/* Aquaflow Public UI – Core tokens + shared components
   - Core tokens: always present
   - Brand tokens: optional tenant overrides
   - Presets: clean|premium via [data-preset]
*/

:root {
  /* =============================
     CORE TOKENS (always present)
     ============================= */

  /* Typography */
  --font-sans: ui-sans-serif, system-ui, -apple-system, "Segoe UI", Roboto, Helvetica, Arial, "Apple Color Emoji",
    "Segoe UI Emoji", "Segoe UI Symbol";
  --font-weight-regular: 400;
  --font-weight-medium: 500;
  --font-weight-semibold: 600;
  --font-weight-bold: 700;
  --font-weight-extrabold: 800;

  /* Type scale */
  --fs-0: 0.8125rem; /* 13 */
  --fs-1: 0.875rem;  /* 14 */
  --fs-2: 1rem;      /* 16 */
  --fs-3: 1.125rem;  /* 18 */
  --fs-4: 1.375rem;  /* 22 */
  --fs-5: 1.75rem;   /* 28 */
  --fs-6: 2.25rem;   /* 36 */

  /* Spacing scale */
  --sp-0: 0;
  --sp-1: 0.25rem;
  --sp-2: 0.5rem;
  --sp-3: 0.75rem;
  --sp-4: 1rem;
  --sp-5: 1.25rem;
  --sp-6: 1.5rem;
  --sp-7: 2rem;
  --sp-8: 2.5rem;
  --sp-9: 3rem;

  /* Container */
  --container-max: 1100px;
  --container-pad: 20px;

  /* Radius & shadows */
  --radius-1: 10px;
  --radius-2: 16px;
  --radius-3: 24px;
  --shadow-1: 0 10px 24px rgba(0, 0, 0, 0.08);
  --shadow-2: 0 16px 34px rgba(0, 0, 0, 0.12);

  /* SaaS token aliases (Phase 2 foundation)
     - Keep existing --sp/--radius/--shadow stable
     - Provide --s/--r/--sh for future component refactors
  */
  --s-1: var(--sp-1);
  --s-2: var(--sp-2);
  --s-3: var(--sp-3);
  --s-4: var(--sp-4);
  --s-5: var(--sp-5);
  --s-6: var(--sp-6);
  --s-7: var(--sp-7);
  --s-8: var(--sp-8);
  --r-1: var(--radius-1);
  --r-2: var(--radius-2);
  --r-3: var(--radius-3);
  --sh-1: var(--shadow-1);

  /* Focus */
  --focus-ring: 0 0 0 3px color-mix(in srgb, var(--brand-primary) 30%, transparent);

  /* Neutrals */
  --c-bg: #f6fbfa;
  --c-surface: #ffffff;
  --c-text: #0b1220;
  --c-muted: rgba(11, 18, 32, 0.72);
  --c-line: rgba(0, 0, 0, 0.10);

    /* Status colors (soft defaults; tenant override allowed)
      Used for availability badges (ok/warn/urgent/full).
    */
    --c-status-ok: #2b7a3d;      /* green */
    --c-status-warn: #b08900;    /* yellow */
    --c-status-urgent: #c05500;  /* orange */
    --c-status-full: #b00020;    /* red */

  /* =============================
     BRAND TOKENS (tenant overrides)
     ============================= */
    /* Brand token API (tenant override allowed)
      - Keep these neutral (Aquaflow core), not tenant-specific.
      - Tenants can override via theme layer or DesignSystem mapping.
    */
    --brand-primary: #8fe3c5;
    --brand-accent: #007f6d;
    --brand-on-primary: #0b1220;

    /* Token API v1 (Font)
      - Canonical: --font-ui (tenant override)
    */
    --font-ui: var(--font-sans);

    /* Legacy alias tokens (internal compatibility) */
    --tenant-primary: var(--brand-primary);
    --tenant-accent: var(--brand-accent);

     /* =============================
       ROLE TOKENS (UI modes)
       ============================= */
     --role-accent: #13544a;
     --role-bg-soft: var(--c-bg);
     --role-text-muted: var(--c-muted);

}

/* Role overrides (applied via <body class="role-...">) */
body.role-instructor {
  --role-accent: #13544a;
  --role-bg-soft: color-mix(in srgb, #13544a 6%, var(--c-bg));
  --role-text-muted: var(--c-muted);
}

body.role-parent {
  --role-accent: #0a8f84;
  --role-bg-soft: color-mix(in srgb, var(--brand-primary) 18%, var(--c-bg));
  --role-text-muted: color-mix(in srgb, var(--c-muted) 88%, var(--role-accent) 12%);
}

body.role-admin {
  --role-accent: #103b73;
  --role-bg-soft: color-mix(in srgb, #103b73 5%, var(--c-bg));
  --role-text-muted: color-mix(in srgb, var(--c-muted) 90%, #103b73 10%);
}

body.role-board {
  --role-accent: #3f4a57;
  --role-bg-soft: color-mix(in srgb, #3f4a57 5%, var(--c-bg));
  --role-text-muted: var(--c-muted);
}

/* =============================
   PRESET TOKENS
   ============================= */

html[data-tier="premium"],
body[data-tier="premium"],
html[data-preset="premium"],
body[data-preset="premium"] {
  --radius-1: 12px;
  --radius-2: 18px;
  --radius-3: 28px;
  --shadow-1: 0 12px 30px rgba(20, 40, 60, 0.12);
  --shadow-2: 0 18px 40px rgba(10, 20, 30, 0.14);
  --sp-7: 2.25rem;
  --sp-8: 3rem;
  --sp-9: 3.5rem;
}

/* =============================
   BASE
   ============================= */

* { box-sizing: border-box; }
html, body {
  height: 100%;
  font-family: var(--font-ui);
}

/* =============================
   WORKBENCH SHELL (single scroll area below header)
   Reused by Instructor (reference) and aligned surfaces.
   ============================= */

body.is-workbench-shell {
  height: 100vh;
  overflow: hidden;
}

body.is-workbench-shell .ui-page.main-content {
  height: calc(100vh - var(--appbar-h, 64px));
  padding: 0;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  min-height: 0;
}

body.is-workbench-shell .ui-footer {
  display: none;
}

.workbench-root {
  display: flex;
  flex-direction: column;
  min-height: 0;
  flex: 1 1 auto;
}

.workbench-scroll {
  flex: 1 1 auto;
  min-height: 0;
  overflow: auto;
  -webkit-overflow-scrolling: touch;
}

