/* main font for menu. */

/* font for headings, text, tags */
/*{*/
@import url('https://fonts.googleapis.com/css?family=Open+Sans:300,400,500,600,700,800');
@import url('https://fonts.googleapis.com/css?family=Playfair+Display:400italic&subset=latin,latin-ext');

@media (max-width: 1199px){
    .container {
        width: 90%;
    }
}
@media (max-width: 767px){
    #Program .container {
        width: 95%;
    }
}
@media (min-width: 1200px){
    .container {
        width: 1080px;
    }
}
/*}*/

/* ===== Text setting ===== */
/*{*/
.h1_font {
    font-weight: bolder;
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.6rem, 2.8vw, 2.8rem);
}
.h2_font {
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.5rem, 2.6vw, 2.6rem);
}
.h3_font {
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.4rem, 2.4vw, 2.4rem);
}

.under_poster {
    background: linear-gradient(transparent 85%,  #4f4f70 10%);
}
.under_place {
    background: linear-gradient(transparent 70%,  #fed136 70%);
}

/*}*/

/* ===== navbar setting ===== */
/*{*/
/* configuration */
@media (max-width: 767px){
    .navbar .container {
        margin:  0px 25px  0px 25px;
        padding: 7px  0px  7px  0px;
        width: auto;
        min-height: 49px;
    }
    .navbar-inverse li a {
        line-height: 1.2;
        font-size: clamp(1.3rem, 2.3vw, 3.0rem);
    }
    .logo {
        width:  auto;
        height: 35px;
    }
}

@media (min-width: 768px){
    .navbar .container {
        margin:  0px  50px  0px 50px;
        padding: 10px  0px  10px  0px;
        width: auto;
        min-height: 70px;
    }
    .navbar-inverse li a {
        font-size: 140%;
    }
    .logo {
        width:  auto;
        height: 50px;
    }
}

@media (min-width: 1240px){
    .navbar .container {
        margin-right: auto;
        margin-left: auto;
        width: 1140px !important;
    }
}

.navbar-inverse li a {
    font-family: 'Open Sans', sans-serif;
    text-transform: uppercase;
    font-weight: 400;
    letter-spacing: 1px;
    color:#fff
}

/* logo */
.navbar-brand {
    display: flex;
    align-items: center;
    padding-top: 0px;
    padding-bottom: 0px;
}

/* nav-item */
.navbar-inverse .dropdown-menu {
    background-color: #333;
    border-radius: 4px;
}

.navbar-inverse .dropdown-item + .dropdown-item {
    margin-top: 7px
}

@media (max-width: 767px){
    .nav-item.large-only1 { display: block !important; }
    .nav-item.large-only2 { display: block !important; }
    .nav-item.large-only3 { display: block !important; }
    .nav-item.small-only1 { display: none !important ; }
    .nav-item.small-only2 { display: none !important ; }
    .nav-item.small-only3 { display: none !important ; }
}

@media (max-width: 1100px){ .large-only1 { display: none !important; } }
@media (min-width: 1100px){ .small-only1 { display: none !important; } }
@media (max-width:  950px){ .large-only2 { display: none !important; } }
@media (min-width:  950px){ .small-only2 { display: none !important; } }
@media (max-width:  865px){ .large-only3 { display: none !important; } }
@media (min-width:  865px){ .small-only3 { display: none !important; } }


/* botton for mobile */
.navbar-toggle {
    border: none;
    background: transparent;
    box-shadow: none;
    margin-top: 7.5px !important;
    margin-bottom: 7.5px !important;
}

.navbar-toggle:hover,
.navbar-toggle:focus {
  border: none;
  background: transparent !important;
  outline: none;
  box-shadow: none;
}

.navbar .navbar-toggle {
    margin-top: 0;
    margin-bottom: 0;
    margin-right: 0;
}

.navbar-toggle .icon-bar {
    background-color: #DDD !important;
}

.navbar-toggle .icon-bar + .icon-bar {
  margin-top: 5.5px;
}

/*}*/

/* ===== header, footer, title ===== */
/*{*/
header {
    /*background-image: url(../pictures/bg-main.jpg);*/
    background-color: #222222;
    background-repeat: none;
    background-attachment: scroll;
    background-position: center center;
    -webkit-background-size: cover;
    -moz-background-size: cover;
    background-size: cover;
    -o-background-size: cover;
    text-align: center;
    color: #EEE;
}

footer {
    background-color: #222222;
    color: #ccc;
    padding: 3em 3em 4em 3em;
}

