/* Mobile bottom navigation: native-like tabs */
:root {
  --brand: #36B5FF;
  --brand-strong: #0b5fff;
  --brand-contrast: #ffffff;
  --tab-hover: rgba(255,255,255,0.12);
  --tab-active-bg: rgba(255,255,255,0.16);
  --tab-radius: 12px;
  --border-top-width: 1px;
  --border-top-color: rgba(0,0,0,.06);
  --hover-alpha: 0.12;
  --active-alpha: 0.16;
  --active-indicator: 1; /* 1 = show underline indicator, 0 = hide */
  --active-indicator-color: #ffffff;
}
.bottom-nav { display: none; }
.bottom-nav {
  position: fixed;
  left: 0; right: 0; bottom: 0;
  z-index: 10000;
  width: 100%;
  background: linear-gradient(180deg, var(--brand) 0%, var(--brand-strong) 100%);
  border-top: var(--border-top-width) solid var(--border-top-color);
  box-shadow: 0 -6px 16px rgba(0, 0, 0, 0.10);
  /* display is controlled via media query to hide on desktop */
  align-items: flex-end;
  justify-content: space-around;
  padding: 6px max(env(safe-area-inset-right), 8px) calc(8px + env(safe-area-inset-bottom)) max(env(safe-area-inset-left), 8px);
  transform: translateY(0);
  transition: transform 180ms ease, background-color 180ms ease, backdrop-filter 180ms ease;
  -webkit-tap-highlight-color: transparent;
  user-select: none;
}
.bottom-nav.is-hidden { transform: translateY(100%); }

@supports ((-webkit-backdrop-filter: blur(12px)) or (backdrop-filter: blur(12px))) {
  .bottom-nav {
    background: rgba(11, 95, 255, 0.86);
    -webkit-backdrop-filter: saturate(180%) blur(12px);
    backdrop-filter: saturate(180%) blur(12px);
  }
}

.bottom-nav .tab-item {
  flex: 1 1 0;
  text-decoration: none;
  color: var(--brand-contrast);
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  padding: 8px 6px;
  border-radius: var(--tab-radius);
  position: relative;
  transition: background-color 160ms ease, color 160ms ease, transform 120ms ease;
.bottom-nav .tab-item:hover { background: rgba(255,255,255,var(--hover-alpha)); }
.bottom-nav .tab-item:active { transform: translateY(1px) scale(0.98); }
.bottom-nav .tab-item.is-active { background: rgba(255,255,255,var(--active-alpha)); color: var(--brand-contrast); }
.bottom-nav .tab-item.is-active::after {
  content: '';
  position: absolute;
  bottom: 4px;
  width: 22px;
  height: 3px;
  border-radius: 3px;
  background: var(--active-indicator-color);
  opacity: calc(var(--active-indicator) * 0.85);
}

.bottom-nav .tab-icon {
  font-size: 20px;
  line-height: 1;
  transition: transform 120ms ease, opacity 120ms ease;
}
.bottom-nav .tab-item.is-active .tab-icon { transform: scale(1.05); }
.bottom-nav .tab-text {
  font-size: 11.5px;
  font-weight: 700;
  letter-spacing: 0.2px;
}

/* Respect reduced-motion */
@media (prefers-reduced-motion: reduce) {
  .bottom-nav { transition: none; }
  .bottom-nav .tab-item { transition: none; }
  .bottom-nav .tab-icon { transition: none; }
}

/* Mobile-only styling */
@media (max-width: 768px) {
    .bottom-nav{ display: flex; }
    .bottom-nav .tab-icon { font-size: 21px; }

    .m-flex-dir-col{
        flex-direction: column;
    }

    .gap-8-px{
        gap: 8px;
    }

    .m-align-items-start{
        align-items: start !important;
    }

    .start_all_section{
        margin: 0 !important;
    }

    .reset_test{
        margin: 0 !important;
    }

    .m-p-0{
        padding: 0 !important;
    }

    .test_history_div .block-header.block-header-default, .timeline .block-header.block-header-default{
        flex-direction: column;
        gap: 8px;
        align-items: flex-start;
    }

    .timeline .block-header.block-header-default div{
        display: flex;
        flex-wrap: wrap;
        gap: 8;
    }

    .timeline .block-header.block-header-default .block-options{
        padding: 0;
    }

    .timeline .timeline-event-block .block-content div{
        display: flex;
        flex-wrap: wrap;
        gap: 8px;
    }

