/*
 * "Aurora" theme for the Schnuppertag JupyterLite site.
 * Overrides JupyterLab's core CSS variables (not just the rendered lesson
 * text) so the whole app chrome - toolbars, tabs, sidebar, cells - moves
 * away from the stock look, on top of whatever base theme is configured
 * in settings-override.json.
 */

:root {
  --aurora-bg: #14111f;
  --aurora-pink: #ff5d8f;
  --aurora-orange: #ff9d5c;
  --aurora-teal: #2dd4bf;
  --aurora-violet: #a78bfa;
  --aurora-sky: #7dd3fc;
  --aurora-text: #f5f3ff;

  --jp-layout-color0: #14111f !important;
  --jp-layout-color1: #1b1730 !important;
  --jp-layout-color2: #241f3d !important;
  --jp-layout-color3: #2d2650 !important;
  --jp-layout-color4: #362d5e !important;
  --jp-inverse-layout-color0: #f4f1ff !important;
  --jp-inverse-layout-color1: #e8e3ff !important;

  --jp-content-font-color0: var(--aurora-text) !important;
  --jp-content-font-color1: var(--aurora-text) !important;
  --jp-content-font-color2: #cabdf5 !important;
  --jp-content-font-color3: #9c8fc4 !important;
  --jp-ui-font-color0: var(--aurora-text) !important;
  --jp-ui-font-color1: var(--aurora-text) !important;
  --jp-ui-font-color2: #cabdf5 !important;
  --jp-ui-font-color3: #9c8fc4 !important;

  --jp-border-color0: #362d5e !important;
  --jp-border-color1: #362d5e !important;
  --jp-border-color2: #2d2650 !important;
  --jp-border-color3: #241f3d !important;

  --jp-brand-color0: #d6316a !important;
  --jp-brand-color1: var(--aurora-pink) !important;
  --jp-brand-color2: #ff8fb3 !important;
  --jp-brand-color3: #ffc2d6 !important;
  --jp-accent-color0: #0fb59d !important;
  --jp-accent-color1: var(--aurora-teal) !important;
  --jp-accent-color2: #6ee7db !important;
  --jp-accent-color3: #b6f4ec !important;
  --jp-warn-color1: var(--aurora-orange) !important;
  --jp-error-color1: #ff5d5d !important;
  --jp-success-color1: var(--aurora-teal) !important;

  --jp-content-link-color: var(--aurora-sky) !important;
  --jp-cell-editor-background: #1b1730 !important;
  --jp-editor-selected-focused-background: rgba(255, 93, 143, 0.22) !important;
  --jp-toolbar-background: #1b1730 !important;

  --jp-border-radius: 10px;
}

body {
  background: radial-gradient(ellipse 900px 500px at 12% -10%, rgba(255, 93, 143, 0.16), transparent),
    radial-gradient(ellipse 800px 500px at 100% 110%, rgba(45, 212, 191, 0.12), transparent),
    var(--aurora-bg) !important;
}

/* ---------- scrollbars ---------- */
::-webkit-scrollbar {
  width: 11px;
  height: 11px;
}
::-webkit-scrollbar-track {
  background: transparent;
}
::-webkit-scrollbar-thumb {
  background-color: #453b6e;
  border-radius: 999px;
  border: 3px solid transparent;
  background-clip: padding-box;
}
::-webkit-scrollbar-thumb:hover {
  background-color: var(--aurora-pink);
  background-clip: padding-box;
}

/* ---------- top bar branding ---------- */
#jp-top-panel {
  background: linear-gradient(90deg, var(--aurora-pink), var(--aurora-violet), var(--aurora-sky)) !important;
  border-bottom: none !important;
}
#jp-top-panel jp-toolbar,
#jp-top-panel .jp-Toolbar {
  background: linear-gradient(90deg, var(--aurora-pink), var(--aurora-violet), var(--aurora-sky)) !important;
}
#jp-top-panel::after {
  content: "Schnuppertag · Python-Lab";
  position: absolute;
  left: 14px;
  top: 50%;
  transform: translateY(-50%);
  font-size: 13px;
  font-weight: 800;
  letter-spacing: 0.02em;
  color: #14111f;
  pointer-events: none;
  white-space: nowrap;
  z-index: 9999;
}

/* ---------- tabs ---------- */
.lm-TabBar-tab {
  border-top-left-radius: 6px;
  border-top-right-radius: 6px;
}
.lm-TabBar-tab.lm-mod-current {
  border-top: 2px solid var(--aurora-pink) !important;
}

/* ---------- sidebar ---------- */
.jp-SideBar .lm-TabBar-tab.lm-mod-current {
  border-left: 3px solid var(--aurora-pink) !important;
  box-shadow: none !important;
}

