:root,
:root[data-bt-theme="light"] {
  --b11-bg: #eef4fa;
  --b11-shell: #f8fbfe;
  --b11-surface: #ffffff;
  --b11-surface-2: #f4f8fc;
  --b11-control: #ffffff;
  --b11-control-hover: #f7fbff;
  --b11-text: #10253b;
  --b11-muted: #536a80;
  --b11-placeholder: #71869a;
  --b11-line: #bccddd;
  --b11-accent: #197de8;
  --b11-cyan: #43d2e4;
  --b11-shadow: 0 10px 28px rgba(17, 46, 74, .09);
}

:root[data-bt-theme="dark"] {
  --b11-bg: #061424;
  --b11-shell: #08192b;
  --b11-surface: #0b1d31;
  --b11-surface-2: #10253b;
  --b11-control: #10243a;
  --b11-control-hover: #142c46;
  --b11-text: #f1f6fb;
  --b11-muted: #aebfd0;
  --b11-placeholder: #8fa4b7;
  --b11-line: #31506c;
  --b11-accent: #3c9cff;
  --b11-cyan: #4bd8e7;
  --b11-shadow: 0 12px 34px rgba(0, 6, 14, .32);
}

html { font-size: 15px; }
body { color: var(--b11-text); background: var(--b11-bg); font-size: 1rem; line-height: 1.48; }
h1 { font-size: clamp(1.85rem, 3vw, 2.15rem); line-height: 1.12; }
h2 { font-size: clamp(1.35rem, 2.2vw, 1.6rem); line-height: 1.2; }
h3 { font-size: 1.18rem; line-height: 1.25; }
.small, small, .field label, legend { font-size: .88rem; }
.wrap { max-width: 1280px; padding: 18px; }
.grid { gap: 14px !important; }
:root.release-3-premium[data-bt-theme] .card { padding: clamp(14px, 1.7vw, 20px); border-radius: 15px; }

/* Compact app shell with the approved blue/cyan active state. */
.top { color: var(--b11-text) !important; background: color-mix(in srgb, var(--b11-shell) 94%, transparent) !important; border-bottom: 1px solid var(--b11-line) !important; box-shadow: 0 5px 18px rgba(3, 20, 36, .1) !important; }
.topin { max-width: 1280px; padding: 9px 18px; }
.brand { font-size: 1.08rem; gap: 9px; }
.brand-logo { width: 34px; height: 34px; border-radius: 9px; border: 1px solid var(--b11-line); }
.version { font-size: .66rem; }
.global-rating { min-width: 250px; width: clamp(250px, 27vw, 355px); padding: 8px 11px; border-radius: 11px; }
.section-tabs { position: sticky; top: 63px; z-index: 8; gap: 4px !important; padding: 5px !important; margin-bottom: 14px !important; border: 1px solid var(--b11-line) !important; border-radius: 12px !important; background: color-mix(in srgb, var(--b11-shell) 94%, transparent) !important; box-shadow: var(--b11-shadow) !important; }
.section-tabs .btn { min-height: 38px !important; padding: 8px 11px !important; color: var(--b11-muted) !important; background: transparent !important; border-radius: 8px !important; font-size: .93rem; }
.section-tabs .btn.active { color: #fff !important; background: linear-gradient(105deg, var(--b11-accent), var(--b11-cyan)) !important; border-color: transparent !important; }
.section-tabs .btn { display: inline-flex; align-items: center; gap: 7px; }
.bt-nav-icon { width: 17px; height: 17px; flex: 0 0 auto; fill: none; stroke: currentColor; stroke-width: 1.75; stroke-linecap: round; stroke-linejoin: round; }
.btn { min-height: 40px !important; padding: 8px 13px !important; font-size: .93rem; border-radius: 9px !important; }

