/* ============================================
   CSS Variables
============================================ */
:root
{
    --accent-color: #1B1B1B;
    --accent-color-rgb: 27, 27, 27;
    --accent-hover: #3C3C3C;

    --bs-primary: var(--accent-color);
    --bs-primary-rgb: var(--accent-color-rgb);

    --bs-link-color: var(--bs-primary);
    --bs-link-hover-color: var(--accent-hover);

    --bs-link-color-rgb: var(--accent-color-rgb);
    --bs-link-hover-color-rgb: 60, 60, 60;

    --bs-border-radius: 1rem;
    --bs-border-radius-sm: 0.4rem;
    --bs-border-radius-lg: 3rem;
}

/* ============================================
   Fonts
============================================ */
@font-face
{
    font-family: 'NyghtSerif-Light';
    src: url('../fonts/NyghtSerif-Light.woff') format('woff');
    font-weight: normal;
    font-style: normal;
    font-display: swap;
}

/* Google Sans — self-hosted variable font */
@font-face {
    font-family: 'Google Sans';
    src: url('../fonts/GoogleSans-cyrillic-ext.woff2') format('woff2');
    font-weight: 400 700;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0460-052F, U+1C80-1C8A, U+20B4, U+2DE0-2DFF, U+A640-A69F, U+FE2E-FE2F;
}

@font-face {
    font-family: 'Google Sans';
    src: url('../fonts/GoogleSans-cyrillic.woff2') format('woff2');
    font-weight: 400 700;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0301, U+0400-045F, U+0490-0491, U+04B0-04B1, U+2116;
}

@font-face {
    font-family: 'Google Sans';
    src: url('../fonts/GoogleSans-latin-ext.woff2') format('woff2');
    font-weight: 400 700;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0100-02BA, U+02BD-02C5, U+02C7-02CC, U+02CE-02D7, U+02DD-02FF, U+0304, U+0308, U+0329, U+1D00-1DBF, U+1E00-1E9F, U+1EF2-1EFF, U+2020, U+20A0-20AB, U+20AD-20C0, U+2113, U+2C60-2C7F, U+A720-A7FF;
}

@font-face {
    font-family: 'Google Sans';
    src: url('../fonts/GoogleSans-latin.woff2') format('woff2');
    font-weight: 400 700;
    font-style: normal;
    font-display: swap;
    unicode-range: U+0000-00FF, U+0131, U+0152-0153, U+02BB-02BC, U+02C6, U+02DA, U+02DC, U+0304, U+0308, U+0329, U+2000-206F, U+20AC, U+2122, U+2191, U+2193, U+2212, U+2215, U+FEFF, U+FFFD;
}

/* ============================================
   Base Typography
============================================ */
html,
body
{
    background-color: #FFFFFF !important;
    background-repeat: no-repeat;
    background-position: top right;
    background-attachment: fixed;
    font-size: 18px;
    font-family: "Google Sans", sans-serif;
    font-weight: 300;
    line-height: 160%;
    color: #000000;
}

h1,
h2,
h3,
h4,
h5,
h6
{
    font-weight: 700;
    color: #101010;
    margin-top: 40px;
    margin-bottom: 20px;
}

h2
{
    font-size: 30px;
    line-height: 140%;
}

h3
{
    font-size: 24px;
    line-height: 140%;
}

dl,
ol,
ul
{
    margin-top: 0;
    margin-bottom: 32px;
}

ul
{
    display: block;
    list-style-type: disc;
    margin-inline-start: 0px;
    margin-inline-end: 0px;
    unicode-bidi: isolate;
}

ul li a
{
    font-weight: 600;
}

ul>li
{
    margin-bottom: 8px;
}

ul>li:last-child
{
    margin-bottom: 0;
}

body p
{
    margin-bottom: 15px;
}

body p,
body li
{
    line-height: 160%;
}

body a
{
    color: #0037ED;
    -webkit-transition: color 0.3s ease;
    transition: color 0.3s ease;
    text-decoration: none;
    font-weight: bold;
}

body a:hover,
body a:focus
{
    color: #0F35B4;
}

span.secondary-title
{
    font-family: "NyghtSerif-Light", sans-serif;
}

/* ============================================
   Layout
============================================ */
.wrap
{
    display: block;
    height: auto;
    margin: 0 auto;
    padding: 0;
}

