/* ==========================================================
   Alta Cloud TCO Calculator · Internal Alta Theme
   Scope: visual/theme only. Business logic lives in tco-*.js.
   Default: DARK mode. Light mode remains available via the header toggle.
   ========================================================== */

:root[data-theme="light"] {
  color-scheme: light;
  --r5-bg: #f2f5f9;
  --r5-page: linear-gradient(180deg, #eef3f8 0%, #f6f8fb 42%, #edf2f7 100%);
  --r5-text: #1c1f24;
  --r5-muted: #5f6876;
  --r5-muted-2: #747d8b;
  --r5-faint: #8b93a1;
  --r5-card: #e9eef5;
  --r5-card-hover: #e3eaf3;
  --r5-panel: #edf2f7;
  --r5-section: #f7f9fc;
  --r5-border: #d7e0eb;
  --r5-border-strong: rgba(11, 111, 232, .38);
  --r5-divider: #dfe6ef;
  --r5-chip: #e5ebf3;
  --r5-row-hover: #e8eff7;
  --r5-accent: #0b6fe8;
  --r5-accent-2: #1685ff;
  --r5-teal: #18a7bd;
  --r5-lime: #6da51d;
  --r5-accent-soft: rgba(11, 111, 232, .10);
  --r5-teal-soft: rgba(24, 167, 189, .12);
  --r5-success: #2e9f66;
  --r5-warn: #9a6700;
  --r5-danger: #c83d4a;
  --r5-card-shadow: 0 1px 2px rgba(20, 40, 80, .04);
  --r5-card-hover-shadow: 0 8px 24px rgba(20, 40, 80, .08);
  --r5-glow: rgba(11, 111, 232, .08);
  --r5-geo-opacity: .16;
  --r5-geo-stroke: #c0d2ef;

  --bg: var(--r5-bg);
  --panel: var(--r5-section);
  --panel-alt: var(--r5-panel);
  --ink: var(--r5-text);
  --muted: var(--r5-muted);
  --line: var(--r5-border);
  --input-bg: #f0f4f8;
  --focus-bg: #f8fafc;
  --panel-bg: var(--r5-section);
  --topbar-bg: rgba(242, 245, 249, .78);
  --hero-bg: transparent;
  --onprem: #64748b;
  --cloud: var(--r5-accent);
  --hybrid: #d38300;
  --danger: var(--r5-danger);
  --success: var(--r5-success);
  --info: var(--r5-accent);
  --warning: var(--r5-warn);
  --shadow-soft: var(--r5-card-shadow);
  --shadow-glow: 0 0 0 1px rgba(11, 111, 232, .18), 0 10px 26px rgba(11, 111, 232, .10);
}

:root,
:root[data-theme="dark"] {
  color-scheme: dark;
  --r5-bg: #09162a;
  --r5-page: radial-gradient(1300px 820px at 80% -8%, #19376f 0%, #102448 42%, #0b1a33 72%, #09162a 100%);
  --r5-text: #e9f0fb;
  --r5-muted: #9aabc9;
  --r5-muted-2: #8597b8;
  --r5-faint: #7285a8;
  --r5-card: rgba(18, 34, 62, .82);
  --r5-card-hover: rgba(26, 47, 86, .92);
  --r5-panel: rgba(20, 37, 68, .86);
  --r5-section: rgba(18, 34, 62, .84);
  --r5-border: rgba(137, 169, 225, .24);
  --r5-border-strong: rgba(43, 139, 255, .48);
  --r5-divider: rgba(137, 169, 225, .18);
  --r5-chip: rgba(137, 169, 225, .18);
  --r5-row-hover: rgba(36, 61, 110, .62);
  --r5-accent: #2b8bff;
  --r5-accent-2: #34c2df;
  --r5-teal: #34c2df;
  --r5-lime: #a6da4c;
  --r5-accent-soft: rgba(43, 139, 255, .14);
  --r5-teal-soft: rgba(52, 194, 223, .14);
  --r5-success: #48d178;
  --r5-warn: #ffb84d;
  --r5-danger: #ff6574;
  --r5-card-shadow: none;
  --r5-card-hover-shadow: 0 14px 32px rgba(0, 0, 0, .32);
  --r5-glow: rgba(43, 139, 255, .28);
  --r5-geo-opacity: .46;
  --r5-geo-stroke: #3f6cc8;

