/**
 * Form Component Styles
 */

/* ================================
   FORM GROUP
   ================================ */
.form-group {
    margin-bottom: var(--spacing-md);
}

.form-group:last-child {
    margin-bottom: 0;
}

/* ================================
   FORM LABEL
   ================================ */
.form-label {
    display: block;
    margin-bottom: 6px;
    font-size: var(--font-size-sm);
    font-weight: 500;
    color: var(--color-gray-700);
}

.form-label.required::after {
    content: ' *';
    color: var(--color-danger);
}

/* ================================
   FORM CONTROL
   ================================ */
.form-control {
    display: block;
    width: 100%;
    padding: 10px 14px;
    font-family: inherit;
    font-size: var(--font-size-base);
    line-height: 1.5;
    color: var(--color-gray-800);
    background-color: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-md);
    transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-control::placeholder {
    color: var(--color-gray-400);
}

.form-control:focus {
    outline: none;
    border-color: var(--color-primary);
    box-shadow: 0 0 0 3px rgba(59, 130, 246, 0.15);
}

.form-control:disabled,
.form-control[readonly] {
    background-color: var(--color-gray-100);
    cursor: not-allowed;
}

/* Sizes */
.form-control-sm {
    padding: 6px 10px;
    font-size: var(--font-size-sm);
}

.form-control-lg {
    padding: 14px 18px;
    font-size: var(--font-size-lg);
}

/* ================================
   VALIDATION STATES
   ================================ */
.form-control.is-valid {
    border-color: var(--color-success);
}

.form-control.is-valid:focus {
    box-shadow: 0 0 0 3px rgba(34, 197, 94, 0.15);
}

.form-control.is-invalid {
    border-color: var(--color-danger);
}

.form-control.is-invalid:focus {
    box-shadow: 0 0 0 3px rgba(239, 68, 68, 0.15);
}

.valid-feedback {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-success);
    margin-top: 4px;
}

.invalid-feedback {
    display: none;
    font-size: var(--font-size-sm);
    color: var(--color-danger);
    margin-top: 4px;
}

.is-valid~.valid-feedback,
.is-invalid~.invalid-feedback {
    display: block;
}

/* ================================
   TEXTAREA
   ================================ */
textarea.form-control {
    min-height: 100px;
    resize: vertical;
}

/* ================================
   SELECT
   ================================ */
select.form-control {
    appearance: none;
    background-image: url("data:image/svg+xml,%3csvg xmlns='http://www.w3.org/2000/svg' fill='none' viewBox='0 0 20 20'%3e%3cpath stroke='%236b7280' stroke-linecap='round' stroke-linejoin='round' stroke-width='1.5' d='M6 8l4 4 4-4'/%3e%3c/svg%3e");
    background-position: right 12px center;
    background-repeat: no-repeat;
    background-size: 16px 12px;
    padding-right: 40px;
}

/* ================================
   CHECKBOX & RADIO
   ================================ */
.form-check {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
    margin-bottom: var(--spacing-sm);
}

.form-check-input {
    width: 18px;
    height: 18px;
    margin: 0;
    flex-shrink: 0;
    cursor: pointer;
    accent-color: var(--color-primary);
}

.form-check-label {
    font-size: var(--font-size-sm);
    color: var(--color-gray-700);
    cursor: pointer;
}

/* Custom checkbox */
.form-check-custom {
    position: relative;
    padding-left: 28px;
}

.form-check-custom input {
    position: absolute;
    opacity: 0;
    cursor: pointer;
}

.form-check-custom .checkmark {
    position: absolute;
    left: 0;
    top: 50%;
    transform: translateY(-50%);
    width: 20px;
    height: 20px;
    background: var(--color-white);
    border: 1px solid var(--color-gray-300);
    border-radius: var(--radius-sm);
    transition: all var(--transition-fast);
}

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

.form-check-custom .checkmark::after {
    content: '';
    position: absolute;
    display: none;
    left: 7px;
    top: 3px;
    width: 5px;
    height: 10px;
    border: solid white;
    border-width: 0 2px 2px 0;
    transform: rotate(45deg);
}

.form-check-custom input:checked~.checkmark::after {
    display: block;
}

/* ================================
   SWITCH / TOGGLE
   ================================ */
.form-switch {
    display: flex;
    align-items: center;
    gap: var(--spacing-sm);
}

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

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

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

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

/* ================================
   INPUT GROUP
   ================================ */
.input-group {
    display: flex;
    align-items: stretch;
}

.input-group .form-control {
    flex: 1;
    border-radius: 0;
}

.input-group .form-control:first-child {
    border-top-left-radius: var(--radius-md);
    border-bottom-left-radius: var(--radius-md);
}

.input-group .form-control:last-child {
    border-top-right-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

.input-group-text {
    display: flex;
    align-items: center;
    padding: 10px 14px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-600);
    background: var(--color-gray-100);
    border: 1px solid var(--color-gray-300);
}

.input-group-text:first-child {
    border-right: none;
    border-top-left-radius: var(--radius-md);
    border-bottom-left-radius: var(--radius-md);
}

.input-group-text:last-child {
    border-left: none;
    border-top-right-radius: var(--radius-md);
    border-bottom-right-radius: var(--radius-md);
}

/* ================================
   FORM HINT / HELP TEXT
   ================================ */
.form-hint {
    display: block;
    margin-top: 4px;
    font-size: var(--font-size-sm);
    color: var(--color-gray-500);
}

/* ================================
   FORM LAYOUT
   ================================ */
.form-row {
    display: flex;
    flex-wrap: wrap;
    gap: var(--spacing-md);
    margin-bottom: var(--spacing-md);
}

.form-row>* {
    flex: 1;
    min-width: 200px;
}

.form-inline {
    display: flex;
    align-items: center;
    gap: var(--spacing-md);
}

/* ================================
   FILE INPUT
   ================================ */
.form-file {
    position: relative;
}

.form-file-input {
    position: absolute;
    width: 100%;
    height: 100%;
    opacity: 0;
    cursor: pointer;
}

.form-file-label {
    display: flex;
    align-items: center;
    justify-content: center;
    gap: var(--spacing-sm);
    padding: var(--spacing-lg);
    background: var(--color-gray-50);
    border: 2px dashed var(--color-gray-300);
    border-radius: var(--radius-md);
    color: var(--color-gray-500);
    text-align: center;
    cursor: pointer;
    transition: all var(--transition-fast);
}

.form-file-label:hover {
    border-color: var(--color-primary);
    color: var(--color-primary);
}