/* =========================================
   Book Report Quest - Vanilla CSS
   TailwindCSS から完全移行
   ========================================= */

/* -----------------------------------------
   Table of Contents
   -----------------------------------------
   1. CSS Custom Properties (Design Tokens)
   2. Reset & Base Styles
   3. Typography
   4. Layout & Grid
   5. Width & Height
   6. Positioning
   7. Transform
   8. Spacing
   9. Backgrounds
   10. Borders
   11. Effects & Shadows
   12. Components (Chips, Cards, etc.)
   13. Utilities (Animations, etc.)
   ----------------------------------------- */

/* -----------------------------------------
   1. CSS Custom Properties (Design Tokens)
   ----------------------------------------- */
:root {
  /* ... (color variables unchanged) */
  /* Adventure Color Palette */
  --color-adventure-sky: #4FC3F7;
  --color-adventure-sun: #FFEB3B;
  --color-adventure-sand: #FFF9C4;
  --color-adventure-ocean: #0288D1;
  --color-adventure-ocean-dark: #0277BD;
  --color-adventure-grass: #8BC34A;
  --color-adventure-wood: #8D6E63;
  --color-adventure-paper: #FFFDE7;

  /* Neutral Colors */
  --color-white: #ffffff;
  --color-gray-50: #f9fafb;
  --color-gray-100: #f3f4f6;
  --color-gray-200: #e5e7eb;
  --color-gray-300: #d1d5db;
  --color-gray-400: #9ca3af;
  --color-gray-500: #6b7280;
  --color-gray-600: #4b5563;
  --color-gray-700: #374151;
  --color-gray-800: #1f2937;

  /* Semantic Colors */
  --color-error: #FF5252;
  --color-error-dark: #D32F2F;
  --color-success: #4CAF50;
  --color-warning: #FF9800;
  --color-orange-300: #FFCC80;
  --color-orange-400: #FFA726;

  /* Background */
  --bg-primary: #E1F5FE;
  --bg-blue-50: #EFF6FF;
  --bg-yellow-50: #FFFBEB;
  --bg-orange-50: #FFF7ED;

  /* Typography */
  --font-family: "M PLUS Rounded 1c", sans-serif;
  --font-size-xs: 0.75rem;
  --font-size-sm: 0.875rem;
  --font-size-base: 1rem;
  --font-size-lg: 1.125rem;
  --font-size-xl: 1.25rem;
  --font-size-2xl: 1.5rem;
  --font-size-3xl: 1.875rem;
  --font-size-4xl: 2.25rem;
  --font-size-5xl: 3rem;

  /* Spacing */
  --spacing-1: 0.25rem;
  --spacing-2: 0.5rem;
  --spacing-3: 0.75rem;
  --spacing-4: 1rem;
  --spacing-5: 1.25rem;
  --spacing-6: 1.5rem;
  --spacing-8: 2rem;
  --spacing-10: 2.5rem;
  --spacing-12: 3rem;
  --spacing-20: 5rem;

  /* Border Radius */
  --radius-sm: 0.25rem;
  --radius-md: 0.375rem;
  --radius-lg: 0.5rem;
  --radius-xl: 0.75rem;
  --radius-2xl: 1rem;
  --radius-3xl: 1.5rem;
  --radius-full: 9999px;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgb(0 0 0 / 0.05);
  --shadow-md: 0 4px 6px -1px rgb(0 0 0 / 0.1);
  --shadow-lg: 0 10px 15px -3px rgb(0 0 0 / 0.1);
  --shadow-xl: 0 20px 25px -5px rgb(0 0 0 / 0.1);

  /* Transitions */
  --transition-fast: 0.15s ease;
  --transition-normal: 0.2s ease;
  --transition-slow: 0.3s ease;
  --transition-duration: 500ms;
}

/* -----------------------------------------
   2. Reset & Base Styles
   ----------------------------------------- */
*,
*::before,
*::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

body {
  font-family: var(--font-family);
  color: var(--color-gray-700);
  min-height: 100vh;
  padding-bottom: var(--spacing-20);
  overflow-x: hidden;
  background-color: var(--bg-primary);
  background-image:
    radial-gradient(var(--color-adventure-sky) 1px, transparent 1px),
    radial-gradient(var(--color-adventure-sky) 1px, transparent 1px);
  background-size: 20px 20px;
  background-position: 0 0, 10px 10px;
  line-height: 1.5;
}

/* -----------------------------------------
   3. Typography
   ----------------------------------------- */
.text-xs {
  font-size: var(--font-size-xs);
}