/* ---------- launcher background ---------- */
.jp-Launcher {
  background: radial-gradient(ellipse 700px 500px at 90% -10%, rgba(255, 93, 143, 0.12), transparent),
    radial-gradient(ellipse 700px 500px at -10% 110%, rgba(45, 212, 191, 0.1), transparent) !important;
}

/* ---------- readable notebook column ---------- */
.jp-Notebook {
  max-width: 980px;
  margin: 0 auto;
}

/* ---------- cell focus glow ---------- */
.jp-Cell.jp-mod-active .jp-InputArea-editor {
  box-shadow: 0 0 0 1px rgba(255, 93, 143, 0.35), 0 4px 16px rgba(255, 93, 143, 0.08);
}

/* ---------- rendered markdown (lesson text) ---------- */
.jp-RenderedHTMLCommon {
  font-size: 15.5px;
  line-height: 1.75;
}

.jp-RenderedHTMLCommon h1 {
  font-weight: 800;
  font-size: 2em;
  background: linear-gradient(90deg, var(--aurora-pink), var(--aurora-orange));
  -webkit-background-clip: text;
  background-clip: text;
  color: transparent !important;
  padding-bottom: 0.2em;
  margin-bottom: 0.7em;
}

.jp-RenderedHTMLCommon h2 {
  display: inline-block;
  font-weight: 800;
  color: #14111f !important;
  background: linear-gradient(120deg, var(--aurora-teal), var(--aurora-sky));
  padding: 0.3em 1em;
  border-radius: 999px;
  margin-top: 1.8em;
  margin-bottom: 0.7em;
  box-shadow: 0 6px 18px rgba(45, 212, 191, 0.25);
}

.jp-RenderedHTMLCommon h3 {
  font-weight: 800;
  color: var(--aurora-orange) !important;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.95em;
  margin-top: 1.4em;
  border-left: 3px solid var(--aurora-orange);
  padding-left: 0.6em;
}

.jp-RenderedHTMLCommon hr {
  border: none;
  height: 3px;
  margin: 1.8em 0;
  border-radius: 999px;
  background: linear-gradient(90deg, var(--aurora-pink), var(--aurora-violet), var(--aurora-sky), transparent);
}

.jp-RenderedHTMLCommon ul li,
.jp-RenderedHTMLCommon ol li {
  margin: 0.35em 0;
}
.jp-RenderedHTMLCommon ul > li::marker {
  color: var(--aurora-pink);
}

.jp-RenderedHTMLCommon a {
  color: var(--aurora-sky) !important;
  text-decoration: none;
  border-bottom: 1px solid rgba(125, 211, 252, 0.4);
  transition: border-color 0.15s ease, color 0.15s ease;
}
.jp-RenderedHTMLCommon a:hover {
  color: var(--aurora-teal) !important;
  border-bottom-color: var(--aurora-teal);
}

.jp-RenderedHTMLCommon code {
  background: rgba(255, 93, 143, 0.14);
  border: 1px solid rgba(255, 93, 143, 0.3);
  border-radius: 5px;
  padding: 0.1em 0.4em;
  color: #ffc2d6;
}

.jp-RenderedHTMLCommon pre {
  background: #100d1c !important;
  border: 1px solid var(--jp-border-color1);
  border-left: 3px solid var(--aurora-violet);
  border-radius: 10px;
  padding: 0.9em 1.1em;
  box-shadow: 0 6px 20px rgba(0, 0, 0, 0.35);
}
.jp-RenderedHTMLCommon pre code {
  background: transparent;
  border: none;
  padding: 0;
  color: inherit;
}

.jp-RenderedHTMLCommon img {
  border-radius: 12px;
  border: 1px solid rgba(255, 255, 255, 0.08);
  box-shadow: 0 10px 26px rgba(0, 0, 0, 0.4);
  margin: 0.6em 0;
}

/* ---------- launcher ---------- */
.jp-Launcher .jp-Launcher-sectionTitle {
  color: var(--aurora-sky) !important;
  letter-spacing: 0.03em;
  text-transform: uppercase;
  font-size: 0.85em;
}

.jp-LauncherCard {
  border-radius: 12px;
  transition: transform 0.15s ease, box-shadow 0.15s ease, border-color 0.15s ease;
  border: 1px solid var(--jp-border-color1);
}
.jp-LauncherCard:hover {
  transform: translateY(-4px);
  box-shadow: 0 14px 28px rgba(0, 0, 0, 0.4);
  border-color: var(--aurora-pink);
}