/* Header stack: static in the non-scrolling shell */
body.is-workbench-shell .teachbar,
body.is-workbench-shell .switcher {
  position: static;
  top: auto;
}

/* Sticky inside scroll-container: do not offset by global app/header heights */
body.is-workbench-shell .goal-header {
  top: 0;
}

/* Workbench tabs/panels (Instructor reference) */
body.is-workbench-shell .panel {
  display: none;
}

body.is-workbench-shell .panel.is-active {
  display: block;
}

body.is-workbench-shell .panel > article {
  margin-top: 0;
}

body {
  margin: 0;
  background: var(--c-bg);
  color: var(--c-text);
  font-family: inherit;
  font-weight: var(--font-weight-regular);
  line-height: 1.5;
}

button, input, select, textarea {
  font: inherit;
  color: inherit;
}

a { color: inherit; }

/* Accessibility helpers */
.sr-only {
  position: absolute !important;
  width: 1px !important;
  height: 1px !important;
  padding: 0 !important;
  margin: -1px !important;
  overflow: hidden !important;
  clip: rect(0, 0, 0, 0) !important;
  white-space: nowrap !important;
  border: 0 !important;
}

/* =============================
   APP SHELL HEADER (strict single row)
   ============================= */

.app-shell-header {
  position: sticky;
  top: 0;
  z-index: 50;
  height: 64px !important;
  min-height: 64px !important;
  max-height: 64px !important;
  width: 100% !important;
  display: grid !important;
  grid-template-columns: auto 1fr auto !important;
  align-items: center !important;
  padding: 0 16px !important;
  background: var(--role-accent) !important;
  color: #fff !important;
  overflow: hidden !important;
}

.app-shell-titlewrap {
  justify-self: center;
  min-width: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
}

.app-shell-logo {
  display: inline-flex;
  align-items: center;
  justify-content: flex-start;
  text-decoration: none;
  color: inherit;
  line-height: 1;
}

.app-shell-logo img {
  display: block !important;
  height: 24px !important;
  width: auto !important;
  max-height: 24px !important;
  max-width: none !important;
  margin: 0 !important;
  object-fit: contain;
}

.app-shell-title {
  color: #fff;
  font-size: 16px;
  font-weight: 600;
  text-decoration: none;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
}

.app-shell-subtitle {
  font-size: 12px;
  font-weight: 700;
  line-height: 1;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 100%;
  color: rgba(255, 255, 255, 0.82);
}

body.role-instructor .app-shell-title { font-weight: 800; }
body.role-parent .app-shell-title { font-weight: 700; }
body.role-admin .app-shell-title { font-weight: 700; }
body.role-board .app-shell-title { font-weight: 650; }

.app-shell-action {
  width: 36px;
  height: 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  background: rgba(255, 255, 255, 0.10);
  border: none;
  padding: 0;
  border-radius: 999px;
  color: inherit;
  cursor: pointer;
}

.app-shell-action:hover {
  background: rgba(255, 255, 255, 0.20);
}

.app-shell-action:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
}

.app-shell-action img {
  width: 20px;
  height: 20px;
  display: block;
}

.u-container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--container-pad);
}

.ui-page {
  padding: var(--sp-7) 0 var(--sp-9);
}

/* App-shell pages: tighter spacing below the app header */
.main-content {
  padding-top: 12px;
  display: flow-root; /* prevent margin-collapsing from first child */
}

.main-content > *:first-child {
  margin-top: 0 !important;
}

.ui-section {
  padding: var(--sp-8) 0;
}

.ui-section--surface {
  background: var(--c-surface);
  border-top: 1px solid color-mix(in srgb, var(--c-line) 55%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--c-line) 55%, transparent);
}

.ui-section[id] {
  scroll-margin-top: calc(var(--sp-9) + var(--sp-4));
}

.ui-section--tight {
  padding: var(--sp-7) 0;
}

.ui-title {
  margin: 0 0 var(--sp-3);
  font-size: var(--fs-6);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
}

.ui-subtitle {
  margin: 0;
  color: var(--c-muted);
}

.ui-subtitle--onbrand {
  color: rgba(255,255,255,0.88);
}

.ui-lead {
  margin: 0 0 var(--sp-5);
  color: var(--c-muted);
}

/* =============================
   HEADER
   ============================= */

.ui-header {
  position: sticky;
  top: 0;
  z-index: 30;
  background: color-mix(in srgb, var(--brand-primary) 92%, #ffffff 8%);
  border-bottom: 1px solid color-mix(in srgb, var(--brand-primary) 55%, transparent);
}

.ui-header__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--container-pad);
}

.ui-nav {
  display: flex;
  align-items: center;
  gap: var(--sp-4);
}

.ui-nav__link {
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--fs-1);
  color: inherit;
  opacity: 0.9;
}

.ui-nav__link:hover {
  opacity: 1;
  text-decoration: underline;
  text-underline-offset: 4px;
}

.ui-brand {
  display: inline-flex;
  align-items: center;
  gap: var(--sp-3);
  text-decoration: none;
}

/* App header (Instructor/operational shell) */
.ui-appbar {
  position: sticky;
  top: 0;
  z-index: 50;
  background: #13544a;
  color: #fff;
  border-bottom: 1px solid rgba(255, 255, 255, 0.12);
  height: 64px;
  min-height: 64px;
  max-height: 64px;
  overflow: hidden; /* never grow with content */
}

.ui-appbar__inner {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
  position: relative;
  height: 64px;
  padding: 0 var(--sp-4);
  width: 100%;
}

.ui-appbar__left {
  display: flex;
  align-items: center;
  gap: 10px;
  min-width: 0;
  flex: 0 0 auto;
}

.ui-appbar__center {
  position: absolute;
  left: 50%;
  top: 50%;
  transform: translate(-50%, -50%);
  max-width: calc(100% - 160px);
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  pointer-events: auto;
}

.ui-appbar__right {
  display: flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
}

.ui-appbar__brand {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  text-decoration: none;
  color: inherit;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 0.2px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  line-height: 1;
  flex: 0 0 auto;
}

.ui-appbar__brand:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.18);
}

.ui-appbar__brand:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
}

.ui-appbar__logo {
  height: 28px;
  width: auto;
  max-height: 28px;
  display: block;
  margin: 0;
}

.ui-appbar__center-link {
  display: inline-block;
  text-decoration: none;
  color: inherit;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1px;
  line-height: 1;
  opacity: 0.98;
}

.ui-appbar__center-link:hover {
  text-decoration: none;
  opacity: 1;
}

.ui-appbar__center-link:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.ui-appbar__center-link.is-active {
  font-weight: var(--font-weight-bold);
}