.text-sm {
  font-size: var(--font-size-sm);
}

.text-base {
  font-size: var(--font-size-base);
}

.text-lg {
  font-size: var(--font-size-lg);
}

.text-xl {
  font-size: var(--font-size-xl);
}

.text-2xl {
  font-size: var(--font-size-2xl);
}

.text-3xl {
  font-size: var(--font-size-3xl);
}

.text-4xl {
  font-size: var(--font-size-4xl);
}

.text-5xl {
  font-size: var(--font-size-5xl);
}

.font-bold {
  font-weight: 700;
}

.font-extrabold {
  font-weight: 800;
}

.font-black {
  font-weight: 900;
}

.text-center {
  text-align: center;
}

.text-right {
  text-align: right;
}

.tracking-tight {
  letter-spacing: -0.025em;
}

/* Text Colors */
.text-white {
  color: var(--color-white);
}

.text-gray-400 {
  color: var(--color-gray-400);
}

.text-gray-500 {
  color: var(--color-gray-500);
}

.text-gray-600 {
  color: var(--color-gray-600);
}

.text-gray-700 {
  color: var(--color-gray-700);
}

.text-gray-800 {
  color: var(--color-gray-800);
}

.text-adventure-sky {
  color: var(--color-adventure-sky);
}

.text-adventure-sun {
  color: var(--color-adventure-sun);
}

.text-adventure-ocean {
  color: var(--color-adventure-ocean);
}

.text-adventure-wood {
  color: var(--color-adventure-wood);
}

.text-orange-300 {
  color: var(--color-orange-300);
}

.drop-shadow-sm {
  filter: drop-shadow(0 1px 1px rgb(0 0 0 / 0.05));
}

.drop-shadow-md {
  filter: drop-shadow(0 4px 3px rgb(0 0 0 / 0.07));
}

/* -----------------------------------------
   4. Layout & Grid
   ----------------------------------------- */
.flex {
  display: flex;
}

.inline-flex {
  display: inline-flex;
}

.grid {
  display: grid;
}

.hidden {
  display: none;
}

.block {
  display: block;
}

.inline-block {
  display: inline-block;
}

.flex-col {
  flex-direction: column;
}

.flex-wrap {
  flex-wrap: wrap;
}

.items-center {
  align-items: center;
}

.justify-center {
  justify-content: center;
}

.justify-between {
  justify-content: space-between;
}

.justify-end {
  justify-content: flex-end;
}

.gap-2 {
  gap: var(--spacing-2);
}

.gap-3 {
  gap: var(--spacing-3);
}

.gap-4 {
  gap: var(--spacing-4);
}

.gap-6 {
  gap: var(--spacing-6);
}

.space-y-4>*+* {
  margin-top: var(--spacing-4);
}

.space-y-6>*+* {
  margin-top: var(--spacing-6);
}

.space-y-10>*+* {
  margin-top: var(--spacing-10);
}

/* Grid */
.grid-cols-1 {
  grid-template-columns: repeat(1, minmax(0, 1fr));
}

/* Width & Height */
.w-full {
  width: 100%;
}

.w-5 {
  width: 1.25rem;
}

.w-10 {
  width: 2.5rem;
}

.w-12 {
  width: 3rem;
}

.h-full {
  height: 100%;
}

.h-4 {
  height: 1rem;
}

.h-5 {
  height: 1.25rem;
}

.h-10 {
  height: 2.5rem;
}

.h-12 {
  height: 3rem;
}

.min-h-screen {
  min-height: 100vh;
}

.max-w-2xl {
  max-width: 42rem;
}

.max-w-3xl {
  max-width: 48rem;
}

.max-w-4xl {
  max-width: 56rem;
}

.max-h-90vh {
  max-height: 90vh;
}

/* Positioning */
.relative {
  position: relative;
}

.absolute {
  position: absolute;
}

.fixed {
  position: fixed;
}

.inset-0 {
  inset: 0;
}

.top-0 {
  top: 0;
}

.top-2 {
  top: var(--spacing-2);
}

.top-4 {
  top: var(--spacing-4);
}

.top-10 {
  top: var(--spacing-10);
}

.top-20 {
  top: var(--spacing-20);
}

.right-0 {
  right: 0;
}

.right-2 {
  right: var(--spacing-2);
}

.right-4 {
  right: var(--spacing-4);
}

.right-10 {
  right: var(--spacing-10);
}

.left-0 {
  left: 0;
}

.left-10 {
  left: var(--spacing-10);
}

.left-50 {
  left: 50%;
}

.bottom-20 {
  bottom: var(--spacing-20);
}

.z-10 {
  z-index: 10;
}

.z-40 {
  z-index: 40;
}

.z-50 {
  z-index: 50;
}

.z-100 {
  z-index: 100;
}

/* Transform */
.transform {
  transform: translateX(var(--tw-translate-x, 0)) translateY(var(--tw-translate-y, 0)) rotate(var(--tw-rotate, 0)) scale(var(--tw-scale, 1));
}