.wrap > .container
{
    padding: 0px 15px 20px;
}

.wrap-flex
{
    display: flex;
    flex-direction: column;
    min-height: 100vh;
    margin: 0;
    padding: 0;
}

.wrap.bg-gray,
.wrap-flex.bg-gray
{
    background: #F8F8F8;
}

#wrap-content
{
    display: block;
}

#wrap-content .row .main-content
{
    margin-left: 0px;
    margin-right: 0px;
    padding-left: 24px;
    padding-right: 24px;
}

/* <= 768px (SM) */
@media (max-width: 768px)
{
    #wrap-content .row .main-content
    {
        padding-left: 16px;
        padding-right: 16px;
    }
}

/* <= 576px (XS) */
@media (max-width: 576px)
{
    #wrap-content .row .main-content
    {
        padding-left: 12px;
        padding-right: 12px;
    }
}

#wrap-content-flex
{
    flex: 1;
}

div.content-card {
    border-radius: 32px;
    padding: 40px;
    background: #F6F6F6;
    box-shadow: none;
}

.bg-gray div.content-card {
    background: white;
    box-shadow: 0px 32px 64px rgba(12, 20, 100, 0.1);
}

div.content-card h1 {
    margin-top:0;
}

div.content-card hr
{
    margin-top: 32px;
    margin-bottom: 32px;
    width: 100%;
    color: #9e9e9e;
}

.bg-gray div.content-card hr
{
    color: #aeaeae;
}

@media (min-width: 768px) {
    .container-fluid {
        padding-left: 40px;
        padding-right: 40px;
    }
}

div.nav-new {
    margin-bottom: 80px;
}

/* ============================================
   Alerts
============================================ */
.alert
{
    border: none;
    border-radius: 16px;
}

/* ============================================
   Accent Block (from layout-light)
============================================ */
.accent-block
{
    background: #F6F6F6;
    padding: 32px;
    border-radius: 32px;
    margin: 40px 0px 40px 0px;
    border: 0;
}

.accent-block h2,
.accent-block p.title
{
    margin-top: 0;
}

.accent-block.purple
{
    background-image: url('/files/imgs/pages/page/read/purple-accent-bg.jpg');
    background-repeat: no-repeat;
    background-position: top left;
    background-size: contain;
    background-color: #F6F6F6;
}

/* ============================================
   Bootstrap .btn-primary overrides
============================================ */
.btn-primary
{
    --bs-btn-color: #fff;
    --bs-btn-bg: var(--accent-color);
    --bs-btn-border-color: var(--accent-color);
    --bs-btn-hover-color: #fff;
    --bs-btn-hover-bg: var(--accent-hover);
    --bs-btn-hover-border-color: var(--accent-hover);
    --bs-btn-active-bg: var(--accent-hover);

    padding-left: 40px;
    padding-right: 40px;
    width: auto;
    height: 64px;
    border-radius: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: var(--accent-color);
    color: white;
    font-size: 18px;
    line-height: 1.24;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 0;
    transition: transform 0.2s ease-in-out;
}

.btn-primary:hover,
.btn-primary:active,
.btn-primary:focus
{
    color: white;
    fill: white;
    background-color: var(--accent-color);
    transition: transform 0.2s ease-in-out;
    transform: scale(1.03);
}

/* ============================================
   Bootstrap .btn-secondary overrides
============================================ */
.btn-secondary
{
    padding-left: 40px;
    padding-right: 40px;
    width: auto;
    height: 64px;
    border-radius: 32px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    background-color: transparent;
    color: var(--accent-color);
    font-size: 18px;
    line-height: 1.24;
    font-weight: 600;
    text-decoration: none;
    cursor: pointer;
    border: 1px solid var(--accent-color);
    transition: transform 0.2s ease-in-out;
}

