/* BigEnergyCo site styles, extracted verbatim from index.html.
 * Loaded via <link> with the unified ?v= cache-busting stamp (see
 * scripts/bump-asset-tokens.mjs). Keep page-specific overrides inline
 * only if they must beat this sheet without a redeploy. */
/* BigEnergyCo Design System - Premium Dark Glassmorphic Energy Aesthetic */

:root {
  color-scheme: dark;

  -webkit-text-size-adjust: 100%;

  text-size-adjust: 100%;

  --bg-dark: #090d16;

  --bg-card: rgba(18, 26, 44, 0.85);

  --bg-card-hover: rgba(28, 40, 66, 0.95);

  --border-glow: rgba(0, 230, 153, 0.35);

  --border-card: rgba(255, 255, 255, 0.12);

  --primary-accent: #00e699; /* Energy Emerald */

  --primary-glow: rgba(0, 230, 153, 0.5);

  --secondary-accent: #3b82f6; /* Cyber Blue */

  --warning-orange: #f59e0b; /* Amber Caution */

  --danger-red: #ef4444;

  --text-main: #f3f4f6;

  --text-muted: #9ca3af;

  --text-bright: #ffffff;

  --font-main:
    system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, Helvetica,
    Arial, sans-serif;

  --font-mono: ui-monospace, SFMono-Regular, Menlo, Monaco, Consolas, monospace;
}

* {
  box-sizing: border-box;

  margin: 0;

  padding: 0;

  scrollbar-width: thin;

  scrollbar-color: rgba(0, 230, 153, 0.3) rgba(9, 13, 22, 0.85);

  -webkit-tap-highlight-color: transparent;
}

html {
  overflow-x: hidden;

  width: 100%;

  max-width: 100%;
}

body {
  background-color: var(--bg-dark);

  color: var(--text-main);

  font-family: var(--font-main);

  line-height: 1.6;

  width: 100%;

  max-width: 100%;

  overflow-x: hidden;

  -webkit-font-smoothing: antialiased;

  -moz-osx-font-smoothing: grayscale;

  background-image:
    radial-gradient(
      circle at 15% 20%,
      rgba(0, 230, 153, 0.12) 0%,
      transparent 45%
    ),
    radial-gradient(
      circle at 85% 70%,
      rgba(59, 130, 246, 0.12) 0%,
      transparent 45%
    );

  background-attachment: fixed;
}

/* Cross-browser scrollbars for WebKit & Blink */
::-webkit-scrollbar {
  width: 8px;

  height: 8px;
}

::-webkit-scrollbar-track {
  background: rgba(9, 13, 22, 0.95);
}

::-webkit-scrollbar-thumb {
  background: rgba(0, 230, 153, 0.28);

  border-radius: 4px;
}

::-webkit-scrollbar-thumb:hover {
  background: rgba(0, 230, 153, 0.5);
}

a {
  color: var(--primary-accent);

  text-decoration: none;

  transition: all 0.2s ease;
}

a:hover {
  text-shadow: 0 0 10px var(--primary-glow);
}

.container {
  max-width: 1280px;

  margin: 0 auto;

  padding: 0 1.5rem;
}

/* Header & Navigation */

header {
  position: sticky;

  top: 0;

  z-index: 100;

  backdrop-filter: blur(16px);

  -webkit-backdrop-filter: blur(16px);

  background: rgba(9, 13, 22, 0.9);

  border-bottom: 1px solid var(--border-card);

  padding: 1rem 0;

  padding-top: max(1rem, env(safe-area-inset-top));
}

.nav-flex {
  display: flex;

  justify-content: space-between;

  align-items: center;
}

.logo {
  font-size: 1.5rem;

  font-weight: 800;

  letter-spacing: -0.5px;

  background: linear-gradient(135deg, #ffffff 0%, var(--primary-accent) 100%);

  -webkit-background-clip: text;

