/* 引入 Source Sans 3 字体 - 学术/技术文档设计 */
@import url('https://fonts.googleapis.com/css2?family=Source+Sans+3:wght@300;400;500;600;700&display=swap');

:root {
    --kt-primary: #6366f1;
    --kt-primary-subtle: #818cf8;
    --kt-primary-bg-subtle: #e0e7ff;
    --kt-light: #f8f9fa;
    --kt-light-subtle: #fcfcfd;
    --kt-white: #ffffff;
    --kt-dark: #1e293b;
    --kt-gray: #e2e8f0;
    --kt-border-color: #cbd5e1;
    --kt-margin-1: 0.25rem;
    --kt-margin-2: 0.5rem;
    --kt-margin-3: 1rem;
    --kt-padding-1: 0.25rem;
    --kt-padding-2: 0.5rem;
    --kt-padding-3: 1rem;
    /* 渐变配色变量 */
    --gradient-primary: linear-gradient(135deg, #6366f1 0%, #8b5cf6 50%, #ec4899 100%);
    --gradient-primary-light: linear-gradient(135deg, #818cf8 0%, #a78bfa 100%);
    --gradient-nav: linear-gradient(90deg, #4f46e5 0%, #7c3aed 50%, #db2777 100%);
    --gradient-banner: linear-gradient(135deg, #1e3a8a 0%, #3730a3 50%, #4c1d95 100%);
    --gradient-card: linear-gradient(180deg, rgba(99, 102, 241, 0.1) 0%, transparent 100%);
    --gradient-footer: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

body {
    font-family:
        "Source Sans 3",
        "Source Sans Pro",
        "PingFang SC",
        "Microsoft YaHei",
        "Helvetica Neue",
        "Segoe UI",
        Arial,
        /* 衬线字体备选 */
        Georgia,
        "Times New Roman",
        Palatino,
        "Palatino Linotype",
        serif;
}

img {
    max-width: 100%;
}

.btn-primary {
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--kt-primary);
    --bs-btn-border-color: var(--kt-primary);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: #4f46e5;
    --bs-btn-hover-border-color: var(--kt-primary);
    --bs-btn-focus-shadow-rgb: 49, 132, 253;
    --bs-btn-active-color: #fff;
    --bs-btn-active-bg: var(--kt-primary);
    --bs-btn-active-border-color: var(--kt-primary);
    --bs-btn-active-shadow: inset 0 3px 5px rgba(0, 0, 0, 0.125);
    --bs-btn-disabled-color: #fff;
    --bs-btn-disabled-bg: var(--kt-primary);
    --bs-btn-disabled-border-color: var(--kt-primary);
    background: var(--gradient-primary) !important;
    border: none !important;
}

.kt-banner .text-banner {
    background-image: url("/static/themes/images/bg_banner.jpeg");
    background-size: cover;
    background: var(--gradient-banner), url("/static/themes/images/bg_banner.jpeg");
    background-blend-mode: overlay;
}

.kt-banner .text-banner a {
    color: var(--kt-white);
}

.kt-navbar .navbar-nav .dropdown:hover .dropdown-menu {
}

.kt-navbar .navbar-nav > li.nav-item {
    flex-grow: 1;
    position: relative;
}

.kt-navbar .navbar-nav > li.nav-item:not(:last-child):after {
    position: absolute;
    top: 0;
    right: 0;
    content: " ";
    border-right: 1px solid rgba(255, 255, 255, 0.3);
    height: 100%;
}

.kt-navbar .navbar-nav > li.nav-item:hover {
    background-color: rgba(79, 70, 229, 0.5);
}

.kt-navbar .nav-link {
    font-size: 1.2rem;
    /*padding-top: 0.25rem;*/
    /*padding-bottom: 0.25rem;*/
    text-align: center;
    font-weight: bolder;
    color: var(--kt-white) !important;
}

.kt-navbar .nav-item ul.dropdown-menu {
    min-width: 100% !important;
    border-radius: 0 0 8px 8px;
    background: var(--kt-white);
    transition: all 0.3s ease;
    transform-origin: top center;
}

