/* ============================================================
   TETRA HEAT PUMP SELECTOR — Design System
   ============================================================ */
@import url('https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700;800&display=swap');

:root {
  --brand-900: #0A1628;
  --brand-800: #0F2240;
  --brand-700: #153058;
  --brand-600: #1B3F70;
  --brand-500: #1E4D8C;
  --brand-400: #2B6CB0;
  --brand-300: #4A90D9;
  --brand-200: #90C0F0;
  --brand-100: #D0E4F7;
  --brand-50:  #EBF4FC;
  --accent-600: #008C9E;
  --accent-500: #00A3BF;
  --accent-400: #22C1D6;
  --accent-100: #D4F4FA;
  --success-600: #16794A;
  --success-500: #1E9E5E;
  --success-100: #D6F5E4;
  --warning-600: #A16207;
  --warning-500: #CA8A04;
  --warning-100: #FEF3C7;
  --danger-600: #B91C1C;
  --danger-500: #DC2626;
  --danger-100: #FEE2E2;
  --gray-950: #0C0E12;
  --gray-900: #171B22;
  --gray-800: #2A2F3A;
  --gray-700: #3D4451;
  --gray-600: #545C6B;
  --gray-500: #6E7889;
  --gray-400: #9CA3B0;
  --gray-300: #C4C9D4;
  --gray-200: #E2E5EB;
  --gray-100: #F0F2F5;
  --gray-50:  #F8F9FB;
  --white:    #FFFFFF;
  --font: 'Inter', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --text-xs:  0.75rem;
  --text-sm:  0.8125rem;
  --text-base: 0.875rem;
  --text-md:  1rem;
  --text-lg:  1.125rem;
  --text-xl:  1.25rem;
  --text-2xl: 1.5rem;
  --text-3xl: 1.875rem;
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;
  --shadow-xs: 0 1px 2px rgba(10,22,40,0.04);
  --shadow-sm: 0 1px 3px rgba(10,22,40,0.06), 0 1px 2px rgba(10,22,40,0.04);
  --shadow-md: 0 4px 6px rgba(10,22,40,0.06), 0 2px 4px rgba(10,22,40,0.04);
  --shadow-lg: 0 10px 15px rgba(10,22,40,0.06), 0 4px 6px rgba(10,22,40,0.03);
  --shadow-xl: 0 20px 25px rgba(10,22,40,0.08), 0 8px 10px rgba(10,22,40,0.03);
  --ease: cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }
html { font-size: 16px; -webkit-font-smoothing: antialiased; -moz-osx-font-smoothing: grayscale; }
body { font-family: var(--font); font-size: var(--text-base); line-height: 1.6; color: var(--gray-800); background: var(--gray-50); min-height: 100vh; }
a { color: var(--brand-500); text-decoration: none; transition: color 150ms var(--ease); }
a:hover { color: var(--brand-400); }
img { max-width: 100%; display: block; }

/* Topbar */
.topbar { position: sticky; top: 0; z-index: 100; background: var(--brand-900); border-bottom: 1px solid rgba(255,255,255,0.06); padding: 0 1.5rem; height: 3.5rem; display: flex; align-items: center; justify-content: space-between; flex-shrink: 0; }
.topbar-brand { display: flex; align-items: center; gap: 0.75rem; color: var(--white); font-weight: 700; font-size: var(--text-md); letter-spacing: -0.01em; }
.topbar-brand svg { width: 1.5rem; height: 1.5rem; color: var(--accent-400); }
.topbar-nav { display: flex; align-items: center; gap: 0.25rem; }
.topbar-link { color: var(--gray-400); font-size: var(--text-sm); font-weight: 500; padding: 0.5rem 0.75rem; border-radius: var(--radius-md); transition: all 150ms var(--ease); }
.topbar-link:hover { color: var(--white); background: rgba(255,255,255,0.06); }
.topbar-link.active { color: var(--white); background: rgba(255,255,255,0.1); }
.topbar-right { display: flex; align-items: center; gap: 1rem; }
.topbar-user { color: var(--gray-400); font-size: var(--text-sm); }
.topbar-user strong { color: var(--gray-200); font-weight: 500; }
.topbar-btn { display: inline-flex; align-items: center; gap: 0.5rem; color: var(--gray-300); font-size: var(--text-sm); font-weight: 500; padding: 0.375rem 0.75rem; border-radius: var(--radius-md); border: 1px solid rgba(255,255,255,0.12); background: transparent; cursor: pointer; transition: all 150ms var(--ease); text-decoration: none; font-family: var(--font); }
.topbar-btn:hover { background: rgba(255,255,255,0.08); color: var(--white); border-color: rgba(255,255,255,0.2); }