.btn-secondary:hover,
.btn-secondary:active,
.btn-secondary:focus
{
    color: var(--accent-color);
    fill: var(--accent-color);
    background-color: transparent;
    transition: transform 0.2s ease-in-out;
    transform: scale(1.03);
}

/* ============================================
   Shared Button Styles (from admin5)
============================================ */
.btn {
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    font-size: 18px;
    font-weight: 600;
    border-radius: 32px;
    transition: transform 0.15s ease-in-out,
                width 0.2s ease-in-out,
                padding 0.2s ease-in-out,
                background-color 0.15s ease-in-out,
                border-color 0.15s ease-in-out;
}

.btn:active {
    transform: scale(0.95);
}

.btn.btn-sm {
    font-size: 14px;
    border-radius: 20px;
}

.btn.btn-md {
    padding: 6px 24px;
    line-height: 1.5;
    height: 48px;
    border-radius: 28px;
}

.btn.btn-md svg {
    width: 24px;
    height: 24px;
}

.btn svg {
    width: 24px;
    height: 24px;
}

.btn-outline-secondary {
    border-color: #DFE3E7;
    background: white;
    color: black;
}

.btn-outline-secondary:hover {
    background: #F8F9FA;
    border-color: #DFE3E7;
    color: black;
}

.btn-outline-secondary:active {
    background: #F8F9FA;
    border-color: #DFE3E7;
    color: black;
}

.btn:disabled,
.btn-secondary:disabled {
    color: darkgray;
    background: white;
}

.btn-outline-secondary:disabled {
    color: #adb5bd;
    border-color: #d3d8de;
}

.btn-danger:disabled {
    background-color: #e47a84;
    border-color: #e47a84;
    color: #ffffff;
    opacity: 1;
}

.btn-primary:disabled {
    background: #2E2E2E;
}

/* ============================================
   Badge (from admin5)
============================================ */
.badge {
    font-size: 18px;
    border-radius: 32px;
    padding-left: 14px;
    padding-right: 14px;
}

.badge-sm {
    font-size: 16px;
    padding-left: 10px;
    padding-right: 10px;
}

.badge.bg-success {
    background-color: #E8F7F0 !important;
    color: #198754;
}

.badge.bg-danger {
    background-color: #FDE8E8 !important;
    color: #D94856;
}

.badge.bg-secondary {
    background-color: #EDF2F3 !important;
    color: #425D68;
}

.badge.bg-warning {
    background-color: #F7F6D5 !important;
    color: #DBAD08;
}

/* ============================================
   Pagination (from admin5)
============================================ */
.active>.page-link, .page-link.active {
    background: var(--accent-color);
    border-color: var(--accent-color);
}

.page-item:last-child .page-link {
    border-top-right-radius:  64px;
    border-bottom-right-radius:  64px;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

.page-item:first-child .page-link{
    border-top-left-radius:  64px;
    border-bottom-left-radius:  64px;
    padding-left: 0.5rem;
    padding-right: 0.5rem;
}

/* ============================================
   Round Buttons
============================================ */
.round-btn-primary
{
    width: 64px;
    height: 64px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-color);
    color: white;
    cursor: pointer;
    border: 0;
    transition: transform 0.2s ease-in-out;
}

.round-btn-primary:hover
{
    color: white;
}

.round-btn-primary img,
.round-btn-primary svg
{
    transition: transform 0.2s ease-in-out;
}

.round-btn-primary:hover img,
.round-btn-primary:active img,
.round-btn-primary:focus img,
.round-btn-primary:hover svg,
.round-btn-primary:active svg,
.round-btn-primary:focus svg
{
    transform: scale(1.2);
    color: white;
    fill: white;
}

/* Used for scroll to top rounded button (bottom right corner) */
#scroll-to-top,
#scroll-to-top-btn
{
    position: fixed;
    bottom: 40px;
    right: 40px;
    z-index: 998;
}