    .test_history_div table button, .test_history_div table th, .test_history_div table td, .test_history_div .block-header.block-header-default h3, .test_history_div .block-header.block-header-default button{
        font-size: 12px;
    }

    .test_history_div .block-content{
        padding: 5px 5px 0 20px;
    }

    /* Review page */

    .review-page ul.nav.nav-tabs{
        display: flex;
        flex-direction: column;
        gap: 8px;
    }

    .review-page .m-px-2{
        padding-right: .5rem !important;
        padding-left: .5rem !important;
    }

    .review-page .content .position-fixed{
        top: 5rem !important;
    }

    .self_made_test_tab_content .accordion-button, .self_made_test_tab_content .accordion-body, .self_made_test_tab_content .accordion-body h6 , .generate_quiz_btn{
        font-size: 14px;
    }

    .mobile-p-0{
        padding: 0 !important;
    }

    button.test_type{
        margin: 0 !important;
    }

    .table-container{
        width: 100%;
        overflow-x: scroll;
    }

    #reminderTable{
        position: relative !important;
    }

    .m-w-100{
        width: 100% !important;
    }

    .m-fs-14px{
        font-size: 14px !important;
    }

    .m-fs-16px{
        font-size: 16px !important;
    }

    .m-content-boxed{
        padding: 4px 0 !important;
    }

    .test_action_div{
        display: flex;
        gap: 4px;
    }

    .test_action_div #timingOption{
        width: 100%;
        min-width: fit-content;
        padding: 4px;
    }

    .test_action_div a{
        white-space: nowrap;
        font-size: 11px;
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .pratcice_test_breadcrumb{
        flex-wrap: nowrap !important;
        justify-content: flex-start;
        align-items: center;
    }
    .pratcice_test_breadcrumb a{
        font-size: 11px;
        white-space: nowrap;
    }

    .pratcice_test_breadcrumb .breadcrumb-item{
        display: flex;
        justify-content: center;
        align-items: center;
    }

    .pratcice_test_breadcrumb .breadcrumb-item+.breadcrumb-item::before{
        font-size: 11px !important;
    }

    .practice_test_section_buttons button{
        font-size: 10px !important;
    }

    .m-practice_test_section_content_box{
        width: 100% !important;
    }

    .m-practice_test_section_content_box .practice_test_section_row{
        padding: 0 5px !important;
    }

    .m-practice_test_section_content_box .practice_test_section_row .practice_test_section_buttons{
        order: 1;
        padding: 0 8px 8px 0;
        margin: 0;
        display: grid;
        justify-content: center;
        align-items: center;
        grid-template-columns: 1fr 1fr 1fr;
        gap: 8px;
    }

    .m-practice_test_section_content_box .practice_test_section_row .practice_test_section_buttons button{
        padding: 4px;
        width: 100%;
        max-width: 80px;
        margin: 0 !important;
    }

    .m-practice_test_section_content_box .practice_test_section_row .practice_test_section_buttons button.clock-button{
        padding: 4px;
        width: 100%;
        max-width: 80px !important;
        display: flex;
        justify-content: center;
        align-items: center;
        min-width: 75px !important;
        margin: 0 !important;
    }


    .m-practice_test_section_content_box .practice_test_section_submit_button{
        order: 2;
        padding: 0 !important;
    }

    .m-practice_test_section_content_box .practice_test_section_submit_button .submit_section_btn{
        font-size: 10px !important;
        display: flex;
        justify-content: center;
        align-items: center;
        white-space: nowrap;
    }


    .m-practice_test_section_content_box .flag_skip_div{
        order: 3;
    }
}

/* Style variants */
.bottom-nav.style-underline .tab-item.is-active {
  background: transparent;
}
.bottom-nav.style-underline .tab-item.is-active::after {
  height: 2px;
}

.bottom-nav.style-classic {
  box-shadow: 0 -2px 6px rgba(0,0,0,.08);
}
.bottom-nav.style-elevated {
  box-shadow: 0 -10px 24px rgba(0,0,0,.18);
  border-top-left-radius: 12px;
  border-top-right-radius: 12px;
}

.bottom-nav.style-solid {
  background: var(--brand-strong) !important;
}

/* Optional blur toggle */
.bottom-nav.no-blur {
  -webkit-backdrop-filter: none !important;
  backdrop-filter: none !important;
  background: linear-gradient(180deg, var(--brand) 0%, var(--brand-strong) 100%) !important;
}