/* One semantic control system for both themes and all browser states. */
:root.release-3-premium[data-bt-theme] :is(input:not([type="checkbox"]):not([type="radio"]):not([type="range"]):not([type="file"]), select, textarea, .bt-combobox-trigger, .bt-multi-search) {
  min-height: 42px;
  padding: 9px 12px;
  color: var(--b11-text) !important;
  -webkit-text-fill-color: var(--b11-text) !important;
  caret-color: var(--b11-accent);
  background: var(--b11-control) !important;
  border: 1px solid var(--b11-line) !important;
  border-radius: 9px !important;
  box-shadow: none !important;
  font: inherit;
  font-size: .95rem;
}
:root.release-3-premium[data-bt-theme] :is(input, select, textarea):hover { background: var(--b11-control-hover) !important; border-color: color-mix(in srgb, var(--b11-accent) 40%, var(--b11-line)) !important; }
:root.release-3-premium[data-bt-theme] :is(input, select, textarea):focus,
.bt-combobox-trigger:focus-visible { outline: 3px solid color-mix(in srgb, var(--b11-accent) 25%, transparent) !important; outline-offset: 1px; border-color: var(--b11-accent) !important; }
:root.release-3-premium[data-bt-theme] :is(input, textarea)::placeholder { color: var(--b11-placeholder) !important; -webkit-text-fill-color: var(--b11-placeholder) !important; opacity: 1; }
:root.release-3-premium[data-bt-theme] :is(input, select, textarea):disabled,
:root.release-3-premium[data-bt-theme] :is(input, select, textarea)[readonly] { color: var(--b11-muted) !important; -webkit-text-fill-color: var(--b11-muted) !important; background: var(--b11-surface-2) !important; opacity: .82; }
:root.release-3-premium[data-bt-theme] :is(input, select, textarea)[aria-invalid="true"],
:root.release-3-premium[data-bt-theme] :is(input, select, textarea).is-error { border-color: var(--bt-danger, #dc3545) !important; }
:root.release-3-premium[data-bt-theme] :is(input, select, textarea).is-success { border-color: var(--bt-success, #18864b) !important; }
:root.release-3-premium[data-bt-theme] :is(input, textarea):-webkit-autofill,
:root.release-3-premium[data-bt-theme] :is(input, textarea):-webkit-autofill:hover,
:root.release-3-premium[data-bt-theme] :is(input, textarea):-webkit-autofill:focus { -webkit-text-fill-color: var(--b11-text) !important; box-shadow: 0 0 0 1000px var(--b11-control) inset !important; caret-color: var(--b11-text); }
select option { color: var(--b11-text); background: var(--b11-control); }
.field { margin: 0 0 12px; }
.field label { margin-bottom: 5px; color: var(--b11-text) !important; font-weight: 750; }
textarea { min-height: 82px; }
.login .card { width: min(430px, 100%); padding: 26px !important; }
.login .field input { width: 100%; }

/* Approved compact 4 + 3 skill grid. */
.score-layout.bt-skill-grid-shell { gap: 15px; margin-top: 14px; }
.bt-score-overview { min-height: 126px; padding: 20px 26px; gap: 12px 20px; border-radius: 16px; box-shadow: var(--b11-shadow); }
.bt-score-label { font-size: .75rem; }
.bt-score-level { margin-top: 8px; padding: 5px 9px; }
.bt-score-value { font-size: clamp(2.65rem, 5vw, 3.35rem); }
.bt-score-progress { height: 9px; }
.bt-skill-grid { gap: 14px; }
.bt-skill-card { min-height: 198px; padding: 16px 14px 13px; border-radius: 14px; box-shadow: var(--b11-shadow); }
.bt-skill-icon { min-height: 31px; font-size: 1.55rem; }
.bt-skill-name { min-height: 31px; margin-top: 5px; font-size: .74rem; }
.bt-skill-value { margin: 8px 0 11px; font-size: clamp(2.35rem, 3.2vw, 2.85rem); }
.bt-skill-progress { height: 6px; }
.bt-skill-meta { margin-top: 12px; font-size: .69rem; }

