/* ============================================
   ARTH Form Components
   ============================================ */

/* ===================
   Form Group
   =================== */

.form-group {
    margin-bottom: var(--space-5);
}

.form-label {
    display: block;
    margin-bottom: var(--space-2);
    font-size: var(--font-size-sm);
    font-weight: var(--font-weight-medium);
    color: var(--color-text-primary);
}

.form-label.required::after {
    content: '*';
    color: var(--color-danger-500);
    margin-left: var(--space-1);
}

.form-hint {
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

/* ===================
   Text Input
   =================== */

.form-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-surface-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-default);
}

.form-input::placeholder {
    color: var(--color-text-tertiary);
}

.form-input:hover {
    border-color: var(--color-border-medium);
}

.form-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

/* Size variants */
.form-input-sm {
    padding: var(--space-2) var(--space-3);
    font-size: var(--font-size-xs);
}

.form-input-lg {
    padding: var(--space-4) var(--space-5);
    font-size: var(--font-size-base);
}

/* States */
.form-input.error {
    border-color: var(--color-danger-500);
    background: var(--color-danger-100);
}

.form-input.error:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.1);
}

.form-input.success {
    border-color: var(--color-success-500);
}

.form-input:disabled {
    background: var(--color-neutral-100);
    cursor: not-allowed;
    opacity: 0.7;
}

/* Error message */
.form-error {
    display: flex;
    align-items: center;
    gap: var(--space-1);
    margin-top: var(--space-2);
    font-size: var(--font-size-xs);
    color: var(--color-danger-500);
}

.form-error svg {
    width: 14px;
    height: 14px;
}

/* ===================
   Input with Icon
   =================== */

.input-group {
    position: relative;
    display: flex;
    align-items: stretch;
}

.input-group .form-input {
    flex: 1;
}

.input-icon {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    color: var(--color-text-tertiary);
    pointer-events: none;
}

.input-icon.left {
    left: var(--space-3);
}

.input-icon.right {
    right: var(--space-3);
}

.input-group.has-icon-left .form-input {
    padding-left: 40px;
}

.input-group.has-icon-right .form-input {
    padding-right: 40px;
}

/* Input addon */
.input-addon {
    display: flex;
    align-items: center;
    padding: 0 var(--space-3);
    background: var(--color-neutral-100);
    border: 1px solid var(--color-border-light);
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    white-space: nowrap;
}

.input-addon:first-child {
    border-right: none;
    border-radius: var(--radius-lg) 0 0 var(--radius-lg);
}

.input-addon:last-child {
    border-left: none;
    border-radius: 0 var(--radius-lg) var(--radius-lg) 0;
}

.input-group .form-input:not(:first-child) {
    border-top-left-radius: 0;
    border-bottom-left-radius: 0;
}

.input-group .form-input:not(:last-child) {
    border-top-right-radius: 0;
    border-bottom-right-radius: 0;
}

/* ===================
   Floating Label
   =================== */

.form-floating {
    position: relative;
}

.form-floating .form-input {
    padding-top: var(--space-5);
    padding-bottom: var(--space-2);
}

.form-floating .form-label {
    position: absolute;
    top: 50%;
    left: var(--space-4);
    transform: translateY(-50%);
    margin: 0;
    color: var(--color-text-tertiary);
    pointer-events: none;
    transition: all var(--transition-fast) var(--ease-default);
}

.form-floating .form-input:focus~.form-label,
.form-floating .form-input:not(:placeholder-shown)~.form-label {
    top: var(--space-3);
    font-size: var(--font-size-xs);
    color: var(--color-primary-500);
}

/* ===================
   Select
   =================== */

.form-select {
    appearance: none;
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-right: 40px;
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-surface-card);
    background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%2364748b' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right var(--space-3) center;
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    cursor: pointer;
    transition: all var(--transition-fast) var(--ease-default);
}

.form-select:hover {
    border-color: var(--color-border-medium);
}

.form-select:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

/* ===================
   Checkbox & Radio
   =================== */

.form-check {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    margin-bottom: var(--space-2);
    cursor: pointer;
}

.form-check-input {
    appearance: none;
    width: 18px;
    height: 18px;
    border: 2px solid var(--color-border-medium);
    border-radius: var(--radius-sm);
    cursor: pointer;
    position: relative;
    flex-shrink: 0;
    transition: all var(--transition-fast) var(--ease-default);
}