/* Page */
.page-container { max-width: 72rem; margin: 0 auto; padding: 2rem 1.5rem; width: 100%; flex: 1; }
.page-container--narrow { max-width: 52rem; }
.page-container--wide { max-width: 82rem; }
.page-header { margin-bottom: 2rem; }
.page-header h1 { font-size: var(--text-2xl); font-weight: 700; color: var(--gray-900); letter-spacing: -0.02em; line-height: 1.3; }
.page-header p { color: var(--gray-500); font-size: var(--text-base); margin-top: 0.25rem; }
.page-actions { display: flex; gap: 0.5rem; margin-top: 1rem; }

/* Card */
.card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius-lg); box-shadow: var(--shadow-sm); }
.card-body { padding: 1.5rem; }
.card-header { padding: 1.25rem 1.5rem; border-bottom: 1px solid var(--gray-100); display: flex; align-items: center; justify-content: space-between; }
.card-header h2, .card-header h3 { font-size: var(--text-md); font-weight: 600; color: var(--gray-900); }
.card-footer { padding: 1rem 1.5rem; border-top: 1px solid var(--gray-100); background: var(--gray-50); border-radius: 0 0 var(--radius-lg) var(--radius-lg); }

/* Form */
.form-group { margin-bottom: 1.25rem; }
.form-label { display: block; font-size: var(--text-sm); font-weight: 600; color: var(--gray-700); margin-bottom: 0.5rem; letter-spacing: 0.01em; }
.form-label svg { display: inline-block; width: 0.875rem; height: 0.875rem; vertical-align: -2px; margin-right: 0.25rem; color: var(--gray-400); }
.form-input, .form-select, .form-textarea { width: 100%; padding: 0.625rem 0.875rem; font-family: var(--font); font-size: var(--text-base); color: var(--gray-800); background: var(--white); border: 1px solid var(--gray-300); border-radius: var(--radius-md); transition: border-color 150ms var(--ease), box-shadow 150ms var(--ease); outline: none; }
.form-input:hover, .form-select:hover, .form-textarea:hover { border-color: var(--gray-400); }
.form-input:focus, .form-select:focus, .form-textarea:focus { border-color: var(--brand-400); box-shadow: 0 0 0 3px rgba(43,108,176,0.12); }
.form-input::placeholder { color: var(--gray-400); }
.form-hint { display: block; font-size: var(--text-xs); color: var(--gray-500); margin-top: 0.25rem; }
.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 1.25rem; }
.form-row-3 { display: grid; grid-template-columns: 1fr 1fr 1fr; gap: 1.25rem; }
.form-inline { display: flex; gap: 0.625rem; align-items: center; }

/* Segmented Control */
.segmented-control { display: inline-flex; background: var(--gray-100); border-radius: var(--radius-md); padding: 3px; gap: 2px; width: 100%; }
.seg-item { flex: 1; display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.625rem 1rem; font-family: var(--font); font-size: var(--text-base); font-weight: 500; color: var(--gray-600); background: transparent; border: none; border-radius: var(--radius-sm); cursor: pointer; transition: all 200ms var(--ease); white-space: nowrap; }
.seg-item:hover { color: var(--gray-800); }
.seg-item.active { background: var(--white); color: var(--brand-800); box-shadow: var(--shadow-sm); font-weight: 600; }

