@charset "UTF-8";

body {
      margin: 0;
      padding: 0;
      display: flex;
      justify-content: center;
    }
    
table{
	width: 100%;
    border-collapse: separate;
    border-spacing: 0;
    box-shadow: 0 2px 8px rgba(0,0,0,0.1);
    border-radius: 8px;
    overflow: hidden;
    font-family: 'Segoe UI', sans-serif;
}

table tr {
  text-align: center;
  padding: 12px 16px;
}

table td {
  padding: 12px 16px;
  border-top: 1px solid #eee;
  border-left: 1px solid #eee;
  vertical-align: middle;
  width: 25%;
}

   

/* heder - 사이드바 스타일*/
#header-container {
    display: flex;
    flex-direction: column;   
    position: fixed;
    top: 0; left: 0;
    width: 280px;
    height: 100vh;
    align-items: flex-start;
    justify-content: flex-start;
    background: #f5f6fa;
    border-right: 1px solid #ddd;
    z-index: 1000;
    padding: 20px 0;
    box-sizing: border-box;
}

#header-container h4 {
    margin: 0 0 24px 20px;
    padding: 5px;
    font-size: 1.2rem;
}

#header-container h4 a {
    text-decoration: none;
    color: inherit;
}

#navigation {
    display: flex;
    flex-direction: column;  
    list-style: none;
    margin: 0;
    padding: 0;
    width: 100%;
    gap: 2px;
}

#header-container ul li {
    border-left: 4px solid transparent;  
    border-bottom: none;
    text-align: left;
    padding: 10px 16px;
    cursor: pointer;
    width: 100%;
    box-sizing: border-box;
}

#header-container ul li:hover {
	border-left: 4px solid transparent; 
    color: inherit;
    background-color: #e0e0e0;
}

#header-container ul li a {
    text-decoration: none;
    color: inherit;
}

#github {
    display: flex;
    align-items: center;
    gap: 5px;
    margin: auto 0 16px 20px;   
    cursor: pointer;
    padding: 5px;
    border-radius: 5px;
}

#github:hover {
    background-color: #e0e0e0;
}

#github img {
    width: 24px;
    height: 24px;
}

#github a {
    text-decoration: none;
    color: inherit;
}


/* body */
#body-container {
    display: grid;
    grid-template-columns: 1fr;
    row-gap: 20px;
    justify-content: center;
    width: calc(100% - 280px);  
    max-width: 860px;
    margin-top: 20px;
    margin-left: 220px;  
    padding-bottom: 30px;       
    background-color: #fff;
    padding: 20px 40px;
    box-sizing: border-box;
}

hr {
    height: 1px;
    padding: 0;
    margin: 0;
    background-color: #eeebee;
    border: 0;
}

#body-container div { 
	padding: 10px;
	scroll-margin-top: 55px;
}

blockquote {
	border-left: 3px solid lightgray;
	padding-left: 10px;
	margin-left: 0;
}

#project-intro ul{
	list-style: none;
	display: flex;
	padding-left: 0;
	
}

#project-intro ul li{
	margin: 5px;
	padding:8px;
	border-radius:15px;
	background-color: #3D867E;
	color: white;
}


#sys-arch img{
	margin-left: 20%;
}


/* 이용 안내 */
.slider-container *,
.slider-container *::before,
.slider-container *::after {
    box-sizing: border-box;
}

.slider-container {
    position: relative;
    width: 100%;
    max-width: 750px;
    aspect-ratio: 15 / 8;
    margin: 20px auto;
    overflow: hidden;             
    border-radius: 12px;
    box-shadow: 0 4px 15px rgba(0, 0, 0, 0.12);
    background: #f5f5f5;
    user-select: none;
    box-sizing: border-box;
}

.slider-track {
    display: flex;
    height: 100%;
    margin: 0;
    padding: 0;
    transition: transform 0.5s cubic-bezier(0.4, 0, 0.2, 1);
    will-change: transform;
}

.slider-track img {
    height: 100%;
    object-fit: contain;
    display: block;
    margin: 0;
    padding: 0;
    border: 0;
    flex: none;                   
    -webkit-user-drag: none;
}

/* 좌우 버튼 */
.slider-btn {
    position: absolute;
    top: 50%;
    transform: translateY(-50%);
    width: 44px;
    height: 44px;
    border: none;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.35);
    color: #fff;
    font-size: 18px;
    cursor: pointer;
    display: flex;
    align-items: center;
    justify-content: center;
    transition: background 0.2s, transform 0.2s;
    z-index: 10;
}

.slider-btn:hover {
    background: rgba(0, 0, 0, 0.7);
    transform: translateY(-50%) scale(1.08);
}

.slider-btn.prev { left: 12px; }
.slider-btn.next { right: 12px; }


.slider-counter {
    position: absolute;
    top: 12px;
    right: 12px;
    padding: 4px 12px;
    background: rgba(0, 0, 0, 0.5);
    color: #fff;
    font-size: 13px;
    border-radius: 12px;
    z-index: 10;
}

.slider-dots {
    position: absolute;
    bottom: 14px;
    left: 50%;
    transform: translateX(-50%);
    display: flex;
    gap: 6px;
    z-index: 10;
    padding: 6px 10px;
    background: rgba(255, 255, 255, 0.6);
    backdrop-filter: blur(4px);
    border-radius: 12px;
}

.slider-dots .dot {
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: rgba(0, 0, 0, 0.25);
    border: none;
    padding: 0;
    cursor: pointer;
    transition: background 0.2s, width 0.2s;
}

.slider-dots .dot.active {
    background: #2d5f4f;
    width: 20px;
    border-radius: 4px;
}

/* 모바일 */
@media (max-width: 600px) {
    .slider-btn {
        width: 36px;
        height: 36px;
        font-size: 14px;
    }
    .slider-counter { font-size: 11px; }
    .slider-dots .dot { width: 6px; height: 6px; }
    .slider-dots .dot.active { width: 16px; }
}


/* 소개 자료 */
#intro-data {
	margin-bottom: 30px;
}

#intro-data li{
	list-style: none;
	margin: 10px;
}

#intro-data li a {
	text-decoration: none;
	color: #3D867E;
    font-weight: bold;
    font-size: 18px;
}

#intro-data li a:hover {
	text-decoration: underline 1px #3D867E;
}


#blank {
	height: 60px;
	color: grey;
	font-size: 10px;
}