  --bg: var(--r5-bg);
  --panel: var(--r5-section);
  --panel-alt: var(--r5-panel);
  --ink: var(--r5-text);
  --muted: var(--r5-muted);
  --line: var(--r5-border);
  --input-bg: rgba(12, 26, 49, .88);
  --focus-bg: rgba(16, 34, 63, .94);
  --panel-bg: var(--r5-section);
  --topbar-bg: rgba(12, 26, 49, .48);
  --hero-bg: transparent;
  --onprem: #9ca8bd;
  --cloud: var(--r5-accent-2);
  --hybrid: #ffb84d;
  --danger: var(--r5-danger);
  --success: var(--r5-success);
  --info: var(--r5-accent-2);
  --warning: var(--r5-warn);
  --shadow-soft: var(--r5-card-shadow);
  --shadow-glow: 0 0 0 1px rgba(52, 194, 223, .24), 0 0 22px rgba(43, 139, 255, .20);
}

* { box-sizing: border-box; }
html { min-height: 100%; background: var(--r5-bg); }
body {
  margin: 0;
  min-height: 100vh;
  background: var(--r5-bg);
  color: var(--r5-text);
  font-family: Figtree, "IBM Plex Sans", system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  font-size: 14px;
  line-height: 1.5;
}
body::before {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -4;
  pointer-events: none;
  background: var(--r5-page);
}
body::after {
  content: "";
  position: fixed;
  inset: 0;
  z-index: -3;
  pointer-events: none;
  opacity: var(--r5-geo-opacity);
  background:
    radial-gradient(circle at 83% -12%, var(--r5-glow), transparent 34rem),
    linear-gradient(60deg, transparent 0 47.5%, color-mix(in srgb, var(--r5-geo-stroke) 45%, transparent) 48% 48.4%, transparent 49% 100%),
    linear-gradient(120deg, transparent 0 47.5%, color-mix(in srgb, var(--r5-geo-stroke) 35%, transparent) 48% 48.4%, transparent 49% 100%);
  background-size: auto, 360px 208px, 360px 208px;
  mask-image: linear-gradient(90deg, transparent 0%, black 38%, black 100%);
}
body > * { position: relative; z-index: 1; }
::selection { background: color-mix(in srgb, var(--r5-accent) 28%, transparent); }
a { color: var(--r5-accent); }
button, input, select { font: inherit; }
:focus-visible { outline: 2px solid color-mix(in srgb, var(--r5-accent) 55%, transparent); outline-offset: 2px; }

.topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  width: 100%;
  min-height: 82px;
  margin: 0;
  padding: 20px 40px;
  display: flex;
  align-items: center;
  gap: 18px;
  border-bottom: 1px solid var(--r5-border);
  background: var(--topbar-bg);
  box-shadow: none;
  backdrop-filter: blur(16px);
}
.brand-link { text-decoration: none; color: inherit; }
.brand { display: flex; align-items: center; gap: 14px; min-width: 210px; }
.brand-logo {
  width: 30px;
  height: 30px;
  border-radius: 0;
  position: relative;
  background: none;
  box-shadow: none;
  flex: 0 0 auto;
}
.brand-logo::before,
.brand-logo::after {
  content: "";
  position: absolute;
  inset: 2px;
  clip-path: polygon(50% 0, 100% 100%, 0 100%);
  background: linear-gradient(135deg, var(--r5-accent), var(--r5-accent-2) 52%, var(--r5-lime));
}
.brand-logo::after { inset: 7px 8px 6px; background: var(--r5-bg); }
.brand-title {
  font-family: Archivo, Figtree, sans-serif;
  font-size: 17px;
  line-height: 1.05;
  font-weight: 700;
  letter-spacing: .06em;
  color: var(--r5-text);
}
.brand-sub {
  display: block;
  margin-top: 2px;
  color: var(--r5-faint);
  font-size: 10px;
  letter-spacing: .20em;
}
.spacer { flex: 1; }
.nav-link,
.theme-toggle,
.internal-ribbon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  padding: 0 14px;
  border: 1px solid var(--r5-border);
  border-radius: 11px;
  color: var(--r5-muted);
  text-decoration: none;
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .08em;
  text-transform: uppercase;
  background: var(--r5-panel);
  box-shadow: none;
  cursor: pointer;
  transition: background .16s ease, color .16s ease, border-color .16s ease, transform .16s ease;
}
.nav-link:hover,
.theme-toggle:hover {
  transform: translateY(-1px);
  background: var(--r5-card-hover);
  color: var(--r5-text);
  border-color: var(--r5-border-strong);
}
.internal-ribbon {
  cursor: default;
  color: var(--r5-accent);
  background: var(--r5-accent-soft);
  border-color: transparent;
}

