/* =========================================================
   Shared components – forms, alerts, loading (multiple pages)
   ========================================================= */

form {
  display: flex;
  flex-direction: column;
  gap: var(--space-lg);
}

label {
  font-size: var(--text-sm);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.04em;
}

input,
select,
textarea {
  width: 100%;
  font-size: var(--text);
  padding: var(--space) var(--space-md);
  border: 1px solid var(--border);
  background: var(--surface);
  transition: border-color var(--ease);
  box-sizing: border-box;
}

input:focus,
select:focus,
textarea:focus {
  outline: none;
  border-color: var(--accent);
}

input[type="checkbox"],
input[type="radio"] {
  width: auto;
  accent-color: var(--accent);
}

button,
input[type="submit"] {
  cursor: pointer;
  background: var(--fg);
  color: var(--fg-inverse);
  border: none;
  padding: var(--space) var(--space-md);
  border-radius: var(--radius);
  font-size: var(--text);
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.05em;
  transition: opacity var(--ease);
  white-space: nowrap;
  -webkit-appearance: none;
  -moz-appearance: none;
  appearance: none;
}

button:hover,
input[type="submit"]:hover {
  opacity: 0.9;
}

.alert {
  background: hsl(3 100% 95%);
  color: hsl(3 70% 35%);
  padding: var(--space-md);
  font-size: var(--text-sm);
}

.alert--fixed {
  position: fixed;
  top: 0;
  left: 0;
  padding: 0 var(--space-xl);
}

.alert--success {
  color: var(--fg);
}

.alert--error {
  background: #ffebee;
  color: #c62828;
  padding: var(--space);
  margin-bottom: var(--space);
  font-size: var(--text-sm);
}

.loading {
  display: none;
  position: fixed;
  inset: 0;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  z-index: 999;
  background-color: var(--bg);
  gap: var(--space-md);
}

.loading__spinner {
  width: 50px;
  height: 50px;
  border: 3px solid #f4f4f4;
  border-top-color: var(--fg);
  border-radius: 50%;
  animation: spin 1s linear infinite;
}

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

@keyframes spin {
  to { transform: rotate(360deg); }
}

.upload-form__price-row {
  display: flex;
  align-items: center;
  gap: var(--space);
  width: 100%;
}

.upload-form__price-row .upload-form__input--price {
  flex: 1;
  min-width: 0;
}

.upload-form__price-free {
  flex-shrink: 0;
}

.input-blink {
  animation: blink 0.4s linear 2;
}

@keyframes blink {
  25% { opacity: 1; }
  50% { opacity: 0; }
  75% { opacity: 1; }
}