/* Buttons */
.btn { display: inline-flex; align-items: center; justify-content: center; gap: 0.5rem; padding: 0.625rem 1.25rem; font-family: var(--font); font-size: var(--text-base); font-weight: 600; line-height: 1.4; border: 1px solid transparent; border-radius: var(--radius-md); cursor: pointer; transition: all 150ms var(--ease); text-decoration: none; white-space: nowrap; }
.btn:disabled { opacity: 0.5; cursor: not-allowed; }
.btn svg { width: 1rem; height: 1rem; flex-shrink: 0; }
.btn-primary { background: var(--brand-600); color: var(--white); border-color: var(--brand-600); }
.btn-primary:hover:not(:disabled) { background: var(--brand-500); border-color: var(--brand-500); color: var(--white); }
.btn-accent { background: var(--accent-500); color: var(--white); border-color: var(--accent-500); }
.btn-accent:hover:not(:disabled) { background: var(--accent-600); border-color: var(--accent-600); color: var(--white); }
.btn-secondary { background: var(--white); color: var(--gray-700); border-color: var(--gray-300); }
.btn-secondary:hover:not(:disabled) { background: var(--gray-50); border-color: var(--gray-400); color: var(--gray-800); }
.btn-ghost { background: transparent; color: var(--gray-600); border-color: transparent; }
.btn-ghost:hover:not(:disabled) { background: var(--gray-100); color: var(--gray-800); }
.btn-success { background: var(--success-500); color: var(--white); border-color: var(--success-500); }
.btn-success:hover:not(:disabled) { background: var(--success-600); border-color: var(--success-600); color: var(--white); }
.btn-sm { padding: 0.375rem 0.75rem; font-size: var(--text-sm); }
.btn-lg { padding: 1rem 1.5rem; font-size: var(--text-md); }
.btn-block { width: 100%; }

/* Badges */
.badge { display: inline-flex; align-items: center; padding: 2px 0.625rem; font-size: var(--text-xs); font-weight: 600; border-radius: var(--radius-full); line-height: 1.6; }
.badge-brand { background: var(--brand-100); color: var(--brand-700); }
.badge-accent { background: var(--accent-100); color: var(--accent-600); }
.badge-success { background: var(--success-100); color: var(--success-600); }
.badge-warning { background: var(--warning-100); color: var(--warning-600); }
.badge-danger { background: var(--danger-100); color: var(--danger-600); }
.badge-gray { background: var(--gray-100); color: var(--gray-600); }

/* Data grid */
.data-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(10rem, 1fr)); gap: 1rem; }
.data-item { background: var(--gray-50); border: 1px solid var(--gray-200); border-radius: var(--radius-md); padding: 1rem; text-align: center; }
.data-item__label { font-size: var(--text-xs); font-weight: 600; color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.04em; margin-bottom: 0.25rem; }
.data-item__value { font-size: var(--text-lg); font-weight: 700; color: var(--gray-900); }
.data-item--highlight { background: var(--brand-50); border-color: var(--brand-200); }
.data-item--highlight .data-item__value { color: var(--brand-600); }

/* Tables */
.table-wrap { overflow-x: auto; border: 1px solid var(--gray-200); border-radius: var(--radius-lg); }
.table { width: 100%; border-collapse: collapse; font-size: var(--text-sm); }
.table th { background: var(--brand-900); color: var(--white); padding: 0.75rem 1rem; text-align: center; font-weight: 600; font-size: var(--text-xs); text-transform: uppercase; letter-spacing: 0.04em; white-space: nowrap; }
.table td { padding: 0.75rem 1rem; text-align: center; border-bottom: 1px solid var(--gray-100); color: var(--gray-700); }
.table tbody tr:last-child td { border-bottom: none; }
.table tbody tr:nth-child(even) { background: var(--gray-50); }
.table tbody tr:hover { background: var(--brand-50); }
.table td.text-left { text-align: left; }

/* Alerts */
.alert { padding: 1rem 1.25rem; border-radius: var(--radius-md); border-left: 3px solid; font-size: var(--text-sm); line-height: 1.6; margin-bottom: 1rem; }
.alert-info { background: var(--brand-50); border-color: var(--brand-400); color: var(--brand-800); }
.alert-success { background: var(--success-100); border-color: var(--success-500); color: var(--success-600); }
.alert-warning { background: var(--warning-100); border-color: var(--warning-500); color: var(--warning-600); }
.alert-danger { background: var(--danger-100); border-color: var(--danger-500); color: var(--danger-600); }
.alert strong { font-weight: 600; }