.shell {
  width: 100%;
  max-width: 1360px;
  min-height: calc(100vh - 82px);
  margin: 0 auto;
  padding: 42px 40px 60px;
}
.hero {
  display: flex;
  align-items: flex-end;
  justify-content: space-between;
  gap: 24px;
  margin-bottom: 28px;
  padding: 0;
  background: transparent;
  border: 0;
}
.eyebrow {
  display: inline-flex;
  margin-bottom: 8px;
  color: var(--r5-accent);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: .18em;
  text-transform: uppercase;
}
.hero h1 {
  margin: 0;
  color: var(--r5-text);
  font-family: Archivo, Figtree, sans-serif;
  font-size: clamp(32px, 4vw, 46px);
  line-height: 1.05;
  letter-spacing: -.01em;
  font-weight: 700;
}
.hero p {
  max-width: 760px;
  margin: 10px 0 0;
  color: var(--r5-muted);
  font-size: 15px;
}
.hero-stat {
  display: flex;
  gap: 10px;
  flex: 0 0 auto;
}
.hero-stat div {
  border: 1px solid var(--r5-border);
  border-radius: 999px;
  padding: 9px 16px;
  background: var(--r5-panel);
  box-shadow: var(--r5-card-shadow);
}
.hero-stat span,
.hero-stat strong {
  color: var(--r5-muted);
  font-size: 12px;
  letter-spacing: .08em;
  text-transform: uppercase;
  font-weight: 700;
}
.hero-stat span { display: none; }

.grid {
  display: grid;
  grid-template-columns: minmax(360px, 430px) minmax(0, 1fr);
  gap: 22px;
  align-items: start;
}
.panel {
  background: var(--r5-section);
  border: 1px solid var(--r5-border);
  border-radius: 18px;
  padding: 22px;
  box-shadow: var(--r5-card-shadow);
  overflow: hidden;
}
aside.panel {
  position: static;
  top: auto;
  padding: 24px;
  max-height: none;
  overflow: visible;
}
.panel h2,
.panel h3 {
  margin: 0 0 14px;
  color: var(--r5-text);
  font-family: Archivo, Figtree, sans-serif;
  font-weight: 700;
  letter-spacing: normal;
  line-height: 1.2;
}
aside.panel h2 { font-size: 20px; }
.panel h3 { font-size: 16px; }
.form-intro {
  margin: 0 0 16px;
  color: var(--r5-muted);
  font-size: 13px;
  line-height: 1.55;
}
.form-intro b { color: var(--r5-text); font-weight: 700; }
.form-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 0;
}
label {
  display: grid;
  grid-template-columns: minmax(0, 1fr) minmax(136px, 176px);
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid var(--r5-divider);
  color: var(--r5-text);
  font-size: 13px;
  line-height: 1.25;
}
label.wide { grid-column: auto; }
label small {
  grid-column: 2;
  margin-top: -8px;
  color: var(--r5-faint);
  font-size: 10.5px;
}
input,
select {
  width: 100%;
  min-height: 38px;
  border: 1px solid var(--r5-border);
  border-radius: 11px;
  background: var(--input-bg);
  color: var(--r5-text);
  padding: 8px 11px;
  outline: none;
  text-align: right;
  box-shadow: none;
}
select { text-align: left; }
input::placeholder { color: var(--r5-faint); }
input:focus,
select:focus {
  border-color: var(--r5-border-strong);
  box-shadow: var(--shadow-glow);
  background: var(--focus-bg);
}
select option { background: var(--panel); color: var(--ink); }
.check {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}
.check input { width: 18px; min-height: 18px; accent-color: var(--r5-accent); }

