/* Base reveal.js styles — Syndicats brand (redesign-2026)
 *
 * Copy this file as styles.css for each new presentation.
 * Defaults to the Syndicats brand: IBM Plex Sans/Mono + brand palette.
 * Customize the CSS variables for your theme (or switch to the dark mode shown below).
 *
 * IMPORTANT: All font sizes use pt (points) for predictable sizing.
 * Base text is intentionally small (16pt) to fit content-heavy slides.
 * Use .text-lg, .text-xl, etc. classes when slides have less content.
 */

@import url('https://fonts.googleapis.com/css2?family=IBM+Plex+Sans:wght@300;400;500;600;700&family=IBM+Plex+Mono:wght@400;500;600&display=swap');

/* ===========================================
   CSS VARIABLES - Customize these for each presentation
   =========================================== */
:root {
  /* ===========================================
     BACKGROUND COLORS
     Syndicats light mode by default. For dark mode, set both backgrounds to
     #000019 (brand ink) and switch --text-color to #ffffff and
     --muted-color to rgba(255, 255, 255, 0.6) below.
     =========================================== */
  --background-color: #ffffff;              /* Main slide background */
  --section-divider-bg: #5b24b9;            /* Section divider background (brand purple) */

  /* Typography - Syndicats brand (IBM Plex). ALWAYS use pt for font sizes */
  --heading-font: "IBM Plex Sans", Helvetica, sans-serif;
  --body-font: "IBM Plex Sans", Helvetica, sans-serif;
  --mono-font: "IBM Plex Mono", monospace;  /* Eyebrow labels, code, captions */
  --base-font-size: 32px;   /* Only px value - sets reveal.js base */
  --text-size: 16pt;        /* Base body text - intentionally small */
  --h1-size: 48pt;
  --h2-size: 36pt;
  --h3-size: 24pt;
  --footnote-size: 11pt;

  /* Colors - Syndicats brand palette */
  --primary-color: #5b24b9;             /* Brand purple - main accent */
  --secondary-color: #fea9c6;           /* Brand pink - secondary accent */
  --accent-purple: #7a3cf6;             /* Light purple - hover / gradient pair */
  --ink: #000019;                       /* Near-black navy - dark surfaces */
  --text-color: #000019;                /* Main text - use #ffffff for dark backgrounds */
  --muted-color: rgba(0, 0, 25, 0.5);   /* Secondary text - use rgba(255,255,255,0.6) on dark */
  --line-color: rgba(0, 0, 25, 0.2);    /* Decorative lines */

  /* Layout */
  --slide-padding: 60px;
  --slide-padding-top: 40px;
  --content-gap: 30px;

  /* Border radius for custom components */
  --box-radius: 14px;          /* Brand uses generous rounding; set to 0 for sharp corners */
}

/* ===========================================
   BASE STYLES - Override reveal.js defaults
   =========================================== */

.reveal {
  font-family: var(--body-font);
  font-size: var(--base-font-size);
}

/* Restore bold after reset.css strips it with font: inherit */
.reveal strong,
.reveal b {
  font-weight: bold;
}

/* Apply background colors */
.reveal-viewport {
  background-color: var(--background-color);
}

/* Hide reveal's built-in nav arrows in every presentation — navigate with the
   arrow keys, space, or by clicking. */
.reveal .controls {
  display: none !important;
}

/* Section divider background via data-state */
.reveal-viewport.is-section-divider .slide-background.present {
  background-color: var(--section-divider-bg) !important;
}

.reveal h1,
.reveal h2,
.reveal h3,
.reveal h4,
.reveal h5,
.reveal h6 {
  font-family: var(--heading-font);
  text-transform: none;
  color: var(--text-color);
  font-weight: 700;   /* Brand headings are heavy/bold */
  line-height: 1.15;
}

.reveal h1 { font-size: var(--h1-size); }
.reveal h2 { font-size: var(--h2-size); margin-bottom: 0; }
.reveal h3 { font-size: var(--h3-size); }

.reveal p,
.reveal li,
.reveal td,
.reveal th,
.reveal blockquote {
  font-size: var(--text-size);
  color: var(--text-color);
  line-height: 1.5;
}

/* ===========================================
   LISTS
   =========================================== */

.reveal ul {
  list-style: none;
  padding-left: 0;
  margin: 15px 0;
}

.reveal ul li {
  position: relative;
  padding-left: 25px;
  margin-bottom: 10px;
}

.reveal ul li::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0.6em;
  width: 8px;
  height: 8px;
  background: var(--text-color);
  border-radius: 50%;
}

