/**
 * White theme for reveal.js. This is the opposite of the 'black' theme.
 *
 * By Hakim El Hattab, http://hakim.se
 */
@import url(./fonts/source-sans-pro/source-sans-pro.css);
section.has-dark-background, section.has-dark-background h1, section.has-dark-background h2, section.has-dark-background h3, section.has-dark-background h4, section.has-dark-background h5, section.has-dark-background h6 {
  color: #fff;
}

/*********************************************
 * GLOBAL STYLES
 *********************************************/
:root {
  --r-background-color: white;
  --r-main-font: Source Sans Pro, Helvetica, sans-serif;
  --r-main-font-size: 22px;
  --r-main-color: rgb(0, 0, 0);
  --r-block-margin: 20px;
  --r-heading-margin: 0 0 20px 0;
  --r-heading-font: Source Sans Pro, Helvetica, sans-serif;
  --r-heading-color: rgb(127, 82, 255);
  --r-heading-line-height: 1.2;
  --r-heading-letter-spacing: normal;
  --r-heading-text-transform: uppercase;
  --r-heading-text-shadow: none;
  --r-heading-font-weight: 600;
  --r-heading1-text-shadow: none;
  --r-heading1-size: 2.5em;
  --r-heading2-size: 1.6em;
  --r-heading3-size: 1.3em;
  --r-heading4-size: 1em;
  --r-code-font: monospace;
  --r-link-color: rgb(127, 82, 255);
  --r-link-color-dark: #4606ff;
  --r-link-color-hover: rgb(127, 82, 255) rgb(127, 82, 255), 15%;
  --r-selection-background-color: yellow;
  --r-selection-color: rgb(0, 0, 0);
  --r-overlay-element-bg-color: 0, 0, 0;
  --r-overlay-element-fg-color: 240, 240, 240;
}

.reveal-viewport {
  /*background: white;*/
  background-color: var(--r-background-color);
}

.reveal {
    font-family: var(--r-main-font), serif;
  font-size: var(--r-main-font-size);
  font-weight: normal;
  color: var(--r-main-color);
}

.reveal ::selection {
  color: var(--r-selection-color);
  background: var(--r-selection-background-color);
  text-shadow: none;
}

.reveal ::-moz-selection {
  color: var(--r-selection-color);
  background: var(--r-selection-background-color);
  text-shadow: none;
}

.reveal .slides section,
.reveal .slides section > section {
  line-height: 1.3;
  font-weight: inherit;
}

/*********************************************
 * HEADERS
 *********************************************/
.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  margin: var(--r-heading-margin);
  background: linear-gradient(45deg, #7F52FF, #B125EA, #E24462);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
    font-family: var(--r-heading-font), serif;
  font-weight: var(--r-heading-font-weight);
  line-height: var(--r-heading-line-height);
  letter-spacing: var(--r-heading-letter-spacing);
  text-transform: var(--r-heading-text-transform);
  text-shadow: var(--r-heading-text-shadow);
  word-wrap: break-word;
}

.reveal h1 {
  font-size: var(--r-heading1-size);
}

.reveal h2 {
  font-size: var(--r-heading2-size);
}

.reveal h3 {
  font-size: var(--r-heading3-size);
}

.reveal h4 {
  font-size: var(--r-heading4-size);
}

.reveal h1,
.reveal h2 {
  text-shadow: var(--r-heading1-text-shadow);
  background: none;
  -webkit-background-clip: revert;
  -webkit-text-fill-color: revert;
}

/*********************************************
 * OTHER
 *********************************************/
.reveal p {
  margin: var(--r-block-margin) 0;
  line-height: 1.3;
}

/* Remove trailing margins after titles */
.reveal h1:last-child,
.reveal h2:last-child,
.reveal h3:last-child,
.reveal h4:last-child,
.reveal h5:last-child,
.reveal h6:last-child {
  margin-bottom: 0;
}

/* Ensure certain elements are never larger than the slide itself */
.reveal img,
.reveal video,
.reveal iframe {
  max-width: 95%;
  max-height: 95%;
}

.reveal strong,
.reveal b {
  font-weight: bold;
}

.reveal em {
  font-style: italic;
}

.reveal ol,
.reveal dl,
.reveal ul {
  display: inline-block;
  text-align: left;
  margin: 0 0 0 1em;
}