details {
  margin: 0;
  border: 0;
  padding: 0;
}
summary {
  list-style: none;
  cursor: pointer;
  margin: 18px 0 4px;
  color: var(--r5-accent);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: .14em;
  text-transform: uppercase;
}
summary::-webkit-details-marker { display: none; }
summary::before { content: "+"; display: inline-block; width: 14px; color: var(--r5-teal); }
details[open] summary::before { content: "–"; }
.actions { display: flex; gap: 10px; margin-top: 20px; }
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-height: 42px;
  border: 1px solid var(--r5-border);
  border-radius: 10px;
  padding: 0 16px;
  font-weight: 700;
  cursor: pointer;
  background: var(--r5-panel);
  color: var(--r5-text);
  transition: transform .16s ease, border-color .16s ease, box-shadow .16s ease, background .16s ease, filter .16s ease;
}
.btn:hover { transform: translateY(-1px); border-color: var(--r5-border-strong); box-shadow: var(--r5-card-hover-shadow); }
.btn.primary {
  border: 0;
  background: linear-gradient(135deg, var(--r5-accent-2), var(--r5-accent));
  color: #fff;
  box-shadow: 0 10px 26px color-mix(in srgb, var(--r5-accent) 22%, transparent);
}
.btn.primary:hover { filter: brightness(1.04); }
.btn.secondary { background: var(--r5-panel); color: var(--r5-text); }

#results {
  display: flex;
  flex-direction: column;
  gap: 18px;
  min-width: 0;
}
#results[hidden] { display: none; }
#answer { order: 2; }
.scenario-grid { order: 1; }
.chart-card { order: 3; }
.subgrid { order: 4; }
#results > .panel:not(.chart-card):not(.table-panel) { order: 5; }
.table-panel { order: 6; }

.answer-card {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 18px;
  padding: 22px 24px;
  border: 1px solid color-mix(in srgb, var(--r5-teal) 38%, var(--r5-border));
  border-radius: 18px;
  background:
    linear-gradient(90deg, var(--r5-teal-soft), transparent 44%),
    var(--r5-section);
  box-shadow: var(--r5-card-shadow);
  overflow: hidden;
}
.answer-card h2 { margin: 0; color: var(--r5-text); font-family: Archivo, Figtree, sans-serif; font-size: 28px; font-weight: 700; }
.answer-card p { margin: 7px 0 0; color: var(--r5-muted); font-size: 13.5px; line-height: 1.45; }
.answer-total {
  flex: none;
  text-align: right;
  color: var(--r5-text);
  font-size: 31px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -.02em;
}
.answer-total span {
  display: block;
  margin-top: 7px;
  color: var(--r5-faint);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .16em;
  text-transform: uppercase;
}

.scenario-grid {
  display: grid;
  grid-template-columns: repeat(3, minmax(0, 1fr));
  gap: 14px;
  margin: 0;
}
.scenario-card {
  position: relative;
  overflow: hidden;
  min-height: 154px;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  gap: 12px;
  padding: 18px;
  border: 1px solid var(--r5-border);
  border-radius: 16px;
  background: var(--r5-card);
  box-shadow: var(--r5-card-shadow);
  transition: transform .16s ease, border-color .16s ease, background .16s ease, box-shadow .16s ease;
}
.scenario-card:hover { transform: translateY(-2px); border-color: var(--r5-border-strong); background: var(--r5-card-hover); box-shadow: var(--r5-card-hover-shadow); }
.scenario-card::before {
  content: "";
  position: absolute;
  left: 18px;
  right: 18px;
  top: 0;
  height: 3px;
  border-radius: 0 0 999px 999px;
  background: var(--onprem);
}
.scenario-card:nth-child(1)::before { background: var(--onprem); }
.scenario-card:nth-child(2)::before { background: var(--cloud); }
.scenario-card:nth-child(3)::before { background: var(--hybrid); }
.scenario-card.winner { border-color: color-mix(in srgb, var(--r5-teal) 42%, var(--r5-border)); box-shadow: var(--shadow-glow), var(--r5-card-shadow); }
.scenario-top {
  display: flex;
  align-items: flex-start;
  justify-content: space-between;
  gap: 10px;
}
.scenario-top h3 {
  margin: 0;
  color: var(--r5-text);
  font-size: 15px;
  font-family: Archivo, Figtree, sans-serif;
  font-weight: 600;
  line-height: 1.2;
}
.scenario-top span {
  flex: 0 0 auto;
  border-radius: 5px;
  padding: 3px 6px;
  background: var(--r5-accent-soft);
  color: var(--r5-accent);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .05em;
  text-transform: uppercase;
}
.tco-metric { margin-top: 0; }
.tco-metric span { display: none; }
.tco-metric strong {
  display: block;
  color: var(--r5-text);
  font-size: 26px;
  line-height: 1;
  font-weight: 800;
  letter-spacing: -.02em;
}
.scenario-card:nth-child(1) .tco-metric:nth-of-type(2) strong { color: var(--onprem); }
.scenario-card:nth-child(2) .tco-metric:nth-of-type(2) strong { color: var(--cloud); }
.scenario-card:nth-child(3) .tco-metric:nth-of-type(2) strong { color: var(--hybrid); }
.scenario-card .tco-metric:nth-of-type(n+3),
.tco-metric em,
.scenario-card p { display: none; }