/* Backwards compat: older templates used .ui-appbar__nav */
.ui-appbar__nav {
  display: inline-block;
  text-decoration: none;
  color: inherit;
  font-weight: var(--font-weight-semibold);
  letter-spacing: 0.1px;
  line-height: 1;
  opacity: 0.98;
}

.ui-appbar__nav:hover {
  text-decoration: none;
  opacity: 1;
}

.ui-appbar__nav:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
  border-radius: 8px;
}

.ui-appbar__nav.is-active {
  font-weight: var(--font-weight-bold);
}

.ui-appbar__profile {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 999px;
  text-decoration: none;
  color: inherit;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid rgba(255, 255, 255, 0.14);
  line-height: 1;
}

.ui-appbar__profile:hover {
  background: rgba(255, 255, 255, 0.10);
  border-color: rgba(255, 255, 255, 0.18);
}

.ui-appbar__profile:focus-visible {
  outline: none;
  box-shadow: 0 0 0 3px rgba(255, 255, 255, 0.22);
}

.ui-appbar__profile-icon {
  width: 18px;
  height: 18px;
  display: block;
}

.ui-appbar__link {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 6px 10px;
  border-radius: 999px;
  text-decoration: none;
  color: inherit;
  font-weight: var(--font-weight-bold);
  font-size: 13px;
  background: transparent;
  border: 1px solid transparent;
  opacity: 0.92;
}

.ui-appbar__link:hover {
  opacity: 1;
  background: rgba(255, 255, 255, 0.08);
  border-color: rgba(255, 255, 255, 0.14);
}

.ui-appbar__link.is-active {
  background: rgba(255, 255, 255, 0.14);
  border-color: rgba(255, 255, 255, 0.20);
}

.ui-brand__logo {
  height: 40px;
  width: auto;
  display: block;
}

.ui-brand__name {
  font-weight: var(--font-weight-extrabold);
}

.ui-lang select {
  appearance: none;
  -webkit-appearance: none;
  padding: 8px 12px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--c-line) 85%, transparent);
  background: var(--c-surface);
  color: var(--c-text);
  font-weight: var(--font-weight-bold);
  font-size: var(--fs-1);
}

.ui-lang select:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

/* =============================
   HERO
   ============================= */

.ui-hero {
  position: relative;
  border-radius: var(--radius-3);
  overflow: hidden;
  color: #fff;
  background: color-mix(in srgb, var(--c-text) 78%, var(--brand-primary) 22%);
  box-shadow: var(--shadow-2);
}

.ui-hero--image {
  background-size: cover;
  background-position: center;
}

.ui-hero__media {
  position: absolute;
  inset: 0;
  width: 100%;
  height: 100%;
  object-fit: cover;
  object-position: center;
  opacity: 0.46;
  filter: saturate(1.06) brightness(1.06);
  transform: scale(1.03);
  z-index: 0;
}

.ui-hero__inner {
  position: relative;
  z-index: 1;
  padding: var(--sp-9) var(--sp-8) var(--sp-8);
  min-height: 320px;
  display: flex;
  align-items: flex-end;
}

.ui-hero--no-image .ui-hero__inner {
  background: radial-gradient(circle at 20% 20%, #144566, #0b1a2b 60%);
}

.ui-hero__inner::before {
  content: "";
  position: absolute;
  inset: 0;
  background: linear-gradient(
    180deg,
    color-mix(in srgb, var(--c-text) 10%, transparent),
    color-mix(in srgb, var(--c-text) 52%, transparent)
  );
  z-index: 0;
}

.ui-hero__content { position: relative; z-index: 1; max-width: 720px; }

.ui-eyebrow {
  margin: 0 0 var(--sp-3);
  font-size: 0.75rem;
  letter-spacing: 0.22em;
  text-transform: uppercase;
  opacity: 0.85;
  font-weight: var(--font-weight-medium);
}

.ui-hero__title {
  margin: 0 0 var(--sp-3);
  font-size: clamp(2rem, 3.2vw, 2.75rem);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.02em;
  text-shadow: 0 2px 14px color-mix(in srgb, var(--c-text) 55%, transparent);
}

.ui-hero__text {
  margin: 0 0 var(--sp-5);
  opacity: 0.92;
  text-shadow: 0 2px 12px color-mix(in srgb, var(--c-text) 45%, transparent);
}

html[data-tier="premium"] .ui-hero__inner,
body[data-tier="premium"] .ui-hero__inner,
html[data-preset="premium"] .ui-hero__inner,
body[data-preset="premium"] .ui-hero__inner {
  padding: calc(var(--sp-9) + var(--sp-3)) var(--sp-9) var(--sp-8);
  min-height: 360px;
}

/* =============================
   SMALL UTILITIES (Phase 3.1)
   ============================= */

/* Spacing utilities (Premium polish, minimal) */
.u-mt-3 { margin-top: var(--sp-3); }
.u-mt-4 { margin-top: var(--sp-4); }
.u-mt-5 { margin-top: var(--sp-5); }
.u-mt-6 { margin-top: var(--sp-6); }
.u-mb-3 { margin-bottom: var(--sp-3); }
.u-mb-6 { margin-bottom: var(--sp-6); }
.u-gap-3 { gap: var(--sp-3); }
.u-gap-5 { gap: var(--sp-5); }
.u-stack { display: grid; gap: var(--sp-5); }
.u-stack--loose { gap: var(--sp-6); }

.ui-mt-3 { margin-top: var(--sp-3); }
.ui-mt-5 { margin-top: var(--sp-5); }
.ui-mt-6 { margin-top: var(--sp-6); }
.ui-mb-6 { margin-bottom: var(--sp-6); }
.ui-maxw-640 { max-width: 640px; }

.ui-vstack {
  display: grid;
  gap: var(--sp-5);
}

.ui-vstack--mt-6 {
  margin-top: var(--sp-6);
}

.ui-vstack--loose {
  gap: var(--sp-6);
}

.ui-text-inverse { color: #fff; }

/* Card variants used inside on-brand sections */
.ui-card--glass {
  background: rgba(255,255,255,0.14);
  border-color: rgba(255,255,255,0.18);
}

.ui-card--accent-left {
  border-left: 6px solid var(--brand-accent);
}

.ui-divider {
  height: 1px;
  background: color-mix(in srgb, var(--c-line) 70%, transparent);
  margin: var(--sp-6) 0;
}

