/* Deck core styles — theme-agnostic layout, reveal, effects, navigation */

/* === Reset & base === */
*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

body {
  font-family: var(--font-body, inter), system-ui, sans-serif;
  font-size: var(--font-base, 1rem);
  font-weight: var(--weight-body, 400);
  line-height: var(--leading-body, 1.6);
  color: var(--color-text-resolved, #0f0f13);
  background: var(--color-bg-resolved, #ffffff);
  -webkit-font-smoothing: antialiased;
}

/* === Viewport & slide frame === */
.viewport {
  width: 100%;
  height: 100vh;
  height: 100dvh;
  overflow: hidden;
  position: relative;
}

.slide {
  width: 100%;
  height: 100%;
  display: flex;
  flex-direction: column;
  padding: 4rem 1.5rem 1.5rem;
  overflow: hidden;
  position: relative;
}

.slide.scrollable { overflow-y: auto; }
.slide.slide-split { padding: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; }
.slide.slide-split-stack { padding: 0; overflow-y: auto; -webkit-overflow-scrolling: touch; }

/* === Layout: cover (structural only) === */
.layout-cover {
  display: flex;
  flex-direction: column;
  justify-content: flex-end;
  align-items: flex-start;
  text-align: left;
  width: 100%;
  height: 100%;
  padding-bottom: 40px;
  position: relative;
}

.slide[data-align="center"] .layout-cover { align-items: center; text-align: center; }
.slide[data-align="right"] .layout-cover { align-items: flex-end; text-align: right; }
.slide[data-valign="top"] .layout-cover { justify-content: flex-start; padding-bottom: 0; }
.slide[data-valign="middle"] .layout-cover { justify-content: center; padding-bottom: 0; }

/* === Layout: statement (structural only) === */
.layout-statement {
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  width: 100%;
  height: 100%;
}

/* === Layout: full === */
.layout-full {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  width: 100%;
  height: 100%;
  container-type: inline-size;
  container-name: region;
}

.slide[data-align="center"] .layout-full { align-items: center; text-align: center; }

/* === Layout: split (mobile-first: natural stacking, no fixed heights) === */
.layout-split {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.layout-split .split-header {
  padding: 4rem 1.5rem 0;
  width: 100%;
}

.panel {
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: var(--space-md, 2rem) 1.5rem;
  position: relative;
  container-type: inline-size;
  container-name: region;
}

/* First panel in a split (when no split-header precedes it) needs
   top clearance for the hamburger overlay on mobile. */
.layout-split > .panel:first-child {
  padding-top: 4rem;
}

.panel.scrollable { overflow-y: auto; }

/* === Layout: split-stack (mobile-first: natural stacking) === */
.layout-split-stack {
  display: flex;
  flex-direction: column;
  width: 100%;
}

.layout-split-stack .split-stack-header {
  padding: 4rem 1.5rem 0;
  width: 100%;
}

.layout-split-stack > .panel:first-child {
  padding-top: 4rem;
}

/* Panel-stacked zeroes its own padding — children handle their own */
.panel-stacked { padding: 0; }

/* === Divider elements — positioned by the renderer === */
.divider { pointer-events: none; flex-shrink: 0; }
.divider-h { width: 100%; }
.divider-v { display: none; }

/* Stacked panels: divider between panels on mobile (horizontal) */
.stacked-panel {
  display: flex;
  flex-direction: column;
  justify-content: center;
  padding: var(--space-md, 2rem) 1.5rem;
  container-type: inline-size;
  container-name: region;
}

.stacked-panel.scrollable { overflow-y: auto; }

/* === Layout: grid === */
.layout-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-sm, 1rem);
  width: 100%;
  height: 100%;
}

.grid-cell {
  flex: 1;
  display: flex;
  flex-direction: column;
  justify-content: flex-start;
  padding: var(--space-sm, 1rem);
  overflow: hidden;
  container-type: inline-size;
  container-name: region;
}

.grid-cell.scrollable { overflow-y: auto; }

/* === Media === */
.slide-media { margin-top: 1em; }
.slide-media img { max-width: 100%; height: auto; border-radius: 4px; }
/* Mobile default: square aspect for artifacts in split panels */
.artifact-iframe {
  width: 100%;
  max-width: 100%;
  min-width: 0;
  aspect-ratio: 1;
  border: 0;
  display: block;
}

/* Full-layout artifacts fill available slide space on mobile */
.layout-full .slide-media-artifact .artifact-iframe {
  aspect-ratio: auto;
  height: 100%;
}

.slide-media-artifact {
  margin: 0;
  width: 100%;
  display: flex;
  flex: 1 1 auto;
  min-width: 0;
  min-height: 0;
  padding: 0;
}
.csv-table { font-family: var(--font-mono, jetbrains-mono), monospace; font-size: 0.85em; }