  -webkit-text-fill-color: transparent;

  display: flex;

  align-items: center;

  gap: 0.5rem;
}

.logo .highlight {
  color: var(--primary-accent);

  -webkit-text-fill-color: var(--primary-accent);
}

.nav-links {
  display: flex;

  gap: 2rem;

  align-items: center;
}

.nav-links a {
  color: var(--text-muted);

  font-size: 0.95rem;

  font-weight: 500;
}

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

.header-cta {
  display: flex;

  gap: 0.75rem;
}

/* Buttons */

.btn {
  display: inline-flex;

  align-items: center;

  justify-content: center;

  gap: 0.5rem;

  padding: 0.65rem 1.4rem;

  border-radius: 8px;

  font-weight: 600;

  font-size: 0.95rem;

  cursor: pointer;

  transition: all 0.25s ease;

  border: none;
}

.btn-primary {
  background: linear-gradient(135deg, #00e699 0%, #00b377 100%);

  color: #04120c;

  font-weight: 700;

  box-shadow: 0 0 15px rgba(0, 230, 153, 0.3);
}

.btn-primary:hover {
  transform: translateY(-2px);

  box-shadow: 0 0 25px rgba(0, 230, 153, 0.5);
}

.btn-secondary {
  background: rgba(59, 130, 246, 0.15);

  color: #60a5fa;

  border: 1px solid rgba(59, 130, 246, 0.4);
}

.btn-secondary:hover {
  background: rgba(59, 130, 246, 0.3);

  color: #fff;

  transform: translateY(-2px);
}

.btn-outline {
  background: transparent;

  color: var(--text-main);

  border: 1px solid var(--border-card);
}

.btn-outline:hover {
  border-color: var(--primary-accent);

  color: var(--primary-accent);
}

.btn-full {
  width: 100%;
}

/* Real <button> elements styled as .btn need UA-style resets */
button.btn {
  font-family: inherit;
}

/* Result detail ladder (Best pick / Compare batteries / All options) */
#resultLadder {
  display: none;

  gap: 0.5rem;

  flex-wrap: wrap;
}

.ladder-tab {
  appearance: none;

  border: 1px solid var(--border-card);

  background: rgba(9, 13, 22, 0.85);

  color: var(--text-muted);

  padding: 0.5rem 1.05rem;

  border-radius: 999px;

  cursor: pointer;

  font-size: 0.85rem;

  font-weight: 600;

  font-family: inherit;

  transition: all 0.2s ease;
}

.ladder-tab:hover {
  color: var(--text-main);

  border-color: var(--primary-accent);
}

.ladder-active {
  background: rgba(0, 230, 153, 0.12);

  color: var(--primary-accent);

  border-color: var(--primary-accent);
}

/* All-options comparison matrix */
.matrix-wrap {
  overflow-x: auto;
}

.matrix-table {
  width: 100%;

  border-collapse: collapse;

  font-size: 0.82rem;
}

.matrix-table th,
.matrix-table td {
  padding: 0.55rem 0.65rem;

  border: 1px solid var(--border-card);

  text-align: left;

  vertical-align: top;

  line-height: 1.45;
}

.matrix-table th {
  color: var(--text-main);

  background: rgba(9, 13, 22, 0.85);
}

.matrix-best {
  outline: 2px solid rgba(0, 230, 153, 0.55);

  outline-offset: -2px;

  background: rgba(0, 230, 153, 0.05);
}

/* Hero Section */

.hero {
  padding: 5rem 0 4rem;

  text-align: center;

  position: relative;
}

.hero-tag {
  display: inline-block;

  background: rgba(0, 230, 153, 0.12);

  color: var(--primary-accent);

  border: 1px solid var(--primary-glow);

  padding: 0.35rem 1.1rem;

  border-radius: 30px;

  font-size: 0.85rem;

  font-weight: 600;

  margin-bottom: 1.5rem;

  letter-spacing: 0.5px;
}

.hero h1 {
  font-size: 3.25rem;

  font-weight: 900;

  line-height: 1.15;

  margin-bottom: 1.5rem;

  letter-spacing: -1px;
}

.hero h1 span {
  background: linear-gradient(135deg, #00e699 0%, #60a5fa 100%);

