calc(100vh - 24px);
  overflow-y: auto;
  overscroll-behavior: contain;
  background: var(--color-elevated);
  border: 1px solid rgba(255, 159, 10, .25);
  box-shadow: 0 16px 48px rgba(0, 0, 0, .85);
  pointer-events: none;
  opacity: 0;
  transform: translateY(4px);
  transition: opacity .15s var(--ease-out), transform .15s var(--ease-out);
  font-family: var(--font-body);
  border-radius: 0;
  scrollbar-width: thin;
  scrollbar-color: var(--color-border-active) transparent;
}

.edu-popover.visible {
  opacity: 1;
  transform: translateY(0);
  pointer-events: auto;
}

.pop-header {
  padding: .5rem .6rem .35rem;
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: flex-start;
  gap: .35rem;
}

.pop-emoji {
  font-size: 1.1rem;
  flex-shrink: 0;
}

.pop-title {
  font-size: .72rem;
  font-weight: 700;
  color: var(--color-text);
}

.pop-tag {
  display: inline-block;
  font-family: var(--font-mono);
  font-size: .55rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .07em;
  padding: .06rem .3rem;
  margin-top: 2px;
  background: rgba(255, 159, 10, .1);
  color: var(--accent-amber);
  border-radius: 0;
}

.pop-body {
  padding: .45rem .6rem;
  display: flex;
  flex-direction: column;
  gap: .4rem;
  max-height: 420px;
  overflow-y: auto;
}

.pop-plain {
  font-size: .62rem;
  color: var(--color-text-secondary);
  line-height: 1.55;
}

.pop-plain strong {
  color: var(--color-text);
}

.pop-analogy {
  display: flex;
  gap: .3rem;
  background: rgba(255, 159, 10, .04);
  border: 1px solid rgba(255, 159, 10, .1);
  padding: .35rem .45rem;
  font-size: .62rem;
  color: var(--accent-amber);
  line-height: 1.45;
  border-radius: 0;
}

.pop-analogy-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.pop-formula {
  font-family: var(--font-mono);
  font-size: .58rem;
  background: rgba(255, 255, 255, .02);
  border: 1px solid var(--color-border);
  padding: .35rem .45rem;
  color: var(--accent-amber);
  white-space: pre-wrap;
  border-radius: 0;
}

.pop-tip {
  display: flex;
  gap: .3rem;
  font-size: .6rem;
  color: var(--accent-amber);
}

/* Deep-dive popover extras */
#pop-extra {
  display: flex;
  flex-direction: column;
  gap: .35rem;
}

.pop-blocks {
  display: flex;
  flex-direction: column;
  gap: 3px;
}

.pop-block {
  padding: .35rem .45rem;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .015);
  border-radius: 0;
}

.pop-block-label {
  font-family: var(--font-mono);
  font-size: .45rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .06em;
  color: var(--color-text-muted);
  margin-bottom: 2px;
}

.pop-block-text {
  font-size: .58rem;
  color: var(--color-text-secondary);
  line-height: 1.4;
}

.pop-block-text strong {
  color: var(--color-text);
}

.pop-rules {
  display: flex;
  flex-wrap: wrap;
  gap: 2px;
  margin-top: 2px;
}

.pop-rule {
  font-family: var(--font-mono);
  font-size: .58rem;
  padding: .12rem .3rem;
  background: rgba(255, 159, 10, .06);
  border: 1px solid rgba(255, 159, 10, .12);
  color: var(--accent-amber);
  border-radius: 0;
}

.pop-arrow {
  position: absolute;
  width: 7px;
  height: 7px;
  background: var(--color-elevated);
  border: 1px solid rgba(255, 159, 10, .25);
  transform: rotate(45deg);
  left: 14px;
}

.pop-arrow.below-arrow {
  top: -4px;
  border-bottom: none;
  border-right: none;
}

.pop-arrow.above-arrow {
  bottom: -4px;
  border-top: none;
  border-left: none;
}

/* Result card deep-dive (hidden - now uses popover) */
.result-card .card-expand-hint {
  font-family: var(--font-mono);
  font-size: .44rem;
  color: var(--color-text-muted);
  margin-top: .2rem;
  text-transform: uppercase;
  letter-spacing: .05em;
  transition: color var(--duration-base);
  cursor: pointer;
}

.result-card:hover .card-expand-hint {
  color: var(--accent-amber);
}

.card-deepdive {
  display: none !important;
}

/* Knowledge panel */
.knowledge-overlay {
  position: fixed;
  inset: 0;
  z-index: 800;
  background: rgba(0, 0, 0, .7);
  opacity: 0;
  pointer-events: none;
  transition: opacity .2s;
}

.knowledge-overlay.open {
  opacity: 1;
  pointer-events: auto;
}

.knowledge-panel {
  position: fixed;
  top: 0;
  right: -460px;
  bottom: 0;
  z-index: 900;
  width: 420px;
  max-width: 95vw;
  background: var(--color-surface);
  border-left: 1px solid var(--color-border);
  box-shadow: -16px 0 64px rgba(0, 0, 0, .8);
  display: flex;
  flex-direction: column;
  transition: right .28s var(--ease-out);
}