@media (max-width: 767px){
    .footer_area { text-align: center; }
}

@media (min-width: 768px){
    .footer_area {
        display: flex;
        justify-content: space-evenly;
    }
}

.title{
    font-family: 'Times New Roman','Helvetica', serif;
    font-weight: bolder;
    font-size: clamp(2.1rem, 4.9vw, 4.2rem);
}

.subtitle{
    font-family: 'Times New Roman','Helvetica', serif;
    font-weight: bolder;
    font-size: clamp(2.66rem, 6.0vw, 5.5rem);
}

.date {
    font-family: 'Open Sans', sans-serif;
}

.place {
    font-family: 'Open Sans', sans-serif;
    font-weight: bolder;
    margin-top: 1.1em;
    margin-bottom: 0.8em;
}

@media (max-width: 350px){
    .title     { padding-top: 100px; }
    .subtitle  { padding-top: 115px; padding-bottom: 40px;}
    .date      { padding-top:  10px; padding-bottom: 15px;}
}
@media (min-width: 350px){
    .title     { padding-top: 100px; }
    .subtitle  { padding-top: 115px; padding-bottom: 40px;}
    .date      { padding-top:  12px; padding-bottom: 20px;}
}
@media (min-width: 540px){
    .title     { padding-top: 110px; }
    .subtitle  { padding-top: 135px; padding-bottom: 65px;}
    .date      { padding-top:  15px; padding-bottom: 38px;}
}
@media (min-width: 768px){
    .title     { padding-top: 130px; }
    .subtitle  { padding-top: 150px; padding-bottom: 85px;}
    .date      { padding-top:  20px; padding-bottom: 55px;}
}
/*}*/

/* ===== introduction ===== */
/*{*/
.intro-text-box {
    display: flex;
    justify-content: center;
    align-items: center;
    background-color: #EEEAEA;
}
.intro-text{ margin: 0.6em 0.9em 0.6em 0.9em}
/*}*/

/* ===== symp link ===== */
/*{*/
@media (max-width: 767px){
    .symp_link_container {
        display:flex;
        flex-direction: column;
        align-items: center;
        width: 96%;
        margin: 2em 2% 0em 2%;
        gap: 0.4em;
    }
    .symp_link { width: 100% !important; }
}
@media (min-width: 768px){
    .symp_link_container {
        display:flex;
        justify-content: space-between;
        width: 96%;
        margin: 2em 2% 0em 2%;
    }
    .symp_link { width: 49.5% !important; }
}
@media (min-width: 992px){
    .symp_link_br1 { display: none }
}

.symp_link_text {
    display: inline-block;
    background-color: #548ea6;
    color: white;
    text-decoration: none;   /* 下線を消す */
    border-radius: 3px;      /* 角を丸く */
    transition: 0.2s;        /* ホバー時のアニメーション*/
    width: 100%;
    padding: 0.2em 0.5em 0.2em 0.5em;
    text-align: center;
    font-family: 'Open Sans', sans-serif;
    font-weight: bolder;
    font-size: clamp(1.4rem, 2.05vw, 2.4rem);
}
.symp_link_text:hover {
    background-color: #599eae;
    color: white;
    text-decoration: none;   /* 下線を消す */
}
/*}*/

/* ===== poster ===== */
/*{*/
.poster_container {
    margin: 3em 1% 4.5em 1%;
    width: 98%;
    padding: 0em;
}
.poster_area {
    margin-top: 1em;
}
@media (max-width: 767px){
    .poster_area {
        display:flex;
        flex-direction: column;
        align-items: center;
        gap: 2em;
    }
    .poster_container {
        text-align: center;
    }
    .poster_title { font-weight: bolder;}
    .poster_subtitle { font-weight: bolder;}
}
@media (min-width: 768px){
    .poster_area {
        display: flex;
        justify-content: space-around;
        align-items: center;
    }
    .poster_title{ text-indent: 2em;}
}
/*}*/

/* ===== sponser ===== */
/*{*/
.sponser_container {
    margin-top: 2.5em;
    margin-bottom: 4em;
}
.link_area { margin-top: 1em; }
.link_row {
    display: flex;
    justify-content: space-evenly;
    align-items: center;
    margin-top: 1.6em;
    margin-bottom: 1.3em;
}
/*}*/

/* ===== program.html ===== */
/*{*/
.acdn dt {
  position: relative;
/* 「／」と「＼」で作る方法*/
}

