/* ---------------------------------------------------------------
   Design tokens
   --------------------------------------------------------------- */
:root {
  /* Color */
  --color-ink: #1B222C;
  --color-slate: #5B6472;
  --color-slate-soft: #C6CCD3;
  --color-paper: #F1F3F6;
  --color-surface: #FFFFFF;
  --color-denim: #24507D;
  --color-denim-dark: #1B3D60;
  --color-moss: #3E7A4D;
  --color-rust: #B4402B;
  --color-rust-dark: #873020;

  /* Type */
  --font-heading: "Archivo", "Arial Narrow", sans-serif;
  --font-body: "IBM Plex Sans", "Segoe UI", sans-serif;

  --text-xs: 0.8125rem;
  --text-sm: 0.9375rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;
  --text-2xl: 2.25rem;

  /* Spacing scale */
  --space-1: 0.25rem;
  --space-2: 0.5rem;
  --space-3: 0.75rem;
  --space-4: 1rem;
  --space-5: 1.5rem;
  --space-6: 2rem;
  --space-7: 3rem;
  --space-8: 4rem;

  /* Shape */
  --radius-sm: 4px;
  --border-hairline: 1px solid var(--color-slate-soft);

  --focus-ring: 0 0 0 2px var(--color-paper), 0 0 0 4px var(--color-denim);

  --transition-fast: 120ms ease;
}

@media (prefers-reduced-motion: reduce) {
  :root {
    --transition-fast: 0ms;
  }
  *, *::before, *::after {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
  }
}

/* ---------------------------------------------------------------
   Reset
   --------------------------------------------------------------- */
*, *::before, *::after {
  box-sizing: border-box;
}

html, body {
  margin: 0;
  padding: 0;
}

body {
  background: var(--color-paper);
  color: var(--color-ink);
  font-family: var(--font-body);
  font-size: var(--text-base);
  line-height: 1.5;
  font-feature-settings: "tnum" 1;
  font-variant-numeric: tabular-nums;
  min-height: 100vh;
}

h1, h2, h3 {
  font-family: var(--font-heading);
  font-weight: 600;
  line-height: 1.2;
  margin: 0 0 var(--space-2);
  color: var(--color-ink);
}

h1 { font-size: var(--text-xl); }
h2 { font-size: var(--text-lg); }
h3 { font-size: var(--text-base); }

p { margin: 0 0 var(--space-4); }

a {
  color: var(--color-denim);
  text-decoration: underline;
  text-underline-offset: 2px;
}

a:hover { color: var(--color-denim-dark); }

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  overflow: hidden;
  clip: rect(0 0 0 0);
  white-space: nowrap;
}

.skip-link {
  position: absolute;
  left: var(--space-4);
  top: -100%;
  background: var(--color-ink);
  color: var(--color-surface);
  padding: var(--space-2) var(--space-4);
  z-index: 100;
  border-radius: var(--radius-sm);
  transition: top var(--transition-fast);
}

.skip-link:focus {
  top: var(--space-4);
}

:focus-visible {
  outline: none;
  box-shadow: var(--focus-ring);
  border-radius: var(--radius-sm);
}

/* ---------------------------------------------------------------
   Forms
   --------------------------------------------------------------- */
.field {
  margin-bottom: var(--space-5);
}

.field label {
  display: block;
  font-size: var(--text-sm);
  font-weight: 600;
  margin-bottom: var(--space-2);
  color: var(--color-ink);
}

.field input,
.field select,
.field textarea {
  width: 100%;
  font-family: var(--font-body);
  font-size: var(--text-base);
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-slate-soft);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-3);
  transition: border-color var(--transition-fast);
}

.field textarea {
  min-height: 6rem;
  resize: vertical;
}

.field input::placeholder,
.field textarea::placeholder {
  color: var(--color-slate);
}

.field input:hover,
.field select:hover,
.field textarea:hover {
  border-color: var(--color-slate);
}

.field input:focus-visible,
.field select:focus-visible,
.field textarea:focus-visible {
  border-color: var(--color-denim);
}

.field-error {
  color: var(--color-rust);
  font-size: var(--text-xs);
  margin-top: var(--space-2);
}

