/* =============================================
   Components — Cards, buttons, form elements
   ============================================= */

/* ── Card ── */
.card {
  background: var(--color-glass);
  backdrop-filter: blur(var(--blur-md)) saturate(180%);
  -webkit-backdrop-filter: blur(var(--blur-md)) saturate(180%);
  border: 1px solid var(--color-glass-border);
  border-radius: var(--radius-lg);
  padding: var(--space-md);
  box-shadow: var(--shadow-glass);
  transition: transform var(--transition-base),
    box-shadow var(--transition-base);
}

.card-header {
  padding-bottom: var(--space-sm);
  margin-bottom: var(--space-md);
  border-bottom: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.card-header h3,
.card-header h4 {
  font-size: var(--font-size-md);
  font-weight: var(--font-weight-semibold);
}

.card-body {
  flex: 1;
}

.card-footer {
  padding-top: var(--space-sm);
  margin-top: var(--space-md);
  border-top: 1px solid var(--color-border);
  display: flex;
  align-items: center;
  justify-content: flex-end;
  gap: var(--space-sm);
}

.card-solid {
  background: var(--color-surface-solid);
  backdrop-filter: none;
  -webkit-backdrop-filter: none;
  border: 1px solid var(--color-border);
}

.card-interactive {
  cursor: pointer;
}

.card-interactive:active {
  transform: scale(0.98);
}

/* ── Buttons ── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  min-height: 44px;
  padding: 0 var(--space-lg);
  border-radius: var(--radius-full);
  font-size: var(--font-size-base);
  font-weight: var(--font-weight-semibold);
  line-height: 1;
  white-space: nowrap;
  cursor: pointer;
  border: none;
  text-decoration: none;
  -webkit-user-select: none;
  user-select: none;
  transition: transform var(--transition-fast),
    background-color var(--transition-fast),
    box-shadow var(--transition-fast),
    opacity var(--transition-fast);
}

.btn:active {
  transform: scale(0.97);
}

.btn:disabled,
.btn[aria-disabled='true'] {
  opacity: 0.4;
  pointer-events: none;
  cursor: not-allowed;
}

.btn-primary {
  background: var(--color-primary);
  color: var(--color-text-inverse);
  box-shadow: var(--shadow-button);
}

.btn-primary:hover {
  background: var(--color-primary-dark);
  box-shadow: var(--shadow-button-hover);
}

.btn-primary:active {
  box-shadow: var(--shadow-sm);
}

.btn-secondary {
  background: var(--color-secondary);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(139, 115, 85, 0.25);
}

.btn-secondary:hover {
  box-shadow: 0 4px 16px rgba(139, 115, 85, 0.35);
}

.btn-outline {
  background: transparent;
  color: var(--color-primary);
  border: 1.5px solid var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary-bg);
}

.btn-ghost {
  background: transparent;
  color: var(--color-primary);
}

.btn-ghost:hover {
  background: var(--color-primary-bg);
}

.btn-danger {
  background: var(--color-danger);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(217, 68, 53, 0.25);
}

.btn-danger:hover {
  box-shadow: 0 4px 16px rgba(217, 68, 53, 0.35);
}

.btn-success {
  background: var(--color-success);
  color: var(--color-text-inverse);
  box-shadow: 0 2px 8px rgba(90, 158, 62, 0.25);
}

.btn-glass {
  background: var(--color-glass);
  backdrop-filter: blur(var(--blur-sm)) saturate(160%);
  -webkit-backdrop-filter: blur(var(--blur-sm)) saturate(160%);
  border: 1px solid var(--color-glass-border);
  color: var(--color-text);
  box-shadow: var(--shadow-sm);
}

.btn-glass:hover {
  background: var(--color-glass-hover);
}

.btn-gradient {
  background: var(--gradient-primary);
  color: var(--color-text-inverse);
  box-shadow: 0 4px 16px rgba(160, 120, 80, 0.30);
}

.btn-sm {
  min-height: 36px;
  padding: 0 var(--space-md);
  font-size: var(--font-size-sm);
}

.btn-lg {
  min-height: 52px;
  padding: 0 var(--space-xl);
  font-size: var(--font-size-md);
}

.btn-icon {
  min-height: 44px;
  min-width: 44px;
  padding: 0;
  border-radius: var(--radius-full);
}

.btn-icon.btn-sm {
  min-height: 36px;
  min-width: 36px;
}

.btn-block {
  display: flex;
  width: 100%;
}

/* ── Form elements ── */
.input,
.textarea,
.select {
  display: block;
  width: 100%;
  min-height: 44px;
  padding: 12px var(--space-md);
  background: var(--color-bg);
  border: 1px solid var(--color-border-strong);
  border-radius: var(--radius-md);
  font-size: var(--font-size-md);
  color: var(--color-text);
  transition: border-color var(--transition-fast),
    background var(--transition-fast),
    box-shadow var(--transition-fast);
}

.input:hover,
.textarea:hover,
.select:hover {
  background: var(--color-surface-solid);
}

.input:focus,
.textarea:focus,
.select:focus {
  background: var(--color-surface-solid);
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px var(--color-focus-ring);
  outline: 0;
}

.input-error {
  border-color: var(--color-danger);
}

.input-error:focus {
  box-shadow: 0 0 0 3px rgba(255, 59, 48, 0.2);
}

.textarea {
  min-height: 100px;
  resize: vertical;
}

.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 24 24' fill='none' stroke='%238E8E93' stroke-width='2.5' stroke-linecap='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right var(--space-md) center;
  padding-right: calc(var(--space-md) + 20px);
}

.input-group {
  display: flex;
  flex-direction: column;
  gap: var(--space-xs);
}

.input-group label {
  font-size: var(--font-size-sm);
  font-weight: var(--font-weight-medium);
  color: var(--color-text-secondary);
  padding-left: var(--space-xs);
}

.input-group .input-hint {
  font-size: var(--font-size-xs);
  color: var(--color-text-tertiary);
  padding-left: var(--space-xs);
}

.input-group .input-error-text {
  font-size: var(--font-size-xs);
  color: var(--color-danger);
  padding-left: var(--space-xs);
}