  -webkit-background-clip: text;

  -webkit-text-fill-color: transparent;
}

.hero p {
  font-size: 1.2rem;

  color: var(--text-muted);

  max-width: 800px;

  margin: 0 auto 2.5rem;
}

.hero-actions {
  display: flex;

  justify-content: center;

  gap: 1rem;

  flex-wrap: wrap;

  margin-bottom: 3.5rem;
}

.hero-stats-grid {
  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));

  gap: 1.5rem;
}

.stat-card {
  background: var(--bg-card);

  border: 1px solid var(--border-card);

  backdrop-filter: blur(12px);

  -webkit-backdrop-filter: blur(12px);

  padding: 1.5rem;

  border-radius: 12px;

  text-align: left;

  transition: all 0.3s ease;
}

.stat-card:hover {
  border-color: var(--border-glow);

  transform: translateY(-4px);
}

.stat-val {
  font-size: 2.2rem;

  font-weight: 800;

  color: var(--primary-accent);

  font-family: var(--font-mono);
}

.stat-label {
  color: var(--text-muted);

  font-size: 0.85rem;

  margin-top: 0.25rem;
}

/* Calculator Section */

.calc-section {
  padding: 4rem 0;
}

.section-header {
  text-align: center;

  margin-bottom: 2.5rem;
}

.section-title {
  font-size: 2.25rem;

  font-weight: 800;
}

.section-desc {
  color: var(--text-muted);

  font-size: 1.05rem;

  margin-top: 0.5rem;
}

.calc-card {
  background: var(--bg-card);

  border: 1px solid var(--border-glow);

  border-radius: 16px;

  padding: 2.5rem;

  box-shadow: 0 20px 50px rgba(0, 0, 0, 0.6);

  display: grid;

  grid-template-columns: 1fr 1fr;

  gap: 2.5rem;
}

/* Container, Card and Layout Sizing - prevents horizontal overflow blowout */
.calc-card,
.calc-controls,
.results-box,
#bestPickWrap,
#tierResults,
#frontierWrap,
#socChartWrap,
#cumCostChartWrap,
#bomPanel,
#cutSliderRow,
#billSliderWrap {
  min-width: 0;
  max-width: 100%;
}

.results-box {
  overflow-x: hidden;
}

.matrix-wrap {
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  max-width: 100%;
}

canvas {
  max-width: 100% !important;
  height: auto !important;
}

/* Range slider cross-browser track and thumb styling */
input[type="range"] {
  -webkit-appearance: none;
  appearance: none;
  background: rgba(255, 255, 255, 0.12);
  height: 6px;
  border-radius: 3px;
  outline: none;
}

input[type="range"]::-webkit-slider-thumb {
  -webkit-appearance: none;
  appearance: none;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--primary-accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--primary-glow);
  transition: transform 0.15s ease;
}

input[type="range"]::-webkit-slider-thumb:hover,
input[type="range"]::-webkit-slider-thumb:active {
  transform: scale(1.15);
}

input[type="range"]::-moz-range-thumb {
  width: 22px;
  height: 22px;
  border: none;
  border-radius: 50%;
  background: var(--primary-accent);
  cursor: pointer;
  box-shadow: 0 0 10px var(--primary-glow);
  transition: transform 0.15s ease;
}

input[type="range"]::-moz-range-track {
  background: rgba(255, 255, 255, 0.12);
  height: 6px;
  border-radius: 3px;
}

/* Firefox number input spinner reset */
input[type="number"] {
  -moz-appearance: textfield;
}

input[type="number"]::-webkit-outer-spin-button,
input[type="number"]::-webkit-inner-spin-button {
  -webkit-appearance: none;
  margin: 0;
}

