/* Nexium Inventory Hub - base design tokens and shell layout. */

:root {
  --color-bg: #f7f7f8;
  --color-surface: #ffffff;
  --color-border: #e3e3e7;
  --color-text: #1a1a1e;
  --color-text-muted: #6b6b72;
  --color-accent: #3654d9;
  --color-accent-contrast: #ffffff;
  --color-success: #1e8e5a;
  --color-warning: #b8760c;
  --color-danger: #c4362e;

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

  --text-xs: 0.8125rem;
  --text-sm: 0.875rem;
  --text-base: 1rem;
  --text-lg: 1.25rem;
  --text-xl: 1.75rem;

  --space-1: 4px;
  --space-2: 8px;
  --space-3: 12px;
  --space-4: 16px;
  --space-5: 24px;
  --space-6: 32px;

  --radius: 10px;
  --shadow-card: 0 1px 2px rgba(20, 20, 24, 0.05);

  --transition-theme: background-color 0.25s ease, border-color 0.25s ease, color 0.25s ease, box-shadow 0.25s ease;
}

@media (prefers-color-scheme: dark) {
  :root {
    --color-bg: #0c0d0f;
    --color-surface: #161719;
    --color-border: #2b2c30;
    --color-text: #f1f1f2;
    --color-text-muted: #9a9aa1;
    --color-accent: #7b93ff;
    --color-accent-contrast: #0c0d0f;
    --color-success: #3fcb86;
    --color-warning: #e0a93c;
    --color-danger: #e5635a;
    --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.35);
  }
}

:root[data-theme="dark"] {
  --color-bg: #0c0d0f;
  --color-surface: #161719;
  --color-border: #2b2c30;
  --color-text: #f1f1f2;
  --color-text-muted: #9a9aa1;
  --color-accent: #7b93ff;
  --color-accent-contrast: #0c0d0f;
  --color-success: #3fcb86;
  --color-warning: #e0a93c;
  --color-danger: #e5635a;
  --shadow-card: 0 1px 2px rgba(0, 0, 0, 0.35);
}

:root[data-theme="light"] {
  --color-bg: #f7f7f8;
  --color-surface: #ffffff;
  --color-border: #e3e3e7;
  --color-text: #1a1a1e;
  --color-text-muted: #6b6b72;
  --color-accent: #3654d9;
  --color-accent-contrast: #ffffff;
  --color-success: #1e8e5a;
  --color-warning: #b8760c;
  --color-danger: #c4362e;
  --shadow-card: 0 1px 2px rgba(20, 20, 24, 0.05);
}

* {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  min-height: 100vh;
  background-color: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ui);
  font-size: var(--text-base);
  line-height: 1.5;
  transition: var(--transition-theme);
}

@media (prefers-reduced-motion: reduce) {
  * {
    transition: none !important;
    animation: none !important;
  }
}

a {
  color: var(--color-accent);
  text-decoration: none;
}

a:hover {
  text-decoration: underline;
}

table {
  font-variant-numeric: tabular-nums;
  width: 100%;
  border-collapse: collapse;
}

th,
td {
  text-align: left;
  padding: var(--space-3) var(--space-4);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
  transition: var(--transition-theme);
}

th {
  color: var(--color-text-muted);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
  font-size: var(--text-xs);
}

tr:last-child td {
  border-bottom: none;
}

.card__body {
  overflow-x: auto;
}

/* ---------------------------------------------------------------------
   Top bar
   --------------------------------------------------------------------- */

.topbar {
  position: sticky;
  top: 0;
  z-index: 10;
  display: flex;
  align-items: center;
  gap: var(--space-5);
  height: 56px;
  padding: 0 var(--space-5);
  background-color: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
  transition: var(--transition-theme);
}

.topbar__brand {
  font-size: var(--text-lg);
  font-weight: 600;
  letter-spacing: -0.01em;
  color: var(--color-text);
}

