/*
 * Vector-First Design Standard v1.0 — Component primitives.
 * Topbar, container, card, grid, table, pill, form, button, modal.
 * Every selector is theme-aware via html[data-theme="..."] overrides.
 */

/* ========================= Topbar ========================= */

.topbar {
  display: grid;
  grid-template-columns: auto 1fr auto;
  align-items: center;
  gap: var(--space-5);
  padding: var(--space-4) var(--space-5);
  border-bottom: 1px solid rgba(255, 255, 255, var(--border-base));
  background: rgba(0, 0, 0, var(--surface-glass));
  position: sticky;
  top: 0;
  z-index: var(--z-overlay);
  backdrop-filter: blur(8px);
  -webkit-backdrop-filter: blur(8px);
  transition: background-color var(--motion-base), border-color var(--motion-base);
}

html[data-theme="light"] .topbar {
  background: rgba(255, 255, 255, 0.95);
  border-bottom-color: rgba(0, 0, 0, var(--border-base));
}

.topbar__brand {
  font-family: var(--font-serif);
  font-size: var(--fs-md);
  font-weight: 600;
  letter-spacing: 0;
  margin: 0;
}

.topbar__primary {
  display: flex;
  gap: var(--space-2);
  flex-wrap: wrap;
  justify-self: start;
}

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

/* ========================= Tabs (topbar nav) ========================= */

.tab,
.ghost {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, var(--border-strong));
  color: inherit;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-sm);
  transition: background-color var(--motion-fast), color var(--motion-fast), border-color var(--motion-fast);
}

html[data-theme="light"] .tab,
html[data-theme="light"] .ghost {
  border-color: rgba(0, 0, 0, var(--border-strong));
}

.tab:hover,
.ghost:hover {
  border-color: currentColor;
}

.tab[aria-selected="true"] {
  background: var(--fg-dark);
  color: var(--bg-dark);
  border-color: var(--fg-dark);
}

html[data-theme="light"] .tab[aria-selected="true"] {
  background: #1a1a1a;
  color: #ffffff;
  border-color: #1a1a1a;
}

/* ========================= Container ========================= */

.container {
  max-width: var(--width-content);
  margin: 0 auto;
  padding: var(--space-7) var(--space-5);
}

main {
  padding: var(--space-6) var(--space-5);
  max-width: var(--width-content);
  margin: 0 auto;
  width: 100%;
}

section {
  margin-bottom: var(--space-7);
}

/* ========================= Card ========================= */

.card {
  border: 1px solid rgba(255, 255, 255, var(--border-base));
  border-radius: var(--radius);
  padding: var(--space-4);
  background: rgba(255, 255, 255, var(--surface-raised));
}

html[data-theme="light"] .card {
  border-color: rgba(0, 0, 0, var(--border-base));
  background: rgba(0, 0, 0, var(--surface-raised));
}

.card__eyebrow {
  margin: 0 0 var(--space-2);
  font-size: var(--fs-sm);
  font-weight: 600;
  color: rgba(255, 255, 255, var(--text-secondary));
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
}

html[data-theme="light"] .card__eyebrow {
  color: rgba(0, 0, 0, var(--text-secondary));
}

.card__metric {
  font-family: var(--font-mono);
  font-size: var(--fs-xl);
  font-weight: 600;
  margin: 0;
}

/* ========================= Grid ========================= */

.grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(240px, 1fr));
  gap: var(--space-4);
}

.grid--wide {
  grid-template-columns: repeat(auto-fill, minmax(320px, 1fr));
}

/* ========================= Tables ========================= */

table {
  width: 100%;
  border-collapse: collapse;
  font-size: var(--fs-sm);
}

th, td {
  text-align: left;
  padding: var(--space-2) var(--space-3);
  border-bottom: 1px solid rgba(255, 255, 255, var(--border-soft));
}

html[data-theme="light"] th,
html[data-theme="light"] td {
  border-bottom-color: rgba(0, 0, 0, var(--border-soft));
}

th {
  font-size: var(--fs-xs);
  text-transform: uppercase;
  letter-spacing: var(--ls-wide);
  color: rgba(255, 255, 255, var(--text-secondary));
  font-weight: 600;
}

html[data-theme="light"] th {
  color: rgba(0, 0, 0, var(--text-secondary));
}

/* ========================= Status pills ========================= */

.pill {
  display: inline-flex;
  align-items: center;
  gap: var(--space-1);
  padding: 2px var(--space-2);
  border-radius: var(--radius-pill);
  font-size: var(--fs-xs);
  border: 1px solid currentColor;
  font-weight: 500;
  white-space: nowrap;
}