.form-error {
  color: var(--color-rust);
  background: #FBEAE7;
  border: 1px solid #E3B4AA;
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-4);
  font-size: var(--text-sm);
  margin-bottom: var(--space-5);
}

.button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-body);
  font-size: var(--text-base);
  font-weight: 600;
  color: var(--color-surface);
  background: var(--color-denim);
  border: 1px solid var(--color-denim);
  border-radius: var(--radius-sm);
  padding: var(--space-3) var(--space-5);
  cursor: pointer;
  width: 100%;
  transition: background var(--transition-fast), border-color var(--transition-fast);
}

.button:hover {
  background: var(--color-denim-dark);
  border-color: var(--color-denim-dark);
}

.button-secondary {
  background: transparent;
  color: var(--color-ink);
  border: 1px solid var(--color-slate-soft);
  width: auto;
}

.button--auto {
  width: auto;
}

.button--danger {
  background: var(--color-rust);
  border-color: var(--color-rust);
}

.button--danger:hover {
  background: var(--color-rust-dark);
  border-color: var(--color-rust-dark);
}

.button-secondary:hover {
  background: var(--color-surface);
  border-color: var(--color-slate);
}

/* ---------------------------------------------------------------
   Auth shell (login / signup)
   --------------------------------------------------------------- */
.auth-shell {
  display: grid;
  grid-template-columns: minmax(0, 2fr) minmax(0, 3fr);
  min-height: 100vh;
}

.auth-shell__panel {
  background: var(--color-denim);
  color: var(--color-surface);
  padding: var(--space-6);
  display: flex;
  flex-direction: column;
  justify-content: space-between;
}

.auth-shell__wordmark {
  font-family: var(--font-heading);
  font-size: var(--text-lg);
  font-weight: 700;
  letter-spacing: 0.02em;
}

.auth-shell__tagline {
  font-size: var(--text-lg);
  max-width: 22ch;
  line-height: 1.35;
}

.auth-shell__main {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--space-6);
}

.auth-form {
  width: 100%;
  max-width: 26rem;
}

.auth-form__subtext {
  color: var(--color-slate);
  margin-bottom: var(--space-6);
}

.auth-form__footer {
  margin-top: var(--space-5);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

@media (max-width: 900px) {
  .auth-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .auth-shell__panel {
    flex-direction: row;
    align-items: center;
    justify-content: flex-start;
    padding: var(--space-4) var(--space-5);
  }

  .auth-shell__tagline {
    display: none;
  }

  .auth-shell__main {
    padding: var(--space-5);
    align-items: flex-start;
  }
}

/* ---------------------------------------------------------------
   App shell (post-login)
   --------------------------------------------------------------- */
.app-shell {
  display: grid;
  grid-template-columns: 16rem 1fr;
  min-height: 100vh;
}

.app-shell__sidebar {
  background: var(--color-ink);
  color: var(--color-surface);
  padding: var(--space-5) var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-5);
}

.app-shell__logo {
  font-family: var(--font-heading);
  font-size: var(--text-base);
  font-weight: 700;
  letter-spacing: 0.02em;
  padding: 0 var(--space-2);
}

.app-nav {
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.app-nav__item {
  display: block;
  color: var(--color-slate-soft);
  text-decoration: none;
  font-size: var(--text-sm);
  padding: var(--space-3) var(--space-3);
  border-radius: var(--radius-sm);
  border-left: 3px solid transparent;
  transition: background var(--transition-fast), color var(--transition-fast);
}

.app-nav__item:hover {
  background: rgba(255, 255, 255, 0.06);
  color: var(--color-surface);
}

.app-nav__item.is-active {
  background: rgba(255, 255, 255, 0.1);
  color: var(--color-surface);
  border-left-color: var(--color-denim);
  font-weight: 600;
}

.app-shell__body {
  display: flex;
  flex-direction: column;
  min-width: 0;
}

.app-shell__topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--space-4) var(--space-6);
  border-bottom: var(--border-hairline);
  background: var(--color-surface);
}

.app-shell__page-title {
  margin: 0;
}

.app-shell__user {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  font-size: var(--text-sm);
  color: var(--color-slate);
}

.app-shell__user-email {
  color: var(--color-slate);
}

.app-shell__user form {
  margin: 0;
}

.app-shell__main {
  max-width: 72rem;
  width: 100%;
  margin: 0 auto;
  padding: var(--space-6);
}

