/* ============================================================
   QuoteStation — Global Reset, Base & Shared Utilities
   ============================================================ */

*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

html, body {
  height: 100vh;
  overflow: hidden;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  line-height: var(--leading-normal);
  color: var(--color-text);
  background: var(--color-bg);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
  letter-spacing: -0.01em;
}

.screen {
  display: none;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
}

.screen.active {
  display: flex;
  flex-direction: column;
  animation: screen-enter 0.2s var(--ease-out) both;
}

/* ─── Named slide classes (for JS-driven transitions) ─── */
.screen.slide-in-right  { animation: slide-in-right  0.22s var(--ease-out) forwards; }
.screen.slide-out-left  { animation: slide-out-left  0.22s var(--ease-out) forwards; }
.screen.slide-in-left   { animation: slide-in-left   0.22s var(--ease-out) forwards; }
.screen.slide-out-right { animation: slide-out-right 0.22s var(--ease-out) forwards; }

@keyframes screen-enter    { from { opacity: 0; transform: translateX(12px); } to { opacity: 1; transform: translateX(0); } }
@keyframes slide-in-right  { from { transform: translateX(32px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes slide-out-left  { from { transform: translateX(0);    opacity: 1; } to { transform: translateX(-24px); opacity: 0; } }
@keyframes slide-in-left   { from { transform: translateX(-24px); opacity: 0; } to { transform: translateX(0); opacity: 1; } }
@keyframes slide-out-right { from { transform: translateX(0);    opacity: 1; } to { transform: translateX(32px); opacity: 0; } }

.kbd {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  min-width: 20px;
  height: 20px;
  padding: 0 var(--space-1);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  font-weight: var(--weight-medium);
  line-height: 1;
  color: var(--color-text-secondary);
  background: var(--color-kbd-bg);
  border: 1px solid var(--color-kbd-border);
  border-radius: 3px;
  box-shadow: 0 1px 0 var(--color-kbd-border);
}

.no-transitions, .no-transitions * { transition: none !important; }

/* ─── Loading Screen ─── */
.loading {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 100vw;
  height: 100vh;
  background: var(--color-bg);
}

.loading-content {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-4);
}

.loading-spinner {
  width: 24px;
  height: 24px;
  border: 2px solid var(--color-border);
  border-top-color: var(--color-accent);
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

.loading-text {
  font-size: var(--text-sm);
  color: var(--color-text-tertiary);
}

/* ─── Keyframes ─── */
@keyframes spin {
  to { transform: rotate(360deg); }
}

@keyframes pulse-dot {
  0%, 100% { box-shadow: 0 0 0 2px var(--color-danger-subtle); }
  50%       { box-shadow: 0 0 0 4px var(--color-danger-subtle); }
}

@keyframes flash-green {
  0%   { background: var(--color-success-subtle); }
  100% { background: transparent; }
}

@keyframes flash-red {
  0%   { background: var(--color-danger-subtle); }
  100% { background: transparent; }
}

@keyframes flash-required {
  0%, 100% { background: transparent; }
  50%      { background: var(--color-danger-subtle); }
}