/* =====================================================
   GenQ Modern CSS
   A sleek, glassmorphic design system
   ===================================================== */

/* ----- CSS Custom Properties (Theming) ----- */
:root {
  /* Colors - Light Theme (default) */
  --bg-gradient-start: #0d9488;
  --bg-gradient-end: #0891b2;
  --bg-solid: #14b8a6;

  --glass-bg: rgba(0, 0, 0, 0.4);
  --glass-bg-hover: rgba(0, 0, 0, 0.5);
  --glass-border: rgba(255, 255, 255, 0.1);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.3);

  --text-primary: #ffffff;
  --text-secondary: rgba(255, 255, 255, 0.7);
  --text-muted: rgba(255, 255, 255, 0.5);

  --accent: #a855f7;
  --accent-glow: rgba(168, 85, 247, 0.5);
  --accent-secondary: #6366f1;

  --input-bg: rgba(255, 255, 255, 0.1);
  --input-border: rgba(255, 255, 255, 0.2);
  --input-focus: rgba(168, 85, 247, 0.5);

  --chip-bg: rgba(255, 255, 255, 0.15);
  --chip-selected: var(--accent);

  --result-bg: rgba(0, 0, 0, 0.5);

  --footer-text: rgba(255, 255, 255, 0.6);
  --footer-hover: #ffffff;

  /* Spacing */
  --space-xs: 0.25rem;
  --space-sm: 0.5rem;
  --space-md: 1rem;
  --space-lg: 1.5rem;
  --space-xl: 2rem;
  --space-2xl: 3rem;

  /* Border Radius */
  --radius-sm: 0.5rem;
  --radius-md: 1rem;
  --radius-lg: 1.5rem;
  --radius-full: 9999px;

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-base: 250ms ease;
  --transition-slow: 400ms ease;
  --transition-long: 1s    ease;

  /* Typography */
  --font-sans: 'Inter', system-ui, -apple-system, BlinkMacSystemFont, 'Segoe UI', sans-serif;
  --font-mono: 'JetBrains Mono', 'Fira Code', 'Anonymous Pro', monospace;
}

/* Dark Theme */
.dark {
  --bg-gradient-start: #030712;
  --bg-gradient-end: #0f172a;
  --bg-solid: #000000;

  --glass-bg: rgba(255, 255, 255, 0.03);
  --glass-bg-hover: rgba(255, 255, 255, 0.06);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-shadow: 0 8px 32px rgba(0, 0, 0, 0.5);

  --accent: #818cf8;
  --accent-glow: rgba(129, 140, 248, 0.4);
  --accent-secondary: #a855f7;

  --footer-text: rgba(255, 255, 255, 0.4);
}

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

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-sans);
  font-size: 1rem;
  line-height: 1.6;
  color: var(--text-primary);
  min-height: 100vh;
  min-height: 100dvh;
  overflow-x: hidden;
}

/* ----- Particles Background ----- */
#particles-js {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  z-index: 0;
  background: linear-gradient(135deg, var(--bg-gradient-start), var(--bg-gradient-end));
  transition: background var(--transition-slow);
}

#particles-js.fullscreen {
  z-index: 100;
}

#particles-js canvas {
  display: block;
}

/* ----- Content Wrapper ----- */
#content-wrapper {
  position: relative;
  z-index: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  min-height: 100vh;
  min-height: 100dvh;
  padding: var(--space-lg);
}

/* ----- Main Card (Glassmorphism) ----- */
main.card {
  width: 100%;
  max-width: 500px;
  background: var(--glass-bg);
  backdrop-filter: blur(16px);
  -webkit-backdrop-filter: blur(16px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  padding: var(--space-lg);
  opacity: 0;
  /* transform: translateY(10px); */
  transition:
    background var(--transition-base),
    border var(--transition-base),
    opacity var(--transition-long);
}

main.card.ready {
  opacity: 1;
}

/* ----- Tabs ----- */
.tabs {
  display: flex;
  justify-content: center;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  border-bottom: 1px solid var(--glass-border);
  padding-bottom: var(--space-sm);
  overflow-x: auto;
  scroll-snap-type: x mandatory;
  scrollbar-width: none;
  -ms-overflow-style: none;
  width: fit-content;
  max-width: 100%;
  margin-inline: auto;
}

.tabs::-webkit-scrollbar {
  display: none;
}

.tab {
  flex: 0 0 auto;
  min-width: 80px;
  padding: var(--space-sm) var(--space-md);
  background: transparent;
  border: none;
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
  scroll-snap-align: center;
  white-space: nowrap;
}

.tab:hover {
  color: var(--text-primary);
  background: rgba(255, 255, 255, 0.05);
}

.tab.active {
  color: var(--text-primary);
}

.tab.active::after {
  content: '';
  position: absolute;
  bottom: calc(-1 * var(--space-sm) - 1px);
  left: 50%;
  transform: translateX(-50%);
  width: 60%;
  height: 2px;
  background: linear-gradient(90deg, var(--accent), var(--accent-secondary));
  border-radius: var(--radius-full);
}

