/* ═══════════════════════════════════
   Components
   ═══════════════════════════════════ */

/* ─── Form Group ─── */
.form-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.form-group label {
  font-size: 13px;
  font-weight: 500;
  color: var(--color-ink-secondary);
}

.form-group label .required {
  color: var(--color-accent);
  margin-left: 2px;
}

/* ─── Inputs ─── */
.form-input,
.form-select,
.form-textarea {
  width: 100%;
  padding: 12px 16px;
  border: none;
  border-radius: var(--radius);
  background: var(--color-surface-sunken);
  color: var(--color-ink);
  font-size: 15px;
  line-height: 1.5;
  transition: background var(--duration) var(--ease),
              box-shadow var(--duration) var(--ease);
  outline: none;
}

.form-input:hover,
.form-select:hover,
.form-textarea:hover {
  background: #efefef;
}

.form-input:focus,
.form-select:focus,
.form-textarea:focus {
  background: var(--color-surface);
  box-shadow: var(--shadow-input-focus);
}

.form-input.error,
.form-select.error,
.form-textarea.error {
  box-shadow: inset 0 0 0 2px var(--color-error), 0 0 0 4px rgba(255,59,48,0.1);
}

.form-input.valid {
  box-shadow: inset 0 0 0 2px var(--color-success);
}

.form-input::placeholder {
  color: var(--color-ink-muted);
}

.form-error {
  font-size: 13px;
  color: var(--color-error);
  min-height: 1.2em;
  font-weight: 500;
}

.form-textarea {
  min-height: 80px;
  resize: vertical;
}

.form-select {
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='12' height='12' viewBox='0 0 12 12'%3E%3Cpath fill='%2386868b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 14px center;
  padding-right: 40px;
}

/* ─── Radio ─── */
.radio-group {
  display: flex;
  gap: var(--space-sm);
  flex-wrap: wrap;
}

.radio-option {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  cursor: pointer;
  padding: 10px 18px;
  border: none;
  border-radius: var(--radius-full);
  background: var(--color-surface-sunken);
  font-size: 15px;
  font-weight: 500;
  color: var(--color-ink-secondary);
  transition: all var(--duration) var(--ease);
}

.radio-option:hover {
  background: #efefef;
}

.radio-option input[type="radio"] {
  accent-color: var(--color-accent);
}

.radio-option input[type="radio"]:checked + span {
  color: inherit;
  font-weight: 600;
}

/* ─── Checkbox ─── */
.checkbox-option {
  display: flex;
  align-items: flex-start;
  gap: 10px;
  cursor: pointer;
  padding: 10px;
  line-height: 1.5;
  border-radius: var(--radius-sm);
  transition: background var(--duration) var(--ease);
}

.checkbox-option:hover {
  background: var(--color-surface-sunken);
}

.checkbox-option input[type="checkbox"] {
  accent-color: var(--color-accent);
  margin-top: 3px;
  min-width: 18px;
  min-height: 18px;
}

/* ─── Buttons ─── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 12px 24px;
  border: none;
  border-radius: var(--radius-full);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  transition: all var(--duration) var(--ease);
  text-decoration: none;
  min-height: 48px;
  letter-spacing: -0.01em;
}

.btn--primary {
  background: var(--color-ink);
  color: #fff;
}

.btn--primary:hover {
  background: var(--color-ink-secondary);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--primary:active {
  transform: translateY(0);
}

.btn--secondary {
  background: var(--color-surface-sunken);
  color: var(--color-ink);
}

.btn--secondary:hover {
  background: #efefef;
}

.btn--accent {
  background: var(--color-accent);
  color: #fff;
}

.btn--accent:hover {
  background: var(--color-accent-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}

.btn--accent:active {
  transform: translateY(0);
}

.btn--danger {
  background: transparent;
  color: var(--color-error);
  border: 1.5px solid var(--color-error);
  border-radius: var(--radius-full);
}

.btn--danger:hover {
  background: var(--color-error-bg);
}

.btn--sm {
  padding: 8px 16px;
  font-size: 14px;
  min-height: 36px;
}

.btn:disabled {
  opacity: 0.35;
  cursor: not-allowed;
  transform: none;
  box-shadow: none;
}

.btn-row {
  display: flex;
  justify-content: space-between;
  gap: var(--space-md);
  margin-top: var(--space-xl);
  padding-top: var(--space-lg);
}

/* ─── Alerts ─── */
.alert {
  padding: var(--space-md);
  border-radius: var(--radius);
  margin-bottom: var(--space-md);
  font-size: 14px;
  font-weight: 500;
}

.alert--error {
  background: var(--color-error-bg);
  color: var(--color-error);
}

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

.alert--warning {
  background: var(--color-warning-bg);
  color: var(--color-warning);
}

/* ─── Info Box ─── */
.info-box {
  background: var(--color-surface-sunken);
  border-radius: var(--radius);
  padding: var(--space-md) var(--space-lg);
  margin: var(--space-md) 0;
  font-size: 14px;
  color: var(--color-ink-secondary);
  line-height: 1.6;
}

/* ─── Collapsible ─── */
.collapsible-trigger {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  background: none;
  border: none;
  color: var(--color-accent);
  cursor: pointer;
  font-size: 14px;
  font-weight: 600;
  padding: var(--space-sm) 0;
  transition: color var(--duration) var(--ease);
}

.collapsible-trigger:hover {
  color: var(--color-accent-hover);
}

.collapsible-trigger::before {
  content: '\25B6';
  font-size: 0.5rem;
  transition: transform var(--duration) var(--ease);
}

.collapsible-trigger.open::before {
  transform: rotate(90deg);
}

.collapsible-content {
  max-height: 0;
  overflow: hidden;
  transition: max-height 300ms var(--ease);
}

.collapsible-content.open {
  max-height: 2000px;
}

/* ─── Language Selector ─── */
.lang-selector {
  position: relative;
}

.lang-selector__toggle {
  background: none;
  border: 1px solid rgba(255, 255, 255, 0.2);
  border-radius: 6px;
  color: white;
  padding: 6px 12px;
  font-size: 13px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: border-color var(--duration) var(--ease);
}

.lang-selector__toggle:hover {
  border-color: rgba(255, 255, 255, 0.4);
}

.lang-selector__dropdown {
  display: none;
  position: absolute;
  top: 100%;
  right: 0;
  margin-top: 4px;
  background: white;
  border: 1px solid #e0e0e0;
  border-radius: 8px;
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  min-width: 160px;
  z-index: 1000;
  overflow: hidden;
}

.lang-selector__item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  color: #0a0a0a;
  text-decoration: none;
  font-size: 14px;
  transition: background 0.15s;
}

.lang-selector__item:hover {
  background: #f5f5f5;
}

.lang-selector__item--active {
  background: #f5f5f5;
  font-weight: 600;
}

.lang-selector__flag {
  width: 20px;
  height: 14px;
  border-radius: 2px;
  object-fit: cover;
}