:root {
  /* Main Theme Colors */
  --color-bg-main: #1b214e;
  --color-bg-alt: #232a4d;
  --color-bg-container: #293165;
  --color-bg-translucent: rgba(14, 14, 22, 0.6);
  --color-bg-footer: rgba(34, 37, 60, 0.75);
  --color-bg-footer-catalyst: rgba(34, 37, 60, 0.45);
  --color-bg-footer-border: #fff;

  /* Violet/Purple Accent */
  --color-accent: #6f55b6;
  --color-accent-hover: #825eff;
  --color-accent-border: #5f559a;
  --color-accent-focus: #9e81fa;

  /* Shape/Gradient Colors */
  --color-shape: #323c6f;
  --color-shape2: #3a5580;
  --color-shape-diamond: #fff;
  --color-shape-diamond-alt: #67564c;

  /* Text/Font */
  --color-text: #eeeeee;
  --color-text-muted: #bbb;
  --color-footer-text: #fff;
  --color-label: #ececec;
  --color-h1: #fff;

  /* Misc UI */
  --color-border: #ccc;
  --color-shadow: rgba(0, 0, 0, 0.08);
  --color-shadow-strong: #2e205999;
  --color-modal-bg: rgba(18, 18, 40, 0.85);
  --color-modal-date: #bbe;
  --color-box-shadow: #6f55b6a0;

  /* Tag colors */
  --tag-update: #ff4b4b;
  --tag-version: #2fd46c;
  --tag-beta: #ad7aff;
  --tag-alpha: #49baff;

  /* Misc */
  --radius: 10px;
  --radius-large: 16px;
  --blur-bg: blur(8px);
}

/* ---- footer shell ---- */
.quiz-footer {
  display: flex;
  justify-content: space-between;
  align-items: stretch;
  width: 100%;
  max-width: 100%;
  margin-top: 12px;
  padding: 22px 2vw 14px 2vw;
  box-sizing: border-box;
  gap: 0;

  background: var(--color-bg-footer);
  color: var(--color-footer-text);
  border-top: 2px solid var(--color-bg-footer-border);
  border-radius: 0 0 16px 16px;
  backdrop-filter: blur(8px);
  box-shadow: none;

  position: relative;
  overflow: hidden;
  transition: background 0.3s cubic-bezier(0.57, 0.21, 0.69, 1.25);
}
.quiz-footer.catalyst-footer {
  background: var(--color-bg-footer-catalyst) !important;
}

.footer-col {
  flex: 1 1 0;
  min-width: 120px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: flex-start;
  gap: 14px;
  box-sizing: border-box;
  padding: 0 12px;
  position: relative;
}
.footer-col:not(:last-child)::after {
  content: "";
  position: absolute;
  right: 0;
  top: 0;
  bottom: 0;
  width: 2px;
  background: #fff;
  opacity: 0.17;
  border-radius: 2px;
  pointer-events: none;
  z-index: 1;
}

/* ---- themes section ---- */
.footer-title {
  width: 100%;
  margin: 0;
  text-align: center;
  font-size: 1.18rem;
  font-weight: 700;
  letter-spacing: 0.03em;
  color: #fff;
}
.themes-col {
  flex: 2;
}

.theme-toggles-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 18px 16px;
  margin-top: 10px;
  padding-right: 16px;
  width: 95%;
  justify-items: flex-start;
  max-height: 160px; /* how many rows before scroll */
  overflow-y: auto;
  overflow-x: hidden;

  /* scrollbar settings */
  scrollbar-width: thin;
  scrollbar-color: var(--color-accent) transparent;
}
.theme-toggles-grid::-webkit-scrollbar {
  width: 7px;
  background: transparent !important;
}
.theme-toggles-grid::-webkit-scrollbar-thumb {
  background: var(--color-accent);
  border-radius: 6px;
}

.theme-toggle-label {
  position: relative;
  display: flex;
  align-items: center;
  gap: 12px;
  width: 100%;
  min-width: 110px;
  min-height: 50px;
  padding: 2px 4px;
  cursor: pointer;

  background: #26264b; /* fallback if no image */
  background-size: cover;
  background-position: center;
  border: 2px solid transparent;
  border-radius: 12px;
  box-shadow: 0 2px 10px #2222;
  transition: box-shadow 0.2s, border 0.2s;
}
.theme-toggle-label[data-theme="catalyst"] {
  background-image: url("../images/AstrageldonBackground.png");
}
.theme-toggle-label[data-theme="dark"] {
  background-image: url("../images/DarkTheme.png");
}
.theme-toggle-label[data-theme="light"] {
  background-image: url("../images/LightTheme.png");
}
.theme-toggle-label[data-theme="rain"] {
  background-image: url("../images/Rain.png");
  background-position: 50% calc(50% + 25px);
}