/* ----- Tab Panels (Swipeable) ----- */
.tab-panels {
  display: flex;
  overflow-x: auto;
  overflow-y: hidden;
  scroll-snap-type: x mandatory;
  scroll-behavior: smooth;
  scrollbar-width: none;
  -ms-overflow-style: none;
  -webkit-overflow-scrolling: touch;
}

.tab-panels::-webkit-scrollbar {
  display: none;
}

.tab-panel {
  flex: 0 0 100%;
  width: 100%;
  scroll-snap-align: start;
  scroll-snap-stop: always;
  padding: 0 var(--space-xl);
  box-sizing: border-box;
}

/* ----- Form Elements ----- */
.form-group {
  margin-bottom: var(--space-md);
}

.form-row {
  display: flex;
  gap: var(--space-md);
}

.form-row .form-group {
  flex: 1;
}

label {
  display: block;
  margin-bottom: var(--space-xs);
  font-size: 0.85rem;
  font-weight: 500;
  color: var(--text-secondary);
}

input[type="text"],
input[type="number"] {
  width: 100%;
  padding: var(--space-sm) var(--space-md);
  background: var(--input-bg);
  border: 1px solid var(--input-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 1rem;
  transition: all var(--transition-fast);
  outline: none;
}

input[type="text"]:focus,
input[type="number"]:focus {
  border-color: var(--accent);
  box-shadow: 0 0 0 3px var(--input-focus);
}

input[type="text"]::placeholder,
input[type="number"]::placeholder {
  color: var(--text-muted);
}

/* Remove number input spinners */
input[type="number"]::-webkit-inner-spin-button,
input[type="number"]::-webkit-outer-spin-button {
  -webkit-appearance: none;
  margin: 0;
}
input[type="number"] {
  -moz-appearance: textfield;
}

/* ----- Buttons ----- */
.btn-group {
  display: flex;
  gap: var(--space-sm);
  justify-content: center;
  flex-wrap: wrap;
  margin: var(--space-md) 0;
}

.btn {
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 0.9rem;
  font-weight: 500;
  cursor: pointer;
  transition: all var(--transition-fast);
  outline: none;
}

.btn:active:not(:disabled) {
  transform: scale(0.98);
}

/* Primary button with glow */
.btn-primary {
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  border: none;
  box-shadow: 0 4px 15px var(--accent-glow);
}

.btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
  filter: grayscale(0.5);
}

/* Hover effects only on devices with real hover (not touch) */
@media (hover: hover) and (pointer: fine) {
  .btn:hover:not(:disabled) {
    background: var(--glass-bg-hover);
    transform: translateY(-1px);
  }

  .btn-primary:hover:not(:disabled) {
    box-shadow: 0 6px 20px var(--accent-glow);
    filter: brightness(1.1);
  }
}

/* ----- Result Display ----- */
.result-container {
  text-align: center;
  margin: var(--space-lg) 0;
}

.result {
  display: inline-block;
  min-width: 80px;
  padding: var(--space-sm) var(--space-lg);
  background: var(--result-bg);
  border-radius: var(--radius-sm);
  font-size: 1.75rem;
  font-weight: 600;
  letter-spacing: 0.02em;
  box-shadow: inset 0 2px 4px rgba(0, 0, 0, 0.2);
}

/* 8-Ball specific styling */
#eight-ball-result {
  font-family: var(--font-mono);
  text-shadow:
    0 0 10px var(--accent-glow),
    0 0 20px var(--accent-glow),
    0 0 40px var(--accent-glow);
  color: var(--accent);
}

/* ----- Chips (for choices) ----- */
.chips-container {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  min-height: 40px;
  padding: var(--space-sm);
  margin-top: var(--space-md);
}

.chip {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-sm) var(--space-md);
  background: var(--chip-bg);
  border-radius: var(--radius-full);
  font-size: 1em;
  transition: all var(--transition-fast);
}

.chip.selected {
  background: var(--chip-selected);
  box-shadow: 0 0 15px var(--accent-glow);
  transform: scale(1.05);
}

.chip-close {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 18px;
  height: 18px;
  background: rgba(255, 255, 255, 0.2);
  border: none;
  border-radius: 50%;
  color: var(--text-primary);
  font-size: 12px;
  line-height: 1;
  cursor: pointer;
  transition: background var(--transition-fast);
  padding: 0;
}

.chip-close:hover {
  background: rgba(255, 255, 255, 0.4);
}

/* ----- Modal (using native dialog) ----- */
dialog {
  position: fixed;
  top: 50%;
  left: 50%;
  transform: translate(-50%, -50%);
  max-width: 90vw;
  width: 500px;
  max-height: 85vh;
  padding: 0;
  background: var(--glass-bg);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--glass-shadow);
  color: var(--text-primary);
  overflow: hidden;
}

dialog::backdrop {
  background: rgba(0, 0, 0, 0.6);
  backdrop-filter: blur(4px);
}

dialog[open] {
  animation: dialogIn var(--transition-base);
}

@keyframes dialogIn {
  from {
    opacity: 0;
    transform: translate(-50%, -50%) scale(0.95);
  }
  to {
    opacity: 1;
    transform: translate(-50%, -50%) scale(1);
  }
}

