/* 유틸리티 클래스들 */

/* 텍스트 정렬 */
.text-center { text-align: center; }
.text-left { text-align: left; }
.text-right { text-align: right; }
.text-justify { text-align: justify; }

/* 마진 */
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 0.25rem; }
.mt-2 { margin-top: 0.5rem; }
.mt-3 { margin-top: 1rem; }
.mt-4 { margin-top: 1.5rem; }
.mt-5 { margin-top: 3rem; }

.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 0.25rem; }
.mb-2 { margin-bottom: 0.5rem; }
.mb-3 { margin-bottom: 1rem; }
.mb-4 { margin-bottom: 1.5rem; }
.mb-5 { margin-bottom: 3rem; }

.ml-0 { margin-left: 0; }
.ml-1 { margin-left: 0.25rem; }
.ml-2 { margin-left: 0.5rem; }
.ml-3 { margin-left: 1rem; }
.ml-4 { margin-left: 1.5rem; }
.ml-5 { margin-left: 3rem; }

.mr-0 { margin-right: 0; }
.mr-1 { margin-right: 0.25rem; }
.mr-2 { margin-right: 0.5rem; }
.mr-3 { margin-right: 1rem; }
.mr-4 { margin-right: 1.5rem; }
.mr-5 { margin-right: 3rem; }

/* 패딩 */
.pt-0 { padding-top: 0; }
.pt-1 { padding-top: 0.25rem; }
.pt-2 { padding-top: 0.5rem; }
.pt-3 { padding-top: 1rem; }
.pt-4 { padding-top: 1.5rem; }
.pt-5 { padding-top: 3rem; }

.pb-0 { padding-bottom: 0; }
.pb-1 { padding-bottom: 0.25rem; }
.pb-2 { padding-bottom: 0.5rem; }
.pb-3 { padding-bottom: 1rem; }
.pb-4 { padding-bottom: 1.5rem; }
.pb-5 { padding-bottom: 3rem; }

.pl-0 { padding-left: 0; }
.pl-1 { padding-left: 0.25rem; }
.pl-2 { padding-left: 0.5rem; }
.pl-3 { padding-left: 1rem; }
.pl-4 { padding-left: 1.5rem; }
.pl-5 { padding-left: 3rem; }

.pr-0 { padding-right: 0; }
.pr-1 { padding-right: 0.25rem; }
.pr-2 { padding-right: 0.5rem; }
.pr-3 { padding-right: 1rem; }
.pr-4 { padding-right: 1.5rem; }
.pr-5 { padding-right: 3rem; }

/* 디스플레이 */
.d-none { display: none; }
.d-block { display: block; }
.d-inline { display: inline; }
.d-inline-block { display: inline-block; }
.d-flex { display: flex; }
.d-grid { display: grid; }

/* 플렉스 */
.flex-row { flex-direction: row; }
.flex-column { flex-direction: column; }
.flex-wrap { flex-wrap: wrap; }
.flex-nowrap { flex-wrap: nowrap; }
.justify-start { justify-content: flex-start; }
.justify-end { justify-content: flex-end; }
.justify-center { justify-content: center; }
.justify-between { justify-content: space-between; }
.justify-around { justify-content: space-around; }
.align-start { align-items: flex-start; }
.align-end { align-items: flex-end; }
.align-center { align-items: center; }
.align-baseline { align-items: baseline; }
.align-stretch { align-items: stretch; }

/* 위치 */
.position-relative { position: relative; }
.position-absolute { position: absolute; }
.position-fixed { position: fixed; }
.position-sticky { position: sticky; }

/* 너비 */
.w-25 { width: 25%; }
.w-50 { width: 50%; }
.w-75 { width: 75%; }
.w-100 { width: 100%; }
.w-auto { width: auto; }

/* 높이 */
.h-25 { height: 25%; }
.h-50 { height: 50%; }
.h-75 { height: 75%; }
.h-100 { height: 100%; }
.h-auto { height: auto; }

/* 오버플로우 */
.overflow-hidden { overflow: hidden; }
.overflow-auto { overflow: auto; }
.overflow-scroll { overflow: scroll; }
.overflow-visible { overflow: visible; }

/* 테두리 */
.border { border: 1px solid; }
.border-0 { border: 0; }
.border-top { border-top: 1px solid; }
.border-bottom { border-bottom: 1px solid; }
.border-left { border-left: 1px solid; }
.border-right { border-right: 1px solid; }

/* 둥근 모서리 */
.rounded { border-radius: 0.25rem; }
.rounded-0 { border-radius: 0; }
.rounded-1 { border-radius: 0.125rem; }
.rounded-2 { border-radius: 0.25rem; }
.rounded-3 { border-radius: 0.375rem; }
.rounded-circle { border-radius: 50%; }

/* 그림자 */
.shadow { box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); }
.shadow-sm { box-shadow: 0 0.125rem 0.25rem rgba(0, 0, 0, 0.075); }
.shadow-lg { box-shadow: 0 1rem 3rem rgba(0, 0, 0, 0.175); }
.shadow-none { box-shadow: none; }

/* 텍스트 색상 */
.text-primary { color: #6b4a2e; }
.text-secondary { color: #8b6f4e; }
.text-success { color: #28a745; }
.text-danger { color: #dc3545; }
.text-warning { color: #ffc107; }
.text-info { color: #17a2b8; }
.text-light { color: #f8f9fa; }
.text-dark { color: #343a40; }
.text-muted { color: #6c757d; }
.text-white { color: #fff; }

/* 배경 색상 */
.bg-primary { background-color: #6b4a2e; }
.bg-secondary { background-color: #8b6f4e; }
.bg-success { background-color: #28a745; }
.bg-danger { background-color: #dc3545; }
.bg-warning { background-color: #ffc107; }
.bg-info { background-color: #17a2b8; }
.bg-light { background-color: #f8f9fa; }
.bg-dark { background-color: #343a40; }
.bg-white { background-color: #fff; }
.bg-transparent { background-color: transparent; }

/* 폰트 크기 */
.fs-1 { font-size: 2.5rem; }
.fs-2 { font-size: 2rem; }
.fs-3 { font-size: 1.75rem; }
.fs-4 { font-size: 1.5rem; }
.fs-5 { font-size: 1.25rem; }
.fs-6 { font-size: 1rem; }

/* 폰트 굵기 */
.fw-bold { font-weight: bold; }
.fw-bolder { font-weight: bolder; }
.fw-normal { font-weight: normal; }
.fw-light { font-weight: 300; }
.fw-lighter { font-weight: lighter; }

/* PC/모바일 전용 */
.pc-only { display: block; }
.mobile-only { display: none; }

@media (max-width: 768px) {
    .pc-only { display: none !important; }
    .mobile-only { display: block !important; }
}

/* 숨김/보임 */
.visually-hidden {
    position: absolute !important;
    width: 1px !important;
    height: 1px !important;
    padding: 0 !important;
    margin: -1px !important;
    overflow: hidden !important;
    clip: rect(0, 0, 0, 0) !important;
    white-space: nowrap !important;
    border: 0 !important;
}

/* 커서 */
.cursor-pointer { cursor: pointer; }
.cursor-default { cursor: default; }
.cursor-not-allowed { cursor: not-allowed; }

/* 사용자 선택 */
.user-select-none { user-select: none; }
.user-select-auto { user-select: auto; }
.user-select-all { user-select: all; }

/* 포인터 이벤트 */
.pe-none { pointer-events: none; }
.pe-auto { pointer-events: auto; }