/* Empty / info states */
.ui-empty {
  padding: var(--sp-6);
  border-radius: var(--radius-3);
  border: 1px dashed color-mix(in srgb, var(--c-line) 70%, transparent);
  background: rgba(0,0,0,0.04);
  color: var(--c-muted);
  font-size: var(--fs-1);
  text-align: center;
}

.ui-cta-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-5);
}

.ui-cta-row__text {
  min-width: 0;
}

.ui-cta-row__actions {
  flex: 0 0 auto;
}

/* =============================
   COURSE FINDER (light filters)
   ============================= */

.ui-reco {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-4);
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-2);
  border: 1px solid color-mix(in srgb, var(--brand-accent) 22%, transparent);
  background: color-mix(in srgb, var(--brand-accent) 10%, var(--c-surface));
}

.ui-reco__kicker {
  font-size: 12px;
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: color-mix(in srgb, var(--c-muted) 85%, var(--brand-accent) 15%);
  margin-bottom: 2px;
}

.ui-reco__title {
  font-size: var(--fs-2);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.01em;
  color: var(--c-text);
}

.ui-reco__muted {
  font-weight: var(--font-weight-semibold);
  color: var(--c-muted);
}

.ui-reco__actions {
  flex: 0 0 auto;
}

.ui-reco__btn {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--brand-accent) 28%, transparent);
  background: color-mix(in srgb, var(--c-surface) 92%, var(--brand-accent) 8%);
  color: color-mix(in srgb, var(--c-text) 86%, var(--brand-accent) 14%);
  padding: 10px 14px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: var(--font-weight-extrabold);
  cursor: pointer;
}

.ui-reco__btn:hover {
  background: color-mix(in srgb, var(--c-surface) 86%, var(--brand-accent) 14%);
}

.ui-reco__btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.ui-filterbar {
  padding: var(--sp-4) var(--sp-5);
  border-radius: var(--radius-2);
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  background: color-mix(in srgb, var(--c-surface) 92%, var(--c-bg));
}

.ui-filterbar__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-4);
  align-items: flex-end;
}

.ui-filtergroup {
  min-width: 0;
}

.ui-filtergroup__label {
  font-size: 12px;
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--c-muted);
  margin-bottom: var(--sp-2);
}

.ui-filtergroup__chips {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.ui-filterchip {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  background: color-mix(in srgb, var(--c-text) 3%, var(--c-surface));
  color: color-mix(in srgb, var(--c-text) 82%, transparent);
  padding: 6px 10px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  cursor: pointer;
  user-select: none;
}

.ui-filterchip:hover {
  background: color-mix(in srgb, var(--c-text) 4.5%, var(--c-surface));
}

.ui-filterchip:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.ui-filterchip.is-active,
.ui-filterchip[aria-pressed="true"] {
  background: color-mix(in srgb, var(--brand-accent) 14%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-accent) 30%, transparent);
  color: color-mix(in srgb, var(--c-text) 86%, var(--brand-accent) 14%);
}

.ui-filterbar__actions {
  margin-left: auto;
}

.ui-filterreset {
  appearance: none;
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  background: transparent;
  color: var(--c-muted);
  padding: 8px 12px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: var(--font-weight-semibold);
  cursor: pointer;
}

.ui-filterreset:hover {
  background: color-mix(in srgb, var(--c-text) 3%, var(--c-surface));
  color: color-mix(in srgb, var(--c-text) 82%, transparent);
}

@media (max-width: 640px) {
  .ui-cta-row {
    flex-direction: column;
    align-items: stretch;
  }
}

/* Alerts (Course list confirmation/errors) */
.ui-alert {
  padding: var(--sp-6);
  border-radius: var(--radius-2);
  font-weight: 600;
}

.ui-alert__title {
  margin: 0 0 var(--sp-3);
}

.ui-alert--success {
  background: color-mix(in srgb, var(--brand-accent) 10%, transparent);
}

.ui-alert--error {
  background: rgba(233, 0, 140, 0.12);
  color: #6a003f;
}

/* =============================
   COMPONENTS
   ============================= */

.ui-card {
  background: var(--c-surface);
  border-radius: var(--radius-3);
  box-shadow: var(--shadow-1);
  border: 1px solid color-mix(in srgb, var(--c-line) 80%, transparent);
}

.ui-card--soft {
  box-shadow: 0 10px 22px rgba(0, 0, 0, 0.06);
  border-color: color-mix(in srgb, var(--c-line) 70%, transparent);
}

.ui-card--brand {
  background: var(--brand-primary);
  color: #fff;
  border-color: color-mix(in srgb, var(--brand-primary) 50%, transparent);
}

.ui-card--pad {
  padding: var(--sp-7);
}

.ui-card--tight {
  padding: var(--sp-6);
}

.ui-grid-2 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .ui-grid-2 { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.ui-grid-3 {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .ui-grid-3 { grid-template-columns: repeat(3, minmax(0, 1fr)); }
}

/* =============================
   SEGMENTED TAB CONTROL (v2 surfaces)
   Reused by Instructor / Parent / Admin
   ============================= */

.switcher {
  position: sticky;
  top: var(--switcher-top, var(--appbar-h, 0px));
  z-index: 19;
  padding: 2px 0 var(--sp-2);
  background: var(--c-bg);
  border-bottom: 1px solid color-mix(in srgb, var(--c-line) 65%, transparent);
}

.switcher--static {
  position: static;
  top: auto;
  border-bottom: 0;
  padding: 0;
  background: transparent;
}

.switcher__seg {
  --seg-cols: 2;
  --seg-maxw: 520px;
  display: grid;
  grid-template-columns: repeat(var(--seg-cols), minmax(0, 1fr));
  border-radius: 999px;
  background: var(--c-surface);
  border: 1px solid color-mix(in srgb, var(--c-line) 65%, transparent);
  overflow: hidden;
  max-width: var(--seg-maxw);
}

.switcher__btn {
  appearance: none;
  border: 0;
  background: transparent;
  padding: 7px 8px;
  font-weight: var(--font-weight-extrabold);
  font-size: 12px;
  color: var(--c-muted);
  cursor: pointer;
  -webkit-tap-highlight-color: transparent;
  min-height: 36px;
  width: 100%;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  text-decoration: none;
}

.switcher__btn:hover {
  background: color-mix(in srgb, var(--c-line) 10%, transparent);
  color: var(--c-text);
}

.switcher__btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.switcher__btn[aria-selected="true"],
.switcher__btn.is-active {
  background: color-mix(in srgb, var(--brand-primary) 10%, var(--c-surface));
  color: var(--c-text);
}