/* Progress Analytics: one integrated hierarchy surface, no four autonomous cards. */
.bt-progress-analytics { padding: 0 !important; overflow: hidden; }
.bt-progress-heading { display: flex; justify-content: space-between; gap: 18px; align-items: start; padding: 18px 20px 12px; }
.bt-progress-heading h3 { margin: 0 0 5px; }
.bt-progress-badges { display: flex; flex-wrap: wrap; gap: 5px; margin-top: 7px; }
.bt-progress-period { flex: 0 0 auto; padding: 7px 10px; color: var(--b11-muted); background: var(--b11-surface-2); border: 1px solid var(--b11-line); border-radius: 8px; font-size: .82rem; }
.bt-progress-summary { display: grid; grid-template-columns: 1.35fr repeat(3, minmax(0, 1fr)); margin: 0 20px; padding: 18px 0; border: 1px solid var(--b11-line); border-inline: 0; }
.bt-progress-summary > div { min-width: 0; padding: 0 20px; border-left: 1px solid var(--b11-line); }
.bt-progress-summary > div:first-child { padding-left: 0; border-left: 0; }
.bt-progress-summary span { display: block; color: var(--b11-muted); font-size: .78rem; letter-spacing: .035em; text-transform: uppercase; }
.bt-progress-primary strong { display: block; margin-top: 3px; font-size: clamp(2.45rem, 4vw, 3.1rem); line-height: 1; }
.bt-progress-secondary strong { display: block; margin-top: 11px; color: var(--b11-accent); font-size: clamp(1.45rem, 2.6vw, 2rem); line-height: 1.05; }
.bt-progress-secondary small { color: var(--b11-muted); font-size: .46em; font-weight: 600; }
.bt-progress-chart { padding: 16px 20px 20px; }
.bt-progress-chart-head { display: flex; justify-content: space-between; align-items: end; margin-bottom: 8px; }
.bt-progress-chart h4 { margin: 0 0 2px; font-size: 1.05rem; }
.bt-progress-chart .chart-wrap { height: 225px; margin-top: 0 !important; overflow: hidden; }
.bt-progress-chart .chart-wrap svg { min-width: 0 !important; width: 100%; height: 100%; }

/* Compact exercise editor and accordions. */
[data-app-panel="coach-exercises"] { position: relative; }
[data-app-panel="coach-exercises"] > .field,
[data-app-panel="coach-exercises"] > .form-two-cols,
[data-app-panel="coach-exercises"] > details,
[data-app-panel="coach-exercises"] > .kg-editor,
[data-app-panel="coach-exercises"] > .notice,
[data-app-panel="coach-exercises"] > label { max-width: 980px; margin-inline: auto; }
.form-two-cols { gap: 12px 16px; }
.kg-editor { max-width: 980px; }
.kg-editor details, details.structured-content { margin: 7px 0; background: var(--b11-surface-2) !important; border-color: var(--b11-line) !important; border-radius: 10px !important; }
.kg-editor summary, details.structured-content summary { padding: 10px 12px !important; font-size: .94rem; }
.kg-editor .kg-body, details.structured-content .kg-body { padding: 0 12px 12px !important; }
[data-app-panel="coach-exercises"] > .actions { position: sticky; bottom: 10px; z-index: 7; justify-content: flex-end; max-width: 980px; margin: 14px auto 0; padding: 10px; background: color-mix(in srgb, var(--b11-shell) 94%, transparent); border: 1px solid var(--b11-line); border-radius: 11px; box-shadow: var(--b11-shadow); backdrop-filter: blur(12px); }