/* Spinner */
.spinner { display: inline-block; width: 1.25rem; height: 1.25rem; border: 2px solid var(--gray-200); border-top-color: var(--brand-500); border-radius: 50%; animation: spin 0.6s linear infinite; }
.spinner--lg { width: 2rem; height: 2rem; border-width: 3px; }
@keyframes spin { to { transform: rotate(360deg); } }
.loading-state { display: flex; flex-direction: column; align-items: center; justify-content: center; gap: 1rem; padding: 3rem; color: var(--gray-500); font-size: var(--text-sm); }

/* Dropdown */
.dropdown { position: relative; }
.dropdown-trigger { width: 100%; display: flex; align-items: center; justify-content: space-between; padding: 0.625rem 0.875rem; font-family: var(--font); font-size: var(--text-base); color: var(--gray-800); background: var(--white); border: 1px solid var(--gray-300); border-radius: var(--radius-md); cursor: pointer; transition: border-color 150ms var(--ease); }
.dropdown-trigger:hover { border-color: var(--gray-400); }
.dropdown-trigger.open { border-color: var(--brand-400); box-shadow: 0 0 0 3px rgba(43,108,176,0.12); }
.dropdown-trigger .arrow { font-size: var(--text-xs); color: var(--gray-400); transition: transform 150ms var(--ease); }
.dropdown-trigger.open .arrow { transform: rotate(180deg); }
.dropdown-panel { position: absolute; top: calc(100% + 4px); left: 0; right: 0; z-index: 50; background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius-md); box-shadow: var(--shadow-lg); max-height: 15rem; overflow-y: auto; display: none; }
.dropdown-panel.open { display: block; }
.dropdown-option { display: flex; align-items: center; gap: 0.75rem; padding: 0.625rem 1rem; font-size: var(--text-sm); cursor: pointer; transition: background 150ms var(--ease); }
.dropdown-option:hover { background: var(--gray-50); }
.dropdown-option input[type="checkbox"] { width: 1rem; height: 1rem; accent-color: var(--brand-500); cursor: pointer; }
.dropdown-option label { cursor: pointer; flex: 1; color: var(--gray-700); margin: 0; }

/* Chart tooltip */
.chart-tooltip { position: absolute; background: var(--brand-900); color: var(--white); padding: 0.75rem 1rem; border-radius: var(--radius-md); font-size: var(--text-sm); line-height: 1.5; pointer-events: none; transform: translate(-50%, calc(-100% - 12px)); box-shadow: var(--shadow-xl); white-space: nowrap; z-index: 10; }
.chart-tooltip .status-outside { color: var(--warning-500); font-weight: 600; }

/* Deviation colors */
.text-positive { color: var(--danger-500); }
.text-negative { color: var(--warning-500); }
.text-exact    { color: var(--success-500); }

/* Conditional fields */
.conditional { display: none; opacity: 0; transition: opacity 200ms var(--ease); }
.conditional.show { display: block; opacity: 1; }

/* Section */
.section { margin-bottom: 2rem; }
.section-title { display: flex; align-items: center; gap: 0.75rem; font-size: var(--text-lg); font-weight: 700; color: var(--gray-900); margin-bottom: 1.25rem; letter-spacing: -0.01em; }
.section-title svg { width: 1.25rem; height: 1.25rem; color: var(--brand-400); flex-shrink: 0; }

/* Heat Pump Results Table - Engineering Precision */
@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:wght@400;500;600;700&display=swap');

.results-table-container {
  width: 100%;
  overflow-x: auto;
  margin-bottom: 2rem;
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  background: var(--white);
}

.hp-table {
  width: 100%;
  border-collapse: separate;
  border-spacing: 0;
  font-size: var(--text-sm);
}

.hp-table thead {
  background: linear-gradient(180deg, var(--brand-700) 0%, var(--brand-800) 100%);
  position: sticky;
  top: 0;
  z-index: 10;
}

.hp-th {
  padding: 1rem 0.875rem;
  text-align: left;
  font-size: 0.6875rem;
  font-weight: 700;
  color: var(--white);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  border-bottom: 3px solid var(--brand-900);
  white-space: nowrap;
}