.ui-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 10px 16px;
  border-radius: 999px;
  text-decoration: none;
  font-weight: var(--font-weight-bold);
  font-size: var(--fs-1);
  border: 1px solid transparent;
  cursor: pointer;
  background: transparent;
}

.ui-btn:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
}

.ui-btn--primary {
  background: var(--brand-accent);
  color: #fff;
}

.ui-btn--secondary {
  background: rgba(0,0,0,0.06);
  color: var(--c-text);
  border-color: color-mix(in srgb, var(--c-line) 70%, transparent);
}

.ui-badge,
.ui-chip {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  background: rgba(0,0,0,0.06);
}

/* Compact inline badge (status, not action) */
.ui-badge--inline {
  gap: 6px;
  padding: 3px 8px;
  font-weight: var(--font-weight-semibold);
  border: 1px solid color-mix(in srgb, var(--c-line) 55%, transparent);
  background: color-mix(in srgb, var(--c-text) 4%, var(--c-surface));
  color: color-mix(in srgb, var(--c-text) 82%, transparent);
  cursor: default;
}

.ui-badge--availability[data-status="ok"] {
  background: color-mix(in srgb, var(--c-status-ok) 12%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-status-ok) 26%, transparent);
  color: color-mix(in srgb, var(--c-text) 82%, var(--c-status-ok) 18%);
}

.ui-badge--availability[data-status="warn"] {
  background: color-mix(in srgb, var(--c-status-warn) 14%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-status-warn) 26%, transparent);
  color: color-mix(in srgb, var(--c-text) 86%, var(--c-status-warn) 14%);
}

.ui-badge--availability[data-status="urgent"] {
  background: color-mix(in srgb, var(--c-status-urgent) 14%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-status-urgent) 28%, transparent);
  color: color-mix(in srgb, var(--c-text) 84%, var(--c-status-urgent) 16%);
}

.ui-badge--availability[data-status="full"] {
  background: color-mix(in srgb, var(--c-status-full) 10%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-status-full) 24%, transparent);
  color: color-mix(in srgb, var(--c-text) 84%, var(--c-status-full) 16%);
}

/* Chip variants (Phase 4A) */
.ui-chip--metric {
  background: color-mix(in srgb, var(--brand-primary) 40%, rgba(0,0,0,0.04));
}

.ui-chip--status {
  background: color-mix(in srgb, var(--brand-accent) 18%, rgba(0,0,0,0.04));
}

/* Finder segment/chips (keeps legacy JS selectors: .segment, .chip) */
.segment {
  display: inline-flex;
  background: rgba(255,255,255,0.18);
  border-radius: 999px;
  padding: 4px;
  gap: 6px;
  border: 1px solid rgba(255,255,255,0.18);
}

.segment button {
  border: none;
  background: transparent;
  color: inherit;
  padding: 8px 16px;
  border-radius: 999px;
  font-weight: var(--font-weight-bold);
  cursor: pointer;
  transition: transform 120ms ease, background 120ms ease, box-shadow 120ms ease, color 120ms ease;
}

.segment button:hover {
  background: rgba(255,255,255,0.14);
  transform: translateY(-1px);
}

.segment button:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(255,255,255,0.28),
    0 0 0 6px color-mix(in srgb, var(--brand-accent) 26%, transparent);
}

.segment button.is-active {
  background: var(--c-surface);
  color: var(--c-text);
  box-shadow: 0 12px 24px rgba(0,0,0,0.16);
}

.ui-wizard {
  list-style: none;
  display: grid;
  grid-template-columns: repeat(4, minmax(0, 1fr));
  gap: 8px;
  margin: var(--sp-5) 0 0;
  padding: 0;
}

.ui-wizard__step {
  padding: 10px 12px;
  border-radius: 999px;
  text-align: center;
  font-weight: var(--font-weight-bold);
  font-size: var(--fs-1);
  background: rgba(255,255,255,0.14);
  border: 1px solid rgba(255,255,255,0.18);
  color: rgba(255,255,255,0.88);
}

.ui-wizard__step.is-active {
  background: #fff;
  color: #0b2c3a;
}

@media (max-width: 640px) {
  .ui-wizard { grid-template-columns: 1fr 1fr; }
}

.chip-row {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 10px;
  align-items: start;
}

.chip {
  width: 100%;
  display: inline-flex;
  justify-content: center;
  border: 1px solid rgba(255,255,255,0.18);
  background: rgba(255,255,255,0.14);
  color: rgba(255,255,255,0.92);
  padding: 10px 12px;
  border-radius: 999px;
  cursor: pointer;
  font-weight: var(--font-weight-bold);
  transition: transform 120ms ease, background 120ms ease, border-color 120ms ease, box-shadow 120ms ease, color 120ms ease;
}

.chip:hover {
  background: rgba(255,255,255,0.18);
  border-color: rgba(255,255,255,0.28);
  transform: translateY(-1px);
  box-shadow: 0 12px 24px rgba(0,0,0,0.14);
}

.chip:focus-visible {
  outline: none;
  box-shadow:
    0 0 0 3px rgba(255,255,255,0.28),
    0 0 0 6px color-mix(in srgb, var(--brand-accent) 26%, transparent);
}

.chip.is-active {
  background: var(--c-surface);
  color: var(--c-text);
  border-color: color-mix(in srgb, var(--brand-accent) 48%, rgba(255,255,255,0.55));
  box-shadow: 0 14px 28px rgba(0,0,0,0.18);
}

/* Finder layout: a bit more air between groups (no markup changes) */
#finder .ui-vstack--loose {
  gap: var(--sp-7);
}

.ui-card--recommendation .course-title {
  font-size: var(--fs-4);
  font-weight: var(--font-weight-extrabold);
}

.ui-card--recommendation .ui-sticky-cta .ui-btn--primary {
  box-shadow: 0 12px 26px rgba(0, 0, 0, 0.16);
}

html[data-tier="premium"] .ui-lang select,
body[data-tier="premium"] .ui-lang select,
html[data-preset="premium"] .ui-lang select,
body[data-preset="premium"] .ui-lang select {
  padding: 6px 10px;
  font-size: var(--fs-0);
  font-weight: var(--font-weight-semibold);
  opacity: 0.88;
}

/* Category cards (Landing) */
.category-card {
  overflow: hidden;
}

.category-card__header {
  padding: 12px 16px;
  color: #fff;
  font-weight: var(--font-weight-extrabold);
  letter-spacing: 0.06em;
  text-transform: uppercase;
  font-size: 12px;
  background: var(--course-accent, var(--brand-primary));
}