.pill--ok    { color: var(--status-ok); }
.pill--warn  { color: var(--status-warn); }
.pill--alert { color: var(--status-alert); }
.pill--info  { color: var(--status-info); }

/* ========================= Forms ========================= */

form {
  display: grid;
  gap: var(--space-3);
  max-width: var(--width-form);
}

label {
  display: grid;
  gap: var(--space-1);
  font-size: var(--fs-sm);
  font-weight: 500;
}

input,
select,
textarea {
  font-family: inherit;
  font-size: var(--fs-base);
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  border: 1px solid rgba(255, 255, 255, var(--border-strong));
  background: rgba(255, 255, 255, var(--surface-raised));
  color: inherit;
  transition: border-color var(--motion-fast);
}

html[data-theme="light"] input,
html[data-theme="light"] select,
html[data-theme="light"] textarea {
  border-color: rgba(0, 0, 0, var(--border-strong));
  background: rgba(0, 0, 0, var(--surface-raised));
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: currentColor;
}

textarea { min-height: 96px; resize: vertical; }

/* ========================= Buttons ========================= */

.btn,
button[type="submit"],
button.primary {
  background: var(--fg-dark);
  color: var(--bg-dark);
  border: none;
  border-radius: var(--radius);
  padding: var(--space-3) var(--space-4);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-sm);
  font-weight: 500;
  transition: opacity var(--motion-fast);
}

.btn:hover,
button[type="submit"]:hover,
button.primary:hover {
  opacity: 0.85;
}

.btn:disabled,
button[type="submit"]:disabled,
button.primary:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

html[data-theme="light"] .btn,
html[data-theme="light"] button[type="submit"],
html[data-theme="light"] button.primary {
  background: #1a1a1a;
  color: #ffffff;
}

/* CTA pill — used for "primary action in nav bar" */
.btn--cta {
  border-radius: var(--radius-pill);
  padding: var(--space-3) var(--space-5);
  font-weight: 600;
}

/* ========================= Utility classes ========================= */

.muted {
  color: rgba(255, 255, 255, var(--text-secondary));
  font-size: var(--fs-sm);
}

html[data-theme="light"] .muted {
  color: rgba(0, 0, 0, var(--text-secondary));
}

.eyebrow {
  font-size: var(--fs-xs);
  letter-spacing: var(--ls-eyebrow);
  text-transform: uppercase;
  color: rgba(255, 255, 255, var(--text-muted));
}

html[data-theme="light"] .eyebrow {
  color: rgba(0, 0, 0, var(--text-muted));
}

.small { font-size: var(--fs-xs); }
.text-mono { font-family: var(--font-mono); }
.text-serif { font-family: var(--font-serif); }

.stack-1 > * + * { margin-top: var(--space-1); }
.stack-2 > * + * { margin-top: var(--space-2); }
.stack-3 > * + * { margin-top: var(--space-3); }
.stack-4 > * + * { margin-top: var(--space-4); }
.stack-5 > * + * { margin-top: var(--space-5); }

/* ========================= Footer ========================= */

.footnote {
  padding: var(--space-4) var(--space-5);
  border-top: 1px solid rgba(255, 255, 255, var(--border-base));
  color: rgba(255, 255, 255, var(--text-muted));
  font-size: var(--fs-xs);
  text-align: center;
}

html[data-theme="light"] .footnote {
  border-top-color: rgba(0, 0, 0, var(--border-base));
  color: rgba(0, 0, 0, var(--text-muted));
}

/* ========================= Theme switcher button ========================= */

.theme-switch {
  background: transparent;
  border: 1px solid rgba(255, 255, 255, var(--border-strong));
  color: inherit;
  padding: var(--space-2) var(--space-3);
  border-radius: var(--radius);
  cursor: pointer;
  font-family: inherit;
  font-size: var(--fs-sm);
  display: inline-flex;
  align-items: center;
  gap: var(--space-2);
  transition: border-color var(--motion-fast);
}

.theme-switch:hover { border-color: currentColor; }

html[data-theme="light"] .theme-switch {
  border-color: rgba(0, 0, 0, var(--border-strong));
}

.theme-switch__icon { width: 16px; height: 16px; }

/* ========================= Responsive ========================= */

@media (max-width: 720px) {
  .topbar {
    grid-template-columns: 1fr;
    gap: var(--space-3);
  }
  .topbar__primary { overflow-x: auto; }
  h1 { font-size: var(--fs-2xl); }
  h2 { font-size: var(--fs-xl); }
}