/* Searchable multi-select popover; never expands all 49 options in document flow. */
.bt-multi { position: relative; display: grid; gap: 7px; }
.bt-combobox-trigger { display: flex; align-items: center; justify-content: space-between; gap: 8px; width: 100%; cursor: pointer; text-align: left; }
.bt-combobox-trigger::after { content: "⌄"; color: var(--b11-accent); }
.bt-multi-chips { display: flex; flex-wrap: wrap; gap: 5px; min-height: 0; }
.bt-multi-chip { display: inline-flex; align-items: center; gap: 5px; max-width: 100%; padding: 4px 8px; color: var(--b11-text); background: var(--b11-surface-2); border: 1px solid var(--b11-line); border-radius: 7px; font-size: .78rem; }
.bt-multi-chip button { appearance: none; border: 0; padding: 0; color: var(--b11-muted); background: transparent; cursor: pointer; }
.bt-multi-popover { position: absolute; z-index: 40; inset: calc(100% + 6px) 0 auto; display: none; max-height: 320px; overflow: hidden; padding: 8px; background: var(--b11-surface); border: 1px solid var(--b11-line); border-radius: 10px; box-shadow: 0 18px 44px rgba(0, 7, 18, .3); }
.bt-multi.is-open .bt-multi-popover { display: grid; gap: 7px; }
.bt-multi-options { display: grid; grid-template-columns: 1fr; gap: 2px; max-height: 240px; overflow-y: auto; padding: 0; background: transparent; border: 0; border-radius: 0; }
.bt-multi-option { min-height: 40px; padding: 7px 8px; border-radius: 7px; }
.bt-multi-option input { width: 18px; height: 18px; accent-color: var(--b11-accent); }
.bt-multi-option:focus-within, .bt-multi-option:hover { background: var(--b11-surface-2); }
.bt-multi-counter { color: var(--b11-muted); font-size: .78rem; }
.bt-multi + select { position: absolute !important; width: 1px !important; height: 1px !important; opacity: 0 !important; pointer-events: none !important; }

@media (max-width: 900px) {
  .topin { gap: 8px; }
  .header-actions { width: 100%; }
  .section-tabs { top: 98px; }
  .bt-skill-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); gap: 10px; }
  .bt-skill-card, .bt-skill-card:nth-child(n) { grid-column: auto; min-height: 176px; }
  .bt-skill-card:last-child { grid-column: 1 / -1; }
  .bt-progress-summary { grid-template-columns: repeat(3, 1fr); }
  .bt-progress-primary { grid-column: 1 / -1; padding: 0 0 14px !important; margin-bottom: 14px; border-bottom: 1px solid var(--b11-line); }
  .bt-progress-summary > .bt-progress-secondary:first-of-type { border-left: 0; padding-left: 0; }
}

@media (max-width: 520px) {
  html { font-size: 14px; }
  .wrap { padding: 10px; }
  .topin { padding: 7px 10px; }
  .brand { font-size: .96rem; }
  .version { display: none; }
  .section-tabs { top: 110px; margin-inline: 0 !important; }
  .bt-score-overview { min-height: 108px; padding: 15px; }
  .bt-score-value { font-size: 2.6rem; }
  .bt-skill-card, .bt-skill-card:nth-child(n) { min-height: 158px; padding: 12px 8px 10px; }
  .bt-skill-card:last-child { min-height: 144px; }
  .bt-skill-value { font-size: 2.15rem; }
  .bt-progress-heading { padding: 14px; }
  .bt-progress-summary { margin: 0 14px; grid-template-columns: 1fr 1fr; }
  .bt-progress-primary { grid-column: 1 / -1; }
  .bt-progress-secondary { padding: 0 10px !important; }
  .bt-progress-secondary:last-child { grid-column: 1 / -1; padding-top: 13px !important; margin-top: 13px; border-top: 1px solid var(--b11-line); border-left: 0; }
  .bt-progress-chart { padding: 14px; }
  .bt-progress-chart .chart-wrap { height: 205px; overflow: hidden; }
  .form-two-cols { grid-template-columns: 1fr; }
  .bt-multi-popover { position: fixed; inset: auto 8px 8px; max-height: min(76dvh, 560px); padding: 12px; border-radius: 15px; }
  .bt-multi-options { max-height: calc(min(76dvh, 560px) - 82px); }
}