/* Mobile navigation toggle button & drawer */
.nav-toggle {
  display: none;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  width: 40px;
  height: 40px;
  min-width: 40px;
  min-height: 40px;
  padding: 8px;
  cursor: pointer;
  flex-direction: column;
  justify-content: space-around;
  align-items: center;
  transition: all 0.2s ease;
  touch-action: manipulation;
}

.nav-toggle:hover {
  border-color: var(--primary-accent);
  background: rgba(255, 255, 255, 0.1);
}

.nav-toggle:focus-visible {
  outline: 2px solid var(--primary-accent);
  outline-offset: 2px;
}

.nav-toggle-bar {
  width: 20px;
  height: 2px;
  background-color: var(--text-main);
  border-radius: 2px;
  transition: all 0.25s ease;
}

.nav-toggle.open .nav-toggle-bar:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.nav-toggle.open .nav-toggle-bar:nth-child(2) {
  opacity: 0;
}

.nav-toggle.open .nav-toggle-bar:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

.mobile-nav-drawer {
  display: none;
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  background: rgba(9, 13, 22, 0.98);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border-bottom: 1px solid var(--border-card);
  padding: 1.25rem 1.5rem;
  flex-direction: column;
  gap: 0.5rem;
  box-shadow: 0 20px 40px rgba(0, 0, 0, 0.7);
  z-index: 99;
}

.mobile-nav-drawer.open {
  display: flex;
}

.mobile-nav-drawer a {
  color: var(--text-muted);
  font-size: 1.05rem;
  font-weight: 600;
  padding: 0.75rem 0.5rem;
  border-bottom: 1px solid rgba(255, 255, 255, 0.06);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-decoration: none;
  transition: color 0.2s ease;
}

.mobile-nav-drawer a:hover,
.mobile-nav-drawer a:active {
  color: var(--primary-accent);
}

@media (max-width: 900px) {
  .calc-card {
    grid-template-columns: 1fr;
  }
}

@media (max-width: 830px) {
  .nav-links {
    display: none;
  }

  .nav-toggle {
    display: flex;
  }

  .header-cta {
    gap: 0.5rem;
  }

  .header-cta .btn {
    padding: 0.5rem 0.85rem;
    font-size: 0.85rem;
  }
}

@media (max-width: 768px) {
  .hero {
    padding: 3rem 0 2.5rem;
  }

  .hero h1 {
    font-size: clamp(1.85rem, 6vw, 2.5rem);
  }

  .hero p {
    font-size: 1rem;
  }

  .section-title {
    font-size: 1.75rem;
  }

  .stat-val {
    font-size: 1.65rem;
  }

  .calc-card {
    padding: 1.5rem 1.25rem;
    gap: 1.5rem;
  }

  .results-box {
    padding: 1.25rem 1rem;
  }

  /* Prevent iOS Safari form input auto-zoom */
  input.form-control,
  select.form-control,
  textarea.form-control,
  #langSelect {
    font-size: 16px !important;
  }
}

@media (max-width: 480px) {
  .container {
    padding: 0 1rem;
  }

  .nav-flex {
    flex-wrap: wrap;
    row-gap: 0.5rem;
  }

  .logo {
    font-size: 1.2rem;
  }

  .header-cta .btn {
    padding: 0.45rem 0.65rem;
    font-size: 0.8rem;
  }

  .calc-card {
    padding: 1.25rem 0.85rem;
    border-radius: 12px;
  }

  .results-box {
    padding: 1rem 0.75rem;
    border-radius: 10px;
  }

  .hero-stats-grid {
    grid-template-columns: 1fr 1fr;
    gap: 0.75rem;
  }

  .stat-card {
    padding: 1rem;
  }

  .stat-val {
    font-size: 1.45rem;
  }

  .stat-label {
    font-size: 0.78rem;
  }

  .savings-num {
    font-size: 2.1rem;
  }

  .modal-card {
    padding: 1.25rem 1rem;
    width: 95%;
    border-radius: 12px;
  }
}