.chart-card {
  margin: 0;
  padding: 24px;
  background: var(--r5-section);
  border: 1px solid var(--r5-border);
  border-radius: 18px;
}
.chart-card h3 {
  margin-bottom: 14px;
  color: var(--r5-text);
  font-size: 16px;
  font-family: Archivo, Figtree, sans-serif;
  font-weight: 700;
  letter-spacing: normal;
  text-transform: none;
}
.chart { min-width: 0; }
.chart svg { width: 100%; height: auto; filter: none; overflow: visible; }
.chart path { stroke-width: 3; }
.chart line { stroke: var(--r5-divider); }
.chart text { fill: var(--r5-muted); font-size: 12px; font-weight: 600; }
.chart-legend { display: flex; gap: 14px; flex-wrap: wrap; margin-top: 10px; }
.chart-legend span { display: flex; gap: 8px; align-items: center; color: var(--r5-muted); font-size: 12px; font-weight: 600; }
.chart-legend i { width: 10px; height: 10px; border-radius: 3px; }

.subgrid {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 18px;
  margin: 0;
}
.warnings { margin: 0; padding-left: 18px; color: var(--r5-warn); }
.warnings li + li { margin-top: 6px; }
.bucket-card {
  display: grid;
  gap: 7px;
  padding: 13px 12px;
  border-radius: 12px;
  background: var(--r5-panel);
  border: 1px solid var(--r5-border);
  margin-bottom: 10px;
}
.bucket-card h4 { margin: 0; color: var(--r5-text); font-size: 14px; font-weight: 700; }
.bucket-card span { color: var(--r5-muted); font-size: 12px; line-height: 1.4; }
.bucket-card b { color: var(--r5-text); }
.table-panel { margin: 0; }
.export-row { display: flex; gap: 10px; justify-content: flex-end; margin-bottom: 14px; }
.table-wrap {
  overflow: auto;
  margin-bottom: 20px;
  border: 1px solid var(--r5-border);
  border-radius: 14px;
  background: var(--r5-section);
}
table { width: 100%; border-collapse: collapse; min-width: 760px; background: var(--r5-section); }
th, td { padding: 11px 12px; border-bottom: 1px solid var(--r5-divider); text-align: left; font-size: 12px; }
th { color: var(--r5-muted); background: var(--r5-panel); font-weight: 700; }
td { color: var(--r5-text); }
tbody tr:hover { background: var(--r5-row-hover); }
.footer {
  display: flex;
  justify-content: space-between;
  gap: 16px;
  margin-top: 40px;
  padding-top: 22px;
  border-top: 1px solid var(--r5-divider);
  color: var(--r5-faint);
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .12em;
}

@media (max-width: 1180px) {
  .shell { padding: 34px 28px 54px; }
  .grid { grid-template-columns: 1fr; }
  aside.panel { position: static; max-height: none; overflow: visible; }
  .scenario-grid { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}
@media (max-width: 820px) {
  .topbar { min-height: auto; padding: 16px 18px; flex-wrap: wrap; }
  .brand { min-width: auto; }
  .spacer { flex-basis: 100%; height: 0; order: 2; }
  .internal-ribbon, .theme-toggle, .nav-link { min-height: 38px; }
  .shell { padding: 28px 18px 48px; }
  .hero { display: block; }
  .hero-stat { margin-top: 14px; flex-wrap: wrap; }
  .scenario-grid, .subgrid { grid-template-columns: 1fr; }
  .answer-card { display: block; }
  .answer-total { text-align: left; margin-top: 16px; }
}
@media (max-width: 620px) {
  label { grid-template-columns: 1fr; align-items: start; }
  label small { grid-column: 1; margin-top: -4px; }
  input, select { text-align: left; }
  .actions, .export-row { flex-wrap: wrap; }
  .btn { flex: 1 1 160px; }
  .footer { flex-direction: column; }
}