.hp-th__sub {
  display: block;
  font-size: 0.625rem;
  font-weight: 500;
  color: var(--brand-200);
  text-transform: lowercase;
  margin-top: 0.125rem;
}

.hp-th--rank { width: 60px; text-align: center; }
.hp-th--model { min-width: 180px; }
.hp-th--type { width: 90px; text-align: center; }
.hp-th--num { text-align: right; width: 85px; }
.hp-th--action { width: 120px; text-align: center; }

.hp-tr {
  transition: all 200ms ease;
  border-bottom: 1px solid var(--gray-100);
}

.hp-tr:hover {
  background: var(--gray-50);
  box-shadow: inset 4px 0 0 var(--brand-400);
}

.hp-tr--top {
  background: linear-gradient(90deg, rgba(34, 193, 214, 0.04) 0%, rgba(255, 255, 255, 0) 100%);
}

.hp-tr--top:hover {
  background: linear-gradient(90deg, rgba(34, 193, 214, 0.08) 0%, var(--gray-50) 100%);
  box-shadow: inset 5px 0 0 var(--accent-500);
}

.hp-td {
  padding: 1.125rem 0.875rem;
  vertical-align: middle;
  border-bottom: 1px solid var(--gray-100);
}

.hp-td--rank {
  text-align: center;
}

.hp-rank {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 2.25rem;
  height: 2.25rem;
  background: var(--brand-600);
  color: var(--white);
  font-size: var(--text-base);
  font-weight: 800;
  border-radius: var(--radius-md);
  font-family: 'JetBrains Mono', monospace;
  box-shadow: var(--shadow-sm);
}

.hp-rank--top {
  background: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
  box-shadow: 0 0 0 3px var(--accent-100), var(--shadow-md);
  animation: rankPulse 2s ease-in-out infinite;
}

@keyframes rankPulse {
  0%, 100% { box-shadow: 0 0 0 3px var(--accent-100), var(--shadow-md); }
  50% { box-shadow: 0 0 0 5px rgba(34, 193, 214, 0.3), var(--shadow-lg); }
}

.hp-model-name {
  font-size: var(--text-base);
  font-weight: 700;
  color: var(--gray-900);
  margin-bottom: 0.25rem;
  letter-spacing: -0.01em;
}

.hp-model-meta {
  font-size: var(--text-xs);
  color: var(--gray-500);
}

.hp-comp-badge {
  display: inline-flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  padding: 0.5rem 0.75rem;
  border-radius: var(--radius-md);
  min-width: 70px;
  gap: 0.125rem;
  transition: all 200ms ease;
}

.hp-comp-badge--single {
  background: linear-gradient(135deg, var(--brand-100) 0%, var(--brand-50) 100%);
  border: 2px solid var(--brand-300);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.hp-comp-badge--dual {
  background: linear-gradient(135deg, var(--accent-100) 0%, var(--accent-50) 100%);
  border: 2px solid var(--accent-400);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5);
}

.hp-tr:hover .hp-comp-badge--single {
  border-color: var(--brand-500);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5), 0 0 0 3px var(--brand-100);
}

.hp-tr:hover .hp-comp-badge--dual {
  border-color: var(--accent-600);
  box-shadow: inset 0 1px 2px rgba(255, 255, 255, 0.5), 0 0 0 3px var(--accent-100);
}

.hp-comp-badge__type {
  font-size: var(--text-base);
  font-weight: 900;
  letter-spacing: 0.05em;
  font-family: 'JetBrains Mono', monospace;
}

.hp-comp-badge--single .hp-comp-badge__type {
  color: var(--brand-700);
}

.hp-comp-badge--dual .hp-comp-badge__type {
  color: var(--accent-700);
}

.hp-comp-badge__label {
  font-size: 0.625rem;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.hp-comp-badge--single .hp-comp-badge__label {
  color: var(--brand-600);
}

.hp-comp-badge--dual .hp-comp-badge__label {
  color: var(--accent-600);
}

.hp-td--num {
  text-align: right;
  font-family: 'JetBrains Mono', monospace;
  font-weight: 600;
  color: var(--gray-800);
  font-size: var(--text-base);
}