.reveal ul ul li::before {
  background: var(--muted-color);
  width: 6px;
  height: 6px;
}

/* Prevent double-sizing for nested elements */
.reveal blockquote p {
  font-size: inherit;
}

/* ===========================================
   SLIDE LAYOUT
   =========================================== */

.reveal .slides section {
  height: 100%;
  display: flex !important;
  flex-direction: column !important;
  padding: var(--slide-padding-top) var(--slide-padding) var(--slide-padding) var(--slide-padding) !important;
  box-sizing: border-box;
  text-align: left;
}

/* Vertical stack wrapper - no padding, just pass through */
.reveal .slides section.stack {
  padding: 0 !important;
}

/* Content area - fills remaining space */
.reveal .slides section > .content {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding-top: var(--content-gap);
  text-align: left;
}

/* Footnotes at bottom */
.reveal .slides section > .footnote {
  position: absolute;
  bottom: 15px;
  left: var(--slide-padding);
  right: var(--slide-padding);
  font-size: var(--footnote-size);
  color: var(--muted-color);
}

/* ===========================================
   SECTION DIVIDERS - Centered title slides
   =========================================== */

.reveal .slides section.section-divider {
  display: flex !important;
  flex-direction: column !important;
  justify-content: center !important;
  align-items: center !important;
  text-align: center;
}

.reveal .slides section.section-divider h1 {
  font-size: 60pt;
  text-align: center;
  /* Dividers default to the brand purple background, so the headline is pink */
  color: var(--secondary-color);
}

.reveal .slides section.section-divider p {
  font-size: 20pt;
  color: rgba(255, 255, 255, 0.8);
}

/* ===========================================
   TEXT SIZE UTILITIES

   Base text is 16pt - use these to scale UP when
   slides have less content and you want to fill space.
   =========================================== */

.text-lg { font-size: 18pt !important; }   /* Slightly larger */
.text-xl { font-size: 20pt !important; }   /* Medium emphasis */
.text-2xl { font-size: 24pt !important; }  /* Strong emphasis */
.text-3xl { font-size: 28pt !important; }  /* Very large */
.text-4xl { font-size: 32pt !important; }  /* Maximum body text */

/* Other text utilities */
.text-muted { color: var(--muted-color) !important; }
.text-center { text-align: center !important; }
.text-uppercase { text-transform: uppercase; letter-spacing: 0.1em; }
.font-light { font-weight: 300; }
.font-bold { font-weight: 600; }

/* ===========================================
   BLOCKQUOTES
   =========================================== */

.reveal blockquote {
  border-left: 4px solid var(--primary-color);
  padding-left: 20px;
  margin: 20px 0;
  font-style: italic;
  background: none;
  box-shadow: none;
  width: 100%;
  max-width: none;
}

.reveal blockquote cite {
  display: block;
  margin-top: 10px;
  font-style: normal;
  color: var(--muted-color);
}

/* ===========================================
   OPTIONAL: TITLE WITH UNDERLINE

   Add this to presentations where you want
   a line under the slide title.
   =========================================== */

/*
.reveal .slides section > h1,
.reveal .slides section > h2 {
  flex-shrink: 0;
  margin: 0;
  padding-bottom: 15px;
  border-bottom: 2px solid var(--line-color);
}
*/

/* ===========================================
   OPTIONAL: DECORATIVE ELEMENTS
   =========================================== */

/* Top decorative line on all slides */
/*
.reveal .slides section::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--primary-color);
}
*/

/* Bottom decorative line */
/*
.reveal .slides section::after {
  content: '';
  position: absolute;
  bottom: 40px;
  left: var(--slide-padding);
  right: var(--slide-padding);
  height: 2px;
  background: var(--line-color);
}
*/

/* ===========================================
   SYNDICATS BRAND UTILITIES
   Reusable pieces matching the brand decks:
   color-block slides, mono kicker + bold headline, white pill.
   =========================================== */

/* Mono kicker / lead-in line above a bold headline (brand signature lockup) */
.kicker {
  font-family: var(--mono-font);
  font-size: 17pt;
  font-weight: 500;
  color: var(--ink);
  margin: 0 0 8px 0;
}

/* Eyebrow - mono, uppercase, tracked out (smaller label than .kicker) */
.eyebrow {
  font-family: var(--mono-font);
  font-size: 13pt;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.18em;
  color: var(--primary-color);
  margin: 0 0 18px 0;
}

/* Purple -> pink gradient text (use sparingly; brand favors flat two-tone) */
.gradient-text {
  background: linear-gradient(135deg, var(--primary-color) 0%, var(--accent-purple) 45%, var(--secondary-color) 100%);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  color: transparent;
}