@media (max-width: 360px) {
  .hero h1 {
    font-size: 1.65rem;
  }

  .logo {
    font-size: 1.1rem;
  }

  .header-cta #btnNavSizeArray {
    display: none;
  }
}

/* Keyboard users need a visible focus ring on every button-style element. */

.btn:focus-visible,
.ladder-tab:focus-visible {
  outline: 2px solid var(--primary-accent);

  outline-offset: 2px;
}

/* Respect users who ask for less motion. */

@media (prefers-reduced-motion: reduce) {
  *,
  *::before,
  *::after {
    animation: none !important;

    transition: none !important;
  }
}

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

.form-group label {
  display: block;

  font-size: 0.95rem;

  font-weight: 600;

  margin-bottom: 0.5rem;

  color: var(--text-main);
}

.form-control {
  width: 100%;

  padding: 0.8rem 1rem;

  background: rgba(9, 13, 22, 0.85);

  border: 1px solid var(--border-card);

  border-radius: 8px;

  color: var(--text-main);

  font-size: 1rem;

  font-family: var(--font-mono);
}

.form-control:focus {
  outline: none;

  border-color: var(--primary-accent);

  box-shadow: 0 0 10px var(--primary-glow);
}

.results-box {
  background: rgba(9, 13, 22, 0.9);

  border: 1px solid var(--border-card);

  border-radius: 12px;

  padding: 2rem;

  display: flex;

  flex-direction: column;

  justify-content: space-between;
}

.savings-highlight {
  text-align: center;

  padding: 1.5rem;

  background: rgba(0, 230, 153, 0.08);

  border: 1px solid var(--primary-glow);

  border-radius: 10px;

  margin-bottom: 1.5rem;
}

.savings-num {
  font-size: 2.75rem;

  font-weight: 900;

  color: var(--primary-accent);

  font-family: var(--font-mono);
}

.savings-sub {
  font-size: 0.9rem;

  color: var(--text-muted);

  margin-top: 0.25rem;
}

/* BOM Section */

.bom-section {
  padding: 4rem 0;
}

.bom-grid {
  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(260px, 1fr));

  gap: 1.5rem;
}

.bom-card {
  background: var(--bg-card);

  border: 1px solid var(--border-card);

  padding: 1.75rem;

  border-radius: 14px;

  position: relative;

  transition: all 0.3s ease;
}

.bom-card:hover {
  border-color: var(--border-glow);

  transform: translateY(-4px);
}

.bom-card.card-selectable {
  cursor: pointer;
}

.bom-card-selected {
  border-color: var(--primary-accent) !important;

  box-shadow: 0 0 16px rgba(0, 230, 153, 0.3);
}

.bom-badge {
  display: inline-block;

  background: rgba(59, 130, 246, 0.15);

  color: #60a5fa;

  border: 1px solid rgba(59, 130, 246, 0.4);

  font-size: 0.75rem;

  font-weight: 700;

  padding: 0.2rem 0.6rem;

  border-radius: 20px;

  margin-bottom: 0.75rem;
}

.best-price-callout {
  display: block;

  background: rgba(0, 230, 153, 0.08);

  border: 1px solid rgba(0, 230, 153, 0.25);

  color: var(--text-color);

  font-size: 0.8rem;

  line-height: 1.45;

  padding: 0.5rem 0.75rem;

  border-radius: 8px;

  margin-top: 0.6rem;
}

.bom-card h3 {
  font-size: 1.2rem;

  font-weight: 700;

  margin-bottom: 0.5rem;
}

.bom-card p {
  color: var(--text-muted);

  font-size: 0.9rem;

  margin-bottom: 1.25rem;
}

.bom-price {
  font-family: var(--font-mono);

  font-size: 1.1rem;

  font-weight: 800;

  color: var(--primary-accent);
}

/* Legal Cards Section */

.legal-section {
  padding: 4rem 0;
}

.legal-grid {
  display: grid;