.kt-navbar .nav-item ul.dropdown-menu.show {
    animation: dropdownFadeIn 0.3s ease forwards;
}

@keyframes dropdownFadeIn {
    0% {
        opacity: 0;
        transform: translateY(-10px) scaleY(0.95);
    }
    100% {
        opacity: 1;
        transform: translateY(0) scaleY(1);
    }
}

.kt-navbar .nav-item ul.dropdown-menu .dropdown-item {
    font-size: 1.1em;
}

.kt-navbar .nav-item ul.dropdown-menu .dropdown-item:hover,
.kt-plugin.menu-t .nav-item ul.dropdown-menu .dropdown-item:hover {
    background: var(--gradient-primary);
    color: var(--kt-white);
}

.kt-navbar .dropdown .dropdown-toggle:after {
    color: var(--bs-gray-500);
    content: "\f282";
    font-family: "bootstrap-icons" !important;
    /*line-height: 1.5rem;*/
    margin-left: 0.625rem;
    /*vertical-align: -.125em;*/
    vertical-align: middle;
    border: none;
}

.kt-navbar .dropdown .show.dropdown-toggle:after {
    /*transform: rotate(180deg);*/
}

.kt-menu-h {
    /* custom */
    /*background: linear-gradient(90deg, rgba(42,110,170,1) 0%, rgba(90,160,144,1) 100%);*/
    /*background: linear-gradient(90deg, rgba(0,102,153,1) 0%, rgba(90,160,144,1) 100%);*/
    background: var(--gradient-nav);
}

.kt-menu-h .navbar-nav > li:not(:last-child) {
    /*border-right: 1px solid var(--primary-subtle);*/
}

.kt-main > .kt-app {
    padding-top: var(--kt-padding-2);
    padding-bottom: var(--kt-padding-2);
}

.kt-main .kt-myspace-app .evt-dashboard .card {
    background-image: var(--gradient-card);
}

.kt-plugin {
    /*margin-bottom: .75rem !important;*/
}

@media (min-width: 1000px) {
    .kt-menu-t {
        position: fixed;
        top: 0;
        right: 0;
        left: 0;
        z-index: 1030;
    }

    .kt-plugin.menu-t {
        background: linear-gradient(90deg, #4f46e5 0%, #7c3aed 100%);
        /*background-color: #17445abf;*/
        margin-bottom: 0.75rem !important;
    }

    .kt-plugin.menu-t > a,
    .kt-plugin.menu-t ul.navbar-nav > li > a {
        color: var(--kt-white) !important;
        font-size: 0.8rem;
        padding: 0 0.675rem;
    }

    .kt-plugin.menu-t ul.ieee-links > li.nav-item:not(:last-child) > a {
        border-right: 1px solid rgba(255, 255, 255, 0.6) !important;
    }

    .kt-content {
        border-radius: 0 0 12px 12px;
    }
}

.kt-plugin .plugin-title,
.kt-app .app-title {
    font-weight: bolder;
    font-size: 1.1rem;
    color: #ffffff;
    background: var(--gradient-primary);
    padding: 0.5rem 1rem !important;
}

.kt-app.evt-account .app-title {
    font-size: 1.75rem !important;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    border-bottom: 3px solid;
    border-image: var(--gradient-primary) 1;
}

.kt-event-sidebar .kt-plugin {
    background-color: var(--kt-light);
    margin-bottom: 0.75rem !important;
}

.kt-event-sidebar .kt-plugin > .plugin-title {
    /*color: rgba(244,123,30,1);*/
}

.kt-event-sidebar .kt-plugin > .plugin-body {
    padding: 1rem;
    background: linear-gradient(135deg, rgba(255, 255, 255, 0.95) 0%, rgba(224, 231, 255, 0.7) 30%, rgba(249, 233, 253, 0.6) 70%, rgba(255, 240, 245, 0.8) 100%);
    border-left: 3px solid;
    border-image: linear-gradient(180deg, #6366f1, #8b5cf6, #ec4899) 1;
}