/* <= 768px (SM) */
@media (max-width: 768px)
{
    #scroll-to-top,
    #scroll-to-top-btn
    {
        right: 16px;
    }
}

/* <= 576px (XS) */
@media (max-width: 576px)
{
    #scroll-to-top,
    #scroll-to-top-btn
    {
        right: 12px;
    }
}

.btn-primary-round,
.btn-primary-round a,
a.btn-primary-round
{
    width: 64px;
    height: 64px;
    background-color: var(--accent-color);
    color: #ffffff;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    cursor: pointer;
    border: 0;
}

.btn-primary-round img,
.btn-primary-round svg,
.btn-primary-round a img,
.btn-primary-round a svg,
a.btn-primary-round img,
a.btn-primary-round svg
{
    transition: transform 0.2s ease-in-out;
}

.btn-primary-round img:hover,
.btn-primary-round svg:hover,
.btn-primary-round a img:hover,
.btn-primary-round a svg:hover,
a.btn-primary-round img:hover,
a.btn-primary-round svg:hover
{
    transform: scale(1.2);
}

/* Used for scroll to top rounded button */
.rounded-btn
{
    width: 50px;
    height: 50px;
    padding: 8px;
    z-index: 999;
    border: 1px solid white;
    text-align: center;
    background: var(--accent-color);
    font-weight: bold;
    color: white;
    text-decoration: none;
    position: fixed;
    display: none;
    font-size: 25px;
    border-radius: 60px 60px 60px 60px;
    -moz-border-radius: 60px 60px 60px 60px;
    -webkit-border-radius: 60px 60px 60px 60px;
}

.rounded-btn:hover,
.rounded-btn:focus
{
    text-decoration: none;
    color: white !important;
}

/* help classes to see what screen size is currently active */
.screen-size-container
{
    display: block;
    height: auto;
    width: auto;
    padding: 8px 12px;
    position: fixed;
    background-color: white;
    color: black;
    bottom: 32px;
    left: 32px;
    border: 3px solid black;
    font-size: 32px;
    font-weight: bold;
    font-family: "Google Sans", sans-serif;
    text-align: center;
    z-index: 19999;
}

.screen-size-container span
{
    font-size: 14px;
    font-weight: normal;
    font-family: "Google Sans", sans-serif;
    display: block;
}

button.btn-round-primary-lg,
.btn-round-primary-lg a
{
    min-width: 64px;
    max-width: 64px;
    min-height: 64px;
    max-height: 64px;
    border-radius: 50%;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    background-color: var(--accent-color);
    color: white;
    cursor: pointer;
    border: 0;
    transition: background-color 0.2s ease-in-out;
}

button.btn-round-primary-lg img,
.btn-round-primary-lg a img
{
    transition: transform 0.2s ease-in-out;
}

button.btn-round-primary-lg:hover,
.btn-round-primary-lg a:hover
{
    background-color: #000000;
}

button.btn-round-primary-lg:hover img,
.btn-round-primary-lg a:hover img
{
    transform: scale(1.2);
}

@media only screen and (max-width: 768px)
{
    .btn-responsive
    {
        width: 100%;
        padding-top: 16px;
        padding-bottom: 16px;
    }
}

/* ============================================
   Ripple Animation
============================================ */
@keyframes ripple-effect {
    0% {
      transform: translate(-50%, -50%) scale(0);
      opacity: 1;
    }
    50% {
      transform: translate(-50%, -50%) scale(1.75);
      opacity: 0.5;
    }
    100% {
      transform: translate(-50%, -50%) scale(3.5);
      opacity: 0;
    }
  }

  /* Base styles for ripple-enabled buttons */
  .btn-primary,
  .btn-secondary,
  .round-btn-primary,
  .nav-round-btn > a,
  .btn-primary-round,
  .rounded-btn,
  .btn-tf
  {
    position: relative;
    overflow: hidden;
    z-index: 0;
  }

