/* ==========================================================================
   Form Element Styles
   ========================================================================== */

/* --- Form Group --- */
.form-group {
    margin-bottom: 1rem;
}

.form-group label {
    display: block;
    margin-bottom: 0.375rem;
    font-size: 0.875rem;
    font-weight: 500;
    color: var(--text);
}

.form-group .form-hint {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    color: var(--text-light);
}

/* --- Inputs, Select, Textarea --- */
input[type="text"],
input[type="password"],
input[type="email"],
input[type="number"],
input[type="tel"],
input[type="url"],
input[type="search"],
input[type="date"],
input[type="datetime-local"],
input[type="time"],
select,
textarea {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    line-height: 1.5;
    color: var(--text);
    background-color: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    transition: border-color var(--transition), box-shadow var(--transition);
    outline: none;
    appearance: none;
}

input[type="text"]:focus,
input[type="password"]:focus,
input[type="email"]:focus,
input[type="number"]:focus,
input[type="tel"]:focus,
input[type="url"]:focus,
input[type="search"]:focus,
input[type="date"]:focus,
input[type="datetime-local"]:focus,
input[type="time"]:focus,
select:focus,
textarea:focus {
    border-color: var(--primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

input:disabled,
select:disabled,
textarea:disabled {
    background-color: #f8fafc;
    color: var(--text-light);
    cursor: not-allowed;
}

input::placeholder,
textarea::placeholder {
    color: var(--text-light);
}

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

select {
    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='%2364748b' d='M6 8L1 3h10z'/%3E%3C/svg%3E");
    background-repeat: no-repeat;
    background-position: right 0.75rem center;
    padding-right: 2rem;
}

/* --- Form Row (horizontal layout) --- */
.form-row {
    display: flex;
    gap: 1rem;
    flex-wrap: wrap;
}

.form-row .form-group {
    flex: 1;
    min-width: 0;
}

.form-row .form-group.col-auto {
    flex: 0 0 auto;
}

.form-row .form-group.col-2 { flex: 0 0 calc(50% - 0.5rem); }
.form-row .form-group.col-3 { flex: 0 0 calc(33.333% - 0.667rem); }
.form-row .form-group.col-4 { flex: 0 0 calc(25% - 0.75rem); }

/* --- Inline Form --- */
.form-inline {
    display: flex;
    align-items: flex-end;
    gap: 0.75rem;
    flex-wrap: wrap;
}

.form-inline .form-group {
    margin-bottom: 0;
}

/* --- Checkbox & Radio --- */
.form-check {
    display: flex;
    align-items: center;
    gap: 0.5rem;
    margin-bottom: 0.375rem;
    cursor: pointer;
}

.form-check input[type="checkbox"],
.form-check input[type="radio"] {
    width: 18px;
    height: 18px;
    margin: 0;
    cursor: pointer;
    accent-color: var(--primary);
    flex-shrink: 0;
}

.form-check label {
    margin-bottom: 0;
    font-weight: 400;
    cursor: pointer;
    user-select: none;
}

.form-check-inline {
    display: inline-flex;
    margin-right: 1rem;
}

/* Custom checkbox */
.checkbox-custom {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.checkbox-custom input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.checkbox-custom .checkmark {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-dark);
    border-radius: 3px;
    background-color: var(--bg-white);
    transition: all var(--transition);
    flex-shrink: 0;
    position: relative;
}

.checkbox-custom input:checked + .checkmark {
    background-color: var(--primary);
    border-color: var(--primary);
}

.checkbox-custom input:checked + .checkmark::after {
    content: '';
    position: absolute;
    left: 5px;
    top: 1px;
    width: 5px;
    height: 10px;
    border: solid #fff;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

/* Custom radio */
.radio-custom {
    position: relative;
    display: flex;
    align-items: center;
    gap: 0.5rem;
    cursor: pointer;
    user-select: none;
}

.radio-custom input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
    height: 0;
    width: 0;
}

.radio-custom .radiomark {
    display: inline-block;
    width: 18px;
    height: 18px;
    border: 2px solid var(--border-dark);
    border-radius: 50%;
    background-color: var(--bg-white);
    transition: all var(--transition);
    flex-shrink: 0;
    position: relative;
}

.radio-custom input:checked + .radiomark {
    border-color: var(--primary);
}

.radio-custom input:checked + .radiomark::after {
    content: '';
    position: absolute;
    top: 3px;
    left: 3px;
    width: 8px;
    height: 8px;
    border-radius: 50%;
    background-color: var(--primary);
}