.hp-td--primary {
  color: var(--brand-600);
  font-weight: 700;
  font-size: 1.0625rem;
}

.hp-td--accent {
  color: var(--accent-600);
  font-weight: 700;
}

.hp-td--flow {
  font-size: var(--text-sm);
  line-height: 1.4;
}

.hp-flow-sub {
  color: var(--gray-500);
  font-size: 0.75rem;
}

.hp-deviation {
  font-weight: 700;
  margin-bottom: 0.125rem;
}

.hp-deviation--positive { color: var(--success-600); }
.hp-deviation--negative { color: var(--danger-600); }
.hp-deviation--exact { color: var(--gray-600); }

.hp-deviation-sub {
  font-size: 0.6875rem;
  color: var(--gray-500);
}

.hp-btn {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.625rem 1rem;
  background: var(--brand-600);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-size: var(--text-sm);
  font-weight: 600;
  cursor: pointer;
  transition: all 200ms ease;
  white-space: nowrap;
  box-shadow: var(--shadow-sm);
  font-family: var(--font);
}

.hp-btn:hover {
  background: var(--brand-700);
  box-shadow: var(--shadow-md);
  transform: translateY(-1px);
}

.hp-btn--top {
  background: linear-gradient(135deg, var(--accent-500) 0%, var(--accent-600) 100%);
}

.hp-btn--top:hover {
  background: linear-gradient(135deg, var(--accent-600) 0%, var(--accent-700) 100%);
}

.hp-btn svg {
  transition: transform 200ms ease;
}

.hp-btn:hover svg {
  transform: scale(1.15);
}

/* Legacy table styles (fallback) */
.results-table-wrapper { overflow-x: auto; margin-bottom: 2rem; border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); }
.results-table { width: 100%; background: var(--white); border-collapse: collapse; border: 1px solid var(--gray-200); border-radius: var(--radius-lg); overflow: hidden; font-size: var(--text-sm); }
.results-table thead { background: linear-gradient(180deg, var(--gray-50) 0%, var(--gray-100) 100%); }
.results-table th { padding: 0.875rem 1rem; text-align: left; font-size: var(--text-xs); font-weight: 700; color: var(--gray-700); text-transform: uppercase; letter-spacing: 0.05em; border-bottom: 2px solid var(--gray-200); white-space: nowrap; }
.results-table td { padding: 1rem; border-bottom: 1px solid var(--gray-100); vertical-align: middle; }
.results-table tbody tr { transition: background-color 150ms var(--ease); }
.results-table tbody tr:hover { background: var(--gray-50); }
.results-table tbody tr:last-child td { border-bottom: none; }
.rank-badge { display: inline-flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; background: var(--brand-600); color: var(--white); font-size: var(--text-sm); font-weight: 700; border-radius: var(--radius-full); }
.rank-badge.rank-1 { background: var(--accent-500); box-shadow: 0 0 0 3px var(--accent-100); }
.badge { display: inline-flex; align-items: center; padding: 0.125rem 0.5rem; font-size: var(--text-xs); font-weight: 600; border-radius: var(--radius-md); text-transform: uppercase; letter-spacing: 0.03em; }
.badge-single { background: var(--brand-100); color: var(--brand-700); }
.badge-dual { background: var(--accent-100); color: var(--accent-700); }
.text-positive { color: var(--success-600); }
.text-negative { color: var(--danger-600); }
.text-exact { color: var(--gray-600); }