@media (max-width: 900px) {
  .app-shell {
    grid-template-columns: 1fr;
    grid-template-rows: auto 1fr;
  }

  .app-shell__sidebar {
    flex-direction: row;
    align-items: center;
    overflow-x: auto;
  }

  .app-nav {
    flex-direction: row;
  }

  .app-shell__topbar {
    flex-wrap: wrap;
    gap: var(--space-3);
  }
}

.list-row {
  padding: var(--space-4) 0;
  border-bottom: var(--border-hairline);
}

.list-row:first-child {
  border-top: var(--border-hairline);
}

/* ---------------------------------------------------------------
   Placeholder page
   --------------------------------------------------------------- */
.placeholder-panel {
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  padding: var(--space-6);
  background: var(--color-surface);
  color: var(--color-slate);
}

/* ---------------------------------------------------------------
   Dashboard
   --------------------------------------------------------------- */
.stat-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(12rem, 1fr));
  gap: var(--space-4);
  margin-bottom: var(--space-6);
}

.stat-card {
  border: var(--border-hairline);
  border-radius: var(--radius-sm);
  background: var(--color-surface);
  padding: var(--space-5);
}

.stat-card__label {
  font-size: var(--text-sm);
  color: var(--color-slate);
  margin-bottom: var(--space-2);
}

.stat-card__value {
  font-family: var(--font-heading);
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--color-ink);
}

/* ---------------------------------------------------------------
   Manage BAs
   --------------------------------------------------------------- */
.page-header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
}

.page-header__count {
  color: var(--color-slate);
  font-size: var(--text-sm);
}

.filter-bar {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-3);
  margin-bottom: var(--space-5);
  align-items: flex-end;
}

.filter-bar__field {
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
}

.filter-bar__field--grow {
  flex: 1 1 16rem;
}

.filter-bar__field label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--color-slate);
}

.filter-bar__field input,
.filter-bar__field select {
  font-family: var(--font-body);
  font-size: var(--text-sm);
  color: var(--color-ink);
  background: var(--color-surface);
  border: 1px solid var(--color-slate-soft);
  border-radius: var(--radius-sm);
  padding: var(--space-2) var(--space-3);
}

.ba-card {
  display: flex;
  gap: var(--space-4);
  padding: var(--space-5) 0;
  border-bottom: var(--border-hairline);
}

.ba-card:first-child {
  border-top: var(--border-hairline);
}

.ba-card__avatar {
  width: 3rem;
  height: 3rem;
  border-radius: 50%;
  flex-shrink: 0;
  object-fit: cover;
  background: var(--color-denim);
  color: var(--color-surface);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-heading);
  font-weight: 700;
}

.ba-card__body {
  flex: 1;
  min-width: 0;
}

.ba-card__header {
  display: flex;
  align-items: center;
  gap: var(--space-3);
  flex-wrap: wrap;
  margin-bottom: var(--space-2);
}

.ba-card__name {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: var(--text-base);
}

.ba-card__meta {
  color: var(--color-slate);
  font-size: var(--text-sm);
  margin-bottom: var(--space-3);
}

.ba-card__actions {
  display: flex;
  gap: var(--space-2);
  margin-top: var(--space-3);
}

.ba-card__actions .button,
.ba-card__actions .button-secondary {
  width: auto;
  padding: var(--space-2) var(--space-4);
  font-size: var(--text-sm);
}

.badge {
  display: inline-flex;
  align-items: center;
  font-size: var(--text-xs);
  font-weight: 600;
  padding: var(--space-1) var(--space-3);
  border-radius: 999px;
  text-transform: uppercase;
  letter-spacing: 0.03em;
}

.badge--active {
  background: #E4EFE7;
  color: var(--color-moss);
}

.badge--inactive {
  background: #F2E4E1;
  color: var(--color-rust);
}

.details-toggle {
  font-size: var(--text-sm);
}

.details-toggle summary {
  cursor: pointer;
  color: var(--color-denim);
  font-weight: 600;
}

.details-toggle[open] summary {
  margin-bottom: var(--space-2);
}

.form-panel {
  max-width: 32rem;
}

.empty-state {
  color: var(--color-slate);
  padding: var(--space-6) 0;
  text-align: center;
}