.category-card__body {
  padding: 14px 16px 18px;
}

/* Availability grid */
.availability-grid {
  display: grid;
  grid-auto-flow: column;
  grid-auto-columns: 10px;
  gap: 4px;
  align-items: center;
}

.availability-cell {
  width: 10px;
  height: 10px;
  border-radius: 3px;
  background: rgba(0,0,0,0.12);
}

.availability-cell.filled {
  background: var(--brand-accent);
}

.ui-accordion {
  display: grid;
  gap: var(--sp-3);
}

.ui-accordion details,
.ui-accordion__item {
  background: var(--c-surface);
  border-radius: var(--radius-2);
  box-shadow: 0 8px 20px rgba(0,0,0,0.08);
  padding: var(--sp-5) var(--sp-6);
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
}

.ui-accordion summary,
.ui-accordion__toggle {
  cursor: pointer;
  font-weight: var(--font-weight-bold);
  display: flex;
  align-items: center;
  gap: 10px;
}

.ui-accordion__toggle {
  width: 100%;
  text-align: left;
  background: transparent;
  border: 0;
  padding: 0;
  color: inherit;
}

.ui-accordion__toggle:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-2);
}

.ui-accordion summary::marker { content: ""; }

.ui-accordion details[open] summary { margin-bottom: var(--sp-3); }

.ui-accordion__toggle[aria-expanded="true"] { margin-bottom: var(--sp-3); }

.ui-accordion__panel { padding-top: var(--sp-0); }

.ui-accordion .ui-muted { color: var(--c-muted); }

.ui-muted { color: var(--c-muted); }

/* =============================
   COURSE CARD
   ============================= */

.course-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-5);
}

@media (min-width: 900px) {
  .course-grid { grid-template-columns: repeat(2, minmax(0, 1fr)); }
}

.course-card {
  border-radius: var(--radius-3);
  overflow: hidden;
  background: var(--c-surface);
  box-shadow: var(--shadow-1);
  border: 1px solid color-mix(in srgb, var(--c-line) 75%, transparent);
}

.course-card__top {
  background: var(--course-accent, var(--brand-primary));
  color: #fff;
  padding: var(--sp-4) var(--sp-5);
  font-size: 0.75rem;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: var(--sp-3);
}

/* Public course list: identity header (Level · Program · Trimester) */
.course-card__top--identity {
  text-transform: none;
  letter-spacing: normal;
  font-size: var(--fs-1);
  font-weight: var(--font-weight-regular);
}

.course-card__top--identity .course-card__headerline {
  margin: 0;
  color: #fff;
}

.course-card__top--identity .course-card__level {
  color: #fff;
}

.course-card__top--identity .course-card__program,
.course-card__top--identity .course-card__trimester {
  color: rgba(255,255,255,0.88);
}

/* Course detail: allow full-bleed header inside padded card */
.course-detail-card {
  overflow: hidden;
}

.course-detail-card .course-card__top {
  margin: 0;
}

/* Polish: detail card only */
.course-detail-card .course-card__line--tertiary {
  color: color-mix(in srgb, var(--c-text) 70%, var(--c-muted));
  font-weight: var(--font-weight-semibold);
}

.course-detail-card .ui-divider {
  background: color-mix(in srgb, var(--c-line) 55%, transparent);
  margin: var(--sp-5) 0;
}

.course-card__when {
  opacity: 0.95;
}

.course-card__body {
  padding: var(--sp-5);
}

.course-title {
  margin: 0 0 var(--sp-2);
  font-size: var(--fs-3);
  font-weight: var(--font-weight-semibold);
}

.course-card__headerline {
  font-size: var(--fs-2);
  line-height: 1.25;
  margin: 0 0 var(--sp-3);
  color: var(--c-text);
}

.course-card__level {
  font-weight: var(--font-weight-extrabold);
  text-decoration: none;
  color: inherit;
}

.course-card__level:hover {
  text-decoration: underline;
  text-underline-offset: 3px;
}

.course-card__program,
.course-card__trimester {
  font-weight: var(--font-weight-regular);
}

.course-card__line {
  font-size: var(--fs-1);
  margin: 0 0 var(--sp-2);
}

.course-card__line--primary {
  font-weight: var(--font-weight-semibold);
}

.course-card__line--secondary,
.course-card__line--tertiary {
  color: var(--c-muted);
}

.course-card__price-row {
  display: flex;
  flex-wrap: nowrap;
  align-items: center;
  gap: var(--sp-4);
  justify-content: space-between;
  margin: 0 0 var(--sp-3);
}

.course-card__price {
  font-size: var(--fs-2);
  font-weight: var(--font-weight-extrabold);
  letter-spacing: -0.01em;
  color: var(--c-text);
  white-space: nowrap;
}

.ui-badge--availability {
  white-space: nowrap;
}

.course-card__footer {
  margin-top: var(--sp-4);
  padding-top: var(--sp-3);
  border-top: 1px solid color-mix(in srgb, var(--c-line) 65%, transparent);
  color: var(--c-muted);
  font-size: 12px;
}

.course-meta {
  font-size: var(--fs-1);
  color: var(--c-muted);
  margin-bottom: var(--sp-4);
}

.course-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin: var(--sp-3) 0 var(--sp-4);
}

.course-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
}

/* Inline action rows (admin/inbox, tables, etc.) */
.ui-actions {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  align-items: center;
  justify-content: flex-end;
}

.ui-actions--start {
  justify-content: flex-start;
}

.ui-actions form {
  margin: 0;
}

.ui-actions__form {
  display: inline-flex;
  gap: var(--sp-2);
  align-items: center;
}

.ui-actions .ui-input {
  max-width: 320px;
}

/* Prefer primary action first on small screens */
@media (max-width: 720px) {
  .course-actions .ui-btn { flex: 1 1 auto; }
  .course-actions .ui-btn--primary { order: -1; }

  .ui-actions .ui-btn { flex: 1 1 auto; }
  .ui-actions .ui-btn--primary { order: -1; }
  .ui-actions .ui-input { flex: 1 1 220px; max-width: none; }
}

/* =============================
   DETAILS + STICKY CTA (mobile)
   ============================= */

.ui-panel {
  margin-top: var(--sp-7);
  background: var(--c-surface);
  border-radius: var(--radius-3);
  padding: var(--sp-7);
  box-shadow: var(--shadow-1);
  border: 1px solid color-mix(in srgb, var(--c-line) 75%, transparent);
}

.ui-panel h2,
.ui-panel h3 {
  margin-top: 0;
}

.ui-panel__header {
  background: var(--panel-accent, var(--brand-primary));
  color: #fff;
  border-radius: var(--radius-3);
  padding: var(--sp-6);
  display: grid;
  gap: var(--sp-3);
}