/* ---------- file browser: colorful lesson list ---------- */
.jp-DirListing-item {
  border-radius: 8px;
  border-left: 3px solid transparent;
  transition: background-color 0.12s ease, border-color 0.12s ease;
}
.jp-DirListing-item:nth-of-type(5n + 1) { border-left-color: var(--aurora-pink); }
.jp-DirListing-item:nth-of-type(5n + 2) { border-left-color: var(--aurora-orange); }
.jp-DirListing-item:nth-of-type(5n + 3) { border-left-color: var(--aurora-teal); }
.jp-DirListing-item:nth-of-type(5n + 4) { border-left-color: var(--aurora-sky); }
.jp-DirListing-item:nth-of-type(5n + 5) { border-left-color: var(--aurora-violet); }
.jp-DirListing-item.jp-mod-selected {
  background: rgba(255, 93, 143, 0.18) !important;
}

/* ---------- notebook cells ---------- */
.jp-Cell {
  border-radius: 10px;
}
.jp-Notebook .jp-Cell.jp-mod-active .jp-InputPrompt,
.jp-Notebook .jp-Cell.jp-mod-active .jp-OutputPrompt {
  color: var(--aurora-pink);
}
.jp-Notebook .jp-Cell.jp-mod-active .jp-InputArea-editor {
  border-left: 3px solid var(--aurora-pink);
}

/* ---------- reset button (injected by patch.js) ---------- */
#schnuppertag-reset-btn {
  position: fixed;
  top: 3px;
  right: 12px;
  z-index: 100000;
  border: none;
  cursor: pointer;
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 0.02em;
  color: #14111f;
  background: rgba(20, 17, 31, 0.16);
  padding: 0.3em 0.8em;
  border-radius: 999px;
  transition: background-color 0.15s ease, transform 0.15s ease;
}
#schnuppertag-reset-btn:hover {
  background: rgba(20, 17, 31, 0.32);
  transform: translateY(1px);
}

/* ---------- welcome splash (injected by patch.js) ---------- */
#schnuppertag-welcome {
  position: fixed;
  inset: 0;
  z-index: 100000;
  display: flex;
  align-items: center;
  justify-content: center;
  background: radial-gradient(ellipse 900px 600px at 20% 0%, rgba(255, 93, 143, 0.25), transparent),
    radial-gradient(ellipse 800px 600px at 90% 100%, rgba(45, 212, 191, 0.2), transparent),
    var(--aurora-bg);
  opacity: 1;
  transition: opacity 0.4s ease;
}
#schnuppertag-welcome.schnuppertag-welcome-hide {
  opacity: 0;
}
.schnuppertag-welcome-card {
  max-width: 480px;
  margin: 0 24px;
  padding: 2.5em 2.4em;
  border-radius: 20px;
  background: #1b1730;
  border: 1px solid #362d5e;
  box-shadow: 0 24px 60px rgba(0, 0, 0, 0.5);
  text-align: center;
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", helvetica, arial, sans-serif;
}
.schnuppertag-welcome-badge {
  display: inline-block;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: #14111f;
  background: linear-gradient(90deg, var(--aurora-pink), var(--aurora-orange));
  padding: 0.4em 1em;
  border-radius: 999px;
  margin-bottom: 1.1em;
}
.schnuppertag-welcome-card h1 {
  font-size: 1.6em;
  font-weight: 800;
  color: var(--aurora-text);
  margin: 0 0 0.5em;
  line-height: 1.3;
}
.schnuppertag-welcome-card p {
  color: #cabdf5;
  font-size: 0.95em;
  line-height: 1.6;
  margin: 0 0 1.6em;
}
.schnuppertag-welcome-card button {
  border: none;
  cursor: pointer;
  font-size: 0.95em;
  font-weight: 700;
  color: #14111f;
  background: linear-gradient(90deg, var(--aurora-teal), var(--aurora-sky));
  padding: 0.7em 1.8em;
  border-radius: 999px;
  transition: transform 0.15s ease, box-shadow 0.15s ease;
  box-shadow: 0 8px 20px rgba(45, 212, 191, 0.3);
}
.schnuppertag-welcome-card button:hover {
  transform: translateY(-2px);
  box-shadow: 0 12px 26px rgba(45, 212, 191, 0.4);
}
.schnuppertag-welcome-kernel {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5em;
  margin-top: 1.6em;
  font-size: 0.78em;
  color: #9c8fc4;
}
.schnuppertag-welcome-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: var(--aurora-teal);
  flex-shrink: 0;
  animation: schnuppertag-pulse 1.4s ease-in-out infinite;
}
@keyframes schnuppertag-pulse {
  0%, 100% { opacity: 0.3; transform: scale(0.85); }
  50% { opacity: 1; transform: scale(1); }
}
@media (prefers-reduced-motion: reduce) {
  .schnuppertag-welcome-dot {
    animation: none;
    opacity: 1;
  }
}