.theme-toggle-label:hover,
.theme-toggle:focus + .toggle-slider {
  border: 2px solid var(--color-accent);
  box-shadow: 0 2px 12px var(--color-accent-hover);
}

.theme-toggle-label .theme-toggle-name {
  position: relative;
  z-index: 1;
  padding: 3px 12px;
  border: 1.5px solid rgba(255, 255, 255, 0.25);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.21);
  backdrop-filter: blur(6px);
  letter-spacing: 0.04em;
  transition: background 0.18s;
}

.theme-toggle {
  width: 0;
  height: 0;
  opacity: 0;
  position: absolute;
}

.toggle-slider {
  display: inline-block;
  width: 40px;
  height: 20px;
  border-radius: 20px;
  background: #4b426a;
  position: relative;
  cursor: pointer;
  transition: background 0.2s;
  box-shadow: 0 1px 4px #2223;
}
.toggle-slider::before {
  content: "";
  position: absolute;
  left: 3px;
  top: 3px;
  width: 14px;
  height: 14px;
  border-radius: 50%;
  background: #f4f4ff;
  box-shadow: 0 2px 5px #2222;
  transition: left 0.22s cubic-bezier(0.37, 1.36, 0.65, 1.03), background 0.18s;
}
.theme-toggle:checked + .toggle-slider {
  background: var(--color-accent);
}
.theme-toggle:checked + .toggle-slider::before {
  left: 23px;
  background: #d5c8ff;
}

/* kill outlines on sliders */
.toggle-slider:focus,
.toggle-slider:active,
.theme-toggle:focus + .toggle-slider,
.theme-toggle:active + .toggle-slider,
.theme-toggle:focus + .toggle-slider::before,
.theme-toggle:active + .toggle-slider::before {
  outline: none !important;
  box-shadow: none !important;
  border: none !important;
}

.theme-toggle-name {
  max-width: 90px;
  font-size: 1rem;
  color: #ececec;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  text-align: left;
}

/* ---- dev notes ---- */
.devnotes-col {
  display: flex;
  flex-direction: column;
  align-items: center;
}
.devnotes-col .footer-title {
  margin: 0;
  text-align: center;
}
.devnotes-col button {
  margin-top: 12px;
  padding: 11px 20px;
  border: none;
  border-radius: 6px;
  font-size: 1.02em;
  font-weight: bold;
  cursor: pointer;
  color: #fff;
  background: linear-gradient(
    90deg,
    var(--color-accent) 60%,
    var(--color-accent-hover) 100%
  );
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.13);
  transition: background 0.18s;
}
.devnotes-col button:hover {
  background: var(--color-accent-hover);
}

/* ---- right column ---- */
.right-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  text-align: center;
  justify-content: flex-start;
}
.footer-icon-link {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 10px 0 4px;
  transition: opacity 0.15s;
}
.footer-icon-link:hover {
  opacity: 0.8;
}
.footer-github-icon {
  width: 64px;
  height: 64px;
  display: block;
  filter: drop-shadow(0 2px 6px #2e205999);
}
.right-col small {
  display: block;
  margin-top: 10px;
  font-size: 0.92em;
  color: #bbb;
}

/* ---- modals ---- */
.modal {
  display: none;
  position: fixed;
  inset: 0;
  z-index: 2001;
  overflow: auto;
  background-color: var(--color-modal-bg);
}
.large-modal-content {
  background: var(--color-bg-alt);
  color: #fff;
  margin: 4% auto;
  padding: 36px 36px 28px;
  border-radius: 20px;
  width: 95%;
  max-width: 700px;
  min-height: 350px;
  box-shadow: 0 4px 32px 0 #111b;

  /* scroll area setup */
  max-height: 85vh;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  align-items: center;
}
.close-modal {
  position: absolute;
  top: 20px;
  right: 22px;
  color: #aaa;
  font-size: 34px;
  font-weight: bold;
  cursor: pointer;
  transition: color 0.2s;
}
.close-modal:hover {
  color: #fff;
}

.modal-title {
  width: 100%;
  margin-bottom: 18px;
  text-align: center;
  font-size: 2.1rem;
  font-weight: 700;
  letter-spacing: 0.04em;
}

.notes-list {
  flex: 1 1 auto;
  min-height: 80px;
  max-height: 52vh;
  padding-right: 8px;
  overflow-y: auto;
  word-break: break-word;

  /* thin translucent scrollbar */
  scrollbar-width: thin;
  scrollbar-color: rgba(174, 174, 255, 0.14) transparent;
}
.notes-list::-webkit-scrollbar {
  width: 7px;
}
.notes-list::-webkit-scrollbar-thumb {
  background: rgba(174, 174, 255, 0.13);
  border-radius: 6px;
}