.kt-event-app .kt-plugin {
    margin-bottom: 0.75rem !important;
}

.kt-event-app .kt-plugin > .plugin-body,
.kt-event-app .combined-page .app-body,
.kt-event-app .single-page .app-body {
    padding: 1rem 0.5rem 0 0.5rem;
    text-align: justify;
}

/* ==================== 倒计时插件样式 ==================== */
.kt-plugin.countdown {
    padding: 0;
}

.kt-plugin.countdown .plugin-title {
    background: var(--gradient-primary);
    font-weight: bolder;
    font-size: 1.1rem;
    color: #fff;
    padding: 0.75rem 1rem;
}

.kt-plugin.countdown .plugin-body {
    padding: 1.5rem 1rem;
    background: linear-gradient(180deg, rgba(99, 102, 241, 0.05) 0%, rgba(249, 250, 252, 1) 100%);
    border-radius: 0 0 12px 12px;
}

/* 倒计时容器 - 水平排列 */
.kt-plugin.countdown .countdown-wrapper {
    display: flex;
    justify-content: center;
    align-items: center;
    gap: 0.5rem;
    flex-wrap: wrap;
}

/* 每个时间单位 */
.kt-plugin.countdown .countdown-item {
    display: flex;
    flex-direction: column;
    align-items: center;
    min-width: 70px;
    padding: 0.75rem;
    background: var(--kt-white);
    border-radius: 12px;
    box-shadow: 0 2px 8px rgba(99, 102, 241, 0.15);
    transition: transform 0.3s ease, box-shadow 0.3s ease;
}

.kt-plugin.countdown .countdown-item:hover {
    transform: translateY(-3px);
    box-shadow: 0 4px 16px rgba(99, 102, 241, 0.25);
}

/* 数字样式 - 渐变文字 */
.kt-plugin.countdown .time {
    font-size: 2rem;
    font-weight: 700;
    letter-spacing: 0.05rem;
    background: var(--gradient-primary);
    -webkit-background-clip: text;
    -webkit-text-fill-color: transparent;
    background-clip: text;
    line-height: 1.2;
}

/* 时间单位标签 */
.kt-plugin.countdown .time-label {
    font-size: 0.7rem;
    font-weight: 600;
    text-transform: uppercase;
    color: var(--kt-dark);
    opacity: 0.7;
    margin-top: 0.25rem;
    letter-spacing: 0.1rem;
}

/* 分隔符 */
.kt-plugin.countdown .countdown-separator {
    font-size: 1.5rem;
    font-weight: 700;
    color: var(--kt-primary);
    padding: 0 0.25rem;
}

/* 响应式 - 小屏幕上垂直排列或缩小 */
@media (max-width: 576px) {
    .kt-plugin.countdown .countdown-wrapper {
        gap: 0.25rem;
    }

    .kt-plugin.countdown .countdown-item {
        min-width: 50px;
        padding: 0.5rem;
    }

    .kt-plugin.countdown .time {
        font-size: 1.5rem;
    }

    .kt-plugin.countdown .time-label {
        font-size: 0.6rem;
    }

    .kt-plugin.countdown .countdown-separator {
        font-size: 1rem;
    }
}

/* 紧凑模式 - 用于侧边栏等小区域 */
.kt-plugin.countdown.compact .countdown-item {
    min-width: 50px;
    padding: 0.5rem;
}

.kt-plugin.countdown.compact .time {
    font-size: 1.25rem;
}

.kt-plugin.countdown.compact .time-label {
    font-size: 0.6rem;
}

/* 简约暗色模式 - 用于深色背景 */
.kt-plugin.countdown.inverse .plugin-title {
    background: var(--gradient-footer);
}

.kt-plugin.countdown.inverse .plugin-body {
    background: linear-gradient(180deg, #1e293b 0%, #0f172a 100%);
}

.kt-plugin.countdown.inverse .countdown-item {
    background: rgba(255, 255, 255, 0.1);
    box-shadow: none;
}

.kt-plugin.countdown.inverse .time {
    color: #fff;
}

.kt-plugin.countdown.inverse .time-label {
    color: rgba(255, 255, 255, 0.8);
}