/* White rounded pill - logo lockup / tag */
.pill {
  display: inline-flex;
  align-items: center;
  gap: 12px;
  background: #ffffff;
  color: var(--primary-color);
  font-weight: 700;
  border-radius: 999px;
  padding: 12px 26px;
  font-size: 20pt;
  line-height: 1;
}
.pill i { color: var(--primary-color); }

/* Thin gradient accent bar */
.accent-bar {
  width: 72px;
  height: 6px;
  border-radius: 6px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
  margin: 0 0 26px 0;
}

/* ---- COLOR-BLOCK SLIDES ----
   Pair each class with a matching data-background-color on the <section>:
     <section class="on-purple" data-background-color="#5b24b9"> ... (pink/white text)
     <section class="on-pink"   data-background-color="#fea9c6"> ... (purple/ink text)
     <section class="on-dark"   data-background-color="#000019"> ... (white text) */

/* Purple background -> white body, pink accents (the "Fachkräftemangel?" look) */
.reveal .slides section.on-purple h1,
.reveal .slides section.on-purple h2,
.reveal .slides section.on-purple h3,
.reveal .slides section.on-purple p,
.reveal .slides section.on-purple li { color: #ffffff; }
.reveal .slides section.on-purple .kicker { color: rgba(255, 255, 255, 0.8); }
.reveal .slides section.on-purple .text-muted { color: rgba(255, 255, 255, 0.65) !important; }
.reveal .slides section.on-purple .footnote { color: rgba(255, 255, 255, 0.55); }
.reveal .slides section.on-purple ul li::before { background: var(--secondary-color); }

/* Pink background -> ink body, purple headings (the "für große Aufgaben." look) */
.reveal .slides section.on-pink h1,
.reveal .slides section.on-pink h2,
.reveal .slides section.on-pink h3 { color: var(--primary-color); }
.reveal .slides section.on-pink p,
.reveal .slides section.on-pink li { color: var(--ink); }
.reveal .slides section.on-pink .kicker { color: var(--ink); }
.reveal .slides section.on-pink .text-muted { color: rgba(0, 0, 25, 0.6) !important; }
.reveal .slides section.on-pink .footnote { color: rgba(0, 0, 25, 0.55); }
.reveal .slides section.on-pink ul li::before { background: var(--primary-color); }

/* Ink background -> white body, pink accents */
.reveal .slides section.on-dark h1,
.reveal .slides section.on-dark h2,
.reveal .slides section.on-dark h3,
.reveal .slides section.on-dark p,
.reveal .slides section.on-dark li { color: #ffffff; }
.reveal .slides section.on-dark .kicker { color: rgba(255, 255, 255, 0.8); }
.reveal .slides section.on-dark .text-muted { color: rgba(255, 255, 255, 0.62) !important; }
.reveal .slides section.on-dark .footnote { color: rgba(255, 255, 255, 0.5); }
.reveal .slides section.on-dark ul li::before { background: var(--secondary-color); }

/* ===========================================
   TWEET / SOCIAL CARD
   Faithful preview of a real tweet. See references/tweet-embeds.md
   for the data-fetch workflow + HTML template.
   =========================================== */
.tweet-card {
  position: relative;
  width: 100%;
  max-width: 720px;
  background: #ffffff;
  border: 1px solid rgba(0, 0, 25, 0.1);
  border-radius: 18px;
  box-shadow: 0 18px 50px rgba(0, 0, 25, 0.12);
  padding: 30px 36px 24px;
  overflow: hidden;
}
/* Brand gradient strip along the top of the card */
.tweet-card::before {
  content: '';
  position: absolute;
  top: 0; left: 0; right: 0;
  height: 5px;
  background: linear-gradient(135deg, var(--primary-color), var(--secondary-color));
}
.tweet-head {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 18px;
}
.tweet-avatar {
  width: 54px; height: 54px;
  border-radius: 50%;
  object-fit: cover;
  flex-shrink: 0;
}
.tweet-name {
  font-size: 17pt;
  font-weight: 700;
  color: var(--ink);
  margin: 0;
  line-height: 1.2;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tweet-badge { color: #1d9bf0; font-size: 14pt; }   /* blue verified check */
.tweet-handle {
  font-size: 14pt;
  color: var(--muted-color);
  margin: 2px 0 0;
}
.tweet-logo {
  font-size: 22pt;
  color: var(--ink);
  margin-left: auto;
  align-self: flex-start;
}
.tweet-body {
  font-size: 18pt;
  line-height: 1.5;
  color: var(--ink);
  margin: 0 0 14px;
}
.tweet-meta {
  font-size: 12.5pt;
  color: var(--muted-color);
  margin: 18px 0 0;
}
.tweet-stats {
  display: flex;
  align-items: center;
  gap: 40px;
  margin-top: 14px;
  padding-top: 16px;
  border-top: 1px solid rgba(0, 0, 25, 0.08);
}
.tweet-stats p {
  font-size: 14pt;
  color: var(--muted-color);
  margin: 0;
  display: flex;
  align-items: center;
  gap: 8px;
}