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


/* Internal Alta standalone polish: tool-name header, icon-only toggle, frosted topbar, contained hero. */
.sr-only {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}
.topbar {
  min-height: 72px;
  padding: 15px 34px;
  background: var(--topbar-bg);
  backdrop-filter: blur(18px) saturate(1.12);
}
.brand { min-width: auto; }
.brand-title { font-size: 18px; letter-spacing: .02em; text-transform: none; }
.theme-toggle {
  flex: 0 0 42px;
  width: 42px;
  min-width: 42px;
  height: 42px;
  min-height: 42px;
  padding: 0;
  border-radius: 12px;
  font-size: 18px;
  letter-spacing: 0;
  text-transform: none;
}
.theme-toggle .theme-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 100%;
  height: 100%;
  margin: 0;
  line-height: 1;
}
.hero.panel {
  align-items: end;
  margin-bottom: 22px;
  padding: 24px;
  background:
    linear-gradient(135deg, var(--r5-accent-soft), transparent 46%),
    var(--r5-section);
  border: 1px solid var(--r5-border);
  box-shadow: var(--r5-card-shadow);
}
.hero-stat div { border-radius: 14px; background: var(--r5-panel); }
:root[data-theme="light"] .topbar { --topbar-bg: rgba(242, 245, 249, .82); }
:root[data-theme="light"] .brand-logo::after { background: #f2f5f9; }
@media (max-width: 820px) {
  .topbar { padding: 14px 18px; }
}


/* Alta Product standard: light workspace with deep Alta-blue anchor surfaces. */
:root,
:root[data-theme="light"] {
  --r5-bg: #e8eef5;
  --r5-page: linear-gradient(180deg, #e9f0f7 0%, #f7f9fc 34%, #e6edf5 100%);
  --r5-text: #132033;
  --r5-muted: #5d6a7c;
  --r5-muted-2: #718196;
  --r5-faint: #8997aa;
  --r5-card: rgba(255, 255, 255, .88);
  --r5-card-hover: #ffffff;
  --r5-panel: #edf3f8;
  --r5-section: rgba(255, 255, 255, .92);
  --r5-border: #cbd8e6;
  --r5-border-strong: rgba(0, 110, 215, .48);
  --r5-divider: #d7e2ed;
  --r5-chip: #e6eef7;
  --r5-row-hover: #edf4fb;
  --r5-accent: #006ed7;
  --r5-accent-2: #2b8bff;
  --r5-teal: #18a7bd;
  --r5-lime: #72b01d;
  --r5-card-shadow: 0 18px 42px rgba(25, 47, 80, .12);
  --r5-card-hover-shadow: 0 20px 52px rgba(25, 47, 80, .18);
  --input-bg: #edf3f8;
  --focus-bg: #ffffff;
  --topbar-bg: rgba(12, 26, 49, .94);
  --onprem: #66758a;
  --cloud: #006ed7;
  --hybrid: #c77d00;
}
:root[data-theme="dark"] {
  --r5-bg: #0b1422;
  --r5-page: radial-gradient(1000px 720px at 82% -12%, rgba(43, 139, 255, .28), transparent 58%),
             linear-gradient(180deg, #0f1f35 0%, #0b1422 100%);
  --r5-text: #eaf1fb;
  --r5-muted: #adbbcf;
  --r5-muted-2: #95a7c0;
  --r5-faint: #8092aa;
  --r5-card: rgba(24, 38, 59, .92);
  --r5-card-hover: rgba(31, 48, 72, .96);
  --r5-panel: rgba(21, 35, 55, .94);
  --r5-section: rgba(19, 32, 51, .94);
  --r5-border: rgba(139, 164, 205, .28);
  --r5-border-strong: rgba(54, 164, 245, .58);
  --r5-divider: rgba(139, 164, 205, .20);
  --r5-chip: rgba(54, 164, 245, .14);
  --r5-row-hover: rgba(54, 164, 245, .10);
  --r5-accent: #2b8bff;
  --r5-accent-2: #36d4f5;
  --r5-teal: #36d4f5;
  --r5-lime: #9bd84c;
  --r5-card-shadow: 0 18px 48px rgba(0, 0, 0, .26);
  --r5-card-hover-shadow: 0 20px 54px rgba(0, 0, 0, .34);
  --input-bg: rgba(7, 16, 31, .78);
  --focus-bg: rgba(11, 24, 45, .94);
  --topbar-bg: rgba(8, 18, 34, .88);
  --onprem: #a7b3c5;
  --cloud: #36d4f5;
  --hybrid: #ffbd5a;
}
.topbar {
  border-bottom-color: rgba(255, 255, 255, .10);
  box-shadow: 0 12px 32px rgba(3, 10, 22, .18);
}
:root[data-theme="light"] .topbar,
:root[data-theme="light"] .topbar .brand-title { color: #eaf1fb; }
:root[data-theme="light"] .brand-logo::after { background: #0c1a31; }
.hero.panel {
  color: #eaf1fb;
  background:
    linear-gradient(135deg, rgba(0, 110, 215, .34), transparent 54%),
    linear-gradient(180deg, #142948 0%, #0f213b 100%);
  border-color: rgba(96, 137, 198, .38);
  box-shadow: 0 22px 58px rgba(15, 33, 59, .26);
}
.hero.panel h1,
.hero.panel .eyebrow { color: #ffffff; }
.hero.panel p { color: #b8c8df; }
.hero-stat div { background: rgba(255,255,255,.08); border-color: rgba(255,255,255,.18); }
.hero-stat strong { color: #dbe8f8; }
.answer-card {
  color: #eaf1fb;
  background:
    linear-gradient(90deg, rgba(43, 139, 255, .20), transparent 48%),
    linear-gradient(180deg, #142948 0%, #10233f 100%);
  border-color: rgba(54, 212, 245, .36);
  box-shadow: 0 20px 54px rgba(15, 33, 59, .22);
}
.answer-card h2,
.answer-card .answer-total { color: #ffffff; }
.answer-card p { color: #b8c8df; }
:root[data-theme="light"] .scenario-card.winner { background: #f8fbff; }
:root[data-theme="light"] .panel:not(.chart-card):not(.table-panel) { box-shadow: 0 18px 44px rgba(25, 47, 80, .10); }
:root[data-theme="dark"] .brand-logo::after { background: #0b1422; }