.topbar__nav {
  display: flex;
  align-items: center;
  gap: var(--space-4);
  flex: 1;
}

.topbar__link {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
  padding: var(--space-2) 0;
  border-bottom: 2px solid transparent;
  transition: var(--transition-theme), border-bottom-color 0.2s ease;
}

.topbar__link:hover {
  color: var(--color-text);
  text-decoration: none;
}

.topbar__link.is-active {
  color: var(--color-text);
  border-bottom-color: var(--color-accent);
}

.topbar__badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 18px;
  height: 18px;
  padding: 0 5px;
  margin-left: 4px;
  border-radius: 999px;
  background-color: var(--color-danger);
  color: white;
  font-size: 11px;
  font-weight: 700;
  transition: var(--transition-theme);
}

.topbar__actions {
  display: flex;
  align-items: center;
  gap: var(--space-3);
}

.topbar__user {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------
   Theme toggle
   --------------------------------------------------------------------- */

.theme-toggle {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 8px;
  border: 1px solid var(--color-border);
  background-color: var(--color-bg);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: var(--transition-theme);
}

.theme-toggle:hover {
  color: var(--color-text);
  border-color: var(--color-text-muted);
}

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

.theme-toggle svg {
  width: 16px;
  height: 16px;
}

.theme-toggle .icon-moon {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-sun {
  display: none;
}

:root[data-theme="dark"] .theme-toggle .icon-moon {
  display: block;
}

/* ---------------------------------------------------------------------
   Page content
   --------------------------------------------------------------------- */

.page {
  max-width: 1120px;
  margin: 0 auto;
  padding: var(--space-6) var(--space-5);
}

.page__header {
  display: flex;
  align-items: baseline;
  justify-content: space-between;
  gap: var(--space-4);
  margin-bottom: var(--space-5);
}

.page__title {
  font-size: var(--text-xl);
  font-weight: 600;
  letter-spacing: -0.015em;
  text-wrap: balance;
  margin: 0;
}

.page__subtitle {
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  margin: var(--space-1) 0 0;
}

/* ---------------------------------------------------------------------
   Card
   --------------------------------------------------------------------- */

.card {
  background-color: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: var(--shadow-card);
  transition: var(--transition-theme);
}

.card + .card {
  margin-top: var(--space-4);
}

.card__header {
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid var(--color-border);
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--color-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

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

/* ---------------------------------------------------------------------
   Buttons
   --------------------------------------------------------------------- */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-2);
  padding: var(--space-2) var(--space-4);
  font-family: var(--font-ui);
  font-size: var(--text-sm);
  font-weight: 500;
  border-radius: 8px;
  border: 1px solid transparent;
  cursor: pointer;
  transition: var(--transition-theme), filter 0.2s ease;
}

.btn:focus-visible {
  outline: 2px solid var(--color-accent);
  outline-offset: 2px;
}

.btn--primary {
  background-color: var(--color-accent);
  color: var(--color-accent-contrast);
}

.btn--primary:hover {
  filter: brightness(1.08);
  text-decoration: none;
}

.btn--secondary {
  background-color: var(--color-bg);
  border-color: var(--color-border);
  color: var(--color-text);
}

.btn--secondary:hover {
  border-color: var(--color-text-muted);
  text-decoration: none;
}

/* ---------------------------------------------------------------------
   Status pill (stock, order/route state)
   --------------------------------------------------------------------- */

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: 999px;
  font-size: var(--text-xs);
  font-weight: 600;
}

.pill--success {
  background-color: color-mix(in srgb, var(--color-success) 15%, transparent);
  color: var(--color-success);
}

.pill--warning {
  background-color: color-mix(in srgb, var(--color-warning) 15%, transparent);
  color: var(--color-warning);
}

.pill--danger {
  background-color: color-mix(in srgb, var(--color-danger) 15%, transparent);
  color: var(--color-danger);
}

.pill--neutral {
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  color: var(--color-text-muted);
}