.form-check-input[type="radio"] {
    border-radius: var(--radius-full);
}

.form-check-input:hover {
    border-color: var(--color-primary-500);
}

.form-check-input:checked {
    background: var(--color-primary-600);
    border-color: var(--color-primary-600);
}

.form-check-input:checked::after {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    transform: translate(-50%, -50%);
}

.form-check-input[type="checkbox"]:checked::after {
    width: 5px;
    height: 9px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: translate(-50%, -60%) rotate(45deg);
}

.form-check-input[type="radio"]:checked::after {
    width: 8px;
    height: 8px;
    background: white;
    border-radius: var(--radius-full);
}

.form-check-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    cursor: pointer;
    user-select: none;
}

/* ===================
   Toggle Switch
   =================== */

.form-switch {
    display: flex;
    align-items: center;
    gap: var(--space-3);
    cursor: pointer;
}

.form-switch-input {
    appearance: none;
    width: 44px;
    height: 24px;
    background: var(--color-neutral-300);
    border-radius: var(--radius-full);
    position: relative;
    cursor: pointer;
    flex-shrink: 0;
    transition: background var(--transition-fast) var(--ease-default);
}

.form-switch-input::after {
    content: '';
    position: absolute;
    top: 2px;
    left: 2px;
    width: 20px;
    height: 20px;
    background: white;
    border-radius: var(--radius-full);
    box-shadow: var(--shadow-sm);
    transition: transform var(--transition-fast) var(--ease-spring);
}

.form-switch-input:checked {
    background: var(--color-primary-600);
}

.form-switch-input:checked::after {
    transform: translateX(20px);
}

.form-switch-input:focus {
    outline: none;
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

/* ===================
   Textarea
   =================== */

.form-textarea {
    width: 100%;
    min-height: 120px;
    padding: var(--space-3) var(--space-4);
    font-size: var(--font-size-sm);
    color: var(--color-text-primary);
    background: var(--color-surface-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    resize: vertical;
    transition: all var(--transition-fast) var(--ease-default);
}

.form-textarea:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

/* ===================
   OTP Input
   =================== */

.otp-input-group {
    display: flex;
    gap: var(--space-3);
    justify-content: center;
}

.otp-input {
    width: 50px;
    height: 56px;
    text-align: center;
    font-size: var(--font-size-xl);
    font-weight: var(--font-weight-semibold);
    border: 2px solid var(--color-border-light);
    border-radius: var(--radius-lg);
    transition: all var(--transition-fast) var(--ease-default);
}

.otp-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.otp-input.filled {
    border-color: var(--color-primary-500);
    background: var(--color-primary-50);
}

/* ===================
   File Upload
   =================== */

.file-upload {
    position: relative;
}

.file-upload-dropzone {
    padding: var(--space-8);
    border: 2px dashed var(--color-border-medium);
    border-radius: var(--radius-xl);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast) var(--ease-default);
}

.file-upload-dropzone:hover {
    border-color: var(--color-primary-500);
    background: var(--color-primary-50);
}

.file-upload-dropzone.dragover {
    border-color: var(--color-primary-500);
    background: var(--color-primary-50);
}

.file-upload-icon {
    width: 48px;
    height: 48px;
    margin: 0 auto var(--space-4);
    color: var(--color-text-tertiary);
}

.file-upload-text {
    font-size: var(--font-size-sm);
    color: var(--color-text-secondary);
    margin-bottom: var(--space-2);
}

.file-upload-text strong {
    color: var(--color-primary-500);
}

.file-upload-hint {
    font-size: var(--font-size-xs);
    color: var(--color-text-tertiary);
}

.file-upload input[type="file"] {
    position: absolute;
    inset: 0;
    opacity: 0;
    cursor: pointer;
}

/* ===================
   Search Input
   =================== */

.search-input-wrapper {
    position: relative;
}

.search-input {
    width: 100%;
    padding: var(--space-3) var(--space-4);
    padding-left: 44px;
    font-size: var(--font-size-sm);
    background: var(--color-surface-card);
    border: 1px solid var(--color-border-light);
    border-radius: var(--radius-full);
    transition: all var(--transition-fast) var(--ease-default);
}

.search-input:focus {
    outline: none;
    border-color: var(--color-primary-500);
    box-shadow: 0 0 0 3px rgba(26, 54, 93, 0.1);
}

.search-input-icon {
    position: absolute;
    left: var(--space-4);
    top: 50%;
    transform: translateY(-50%);
    width: 18px;
    height: 18px;
    color: var(--color-text-tertiary);
    pointer-events: none;
}