.ui-stack {
  margin-top: var(--sp-6);
  display: grid;
  gap: var(--sp-6);
}

.ui-details-zone {
  display: grid;
  gap: var(--sp-3);
}

.ui-details-zone--cta {
  margin-top: var(--sp-2);
}

.ui-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
  align-items: center;
  justify-content: space-between;
}

.ui-pill-row {
  display: flex;
  flex-wrap: wrap;
  gap: 10px;
}

.ui-kicker {
  font-size: 12px;
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ui-kicker--mb-2 {
  margin-bottom: var(--sp-2);
}

.ui-details-title {
  margin: 0;
  font-size: var(--fs-4);
  font-weight: var(--font-weight-extrabold);
}

.ui-h3 {
  margin: 0 0 var(--sp-2);
  font-size: 16px;
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ui-chip--inverse {
  background: rgba(255,255,255,0.18);
  color: #fff;
}

.ui-link-reset {
  color: inherit;
  text-decoration: none;
}

.ui-preline {
  white-space: pre-line;
  line-height: 1.6;
}

.ui-pill-row--mb-3 {
  margin-bottom: var(--sp-3);
}

.ui-sa-logo {
  height: 14px;
  width: auto;
  display: block;
}

.ui-embed {
  width: 100%;
  min-height: 420px;
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  border-radius: 14px;
  background: #fff;
}

/* Goal grid (generated by JS in course detail panel) */
.goal-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-4);
}

@media (min-width: 900px) {
  .goal-grid {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }
}

.goal-card {
  background: color-mix(in srgb, var(--c-surface) 92%, #ffffff 8%);
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  border-radius: var(--radius-2);
  padding: var(--sp-5);
}

.goal-title {
  font-weight: var(--font-weight-extrabold);
  margin-bottom: var(--sp-2);
}

.goal-body {
  color: var(--c-muted);
  font-size: var(--fs-1);
}

.ui-sticky-cta {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  margin-top: var(--sp-6);
}

.ui-sticky-cta--static {
  position: static;
  bottom: auto;
  background: transparent;
  padding: 0;
  border: none;
  margin-top: 0;
}

@media (max-width: 720px) {
  .ui-sticky-cta {
    position: sticky;
    bottom: 0;
    background: color-mix(in srgb, var(--c-surface) 92%, transparent);
    padding: var(--sp-4);
    border-radius: var(--radius-2);
    border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  }

  .ui-sticky-cta--static {
    position: static;
    bottom: auto;
    background: transparent;
    padding: 0;
    border: none;
  }
}

/* Tables */
.ui-table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-0);
}

.ui-table th,
.ui-table td {
  text-align: left;
  padding: 8px 10px;
  border-bottom: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
}

.ui-table th {
  font-weight: var(--font-weight-extrabold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  font-size: 11px;
  color: color-mix(in srgb, var(--c-text) 65%, transparent);
}

.ui-table td.ui-empty-cell {
  padding: var(--sp-6) 10px;
  text-align: center;
  color: var(--c-muted);
}

/* Forms */
.ui-form {
  display: grid;
  gap: var(--sp-4);
}

.ui-form__title {
  margin: 0;
  font-size: var(--fs-3);
  font-weight: var(--font-weight-extrabold);
}

.ui-form__note {
  margin-top: var(--sp-2);
}

.ui-check label {
  display: inline-flex;
  align-items: flex-start;
  gap: 10px;
  font-size: var(--fs-1);
  font-weight: var(--font-weight-bold);
  text-transform: none;
  letter-spacing: normal;
}

.ui-check input[type="checkbox"] {
  margin-top: 3px;
}

.ui-form label {
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
}

.ui-input,
.ui-textarea {
  width: 100%;
  padding: 10px 12px;
  border-radius: 12px;
  border: 1px solid color-mix(in srgb, var(--c-line) 75%, transparent);
  font-size: var(--fs-1);
}

.ui-input:focus,
.ui-textarea:focus {
  outline: none;
  box-shadow: var(--focus-ring);
  border-color: color-mix(in srgb, var(--brand-primary) 70%, transparent);
}

/* Stepper */
.stepper {
  display: flex;
  gap: 10px;
}

.step {
  flex: 1;
  padding: 8px 10px;
  border-radius: 999px;
  background: rgba(0,0,0,0.06);
  font-size: 12px;
  font-weight: var(--font-weight-bold);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  text-align: center;
}

.step.is-active {
  background: var(--brand-accent);
  color: #fff;
}

/* Multi-step forms (course enrollment) */
.form-step {
  display: none;
  gap: var(--sp-4);
}

.form-step.is-active {
  display: grid;
}

/* =============================
   FOOTER
   ============================= */

.ui-footer {
  margin-top: var(--sp-9);
  padding: var(--sp-7) 0 var(--sp-4);
  background: #0b1220;
  color: var(--c-surface);
  border-top: 1px solid rgba(255,255,255,0.14);
  font-size: var(--fs-0);
}

.ui-footer__row {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-3);
  justify-content: space-between;
  align-items: center;
}

.ui-powered {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  text-decoration: none;
}

.ui-powered img {
  height: 18px;
  width: auto;
  display: block;
}

/* =============================
   SWOMOS CORE SKIN (Variant A)
   - Neutral, product-first SaaS feel
   - Tenants may still override: --brand-primary, --brand-accent, --font-ui
   ============================= */

:root {
  --c-bg: #f7f8fb;
  --c-surface: #ffffff;
  --c-text: #0b1220;
  --c-muted: rgba(11, 18, 32, 0.70);
  --c-line: rgba(11, 18, 32, 0.12);

  /* Swomos defaults (used when tenant does not override tokens) */
  --brand-primary: #13544a;
  --brand-accent: #4a8f82;
  --surface-soft: #dff0ed;
  --brand-dark: #01332a;

  --radius-1: 12px;
  --radius-2: 16px;
  --radius-3: 22px;
  --shadow-1: 0 10px 26px rgba(11, 18, 32, 0.08);
  --shadow-2: 0 18px 40px rgba(11, 18, 32, 0.12);
}

/* =============================
   PROTOTYPE INTERFACES (v1)
   - Role navigation + matrix table
   ============================= */

.ui-header--prototype .ui-nav--roles {
  gap: 14px;
}

.ui-nav--roles .ui-nav__link.is-disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.ui-nav--roles .ui-nav__link.is-active {
  opacity: 1;
  color: var(--c-text);
  border-bottom: 2px solid color-mix(in srgb, var(--brand-primary) 80%, transparent);
  padding-bottom: 6px;
}