.kt-plugin.countdown.inverse .countdown-separator {
    color: #8b5cf6;
}

.kt-plugin .plugin-title,
.kt-app .app-title {
    padding: 0.25rem 1rem;
}

.kt-plugin.recent-news .more-link {
    font-size: 0.8rem;
    margin-top: 0.3rem;
}

.kt-plugin.organisers .org {
    padding: 0.5rem;
    background: linear-gradient(135deg, var(--kt-white) 0%, #f1f5f9 100%);
}

.kt-plugin.organisers .org > a {
    text-decoration: none;
    color: var(--dark);
}

.kt-plugin.quick-links .quick-link img {
    max-width: 36px;
}

.kt-plugin.quick-links .quick-link {
    background: linear-gradient(135deg, var(--kt-white) 0%, #f1f5f9 100%);
}

.kt-plugin.quick-links .quick-link a {
    color: var(--kt-dark);
}

.kt-plugin.menu-t .dropdown .language::before {
    display: inline-block;
    content: " ";
    background: 0 0 no-repeat;
    background-size: 100% 100%;
    width: 23px;
    height: 15px;
    position: relative;
    top: 2px;
    left: -2px;
}

.kt-plugin.menu-t .dropdown .language.language-en::before {
    background-image: url(/static/themes/images/lang_en.png) !important;
}

.kt-plugin.menu-t .dropdown .language.language-zh-hans::before {
    background-image: url(/static/themes/images/lang_zh_hans.png) !important;
}

.kt-plugin.speakers-list .plugin-body {
    padding-left: 0;
}

.kt-plugin.speakers-list .plugin-body li:not(:last-child) {
    border-bottom: 1px solid var(--kt-border-color);
}

.kt-plugin.speakers-list .speaker-avatar img,
.kt-plugin.speakers-list .speaker-avatar .text-avatar {
    width: 100px;
    height: 100px;
}

.kt-plugin.speakers-list .speaker-avatar .text-avatar {
    text-align: center;
    align-content: center;
    background: var(--gradient-primary-light);
    color: #fff;
    font-size: 48px;
}

.kt-plugin.contact-us .contact-info {
    background: linear-gradient(135deg, var(--kt-white) 0%, #f1f5f9 100%);
}

.kt-plugin.contact-us .contact-info:not(:last-child) {
    margin-bottom: var(--kt-margin-2);
}

.kt-plugin.contact-us .contact-info div {
    padding: var(--kt-padding-2) 0;
}

.kt-plugin.contact-us .contact-info div:not(:last-child) {
    border-bottom: 1px solid var(--kt-border-color);
    padding: var(--kt-padding-2) 0;
}

.kt-plugin.important-dates .important-date {
    background: linear-gradient(135deg, var(--kt-white) 0%, #f1f5f9 100%);
    text-align: center;
}

.kt-plugin.important-dates .important-date:not(:last-child) {
    margin-bottom: var(--kt-margin-2);
}

.kt-app {
    /*padding-top: 1rem;*/
}

.kt-footer {
    font-size: 0.8rem;
}

.swiper-button-next,
.swiper-button-prev {
    color: var(--kt-light) !important;
}

/** LAST STYLE / NOT KT2024 **/
.registration-fees ul li {
    margin-bottom: 0.5rem;
    padding: 0.5rem 1rem;
    background: linear-gradient(135deg, #f8f9fa 0%, #f1f5f9 100%);
}

.registration-fees input[type="radio"].form-check-input {
    width: 1.3rem !important;
    height: 1.3rem !important;
}
.registration-fees .form-check label.form-check-label {
    margin-left: 0.5rem;
    width: 100% !important;
}

.registration-fees .form-check label.form-check-label .ticket-title {
    font-size: 1.2rem;
    font-weight: bolder;
}

/* bank select */
.payments-for-select > ul > li {
    background: linear-gradient(135deg, #fff 0%, #f8fafc 100%);
    padding: 1rem;
}

.payments-for-select > ul > li:not(:last-child) {
    margin-bottom: 0.75rem !important;
}