  grid-template-columns: repeat(auto-fit, minmax(300px, 1fr));

  gap: 1.5rem;
}

.legal-card {
  background: var(--bg-card);

  border: 1px solid var(--border-card);

  padding: 1.75rem;

  border-radius: 14px;
}

.legal-card h3 {
  font-size: 1.25rem;

  font-weight: 700;

  margin-bottom: 0.75rem;
}

.legal-card p {
  color: var(--text-muted);

  font-size: 0.9rem;

  margin-bottom: 1.25rem;
}

/* Modals */

.modal-overlay {
  position: fixed;

  top: 0;

  left: 0;

  width: 100%;

  height: 100%;

  background: rgba(0, 0, 0, 0.85);

  backdrop-filter: blur(8px);

  -webkit-backdrop-filter: blur(8px);

  display: none;

  justify-content: center;

  align-items: center;

  z-index: 1000;
}

.modal-card {
  background: #0d1322;

  border: 1px solid var(--border-glow);

  border-radius: 16px;

  padding: 2rem;

  max-width: 680px;

  width: 92%;

  max-height: 90vh;

  max-height: 90dvh;

  overflow-y: auto;

  -webkit-overflow-scrolling: touch;

  box-shadow: 0 25px 60px rgba(0, 0, 0, 0.8);
}

.modal-header {
  display: flex;

  justify-content: space-between;

  align-items: center;

  margin-bottom: 1.25rem;

  border-bottom: 1px solid var(--border-card);

  padding-bottom: 1rem;
}

.close-btn {
  background: rgba(255, 255, 255, 0.05);

  border: 1px solid var(--border-card);

  border-radius: 8px;

  color: var(--text-muted);

  font-size: 1.5rem;

  line-height: 1;

  width: 44px;

  height: 44px;

  min-width: 44px;

  min-height: 44px;

  display: inline-flex;

  align-items: center;

  justify-content: center;

  cursor: pointer;

  transition: all 0.2s ease;

  touch-action: manipulation;
}

.close-btn:hover {
  color: #fff;

  border-color: var(--border-glow);

  background: rgba(255, 255, 255, 0.1);
}

.close-btn:focus-visible {
  outline: 2px solid var(--primary-accent);

  outline-offset: 2px;
}

/* Chatbox Inside Modal */

.chat-box {
  height: 300px;

  overflow-y: auto;

  background: rgba(9, 13, 22, 0.95);

  border: 1px solid var(--border-card);

  border-radius: 10px;

  padding: 1rem;

  display: flex;

  flex-direction: column;

  gap: 0.75rem;

  margin-bottom: 1rem;
}

.chat-msg {
  max-width: 85%;

  padding: 0.75rem 1rem;

  border-radius: 12px;

  font-size: 0.9rem;

  line-height: 1.4;
}

.chat-msg.bot {
  background: rgba(18, 26, 44, 0.95);

  border: 1px solid var(--primary-glow);

  color: var(--text-main);

  align-self: flex-start;
}

.chat-msg.user {
  background: rgba(0, 230, 153, 0.2);

  border: 1px solid var(--primary-accent);

  color: #fff;

  align-self: flex-end;
}

.chat-input-row {
  display: flex;

  gap: 0.75rem;
}

/* Footer */

footer {
  border-top: 1px solid var(--border-card);

  padding: 3rem 0 max(3rem, env(safe-area-inset-bottom));

  text-align: center;

  color: var(--text-muted);

  font-size: 0.9rem;

  margin-top: 4rem;
}

.btn .spin {
  display: inline-block;
  animation: becospin 1s linear infinite;
}
@keyframes becospin {
  to {
    transform: rotate(360deg);
  }
}

/* Printable summary: at print time, only the estimate sheet survives. */

#printSheet {
  display: none;
}

@media print {
  body > *:not(#printSheet) {
    display: none !important;
  }

  #printSheet {
    display: block !important;
  }

  body {
    background: #fff !important;
    color: #000 !important;
    overflow: visible !important;
    background-image: none !important;
  }
}