.notes-date {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;

  margin: 16px 0 4px;
  text-align: center;
  font-family: "Consolas", monospace, monospace;
  font-size: 1.13rem;
  color: #bbe;
  position: relative;
}
.notes-entry {
  margin-bottom: 6px;
  padding-bottom: 7px;
  border-bottom: 1px solid #3a3c5c;
  font-size: 1.05em;
  line-height: 2rem;
}
.dev-note-row {
  position: relative;
}

/* tags row beside date */
.dev-tags {
  display: flex;
  gap: 8px;
  margin-left: 16px;
}
.tag {
  margin-left: 8px;
  padding: 2px 10px;
  border: 2px solid;
  border-radius: 8px;
  background: transparent;
  font-size: 0.88em;
  font-weight: 600;
  text-transform: uppercase;
  letter-spacing: 0.03em;
  user-select: none;
}
.tag-update {
  border-color: #ff4b4b;
  color: #ff4b4b;
}
.tag-version {
  border-color: #2fd46c;
  color: #2fd46c;
}
.tag-beta {
  border-color: #ad7aff;
  color: #ad7aff;
}
.tag-alpha {
  border-color: #49baff;
  color: #49baff;
}
.tag-class {
  border-color: #eebbbb;
  color: #eebbbb;
}

/* ---- Structual Dust ---- */
@media (max-width: 820px) {
  .quiz-footer {
    flex-direction: column;
    gap: 18px;
    padding: 13px 2vw 6px 2vw;
    border-radius: 0 0 12px 12px;
  }
  .footer-col {
    min-width: 0;
    padding: 0 4px;
  }
  .footer-col:not(:last-child)::after {
    display: none;
  }
}
/* ---- Structual Dust ---- */

/* ---- credits section ---- */
.credits-btn {
  display: block;
  margin: 1.7rem auto 0;
  padding: 13px 49px !important;
  border: none;
  border-radius: var(--settings-radius);
  cursor: pointer;
  font-weight: 600;
  color: #fff;
  background: var(--color-accent);
  transition: background 0.2s;
}
.credits-btn:hover {
  background: var(--color-accent-hover);
}

.credits-footer {
  margin-top: 24px;
  padding-top: 13px;
  border-top: 1px solid #393a56;
  text-align: center;
  letter-spacing: 0.04em;
  font-size: 1rem;
  color: #bbe;
}

.credits-divider {
  display: flex;
  align-items: center;
  justify-content: center;
  margin: 25px 0 8px;
  width: 100%;
}
.divider-line {
  flex: 1 1 0;
  height: 1px;
  margin: 0 12px;
  border-bottom: 1.5px solid #393a56;
}
.divider-title {
  flex: 0 0 auto;
  padding: 0 4px;
  white-space: nowrap;
  background: none;
  color: #bbe;
  font-family: "Consolas", monospace, monospace;
  font-size: 1.13rem;
  font-weight: 700;
  letter-spacing: 0.15em;
}

#creditsModal .notes-entry {
  font-size: 1.07em;
  margin-bottom: 12px;
  border: none;
  line-height: 1.8em;
}
#creditsModal .notes-entry a {
  color: var(--color-accent-focus);
  text-decoration: underline dotted;
}

/* ---- version + tooltip ---- */
.version-wrap {
  position: relative;
  display: flex;
  align-items: center;
  justify-content: center;
}
.version-wrap small {
  display: block;
  margin: 0 auto;
}

.info-badge {
  position: absolute;
  right: -1.7em;
  top: 50%;
  transform: translateY(-50%);
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25em;
  height: 1.25em;
  background: rgba(72, 72, 72, 0.9);
  color: #fff;
  font-size: 0.95em;
  font-weight: 700;
  border-radius: 50%;
  cursor: pointer;
  user-select: none;
  outline: none;
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.18);
  transition: background 0.18s;
  z-index: 1;
}
.info-badge:hover,
.info-badge:focus {
  background: rgba(48, 48, 48, 0.9);
}

.info-tooltip {
  visibility: hidden;
  opacity: 0;
  position: absolute;
  bottom: 160%;
  left: 50%;
  transform: translateX(-50%) scale(0.98);
  min-width: 260px;
  max-width: 320px;
  padding: 10px 14px;
  background: #24233c;
  color: #fff;
  border-radius: 9px;
  box-shadow: 0 4px 24px #1119;
  z-index: 1200;
  pointer-events: none;
  line-height: 1.35;
  font-weight: 400;
  letter-spacing: 0.01em;
  font-size: 1em;
  transition: opacity 0.19s cubic-bezier(0.57, 0.21, 0.69, 1.25),
    transform 0.19s;
}

/* let tooltip overflow the column/footer if needed */
.footer-col .right-col {
  overflow: visible !important;
}
.quiz-footer {
  overflow: visible !important;
}

.info-badge:hover .info-tooltip,
.info-badge:focus .info-tooltip {
  visibility: visible;
  opacity: 1;
  transform: translateX(-50%) scale(1);
  pointer-events: auto;
}