.inline-media { margin: 1em 0; }
.inline-media.align-center { text-align: center; }
.inline-media.align-left { text-align: left; }
.inline-media.align-right { text-align: right; }
.inline-media img { max-width: 100%; height: auto; }

/* === Reveal system === */
[data-stagger] {
  opacity: 0;
  transition-property: opacity, transform;
  transition-timing-function: ease-in-out;
}

.slide[data-reveal-type="fade"] [data-stagger] {
  transform: none;
}

.slide[data-reveal-type="slide"] [data-stagger] {
  transform: translateX(2%);
}

.slide[data-reveal-type="rise"] [data-stagger] {
  transform: translateY(12px);
}

.slide [data-stagger].visible {
  opacity: 1;
  transform: none;
}

@media (prefers-reduced-motion: reduce) {
  [data-stagger] {
    opacity: 1 !important;
    transform: none !important;
    transition: none !important;
  }
}

/* === Effects === */
[data-effect~="shimmer"] {
  background: linear-gradient(
    90deg,
    currentColor 0%,
    currentColor 35%,
    var(--effect-shimmer-stripe, currentColor) 50%,
    currentColor 65%,
    currentColor 100%
  );
  background-size: 400% 100%;
  background-position: 100% 0;
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
  padding-bottom: 0.15em;
  animation-name: shimmer-sweep;
  animation-duration: var(--effect-shimmer-duration, 5s);
  animation-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  animation-iteration-count: var(--effect-shimmer-iterations, 1);
  animation-fill-mode: var(--effect-shimmer-fill, forwards);
}

@keyframes shimmer-sweep {
  from { background-position: 100% 0; }
  to   { background-position: 0% 0; }
}

[data-effect~="glow"] { position: relative; }

[data-effect~="glow"]::before {
  content: '';
  position: absolute;
  top: 50%;
  left: 50%;
  width: var(--effect-glow-radius, 120px);
  height: var(--effect-glow-radius, 120px);
  transform: translate(-50%, -50%);
  background: radial-gradient(circle, var(--effect-glow-color, var(--color-label-resolved, #06b6d4)), transparent 70%);
  opacity: var(--effect-glow-opacity, 0.3);
  border-radius: 50%;
  z-index: -1;
  animation: glow-pulse 3s ease-in-out infinite;
}

@keyframes glow-pulse {
  0%, 100% { opacity: var(--effect-glow-opacity, 0.3); transform: translate(-50%, -50%) scale(1); }
  50% { opacity: calc(var(--effect-glow-opacity, 0.3) * 0.6); transform: translate(-50%, -50%) scale(1.1); }
}

[data-effect~="underline"] {
  position: relative;
  padding-bottom: 16px;
}

[data-effect~="underline"]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  width: var(--effect-underline-width, 60px);
  height: var(--effect-underline-height, 3px);
  background: linear-gradient(
    90deg,
    var(--effect-underline-color-0, var(--color-label-resolved, #E91E90)),
    var(--effect-underline-color-1, var(--palette-muted, #999))
  );
  border-radius: 2px;
}

.slide[data-effect~="stripe"]::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: var(--effect-stripe-height, 0);
  background: linear-gradient(
    90deg,
    var(--effect-stripe-color-0, transparent),
    var(--effect-stripe-color-1, transparent)
  );
}

@media (prefers-reduced-motion: reduce) {
  [data-effect~="shimmer"] {
    animation: none;
    background: none;
    -webkit-text-fill-color: currentColor;
    color: currentColor;
  }
  [data-effect~="glow"]::before { animation: none; }
}

/* === Slide counter === */
.slide-counter {
  position: fixed;
  bottom: 1rem;
  right: 1.5rem;
  font-size: 0.75rem;
  opacity: 0.4;
  font-variant-numeric: tabular-nums;
  pointer-events: none;
  z-index: 10;
}

/* === Hamburger === */
.hamburger {
  position: fixed;
  top: 20px;
  left: 20px;
  z-index: 80;
  background: none;
  border: none;
  cursor: pointer;
  padding: 6px;
  color: #999;
  transition: color 0.2s;
}

.hamburger:hover { color: #333; }

.hamburger svg {
  width: 22px;
  height: 16px;
  display: block;
}

/* === Sidebar === */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  bottom: 0;
  width: 300px;
  max-width: 80vw;
  background: var(--color-bg-resolved, #ffffff);
  color: var(--color-text-resolved, #0f0f13);
  box-shadow: 2px 0 12px rgba(0,0,0,0.15);
  z-index: 100;
  transform: translateX(-100%);
  transition: transform 0.25s ease;
  display: flex;
  flex-direction: column;
  padding: 1rem;
}

.sidebar.open { transform: translateX(0); }

.sidebar-backdrop {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.3);
  z-index: 90;
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.25s ease;
}