/* --- File Input --- */
.form-file {
    position: relative;
}

.form-file input[type="file"] {
    display: block;
    width: 100%;
    padding: 0.5rem 0.75rem;
    font-size: 0.875rem;
    color: var(--text-secondary);
    background-color: var(--bg-white);
    border: 1px solid var(--border);
    border-radius: var(--radius);
    cursor: pointer;
}

.form-file input[type="file"]::-webkit-file-upload-button {
    padding: 0.375rem 0.75rem;
    margin-right: 0.75rem;
    font-size: 0.8125rem;
    color: var(--text);
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-radius: var(--radius-sm);
    cursor: pointer;
    transition: background-color var(--transition);
}

.form-file input[type="file"]::-webkit-file-upload-button:hover {
    background-color: var(--border);
}

/* Drop zone for drag-and-drop file upload */
.drop-zone {
    display: flex;
    flex-direction: column;
    align-items: center;
    justify-content: center;
    padding: 2rem;
    border: 2px dashed var(--border);
    border-radius: var(--radius-lg);
    background-color: #fafbfc;
    cursor: pointer;
    transition: all var(--transition);
    text-align: center;
    color: var(--text-secondary);
    font-size: 0.875rem;
    min-height: 120px;
}

.drop-zone:hover,
.drop-zone.dragover {
    border-color: var(--primary);
    background-color: #f0f7ff;
    color: var(--primary);
}

.drop-zone-icon {
    font-size: 2rem;
    margin-bottom: 0.5rem;
    color: var(--text-light);
}

/* --- Validation States --- */
.is-invalid,
input.is-invalid,
select.is-invalid,
textarea.is-invalid {
    border-color: var(--danger);
}

.is-invalid:focus {
    border-color: var(--danger);
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.invalid-feedback {
    display: block;
    margin-top: 0.25rem;
    font-size: 0.8125rem;
    color: var(--danger);
}

.is-valid,
input.is-valid,
select.is-valid,
textarea.is-valid {
    border-color: var(--success);
}

/* --- Form Actions (button group at bottom) --- */
.form-actions {
    display: flex;
    align-items: center;
    gap: 0.75rem;
    padding-top: 1rem;
    margin-top: 1.5rem;
    border-top: 1px solid var(--border);
}

.form-actions-right {
    justify-content: flex-end;
}

/* --- Required field marker --- */
label .required {
    color: var(--danger);
    margin-left: 2px;
}

/* --- Input Group --- */
.input-group {
    display: flex;
    align-items: stretch;
}

.input-group input {
    border-radius: var(--radius) 0 0 var(--radius);
    flex: 1;
}

.input-group .input-group-append {
    display: flex;
}

.input-group .input-group-append .btn {
    border-radius: 0 var(--radius) var(--radius) 0;
    border-left: none;
}

.input-group .input-group-prepend {
    display: flex;
    align-items: center;
    padding: 0 0.75rem;
    background-color: var(--bg);
    border: 1px solid var(--border);
    border-right: none;
    border-radius: var(--radius) 0 0 var(--radius);
    font-size: 0.875rem;
    color: var(--text-secondary);
}

.input-group .input-group-prepend + input {
    border-radius: 0 var(--radius) var(--radius) 0;
}

/* --- Read-only field (editable=N, is_enable=Y) --- */
.field-group--readonly {
    border-left: 3px solid #e2e8f0;
    padding-left: 0.625rem;
}

.field-group--readonly > label {
    color: var(--text-light, #64748b);
    font-size: 0.8125rem;
}

.field-group--readonly .field-value {
    background-color: #f8fafc;
    border: 1px solid #e2e8f0;
    border-radius: 4px;
    padding: 0.45rem 0.75rem;
    margin: 0;
    min-height: 2.25rem;
    color: var(--text, #1e293b);
    font-size: 0.9375rem;
    line-height: 1.5;
    white-space: pre-wrap;
    word-break: break-word;
    display: flex;
    align-items: center;
}

/* --- Responsive --- */
@media (max-width: 576px) {
    .form-row {
        flex-direction: column;
    }

    .form-row .form-group.col-2,
    .form-row .form-group.col-3,
    .form-row .form-group.col-4 {
        flex: 1 1 100%;
    }

    .form-actions {
        flex-direction: column;
    }

    .form-actions .btn {
        width: 100%;
    }
}