  /* Base style for the ripple pseudo-element */
  .btn-primary::after,
  .btn-secondary::after,
  .round-btn-primary::after,
  .nav-round-btn > a::after,
  .btn-primary-round::after,
  .rounded-btn::after,
  .btn-tf::after
  {
    content: '';
    position: absolute;
    top: 50%;
    left: 50%;
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.75) 40%, transparent 70%);
    border-radius: 50%;
    transform: translate(-50%, -50%) scale(0);
    opacity: 0;
    pointer-events: none;
    z-index: 1;
  }

  .btn-primary::after {
    background: radial-gradient(circle, rgba(255, 255, 255, 0.75) 40%, transparent 70%);
  }
  .btn-primary.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

  .btn-secondary::after {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.25) 40%, transparent 70%);
  }
  .btn-secondary.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

  .round-btn-primary::after {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.75) 40%, transparent 70%);
  }
  .round-btn-primary.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

  .nav-round-btn > a::after {
    width: 70px;
    height: 70px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.75) 40%, transparent 70%);
  }
  .nav-round-btn > a.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

  .btn-primary-round::after {
    width: 80px;
    height: 80px;
    background: radial-gradient(circle, rgba(255, 255, 255, 0.75) 40%, transparent 70%);
  }
  .btn-primary-round.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

  .btn-tf::after {
    width: 100px;
    height: 100px;
    background: radial-gradient(circle, rgba(0, 0, 0, 0.15) 40%, transparent 70%);
  }
  .btn-tf.ripple-active::after {
    animation: ripple-effect 0.6s ease-out;
  }

/* ============================================
   Tile cards (shared across pages)
============================================ */
.tile
{
    border-radius: 32px;
    color: #000000;
    padding: 28px;
    display: block;
    transition: all 0.4s ease-in-out;
    text-decoration: none;
}

.tile:hover
{
    color: #000000;
    text-decoration: none;
    transform: scale(1.025);
}

.tile-training
{
    background-color: #F6F6F6;
    min-height: 200px;
    height: calc(100% - 24px);
    position: relative;
    margin-bottom: 24px;
}

.tile-training h3
{
    font-size: 24px;
    font-family: "Google Sans", sans-serif;
    font-weight: 700;
    line-height: 1.15;
    margin: 0 0 10px 0;
}

.tile-training p
{
    font-size: 28px;
    font-family: "Google Sans", sans-serif;
    font-weight: 500;
    line-height: 1.24;
}

.tile-training-category
{
    display: inline-block;
    background-color: #e0e0e0;
    color: #000;
    font-size: 14px;
    font-weight: 500;
    padding: 4px 12px;
    border-radius: 999px;
    margin-bottom: 8px;
}

.tile-training-desc
{
    font-size: 16px !important;
    font-weight: 400 !important;
    color: #444;
    margin-top: 4px;
    line-height: 1.4 !important;
}

/* Tile responsive: <= 767px (mobile) */
@media (max-width: 767px)
{
    .tile.tile-training
    {
        display: flex;
        flex-direction: column;
        height: auto;
        padding-bottom: 32px;
    }
}

/* Tile responsive: <= 460px */
@media (max-width: 460px)
{
    .tile-training h3
    {
        font-size: 38px;
    }

    .tile-training
    {
        padding-top: 32px;
        padding-left: 32px;
        padding-right: 32px;
    }
}

/* Tile responsive: <= 360px */
@media (max-width: 360px)
{
    .tile-training h3
    {
        font-size: 30px;
    }

    .tile-training
    {
        padding-top: 24px;
        padding-left: 24px;
        padding-right: 24px;
    }
}

/* Tile responsive: SM-MD (576-768px) */
@media (min-width: 576px) and (max-width: 768px)
{
    .tile-training
    {
        min-height: 200px;
        margin-bottom: 24px;
    }

    .tile-training h3
    {
        font-size: 40px;
    }

    .tile-training p
    {
        font-size: 24px;
    }
}

/* Tile responsive: MD-LG (768-992px) */
@media (min-width: 768px) and (max-width: 992px)
{
    .tile-training h3
    {
        font-size: 36px;
    }