.payments-for-select label {
    width: 100% !important;
}

.payments-for-select label p {
    margin-bottom: 0.25rem;
}

.payments-for-select label hr {
    margin-bottom: 0.25rem;
    margin-top: 0.25rem;
    opacity: 0.1;
}

ul.banks > li {
    width: 140px !important;
}

ul.banks > li > span {
    padding: 10px 4px;
    cursor: pointer;
    border: 1px solid #eee;
    border-radius: 5px;
}

ul.banks > li > span > img {
    max-width: 120px;
}

ul.banks > li > span.active {
    border: 2px solid #8b5cf6;
    position: relative;
}

ul.banks > li > span.active:after {
    content: "已选中";
    position: absolute;
    top: 0;
    right: 0;
    background: var(--gradient-primary);
    padding: 0 5px;
    color: #ffffff;
    font-size: 0.6em;
}

@media (max-width: 1000px) {
    .kt-content {
        background: linear-gradient(180deg, var(--kt-primary) 0%, #c4b5fd 50%, transparent 100%)
            no-repeat !important;
        box-shadow: none !important;
        border-block: 1px solid var(--kt-border-color);
    }

    .kt-main {
        background: var(--kt-white);
    }

    .kt-main > .kt-app,
    .kt-main .kt-myspace-app {
        padding-right: 0.5rem;
        padding-left: 0.5rem;
    }

    .kt-plugin.menu-grid .menu-link {
        background: linear-gradient(135deg, rgba(79, 70, 229, 0.6) 0%, rgba(139, 92, 246, 0.6) 100%);
        color: var(--kt-white);
    }

    .kt-plugin.menu-grid .menu-link .menu-title {
        font-size: 1rem;
    }

    .kt-plugin.menu-grid .menu-link .menu-icon {
        line-height: 1.2em;
    }

    .kt-plugin.menu-grid .menu-link .menu-icon img {
        max-height: 32px;
    }
    .row-cols-3 > * {
        flex: 1 0 auto !important;
    }
}

.nav-link.dropdown-toggle {
    white-space: nowrap !important;
}


/* 主菜单允许换成多行，但菜单项文字不换行 */
  .kt-menu-h .kt-navbar .navbar-nav {
      flex-wrap: wrap;
      justify-content: center !important;
      align-items: stretch;
  }

  .kt-menu-h .kt-navbar .navbar-nav > li.nav-item {
      flex: 0 0 auto;
  }

  .kt-menu-h .kt-navbar .nav-link {
      white-space: nowrap !important;
      display: flex;
      align-items: center;
      justify-content: center;
  }

  .kt-menu-h .kt-navbar .nav-item ul.dropdown-menu {
      min-width: max-content !important;
  }
  
  @media (max-width: 1200px) {
      .kt-menu-h .kt-navbar .nav-link {
          box-shadow: inset 0 -1px 0 rgba(255, 255, 255, 0.45);
      }
  }
  
/* Force desktop layout on small devices */
  html,
  body {
      min-width: 1200px;
  }

  .kt-content.container,
  .kt-menu-t.container,
  .kt-menu-h > .container,
  .kt-footer.container {
      min-width: 1140px;
  }
  
    /* Mobile touch devices: keep desktop-scale layout, but make wrapped menu rows fill full width */
  @media (hover: none) and (pointer: coarse) {
      .kt-menu-h > .container {
          width: 100% !important;
          max-width: none !important;
          min-width: 1200px !important;
      }

      .kt-menu-h .kt-navbar .navbar-nav {
          justify-content: stretch !important;
          width: 100%;
      }

      .kt-menu-h .kt-navbar .navbar-nav > li.nav-item {
          flex: 1 1 auto;
      }

      .kt-menu-h .kt-navbar .nav-link {
          width: 100%;
      }
  }
  
    /* Dropdown width should be at least the same as its parent menu item */
  .kt-menu-h .kt-navbar .nav-item.dropdown {
      position: relative;
  }

  .kt-menu-h .kt-navbar .nav-item.dropdown > .dropdown-menu {
      min-width: 100% !important;
      width: max-content;
  }

  .kt-menu-h .kt-navbar .nav-item.dropdown > .dropdown-menu .dropdown-item {
      white-space: nowrap;
  }