/*
 * Standard Form Design Component (Client-Facing)
 *
 * CSS variables (define on container):
 *   --sf-bg:      background color
 *   --sf-text:    text/foreground color
 *   --sf-accent:  accent color (borders, buttons, focus states)
 *
 * Future extensibility:
 *   --sf-font-family:      font family override
 *   --sf-font-size-title:  title font size
 *   --sf-font-size-input:  input font size
 *   --sf-border-radius:    global border radius
 *   --sf-spacing:          spacing multiplier
 *
 * Class prefix: .standard-form__ (client-facing forms)
 */

.standard-form {
  background-color: var(--sf-bg);
  color: var(--sf-text);
  font-family: var(--sf-font-family, 'Plus Jakarta Sans', system-ui, sans-serif);
}

.standard-form__container {
  width: 100%;
  max-width: 36rem;
}

.standard-form__question {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.standard-form__title {
  color: var(--sf-text);
  font-size: var(--sf-font-size-title, 1.25rem);
  font-weight: 600;
  line-height: 1.4;
  letter-spacing: -0.01em;
}

.standard-form__label-required {
  color: var(--sf-accent);
  margin-left: 0.25rem;
}

/* Text input / Text area */
.standard-form__input {
  width: 100%;
  padding: 0.75rem 0.25rem;
  padding-right: 3rem;
  background-color: transparent;
  border: none;
  border-bottom: 2px solid color-mix(in srgb, var(--sf-accent) 40%, transparent);
  border-radius: 0;
  color: var(--sf-text);
  font-size: var(--sf-font-size-input, 1.125rem);
  outline: none;
  transition: border-color 0.3s ease;
  resize: none;
  overflow: hidden;
}

.standard-form__input::placeholder {
  color: color-mix(in srgb, var(--sf-text) 30%, transparent);
}

.standard-form__input:focus {
  border-bottom-color: var(--sf-accent);
  outline: none;
  box-shadow: none;
}

/* Submit button */
.standard-form__submit {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.875rem 2rem;
  background-color: var(--sf-accent);
  color: var(--sf-bg);
  font-size: 1rem;
  font-weight: 600;
  border: none;
  border-radius: var(--sf-border-radius, 0.5rem);
  cursor: pointer;
  transition: all 0.15s ease;
}

.standard-form__submit:hover {
  filter: brightness(1.1);
  transform: translateY(-1px);
}

.standard-form__submit:active {
  transform: translateY(0);
}

.standard-form__submit:disabled {
  opacity: 0.6;
  cursor: not-allowed;
  transform: none;
}

/* Loading spinner in button */
.standard-form__submit-spinner {
  width: 1.25rem;
  height: 1.25rem;
  border: 2px solid currentColor;
  border-top-color: transparent;
  border-radius: 50%;
  animation: sf-spin 0.6s linear infinite;
}

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

/* Footer */
.standard-form__footer {
  color: var(--sf-text);
  opacity: 0.4;
}

/* Completed state */
.standard-form__completed {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100%;
  text-align: center;
}

.standard-form__completed-icon {
  background-color: color-mix(in srgb, var(--sf-accent) 20%, transparent);
}

.standard-form__completed-icon svg {
  color: var(--sf-accent);
}

.standard-form__completed-title {
  color: var(--sf-text);
}

.standard-form__completed-text {
  color: var(--sf-text);
  opacity: 0.6;
}

.standard-form__field-error {
  color: #ef4444;
  font-size: 0.875rem;
  margin-top: 0.25rem;
}