.knowledge-panel.open {
  right: 0;
}

.kp-header {
  padding: var(--space-4) var(--space-4) var(--space-3);
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
  position: relative;
}

.kp-title {
  font-size: .9rem;
  font-weight: 700;
  color: var(--accent-amber);
  margin-bottom: 2px;
}

.kp-subtitle {
  font-size: .62rem;
  color: var(--color-text-secondary);
}

.kp-close {
  position: absolute;
  top: .75rem;
  right: .75rem;
  width: 24px;
  height: 24px;
  background: none;
  border: 1px solid var(--color-border);
  color: var(--color-text-secondary);
  font-size: .7rem;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: background var(--duration-base), border-color var(--duration-base), color var(--duration-base);
  border-radius: 0;
}

.kp-close:hover {
  background: rgba(255, 69, 58, .1);
  border-color: var(--accent-red);
  color: var(--accent-red);
}

.kp-search {
  padding: .4rem var(--space-4);
  border-bottom: 1px solid var(--color-border);
  flex-shrink: 0;
}

.kp-search-input {
  width: 100%;
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text);
  font-family: var(--font-body);
  font-size: .65rem;
  padding: .3rem .5rem;
  outline: none;
  transition: border-color var(--duration-base);
  border-radius: 0;
}

.kp-search-input:focus {
  border-color: var(--accent-amber);
}

.kp-search-input::placeholder {
  color: var(--color-text-muted);
}

.kp-tabs {
  display: flex;
  padding: .3rem var(--space-4) .15rem;
  gap: 2px;
  flex-shrink: 0;
  border-bottom: 1px solid var(--color-border);
}

.kp-tab {
  font-family: var(--font-mono);
  font-size: .5rem;
  font-weight: 600;
  padding: .18rem .45rem;
  border: 1px solid var(--color-border);
  background: none;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: border-color var(--duration-base), color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.kp-tab.active {
  border-color: var(--accent-amber);
  color: var(--accent-amber);
  background: rgba(255, 159, 10, .06);
}

.kp-tab:not(.active):hover {
  border-color: var(--color-border-active);
  color: var(--color-text);
}

.kp-body {
  flex: 1;
  overflow-y: auto;
  padding: var(--space-3) var(--space-4);
}

.kp-body::-webkit-scrollbar {
  width: 3px;
}

.kp-body::-webkit-scrollbar-thumb {
  background: var(--color-border-active);
  border-radius: 0;
}

.kp-section {
  margin-bottom: var(--space-3);
}

.kp-section-label {
  font-family: var(--font-mono);
  font-size: .45rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: .09em;
  color: var(--color-text-muted);
  margin-bottom: .25rem;
  padding-bottom: .2rem;
  border-bottom: 1px solid var(--color-border);
}

.kp-concept {
  padding: .5rem;
  margin-bottom: 3px;
  border: 1px solid var(--color-border);
  background: rgba(255, 255, 255, .01);
  cursor: pointer;
  transition: border-color var(--duration-base), background var(--duration-base);
  border-radius: 0;
}

.kp-concept:hover {
  border-color: var(--accent-amber);
  background: rgba(255, 159, 10, .03);
}

.kp-concept.kp-open {
  border-color: rgba(255, 159, 10, .25);
  background: rgba(255, 159, 10, .04);
}

.kp-concept-header {
  display: flex;
  align-items: center;
  gap: .4rem;
}

.kp-concept-icon {
  font-size: 0.9rem;
  flex-shrink: 0;
}

.kp-concept-name {
  font-weight: 600;
  font-size: .68rem;
}

.kp-concept-brief {
  font-size: .58rem;
  color: var(--color-text-secondary);
  margin-top: 1px;
}

.kp-concept-chevron {
  margin-left: auto;
  color: var(--color-text-muted);
  font-size: .55rem;
  transition: transform var(--duration-base);
}

.kp-concept.kp-open .kp-concept-chevron {
  transform: rotate(180deg);
}

.kp-concept-body {
  display: none;
  margin-top: .4rem;
  padding-top: .4rem;
  border-top: 1px solid var(--color-border);
}

.kp-concept.kp-open .kp-concept-body {
  display: block;
}

.kp-concept-text {
  font-size: .62rem;
  color: var(--color-text-secondary);
  line-height: 1.5;
  margin-bottom: .3rem;
}

.kp-concept-text strong {
  color: var(--color-text);
}

.kp-analogy-box {
  background: rgba(255, 159, 10, .04);
  border: 1px solid rgba(255, 159, 10, .08);
  padding: .3rem .45rem;
  margin-bottom: .3rem;
  font-size: .6rem;
  color: var(--accent-amber);
  border-radius: 0;
}