/* Legacy card styles (keep for backward compatibility) */
.results-grid { display: flex; flex-direction: column; gap: 1rem; }
.result-card { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius-lg); box-shadow: var(--shadow-xs); transition: box-shadow 200ms var(--ease), border-color 200ms var(--ease); }
.result-card:hover { box-shadow: var(--shadow-md); border-color: var(--gray-300); }
.result-card-inner { display: grid; grid-template-columns: 3rem 1fr 1fr 1fr 1fr auto; align-items: center; gap: 1.5rem; padding: 1.25rem 1.5rem; }
.result-rank { display: flex; align-items: center; justify-content: center; width: 2rem; height: 2rem; background: var(--brand-600); color: var(--white); font-size: var(--text-sm); font-weight: 700; border-radius: var(--radius-full); flex-shrink: 0; }
.result-rank.rank-1 { background: var(--accent-500); }
.result-meta { min-width: 0; }
.result-meta h4 { font-size: var(--text-base); font-weight: 600; color: var(--gray-900); margin-bottom: 0.125rem; white-space: nowrap; overflow: hidden; text-overflow: ellipsis; }
.result-meta p { font-size: var(--text-xs); color: var(--gray-500); }
.result-stat { text-align: center; }
.result-stat .val { font-size: var(--text-md); font-weight: 700; color: var(--gray-900); }
.result-stat .lbl { font-size: var(--text-xs); color: var(--gray-500); text-transform: uppercase; letter-spacing: 0.03em; }

/* Chart containers */
.chart-container { background: var(--white); border: 1px solid var(--gray-200); border-radius: var(--radius-lg); padding: 1.5rem; box-shadow: var(--shadow-xs); position: relative; }
.chart-container canvas { width: 100% !important; }
.chart-container h4 { font-size: var(--text-base); font-weight: 600; color: var(--gray-800); margin-bottom: 1rem; }

/* Print */
@media print { .topbar, .btn, .no-print { display: none !important; } body { background: var(--white); } .card { box-shadow: none; border: 1px solid var(--gray-200); } }

/* Responsive */
@media (max-width: 80rem) {
    /* Reduce some column widths on large tablets */
    .hp-th--num { width: 75px; }
}

@media (max-width: 64rem) {
    .result-card-inner { grid-template-columns: 2.5rem 1.5fr 1fr 1fr auto; }
    .result-card-inner > :nth-child(4), .result-card-inner > :nth-child(5) { display: none; }

    /* Hide less critical columns on tablet */
    .hp-table .hp-th:nth-child(5), /* Cooling */
    .hp-table .hp-td:nth-child(5),
    .hp-table .hp-th:nth-child(7), /* Current */
    .hp-table .hp-td:nth-child(7) {
        display: none;
    }
}

@media (max-width: 48rem) {
    .page-container { padding: 1rem; }
    .form-row, .form-row-3 { grid-template-columns: 1fr; }
    .data-grid { grid-template-columns: repeat(2, 1fr); }
    .topbar-nav { display: none; }

    /* Mobile: Stack table as cards */
    .results-table-container {
        box-shadow: none;
        background: transparent;
    }

    .hp-table thead {
        display: none;
    }

    .hp-table, .hp-table tbody {
        display: block;
    }

    .hp-tr {
        display: block;
        margin-bottom: 1rem;
        border: 1px solid var(--gray-200);
        border-radius: var(--radius-lg);
        background: var(--white);
        box-shadow: var(--shadow-sm);
    }

    .hp-tr--top {
        border: 2px solid var(--accent-400);
    }

    .hp-td {
        display: flex;
        justify-content: space-between;
        align-items: center;
        padding: 0.875rem 1rem;
        border-bottom: 1px solid var(--gray-100);
    }

    .hp-td:last-child {
        border-bottom: none;
    }

    .hp-td::before {
        content: attr(data-label);
        font-weight: 600;
        color: var(--gray-600);
        font-size: var(--text-xs);
        text-transform: uppercase;
        letter-spacing: 0.05em;
    }

    .hp-td--rank::before { content: "Rank"; }
    .hp-td--model::before { content: "Model"; }
    .hp-td--type::before { content: "Type"; }
    .hp-td--num::before { content: attr(data-label); }
    .hp-td--action::before { content: ""; }

    .hp-td--rank,
    .hp-td--model,
    .hp-td--type,
    .hp-td--num,
    .hp-td--action {
        text-align: right;
    }

    .hp-td--model {
        flex-direction: column;
        align-items: flex-start;
        gap: 0.5rem;
    }

    .hp-td--action {
        justify-content: center;
        padding: 1rem;
    }

    .hp-btn {
        width: 100%;
        justify-content: center;
    }

    .hp-comp-badge {
        min-width: auto;
    }
}

@media (max-width: 30rem) {
    .data-grid { grid-template-columns: 1fr; }
    .segmented-control { flex-direction: column; }
}