/* Attached tweet media shown beside the card (two-column layout).
   NOTE: cap the <img> with an explicit pixel max-height on tall/portrait
   images — a percentage max-height can't resolve against an auto grid row,
   so the image overflows the slide. See references/tweet-embeds.md. */
.tweet-media {
  display: flex;
  align-items: center;
  justify-content: center;
  min-height: 0;
  min-width: 0;
}
.tweet-media img {
  max-width: 100%;
  border-radius: 14px;
  border: 1px solid rgba(0, 0, 25, 0.1);
  box-shadow: 0 18px 50px rgba(0, 0, 25, 0.14);
}

/* ===========================================
   FANCY FRAGMENT ANIMATIONS (progressive disclosure)
   Opt-in: add to any element together with `fragment`.
     <p class="fragment rise">...</p>
     <p class="pill fragment pop">...</p>
   See references/advanced-features.md.
   =========================================== */

/* Rise + fade + subtle de-blur (text, cards, stats) */
.reveal .fragment.rise {
  opacity: 0;
  transform: translateY(30px);
  filter: blur(6px);
  transition: opacity 0.9s ease, transform 0.9s cubic-bezier(0.22, 1, 0.36, 1), filter 0.9s ease;
}
.reveal .fragment.rise.visible {
  opacity: 1;
  transform: translateY(0);
  filter: blur(0);
}

/* Pop / scale-in with a gentle overshoot (pills, badges, numbers) */
.reveal .fragment.pop {
  opacity: 0;
  transform: scale(0.82);
  transition: opacity 0.6s ease, transform 0.75s cubic-bezier(0.34, 1.56, 0.64, 1);
}
.reveal .fragment.pop.visible {
  opacity: 1;
  transform: scale(1);
}

/* ===========================================
   KI-SPOTLIGHT: TIMELINE (Slide 3)
   =========================================== */

.timeline {
  display: flex;
  align-items: flex-start;
  width: 100%;
  padding: 10px 0;
}

.timeline-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  position: relative;
}

/* Connector line from center of this dot to center of next */
.timeline-item:not(:last-child)::after {
  content: '';
  position: absolute;
  top: 22px;
  left: 50%;
  width: 100%;
  height: 3px;
  background: rgba(255, 255, 255, 0.22);
  z-index: 0;
}

.timeline-dot {
  width: 46px;
  height: 46px;
  border-radius: 50%;
  background: #fea9c6;
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  z-index: 1;
  flex-shrink: 0;
}

.timeline-dot.pre {
  background: rgba(255, 255, 255, 0.15);
  border: 2px solid rgba(255, 255, 255, 0.4);
}

.timeline-dot i { color: #5b24b9; font-size: 15pt; }
.timeline-dot.pre i { color: rgba(255, 255, 255, 0.75); }

.timeline-label {
  font-family: var(--mono-font);
  font-size: 10pt;
  font-weight: 500;
  text-transform: uppercase;
  letter-spacing: 0.1em;
  color: rgba(255, 255, 255, 0.6);
  margin: 14px 0 0 0;
  text-align: center;
}

.timeline-title {
  font-size: 14pt;
  font-weight: 700;
  color: #ffffff;
  margin: 6px 0 0 0;
  text-align: center;
  line-height: 1.3;
}

.timeline-desc {
  font-size: 11pt;
  color: rgba(255, 255, 255, 0.55);
  margin: 6px 0 0 0;
  text-align: center;
  line-height: 1.4;
}

/* ===========================================
   KI-SPOTLIGHT: DELIVERABLES (Slide 7)
   =========================================== */

.deliverable {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 18px 22px;
  background: rgba(255, 255, 255, 0.1);
  border-radius: 12px;
}

.deliverable-icon {
  width: 40px;
  height: 40px;
  background: #fea9c6;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}

.deliverable-icon i {
  color: #5b24b9;
  font-size: 14pt;
}

/* Eyebrow color on color-block slides */
.reveal .slides section.on-purple .eyebrow { color: rgba(255, 255, 255, 0.6); }
.reveal .slides section.on-pink .eyebrow { color: var(--primary-color); }