/* Final TCO standard: light-only approved product skin. Dark toggle removed. */
:root[data-theme="dark"] {
  --r5-bg: #e8eef5;
  --r5-page: linear-gradient(180deg, #e9f0f7 0%, #f7f9fc 34%, #e6edf5 100%);
  --r5-text: #132033;
  --r5-muted: #5d6a7c;
  --r5-muted-2: #718196;
  --r5-faint: #8997aa;
  --r5-card: rgba(255, 255, 255, .88);
  --r5-card-hover: #ffffff;
  --r5-panel: #edf3f8;
  --r5-section: rgba(255, 255, 255, .92);
  --r5-border: #cbd8e6;
  --r5-border-strong: rgba(0, 110, 215, .48);
  --r5-divider: #d7e2ed;
  --r5-chip: #e6eef7;
  --r5-row-hover: #edf4fb;
  --r5-accent: #006ed7;
  --r5-accent-2: #2b8bff;
  --r5-teal: #18a7bd;
  --r5-lime: #72b01d;
  --r5-card-shadow: 0 18px 42px rgba(25, 47, 80, .12);
  --r5-card-hover-shadow: 0 20px 52px rgba(25, 47, 80, .18);
  --input-bg: #edf3f8;
  --focus-bg: #ffffff;
  --topbar-bg: rgba(12, 26, 49, .94);
  --onprem: #66758a;
  --cloud: #006ed7;
  --hybrid: #c77d00;
}
.topbar .spacer { flex: 1; }
:root[data-theme="light"] .topbar,
:root[data-theme="dark"] .topbar {
  background: rgba(12, 26, 49, .94);
  border-bottom-color: rgba(255, 255, 255, .10);
}
:root[data-theme="light"] .topbar .brand-title,
:root[data-theme="dark"] .topbar .brand-title { color: #eaf1fb; }
:root[data-theme="light"] .brand-logo::after,
:root[data-theme="dark"] .brand-logo::after { background: #0c1a31; }