.modal-content {
  padding: var(--space-xl);
  overflow-y: auto;
  max-height: calc(85vh - 60px);
}

.modal-content h2 {
  font-size: 1.5rem;
  font-weight: 600;
  margin-bottom: var(--space-md);
  background: linear-gradient(135deg, var(--accent), var(--accent-secondary));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.modal-content h3 {
  font-size: 1.1rem;
  font-weight: 600;
  margin: var(--space-lg) 0 var(--space-sm);
  color: var(--text-primary);
}

.modal-content p {
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
  line-height: 1.7;
}

.modal-content a {
  color: var(--accent);
  text-decoration: none;
  transition: opacity var(--transition-fast);
}

.modal-content a:hover {
  opacity: 0.8;
  text-decoration: underline;
}

.modal-footer {
  display: flex;
  justify-content: flex-end;
  padding: var(--space-md) var(--space-xl);
  border-top: 1px solid var(--glass-border);
}

/* ----- Toast Notifications ----- */
.toast-container {
  position: fixed;
  bottom: var(--space-xl);
  left: 50%;
  transform: translateX(-50%);
  z-index: 200;
  display: flex;
  flex-direction: column;
  gap: var(--space-sm);
}

.toast {
  padding: var(--space-sm) var(--space-lg);
  background: var(--glass-bg);
  backdrop-filter: blur(12px);
  border: 1px solid var(--glass-border);
  border-radius: var(--radius-sm);
  font-size: 0.9rem;
  box-shadow: var(--glass-shadow);
  animation: toastIn var(--transition-base);
}

.toast.fade-out {
  animation: toastOut var(--transition-base) forwards;
}

@keyframes toastIn {
  from {
    opacity: 0;
    transform: translateY(20px);
  }
  to {
    opacity: 1;
    transform: translateY(0);
  }
}

@keyframes toastOut {
  from {
    opacity: 1;
    transform: translateY(0);
  }
  to {
    opacity: 0;
    transform: translateY(-20px);
  }
}

/* ----- Footer ----- */
footer {
  position: fixed;
  bottom: 0;
  right: 0;
  padding: var(--space-md);
  font-size: 0.9rem;
  z-index: 50;
}

footer a {
  color: var(--footer-text);
  text-decoration: none;
  transition: color var(--transition-fast);
  margin: 0 var(--space-xs);
}

footer a:hover {
  color: var(--footer-hover);
}

footer .separator {
  color: var(--footer-text);
  opacity: 0.5;
}

/* ----- Utility Classes ----- */
.text-center {
  text-align: center;
}

.visually-hidden {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

/* ----- Responsive ----- */
@media (max-width: 600px) {
  :root {
    font-size: 14px;
  }

  #content-wrapper {
    padding: var(--space-md);
  }

  main.card {
    padding: var(--space-md);
  }

  .tabs {
    gap: 0;
  }

  .tab {
    padding: var(--space-sm);
    font-size: 0.85rem;
  }

  .form-row {
    flex-direction: column;
    gap: 0;
  }

  /* Choices panel: reorder so chips appear under input, before buttons */
  #rcg-form {
    display: flex;
    flex-direction: column;
  }

  #rcg-form .form-group {
    order: 1;
  }

  #rcg-form .chips-container {
    order: 2;
    margin-top: var(--space-sm);
    margin-bottom: var(--space-md);
    max-height: 120px;
    overflow-y: auto;
  }

  #rcg-form .btn-group {
    order: 3;
    flex-direction: row;
    flex-wrap: wrap;
  }

  #rcg-form .btn-group .btn {
    flex: 1;
    min-width: auto;
  }
}

/* ----- Compass ----- */
.compass-container {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-md);
}

.compass {
  width: 180px;
  height: 180px;
  color: var(--text-primary);
}

.compass-needle {
  transform-origin: 100px 100px;
  transition: transform 3s cubic-bezier(0.2, 0.8, 0.3, 1);
}

.compass-needle.spinning {
  transition: transform 3s cubic-bezier(0.1, 0.7, 0.3, 1);
}

.compass-degrees {
  font-family: var(--font-mono);
  font-size: 1.5rem;
  font-weight: 500;
  color: var(--accent);
  text-shadow: 0 0 10px var(--accent-glow);
}

/* ----- Loading State ----- */
.loading {
  position: relative;
  pointer-events: none;
}

.loading::after {
  content: '';
  position: absolute;
  inset: 0;
  background: var(--glass-bg);
  border-radius: inherit;
  display: flex;
  align-items: center;
  justify-content: center;
}