.acdn dt::before,
.acdn dt::after {
  position: absolute; /* 相対位置とする */
  font-size: 15px;    /* 適度な大きさにする */
  top: 5%;           /* 上から50%の位置に指定 */
  /*transform: translateY(-50%);  要素の半分だけ高さを上にずらす */
  transition: .5s;    /* アニメーション時間を0.3秒に指定 */
}

.acdn dt::before {
  content: '＼';      /* 全角の逆スラッシュ */
  right: 12.4px;        /* 右から18pxの位置に指定*/
}

.acdn dt::after {
  content: '／';      /* 全角のスラッシュ */
  right: 0px;        /* 右から10pxの位置に指定*/
}

.acdn dt.open::before {
  right: 0px;        /* 右からの位置をafterと入れ替える */
}

.acdn dt.open::after {
  right: 12.4px;       /* 右からの位置をbeforeと入れ替える */
}

.haihun {
  font-size: 130%;
}

.session_title {
    position: relative;
    padding: 1em 0em 0.2em 0em;
}

.session_title:after {
    content: "";
    display: block;
    height: 0.3em;
    background: -webkit-linear-gradient(to right, #207d93, transparent);
    background: linear-gradient(to right, #207d93, transparent);
}

.acdn {
  margin: 0.5em 0em 1.6em 0em;
}


@media (max-width: 480px){
    .acdn .speaker { line-height: 1.9;}
    .program_time {
      font-weight: bolder;
      padding: 0em 0em 0.3em 0.2em;
      margin: 0em 0em 0em 0em;
    }

    .program_title {
      padding: 0em 2em 0em 0.8em;
    }

    .abstract {
      padding: 1.3em 0.2em 1em 0.4em;
      display: none;
    }
}

@media (min-width: 481px){
    .program_for_mobile { display: none !important;}
    .program_time {
      font-weight: bolder;
      padding: 0em 0em 0.3em 1em;
      margin: 0em 0em 0em 0em;
    }

    .program_title {
      padding: 0em 2em 0em 2em;
    }

    .abstract {
      padding: 1.3em 1em 1em 1em;
      display: none;
    }
}
/*}*/

/* ===== speaker.html ===== */
/*{*/
.spk_box {
    background:#e6e6fa;
    margin: 0em 1em 1em 1em;
}
.lec_and_inv-spk {
    margin: 0.2em 0.8em 1em 0.8em;
    text-indent: 0.6em
}
.under_spk {
    position: relative;
}

.under_spk:after {
    content: "";
    display: block;
    height: 0.2em;
    background: -webkit-linear-gradient(to right, #207d93, transparent);
    background: linear-gradient(to right, #207d93, transparent);
}
.spk_img {
    aspect-ratio: 1;
    overflow: hidden;
    display: flex;
    justify-content: center;
}
.spk_img img{
    height: 100%;
    object-fit: cover;
    object-position: center center;
}

@media (max-width: 767px){
    .spk_box {
        display:flex;
        flex-direction: column;
        align-items: center;
        padding: 0.5em;
        padding-top: 1em;
    }
    .spk_img { width: 65% }
    .spk_text { 
        width: 80%;
        text-align: center;
        margin-top: 0.5em; 
    }
    .spk_title {
        margin-top: 0.5em;
    }
}
@media (min-width: 768px){
    .spk_box {
        display:flex;
        justify-content: space-evenly;
        padding: 1em;
    }
    .spk_img { width: 35% }
    .spk_text { 
        width: 65%;
        text-align: left;
        margin: 2% 2em 1em 7%;
    }
    .spk_title {
        margin-top: 3%;
        border-left: 0.2em solid #bbb;
        padding-left: 1em;
    }
    .spk_box:nth-child(odd) {
        flex-direction: row-reverse;
    }
}

.spk0_font{ 
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.7rem, 3.5vw, 3.5rem);
    font-weight: bolder;
}
.spk1_font{ 
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.5rem, 3.2vw, 3rem);
    font-weight: bolder;
}
.spk2_font{ 
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.3rem, 2.5vw, 2.5rem);
}
.spk3_font{ 
    font-family: 'Open Sans', sans-serif;
    font-size: clamp(1.1rem, 2.4vw, 2.4rem);
}
/*}*/

@media (max-width: 767px){
    .map {
        border: 0;
        width: 80%;
        aspect-ratio: 1;
    }
}
@media (min-width: 768px){
    .map {
        border: 0;
        width: 50%;
        aspect-ratio: 1;
    }
}