/* PWA Offline & Install */
.offline-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.25rem 0.65rem;
  background: rgba(239, 68, 68, 0.15);
  border: 1px solid rgba(239, 68, 68, 0.4);
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: 700;
  color: #fca5a5;
  user-select: none;
}
.offline-badge.online-flash {
  background: rgba(0, 230, 153, 0.15);
  border-color: rgba(0, 230, 153, 0.4);
  color: var(--primary-accent);
}
.offline-dot {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: #ef4444;
  display: inline-block;
  animation: becopulse 2s infinite;
}
.offline-badge.online-flash .offline-dot {
  background: var(--primary-accent);
}
@keyframes becopulse {
  0%,
  100% {
    opacity: 1;
  }
  50% {
    opacity: 0.4;
  }
}

.btn-xs {
  padding: 0.25rem 0.6rem;
  font-size: 0.78rem;
  line-height: 1.3;
}

/* Sun-path Graphic */
.sun-path-wrap {
  background: rgba(13, 19, 34, 0.85);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 0.85rem 1rem;
  position: relative;
  overflow: hidden;
}
.sun-path-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
}
.sun-path-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(130px, 1fr));
  gap: 0.5rem;
  margin-top: 0.6rem;
  font-size: 0.78rem;
}
.sun-path-metric {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--border-card);
  border-radius: 8px;
  padding: 0.45rem 0.65rem;
}
.sun-path-metric-title {
  color: var(--text-muted);
  font-size: 0.72rem;
  margin-bottom: 0.15rem;
  display: flex;
  align-items: center;
  gap: 0.3rem;
}
.sun-path-metric-val {
  font-weight: 800;
  font-family: var(--font-mono);
  color: var(--text-main);
}

/* Battery Chemistry Temperature Visualizer */
.chem-temp-wrap {
  background: rgba(13, 19, 34, 0.85);
  border: 1px solid var(--border-card);
  border-radius: 12px;
  padding: 0.85rem 1rem;
}
.chem-temp-title {
  font-size: 0.85rem;
  font-weight: 700;
  color: var(--text-main);
  display: flex;
  justify-content: space-between;
  align-items: center;
  margin-bottom: 0.6rem;
}
.chem-temp-bar-wrap {
  position: relative;
  height: 18px;
  background: linear-gradient(
    90deg,
    #1e3a8a 0%,
    #0284c7 35%,
    #059669 65%,
    #f59e0b 85%,
    #dc2626 100%
  );
  border-radius: 9px;
  margin: 1.4rem 0 0.5rem;
}
.chem-temp-pin {
  position: absolute;
  top: -19px;
  transform: translateX(-50%);
  display: flex;
  flex-direction: column;
  align-items: center;
  pointer-events: none;
  transition: left 0.3s ease;
}
.chem-temp-pin-label {
  font-size: 0.68rem;
  font-family: var(--font-mono);
  font-weight: 800;
  background: #0d1322;
  border: 1px solid var(--primary-accent);
  padding: 0.05rem 0.35rem;
  border-radius: 4px;
  color: var(--primary-accent);
  white-space: nowrap;
}
.chem-temp-pin-arrow {
  width: 0;
  height: 0;
  border-left: 4px solid transparent;
  border-right: 4px solid transparent;
  border-top: 5px solid var(--primary-accent);
}
.chem-temp-legend {
  display: flex;
  justify-content: space-between;
  font-size: 0.7rem;
  font-family: var(--font-mono);
  color: var(--text-muted);
}
.chem-temp-status-box {
  margin-top: 0.65rem;
  padding: 0.55rem 0.75rem;
  border-radius: 8px;
  font-size: 0.8rem;
  line-height: 1.45;
}

/* Preset Buttons */
.preset-btn:hover {
  border-color: var(--primary-accent) !important;
  color: #fff !important;
}