/* ---------------------------------------------------------------------
   Forms
   --------------------------------------------------------------------- */

.field {
  margin-bottom: var(--space-4);
  display: flex;
  flex-direction: column;
  gap: var(--space-1);
}

.field label {
  font-size: var(--text-sm);
  font-weight: 500;
  color: var(--color-text-muted);
}

.field input:not([type="checkbox"]):not([type="radio"]),
.field select,
.field textarea {
  width: 100%;
  min-width: 0;
  font-family: var(--font-ui);
  font-size: var(--text-base);
  padding: var(--space-2) var(--space-3);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  background-color: var(--color-bg);
  color: var(--color-text);
  transition: var(--transition-theme), border-color 0.2s ease, box-shadow 0.2s ease;
}

.field input[type="checkbox"],
.field input[type="radio"] {
  width: auto;
  flex-shrink: 0;
}

.field input:focus,
.field select:focus,
.field textarea:focus {
  outline: none;
  border-color: var(--color-accent);
  box-shadow: 0 0 0 3px color-mix(in srgb, var(--color-accent) 18%, transparent);
}

.errorlist {
  list-style: none;
  margin: 0 0 var(--space-2);
  padding: 0;
  color: var(--color-danger);
  font-size: var(--text-xs);
}

.item-rows {
  display: flex;
  flex-direction: column;
  gap: var(--space-3);
  margin-bottom: var(--space-3);
}

.item-row {
  display: grid;
  grid-template-columns: 2fr 1fr 1fr auto;
  gap: var(--space-3);
  align-items: end;
  padding: var(--space-3);
  background-color: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: 8px;
  transition: var(--transition-theme);
}

.item-row .field {
  margin-bottom: 0;
  /* Grid items default to min-width: auto, meaning they can't shrink
     below their content's intrinsic size. The product <select> has
     hundreds of options, some with long names, and without this its
     min-content width can blow out the first column past the row's
     available width - visually shoving quantity/price/remove out of
     view instead of wrapping/truncating within their column. */
  min-width: 0;
}

.item-row__remove {
  display: flex;
  align-items: flex-end;
}

/* ---------------------------------------------------------------------
   Messages (success / error banners)
   --------------------------------------------------------------------- */

.messages {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  flex-direction: column;
  gap: var(--space-2);
  position: fixed;
  top: var(--space-5);
  right: var(--space-5);
  z-index: 1000;
  width: min(360px, calc(100vw - 2 * var(--space-5)));
}

.messages li {
  padding: var(--space-3) var(--space-4);
  border-radius: 8px;
  font-size: var(--text-sm);
  box-shadow: 0 4px 16px rgba(0, 0, 0, 0.18);
  animation: fade-in-down 0.25s ease;
  transition: var(--transition-theme), opacity 0.3s ease, transform 0.3s ease;
  cursor: pointer;
}

.messages li.is-dismissing {
  opacity: 0;
  transform: translateY(-8px);
}

.messages .success {
  background-color: var(--color-surface);
  color: var(--color-success);
  border: 1px solid color-mix(in srgb, var(--color-success) 30%, transparent);
}

.messages .error {
  background-color: var(--color-surface);
  color: var(--color-danger);
  border: 1px solid color-mix(in srgb, var(--color-danger) 30%, transparent);
}

.messages .info {
  background-color: var(--color-surface);
  color: var(--color-text);
  border: 1px solid var(--color-border);
}

@keyframes fade-in-down {
  from {
    opacity: 0;
    transform: translateY(-8px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

/* ---------------------------------------------------------------------
   Footer
   --------------------------------------------------------------------- */

.site-footer {
  padding: var(--space-5);
  text-align: center;
  font-size: var(--text-sm);
  color: var(--color-text-muted);
  transition: var(--transition-theme);
}

.site-footer a {
  color: var(--color-text-muted);
}

.site-footer a:hover {
  color: var(--color-text);
}