.ui-table-wrap {
  width: 100%;
  overflow-x: auto;
  -webkit-overflow-scrolling: touch;
  border: 1px solid color-mix(in srgb, var(--c-line) 80%, transparent);
  border-radius: var(--radius-2);
  background: var(--c-surface);
}

.ui-table--matrix {
  min-width: 860px;
}

.ui-table--matrix th,
.ui-table--matrix td {
  text-align: center;
  vertical-align: middle;
  white-space: nowrap;
}

.ui-table--matrix th[scope="row"] {
  text-align: left;
}

.ui-status {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 30px;
  height: 30px;
  border-radius: 10px;
  font-weight: var(--font-weight-semibold);
  font-size: var(--fs-0);
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  background: color-mix(in srgb, var(--c-surface) 92%, transparent);
  color: var(--c-muted);
}

.ui-status[data-status="done"] {
  background: color-mix(in srgb, var(--brand-primary) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
  color: color-mix(in srgb, var(--brand-dark) 86%, var(--c-text));
}

.ui-status[data-status="progress"] {
  background: color-mix(in srgb, var(--brand-accent) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-accent) 30%, transparent);
  color: color-mix(in srgb, var(--brand-dark) 76%, var(--c-text));
}

.ui-status[data-status="absent"] {
  background: color-mix(in srgb, var(--c-text) 6%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-text) 14%, transparent);
  color: var(--c-text);
}

.ui-chip--status[data-status="done"] {
  background: color-mix(in srgb, var(--brand-primary) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
}

.ui-chip--status[data-status="progress"] {
  background: color-mix(in srgb, var(--brand-accent) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-accent) 30%, transparent);
}

.ui-chip--status[data-status="absent"] {
  background: color-mix(in srgb, var(--c-text) 6%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-text) 14%, transparent);
}

/* Tenant Admin course lifecycle statuses */
.ui-chip--status[data-status="draft"] {
  background: color-mix(in srgb, var(--c-text) 6%, var(--c-surface));
  border-color: color-mix(in srgb, var(--c-text) 14%, transparent);
}

.ui-chip--status[data-status="published"] {
  background: color-mix(in srgb, var(--brand-accent) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-accent) 30%, transparent);
}

.ui-chip--status[data-status="full"] {
  background: color-mix(in srgb, var(--brand-primary) 18%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-primary) 30%, transparent);
}

.ui-chip--status[data-status="completed"] {
  background: color-mix(in srgb, var(--brand-dark) 10%, var(--c-surface));
  border-color: color-mix(in srgb, var(--brand-dark) 22%, transparent);
}

.ui-header {
  background: color-mix(in srgb, var(--c-surface) 84%, transparent);
  border-bottom: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  backdrop-filter: saturate(1.15) blur(10px);
}

.ui-brand__name {
  letter-spacing: -0.02em;
}

.ui-brand__tenant {
  font-size: var(--fs-0);
  font-weight: var(--font-weight-semibold);
  color: var(--c-muted);
  padding: 4px 10px;
  border-radius: 999px;
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  background: color-mix(in srgb, var(--c-surface) 86%, transparent);
}

.ui-nav__link {
  opacity: 0.86;
}

.ui-nav__link:hover {
  text-decoration: none;
  opacity: 1;
}

.ui-hero.ui-hero--swomos {
  color: var(--c-text);
  background:
    radial-gradient(1200px 500px at 20% 0%, color-mix(in srgb, var(--brand-primary) 42%, transparent), transparent 60%),
    radial-gradient(900px 400px at 80% 10%, color-mix(in srgb, var(--brand-accent) 22%, transparent), transparent 55%),
    linear-gradient(180deg, color-mix(in srgb, var(--c-surface) 92%, transparent), var(--c-surface));
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  box-shadow: var(--shadow-2);
}

.ui-hero.ui-hero--swomos .ui-hero__title,
.ui-hero.ui-hero--swomos .ui-hero__text {
  text-shadow: none;
}

.ui-hero__grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: var(--sp-6);
  padding: var(--sp-8);
}

@media (min-width: 900px) {
  .ui-hero__grid {
    grid-template-columns: 1.15fr 0.85fr;
    align-items: center;
    padding: var(--sp-9);
  }
}

.ui-hero__content {
  max-width: 720px;
}

.ui-hero__mock {
  display: none;
}

@media (min-width: 900px) {
  .ui-hero__mock {
    display: block;
  }
}

.ui-mock {
  border-radius: calc(var(--radius-3) + 4px);
  background: color-mix(in srgb, var(--c-surface) 92%, transparent);
  border: 1px solid color-mix(in srgb, var(--c-line) 70%, transparent);
  box-shadow: 0 18px 50px rgba(11, 18, 32, 0.16);
  overflow: hidden;
}

.ui-mock__topbar {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 12px 14px;
  border-bottom: 1px solid color-mix(in srgb, var(--c-line) 65%, transparent);
  background: color-mix(in srgb, var(--c-surface) 88%, transparent);
}

.ui-mock__dot {
  width: 10px;
  height: 10px;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.14);
}

.ui-mock__pill {
  margin-left: auto;
  width: 44%;
  height: 10px;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.10);
}

.ui-mock__body {
  padding: 14px;
  display: grid;
  gap: 12px;
}

.ui-mock__kpi {
  height: 46px;
  border-radius: var(--radius-2);
  border: 1px solid color-mix(in srgb, var(--c-line) 65%, transparent);
  background:
    linear-gradient(135deg, color-mix(in srgb, var(--brand-primary) 16%, var(--c-surface)), var(--c-surface));
}

.ui-mock__rows {
  display: grid;
  gap: 10px;
  margin-top: 4px;
}

.ui-mock__row {
  height: 14px;
  border-radius: 999px;
  background: rgba(11, 18, 32, 0.08);
}

.ui-btn {
  border-radius: 12px;
  padding: 10px 14px;
}

.ui-btn--primary {
  box-shadow: 0 12px 26px color-mix(in srgb, var(--brand-accent) 22%, transparent);
}

.ui-btn--secondary {
  background: color-mix(in srgb, var(--c-surface) 88%, transparent);
}

.course-card__top,
.category-card__header {
  background: color-mix(in srgb, var(--brand-accent) 18%, var(--c-text));
}

.ui-footer {
  background: color-mix(in srgb, var(--c-text) 92%, #000000 8%);
}

.ui-powered {
  color: rgba(255,255,255,0.75);
}