.reveal ol {
  list-style-type: decimal;
}

.reveal ul {
  list-style-type: disc;
}

.reveal ul ul {
  list-style-type: square;
  font-size: smaller;
}

.reveal ul ul ul {
  list-style-type: circle;
  font-size: smaller;
}

.reveal li {
  padding-top: 8px;
  padding-bottom: 10px;
}

.reveal li > div,
.reveal li > p {
  font-size: 80%;
}

.reveal ul ul,
.reveal ul ol,
.reveal ol ol,
.reveal ol ul {
  display: block;
  margin-left: 40px;
}

.reveal dt {
  font-weight: bold;
}

.reveal dd {
  margin-left: 40px;
}

.reveal blockquote {
  display: block;
  position: relative;
  margin: var(--r-block-margin) auto;
  padding: 20px;
  /*width: 70%;*/
  /*width: 100%;*/
  font-style: italic;
  background: var(--kotlin-gradient-50);
  border-radius: 8px;
}

.reveal blockquote p:first-child,
.reveal blockquote p:last-child {
  display: inline-block;
}

.reveal q {
  font-style: italic;
}

.reveal pre {
  display: block;
  position: relative;
  width: 90%;
  margin: var(--r-block-margin) auto;
  text-align: left;
  font-size: 0.55em;
    font-family: var(--r-code-font), serif;
  line-height: 1.2em;
  word-wrap: break-word;
  /*box-shadow: 0 5px 15px rgba(0, 0, 0, 0.15);*/
}

.reveal code {
    font-family: var(--r-code-font), serif;
  text-transform: none;
  tab-size: 2;
}

.reveal pre code {
  display: block;
  padding: 5px;
  overflow: auto;
  max-height: 400px;
  word-wrap: normal;
}

.reveal .code-wrapper {
  white-space: normal;
}

.reveal .code-wrapper code {
  white-space: pre;
}

.reveal table {
  margin: auto;
  border-collapse: collapse;
  border-spacing: 0;
}

.reveal table th {
  font-weight: bold;
}

.reveal table th,
.reveal table td {
  text-align: left;
  padding: 0.2em 0.5em 0.2em 0.5em;
  border-bottom: 1px solid;
}

.reveal table th[align=center],
.reveal table td[align=center] {
  text-align: center;
}

.reveal table th[align=right],
.reveal table td[align=right] {
  text-align: right;
}

.reveal table tbody tr:last-child th,
.reveal table tbody tr:last-child td {
  border-bottom: none;
}

.reveal sup {
  vertical-align: super;
  font-size: smaller;
}

.reveal sub {
  vertical-align: sub;
  font-size: smaller;
}

.reveal small {
  display: inline-block;
  font-size: 0.6em;
  line-height: 1.2em;
  vertical-align: top;
}

.reveal small * {
  vertical-align: top;
}

.reveal img {
  margin: var(--r-block-margin) 0;
}

/*********************************************
 * LINKS
 *********************************************/
.reveal a {
  color: var(--r-link-color);
  text-decoration: none;
  transition: color 0.15s ease;
}

.reveal a:hover {
  color: var(--r-link-color-hover);
  text-shadow: none;
  border: none;
}

.reveal .roll span:after {
  color: #fff;
  background: var(--r-link-color-dark);
}

/*********************************************
 * Frame helper
 *********************************************/
.reveal .r-frame {
  border: 4px solid var(--r-main-color);
  box-shadow: 0 0 10px rgba(0, 0, 0, 0.15);
}

.reveal a .r-frame {
  transition: all 0.15s linear;
}

.reveal a:hover .r-frame {
  border-color: var(--r-link-color);
  box-shadow: 0 0 20px rgba(0, 0, 0, 0.55);
}

/*********************************************
 * NAVIGATION CONTROLS
 *********************************************/
.reveal .controls {
  color: var(--r-link-color);
}

/* White navigation arrows on gradient background slides */
.reveal:has(.slides section.present[data-background-gradient]) .controls {
  color: white;
}

/*********************************************
 * PROGRESS BAR
 *********************************************/
.reveal .progress {
  background: rgba(0, 0, 0, 0.2);
  color: var(--r-link-color);
}

/*********************************************
 * PRINT BACKGROUND
 *********************************************/
@media print {
  .backgrounds {
    background-color: var(--r-background-color);
  }
}
.reveal .column {
  float: left;
  width: 50%;
}

/* Clear floats after the columns */
.reveal .row:after {
  content: "";
  display: table;
  clear: both;
}