.sidebar-backdrop.open {
  opacity: 1;
  pointer-events: auto;
}

.sidebar-search {
  width: 100%;
  padding: 0.5rem 0.75rem;
  border: 1px solid rgba(0,0,0,0.15);
  border-radius: 4px;
  font-size: 0.875rem;
  margin-bottom: 0.75rem;
  outline: none;
  font-family: inherit;
}

.sidebar-search:focus { border-color: var(--palette-accent, #0066cc); }

.sidebar-list {
  list-style: none;
  flex: 1;
  overflow-y: auto;
}

.sidebar-list li {
  padding: 0.5rem 0.75rem;
  cursor: pointer;
  border-radius: 4px;
  font-size: 0.875rem;
  display: flex;
  align-items: center;
  gap: 0.5em;
}

.sidebar-list li:hover,
.sidebar-list li.active { background: rgba(0,0,0,0.06); }

.sidebar-list li.current { font-weight: 600; }

.sidebar-list .slide-num {
  font-size: 0.75rem;
  opacity: 0.5;
  min-width: 1.5em;
  font-variant-numeric: tabular-nums;
}

/* === Desktop breakpoint === */
@media (min-width: 768px) {
  .slide { padding: var(--slide-padding, 4rem 6rem); }

  .panel {
    flex: 1;
    padding: var(--slide-padding, 4rem 6rem);
    overflow-y: auto;
  }
  .grid-cell { padding: var(--space-md, 2rem); }

  .slide.slide-split { overflow: hidden; }
  .slide.slide-split-stack { overflow: hidden; }

  .layout-split {
    display: grid;
    grid-template-columns: var(--split-left, 1fr) var(--split-right, 1fr);
    grid-template-rows: 1fr;
    height: 100%;
    position: relative;
  }

  .layout-split.has-header {
    grid-template-rows: auto 1fr;
  }

  .layout-split.has-header > .split-header {
    grid-column: 1 / -1;
    padding: var(--slide-padding, 4rem 6rem);
    padding-bottom: 0;
  }

  .layout-split.has-header > .panel-left { grid-row: 2; grid-column: 1; }
  .layout-split.has-header > .panel-right { grid-row: 2; grid-column: 2; }

  /* --- split-stack desktop --- */
  .layout-split-stack {
    display: grid;
    grid-template-columns: var(--split-left, 1fr) var(--split-right, 1fr);
    grid-template-rows: 1fr;
    height: 100%;
    position: relative;
  }

  .layout-split-stack.has-header {
    grid-template-rows: auto 1fr;
  }

  .layout-split-stack.has-header > .split-stack-header {
    grid-column: 1 / -1;
    padding: var(--slide-padding, 4rem 6rem);
    padding-bottom: 0;
  }

  .layout-split-stack.has-header > .panel-left { grid-row: 2; grid-column: 1; }
  .layout-split-stack.has-header > .panel-right { grid-row: 2; grid-column: 2; }

  .layout-split-stack > .panel-left { grid-column: 1; }
  .layout-split-stack > .panel-right { grid-column: 2; }

  .layout-split-stack > .panel {
    padding: var(--slide-padding, 4rem 6rem);
    overflow-y: auto;
  }

  .layout-split-stack > .panel.panel-stacked {
    display: grid;
    grid-template-columns: minmax(0, 1fr);
    grid-template-rows: repeat(var(--stack-count, 2), 1fr);
    padding: 0;
    overflow: hidden;
  }

  .panel-stacked .stacked-panel {
    padding: var(--space-md, 2rem) var(--space-lg, 4rem);
    overflow-y: auto;
    position: relative;
  }

  .panel-stacked .stacked-panel.scrollable { overflow-y: auto; }

  /* --- Divider desktop positioning --- */
  .divider-v {
    display: block;
    position: absolute;
    top: 0;
    bottom: 0;
    right: 0;
    z-index: 1;
  }

  .divider-h {
    flex-shrink: 0;
  }

  .artifact-iframe {
    height: 100%;
    aspect-ratio: auto;
  }

  .slide-media-artifact {
    height: 100%;
    flex: 1 1 auto;
    min-height: 0;
  }

  .layout-grid {
    display: grid;
    grid-template-columns: repeat(var(--grid-columns, 3), 1fr);
  }
}

/* === Tablet override — tighter padding, no artifact clipping === */
@media (min-width: 768px) and (max-width: 1024px) {
  .slide { padding: var(--slide-padding, 3rem); }
  .panel { padding: var(--slide-padding, 3rem); }
  .layout-split.has-header > .split-header { padding: 3rem; padding-bottom: 0; }
  .artifact-iframe { width: 100%; height: 100%; }
  .layout-split-stack.has-header > .split-stack-header { padding: 3rem; padding-bottom: 0; }
  .layout-split-stack > .panel { padding: 3rem; }
  .panel-stacked .stacked-panel { padding: var(--space-sm, 1rem) var(--space-md, 2rem); }
}