/* Shared shell: reset, buttons, modals, toast. Colors come from variables.css. */

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

html, body {
  margin: 0;
  min-height: 100%;
  background: var(--color-bg);
  color: var(--color-text);
  font-family: var(--font-ui);
  -webkit-text-size-adjust: 100%;
}

body {
  display: flex;
  flex-direction: column;
  min-height: 100vh;
  min-height: 100dvh;
}

.topbar {
  display: flex;
  align-items: center;
  gap: 16px;
  flex-wrap: wrap;
  padding: 12px 16px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--color-border);
}

.brand {
  margin: 0;
  font-size: 1.15rem;
  font-weight: 700;
  letter-spacing: -0.01em;
  color: var(--color-primary);
}

.home-link {
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.85rem;
  padding: 6px 10px;
  border-radius: var(--radius-sm);
  border: 1px solid transparent;
}
.home-link:hover { color: var(--color-text); background: var(--color-hover); }
.home-link:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.stats { display: flex; gap: 16px; margin-left: auto; }
.stat { display: flex; flex-direction: column; align-items: flex-end; line-height: 1.2; }
.stat-label { font-size: 0.65rem; text-transform: uppercase; letter-spacing: 0.06em; color: var(--color-text-muted); }
.stat-value { font-family: var(--font-code); font-size: 0.95rem; font-variant-numeric: tabular-nums; }

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

.btn {
  padding: 7px 14px;
  font: inherit;
  font-size: 0.85rem;
  color: var(--color-text);
  background: transparent;
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: background 0.15s, border-color 0.15s, opacity 0.15s;
}
.btn:hover:not(:disabled) { background: var(--color-hover); border-color: var(--color-primary); }
.btn:disabled { opacity: 0.4; cursor: not-allowed; }
.btn:focus-visible { outline: 2px solid var(--color-accent); outline-offset: 2px; }

.btn-primary {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: var(--color-on-primary);
  font-weight: 600;
}
.btn-primary:hover:not(:disabled) { background: var(--color-primary-hover); border-color: var(--color-primary-hover); }

.btn-icon { padding: 7px 11px; }

.overlay {
  position: fixed;
  inset: 0;
  background: var(--color-overlay);
  display: grid;
  place-items: center;
  padding: 16px;
  z-index: 1000;
}
.overlay[hidden] { display: none; }

.modal {
  width: min(440px, 100%);
  max-height: 85vh;
  overflow: auto;
  padding: 24px;
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius);
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.5);
}
.modal h2 { margin: 0 0 6px; font-size: 1.3rem; color: var(--color-primary); }
.modal-sub { margin: 0 0 18px; color: var(--color-text-muted); font-size: 0.9rem; }
.modal-actions { display: flex; gap: 8px; margin-top: 12px; }

.field { display: flex; flex-direction: column; gap: 8px; }
.field label { font-size: 0.8rem; color: var(--color-text-muted); }
.field input {
  padding: 9px 12px;
  font: inherit;
  color: var(--color-text);
  background: var(--color-bg);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-sm);
}
.field input:focus-visible { outline: 2px solid var(--color-primary); outline-offset: 1px; }

.form-note { margin: 12px 0 0; font-size: 0.82rem; color: var(--color-text-muted); }
.form-note.is-error { color: var(--color-error); }

.toast {
  position: fixed;
  left: 50%;
  bottom: 24px;
  transform: translateX(-50%);
  padding: 10px 18px;
  background: var(--color-surface);
  border: 1px solid var(--color-primary);
  border-radius: var(--radius);
  font-size: 0.85rem;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.4);
  z-index: 1100;
  max-width: calc(100vw - 32px);
  text-align: center;
}
.toast[hidden] { display: none; }

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