.reveal code.inline {
  color: var(--kotlin-color-3);
  font-weight: normal;
  background: whitesmoke;
  font-size: 80%;
}

.reveal .summary {
  font-style: italic;
  color: var(--kotlin-color-4);
  font-weight: bolder;
  width: 100%;
  padding-top: 14px;
  padding-bottom: 14px;
  border-top: 1px lightgrey solid;
  font-size: 90%;
}

.reveal .content {
  text-align: left;
  font-size: 80%;
  padding-top: 14px;
  border-top: 1px lightgrey solid;
}

.reveal .content-center {
  text-align: center;
}

.reveal .content-100 {
  font-size: 100%;
}

.reveal .highlight {
  color: var(--kotlin-color-1);
  font-weight: bold;
}

.reveal .block {
  display: block;
  padding-bottom: 8px;
}

.reveal hr {
  border-top: 1px lightgrey solid;
}

section[data-background-gradient="var(--kotlin-gradient)"] * {
  color: white;
}

::-moz-selection { /* Code for Firefox */
  color: red;
  background: yellow;
}

::selection {
  color: red;
  background: yellow;
}

.reveal ol, .reveal ul {
  margin-left: 40px;
}

.reveal li {
  padding: 4px;
}

:root {
  --kotlin-color-1: rgb(177, 37, 234);
  --kotlin-color-2: rgb(226, 68, 98);
  --kotlin-color-3: rgb(127, 82, 255);
  --kotlin-color-4: rgb(0, 0, 0);
  --kotlin-gradient: linear-gradient(45deg, rgb(127, 82, 255), rgb(177, 37, 234), rgb(226, 68, 98));
  --kotlin-gradient-50: linear-gradient(45deg, rgba(127, 82, 255, 0.5), rgba(177, 37, 234, 0.5), rgba(226, 68, 98, 0.5));
}

/* Kotlin Playground Styling */
.reveal code.kotlin-playground {
    background: #f8f8f8 !important;
    border: 1px solid #e0e0e0;
    border-radius: 4px;
    padding: 1em;
    margin: 0.5em 0;
    display: block;
    font-size: 0.8em;
    line-height: 1.4;
    white-space: pre;
    overflow-x: auto;
    color: #333 !important;
}

/* Exercise Slide Styling */
section[data-exercise="true"] {
    border-left: 5px solid #E87E04 !important;
    background: rgba(232, 126, 4, 0.05) !important;
    padding-left: 20px !important;
}

section[data-exercise="true"] h3::before {
    content: "\f303";
    font-family: "Font Awesome 6 Free";
    font-weight: 900;
    margin-right: 12px;
    color: #E87E04;
}

/* Exercise Link Card (links to learning server) */
.reveal .exercise-link-card {
    display: block;
    padding: 12px 16px;
    margin: 8px 0;
    background: #f8f8f8;
    border-left: 4px solid #7F52FF;
    border-radius: 0 8px 8px 0;
    transition: background 0.15s, transform 0.1s;
}

.reveal .exercise-link-card:hover {
    background: #f0ecff;
    transform: translateX(4px);
}

.reveal .exercise-link-card a {
    color: #7F52FF;
    text-decoration: none;
    font-size: 1em;
}

.reveal .exercise-link-card a:hover {
    text-decoration: underline;
}

.reveal .exercise-link-card span {
    color: #666;
    font-size: 0.85em;
}

/* Non-code exercise link card variants */
.reveal .text-analysis-link {
    border-left-color: #1565c0;
}
.reveal .text-analysis-link a {
    color: #1565c0;
}
.reveal .text-analysis-link:hover {
    background: #e3f2fd;
}

.reveal .code-review-link {
    border-left-color: #2e7d32;
}
.reveal .code-review-link a {
    color: #2e7d32;
}
.reveal .code-review-link:hover {
    background: #e8f5e9;
}

.reveal .quiz-link {
    border-left-color: #B125EA;
}
.reveal .quiz-link a {
    color: #B125EA;
}
.reveal .quiz-link:hover {
    background: #f3e5f5;
}

/* Content Card Styling */
.reveal .content-card {
    border: 1px solid rgba(127, 82, 255, 0.3);
    border-radius: 8px;
    padding: 1.5em;
    margin: 1em 0;
    box-shadow: 0 2px 8px rgba(0, 0, 0, 0.1);
    background: rgba(127, 82, 255, 0.02);
}