.kp-formula-box {
  font-family: var(--font-mono);
  font-size: .55rem;
  background: rgba(255, 255, 255, .02);
  border: 1px solid var(--color-border);
  padding: .3rem .45rem;
  color: var(--accent-amber);
  margin-bottom: .2rem;
  border-radius: 0;
  white-space: pre-wrap;
}

.kp-thumbrule {
  font-size: .58rem;
  color: var(--accent-amber);
  margin-top: .25rem;
}

.kp-thumbrule::before {
  content: 'TIP  ';
}

.kp-open-btn {
  position: fixed;
  bottom: var(--space-4);
  right: var(--space-4);
  z-index: 500;
  display: flex;
  align-items: center;
  gap: .3rem;
  padding: .45rem .8rem;
  background: var(--accent-amber);
  border: none;
  color: #080808;
  font-family: var(--font-mono);
  font-size: .58rem;
  font-weight: 700;
  cursor: pointer;
  box-shadow: 0 3px 16px rgba(255, 159, 10, .25);
  transition: transform var(--duration-base), box-shadow var(--duration-base);
  border-radius: 0;
}

.kp-open-btn:hover {
  transform: translateY(-1px);
  box-shadow: 0 5px 20px rgba(255, 159, 10, .35);
}

/* Precision guide strip */
.precision-guide {
  margin-top: 3px;
  display: grid;
  grid-template-columns: repeat(8, 1fr);
  gap: 1px;
  max-height: 0;
  overflow: hidden;
  opacity: 0;
  transition: max-height .25s var(--ease-out), opacity .2s;
}

.precision-guide.visible {
  max-height: 60px;
  opacity: 1;
}

.prec-guide-cell {
  text-align: center;
  font-size: .42rem;
  padding: .18rem .05rem;
  border-top: 2px solid;
  line-height: 1.2;
  color: var(--color-text-muted);
  border-radius: 0;
}

.prec-guide-cell .pg-bytes {
  font-family: var(--font-mono);
  font-weight: 700;
  display: block;
  font-size: .48rem;
}

.prec-guide-cell .pg-use {
  display: block;
  margin-top: 1px;
}

/* Section intro cards */
.section-intro {
  display: none;
}

/* ═══════════════════════════════════════════
   RESPONSIVE
   ═══════════════════════════════════════════ */
@media (max-width:1100px) {
  .sidebar {
    width: 120px;
  }

  .sidebar-link {
    font-size: .6rem;
    padding: .25rem .35rem;
  }

  .main-area {
    margin-left: 120px;
  }

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

  .my-system-layout {
    grid-template-columns: 1fr;
  }

  .precision-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

@media (max-width:768px) {
  .sidebar {
    position: fixed;
    bottom: 0;
    top: auto;
    left: 0;
    right: 0;
    width: 100%;
    height: 48px;
    padding-bottom: env(safe-area-inset-bottom, 0);
    flex-direction: row;
    align-items: center;
    padding: 0 0 env(safe-area-inset-bottom, 0) 0;
    z-index: 200;
    border-right: none;
    border-top: 1px solid var(--color-border);
  }

  .sidebar-brand {
    font-size: .75rem;
    display: none;
  }

  .sidebar-ver,
  .sidebar-tagline,
  .sidebar-api {
    display: none;
  }

  .sidebar-nav {
    flex-direction: row;
    gap: var(--space-3);
    flex: 1;
    justify-content: center;
  }

  .sidebar-link {
    border-left: none;
    border-bottom: 1px solid transparent;
    font-size: .58rem;
    padding: .15rem .25rem;
  }

  .sidebar-link.active {
    border-bottom-color: var(--accent-amber);
    border-left-color: transparent;
  }

  .main-area {
    margin-left: 0;
    margin-bottom: 48px;
  }

  .kp-open-btn {
    bottom: calc(48px + var(--space-4) + env(safe-area-inset-bottom, 0));
  }

  .top-bar {
    flex-wrap: wrap;
    gap: var(--space-1);
  }

  .search-chips {
    display: flex;
    overflow-x: auto;
    flex-wrap: nowrap;
    -webkit-overflow-scrolling: touch;
    position: relative;
  }

  .search-chips::after {
    content: '';
    position: sticky;
    right: 0;
    min-width: 24px;
    background: linear-gradient(to right, transparent, var(--color-bg));
    pointer-events: none;
    flex-shrink: 0;
  }

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

  .my-system-layout {
    grid-template-columns: 1fr;
  }

  .precision-grid {
    grid-template-columns: repeat(4, 1fr);
  }

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

  .knowledge-panel {
    width: 100%;
  }

  .config-panel {
    width: 100%;
  }

  .config-viewer-header {
    flex-direction: column;
    align-items: flex-start;
  }

  .config-search-input {
    width: 140px;
  }

  .config-table .config-type-cell,
  .config-table th:nth-child(3) {
    display: none;
  }

  .config-panel-body .config-table .config-type-cell,
  .config-panel-body .config-table th:nth-child(3) {
    display: none;
  }
}