    .tile-training p
    {
        font-size: 24px;
    }
}

/* ============================================
   My Learning page
============================================ */
.my-learning-stats
{
    margin-top: 12px;
}

.my-learning-subtitle
{
    display: block;
    font-size: 15px;
    font-weight: 400;
    color: #666;
    line-height: 1.4;
}

.my-learning-progress-bar
{
    width: 100%;
    height: 8px;
    background-color: #e0e0e0;
    border-radius: 4px;
    margin-top: 12px;
    overflow: hidden;
}

.my-learning-progress-fill
{
    height: 100%;
    background-color: #2baf59;
    border-radius: 4px;
    transition: width 0.3s ease;
}

.my-learning-progress-text
{
    display: block;
    font-size: 13px;
    color: #999;
    margin-top: 6px;
}

/* ============================================
   Topic page stats row
============================================ */
.topic-stats-row
{
    display: flex;
    align-items: center;
    background: #f5f5f5;
    border-radius: 12px;
    padding: 14px 0;
}

.topic-stat-item
{
    flex: 1;
    display: flex;
    flex-direction: column;
    align-items: center;
    gap: 2px;
}

.topic-stat-value
{
    font-size: 22px;
    font-weight: 700;
}

.topic-stat-label
{
    font-size: 13px;
    color: #888;
}

.topic-stat-divider
{
    width: 1px;
    height: 32px;
    background: #ddd;
}

/* ============================================
   Mastery heatmap
============================================ */
.mastery-heatmap-grid
{
    display: flex;
    flex-wrap: wrap;
    gap: 3px;
}

.heatmap-cell
{
    width: 14px;
    height: 14px;
    border-radius: 2px;
    cursor: pointer;
}

.mastery-heatmap-legend
{
    display: flex;
    align-items: center;
    gap: 4px;
}

.heatmap-legend-square
{
    display: inline-block;
    width: 12px;
    height: 12px;
    border-radius: 2px;
}

.heatmap-tooltip
{
    position: absolute;
    z-index: 1000;
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 8px 10px;
    font-size: 12px;
    max-width: 220px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    pointer-events: none;
    line-height: 1.4;
}

.heatmap-info-icon
{
    display: inline-flex;
    align-self: flex-end;
}

.heatmap-info-icon svg
{
    display: block;
}

.heatmap-info-icon .heatmap-info-tooltip
{
    display: none;
    position: absolute;
    left: 32px;
    top: 50%;
    transform: translateY(-50%);
    background: #fff;
    border: 1px solid #e0e0e0;
    border-radius: 8px;
    padding: 10px 12px;
    font-size: 13px;
    font-weight: 400;
    width: 300px;
    box-shadow: 0 2px 8px rgba(0,0,0,0.12);
    line-height: 1.5;
    color: #555;
    z-index: 100;
}

.heatmap-info-icon:hover .heatmap-info-tooltip
{
    display: block;
}

/* ============================================
   Session size picker
============================================ */
.session-size-picker .btn
{
    min-width: 48px;
}

/* ============================================
   Last session card
============================================ */
.last-session-card
{
    display: flex;
    align-items: center;
    justify-content: space-between;
    padding: 16px;
    background: #f5f5f5;
    border-radius: 12px;
    text-decoration: none;
    color: inherit;
}

.last-session-card:hover
{
    background: #ececec;
    text-decoration: none;
    color: inherit;
}

/* ============================================
   Daily activity chart
============================================ */
.daily-activity-card
{
    background: #f5f5f5;
    border-radius: 16px;
    padding: 20px 24px;
}

.daily-activity-chart
{
    width: 100%;
    height: 160px;
}

.daily-chart-bar
{
    fill: #2baf59;
}

.daily-chart-axis
{
    font-size: 12px;
    fill: #999;
}

.daily-chart-gridline
{
    stroke: #e0e0e0;
    stroke-width: 1;
}