.translate-x-half {
  transform: translateX(50%);
}

.translate-x-neg-half {
  transform: translateX(-50%);
}

.translate-y-neg-half {
  transform: translateY(-50%);
}

.rotate-3 {
  transform: rotate(3deg);
}

.rotate-neg-3 {
  transform: rotate(-3deg);
}

.rotate-12 {
  transform: rotate(12deg);
}

.rotate-180 {
  transform: rotate(180deg);
}

.scale-95 {
  transform: scale(0.95);
}

.scale-100 {
  transform: scale(1);
}

/* -----------------------------------------
   Spacing
   ----------------------------------------- */
.p-1 {
  padding: var(--spacing-1);
}

.p-2 {
  padding: var(--spacing-2);
}

.p-3 {
  padding: var(--spacing-3);
}

.p-4 {
  padding: var(--spacing-4);
}

.p-6 {
  padding: var(--spacing-6);
}

.p-8 {
  padding: var(--spacing-8);
}

.p-10 {
  padding: var(--spacing-10);
}

.px-2 {
  padding-left: var(--spacing-2);
  padding-right: var(--spacing-2);
}

.px-4 {
  padding-left: var(--spacing-4);
  padding-right: var(--spacing-4);
}

.px-6 {
  padding-left: var(--spacing-6);
  padding-right: var(--spacing-6);
}

.px-10 {
  padding-left: var(--spacing-10);
  padding-right: var(--spacing-10);
}

.py-2 {
  padding-top: var(--spacing-2);
  padding-bottom: var(--spacing-2);
}

.py-3 {
  padding-top: var(--spacing-3);
  padding-bottom: var(--spacing-3);
}

.py-4 {
  padding-top: var(--spacing-4);
  padding-bottom: var(--spacing-4);
}

.py-6 {
  padding-top: var(--spacing-6);
  padding-bottom: var(--spacing-6);
}

.pt-6 {
  padding-top: var(--spacing-6);
}

.pt-8 {
  padding-top: var(--spacing-8);
}

.pb-12 {
  padding-bottom: var(--spacing-12);
}

.pb-20 {
  padding-bottom: var(--spacing-20);
}

.pl-5 {
  padding-left: var(--spacing-5);
}

.pl-6 {
  padding-left: var(--spacing-6);
}

.m-4 {
  margin: var(--spacing-4);
}

.mx-auto {
  margin-left: auto;
  margin-right: auto;
}

.mb-1 {
  margin-bottom: var(--spacing-1);
}

.mb-2 {
  margin-bottom: var(--spacing-2);
}

.mb-4 {
  margin-bottom: var(--spacing-4);
}

.mb-6 {
  margin-bottom: var(--spacing-6);
}

.mb-8 {
  margin-bottom: var(--spacing-8);
}

.mt-1 {
  margin-top: var(--spacing-1);
}

.mt-2 {
  margin-top: var(--spacing-2);
}

.mt-3 {
  margin-top: var(--spacing-3);
}

.mt-6 {
  margin-top: var(--spacing-6);
}

.mt-8 {
  margin-top: var(--spacing-8);
}

.mt-10 {
  margin-top: var(--spacing-10);
}

.mr-1 {
  margin-right: var(--spacing-1);
}

.mr-2 {
  margin-right: var(--spacing-2);
}

/* -----------------------------------------
   Backgrounds
   ----------------------------------------- */
.bg-white {
  background-color: var(--color-white);
}

.bg-white-80 {
  background-color: rgba(255, 255, 255, 0.8);
}

.bg-white-60 {
  background-color: rgba(255, 255, 255, 0.6);
}

.bg-white-90 {
  background-color: rgba(255, 255, 255, 0.9);
}

.bg-gray-50 {
  background-color: var(--color-gray-50);
}

.bg-gray-100 {
  background-color: var(--color-gray-100);
}

.bg-gray-200 {
  background-color: var(--color-gray-200);
}

.bg-blue-50 {
  background-color: var(--bg-blue-50);
}

.bg-yellow-50 {
  background-color: var(--bg-yellow-50);
}

.bg-orange-50 {
  background-color: var(--bg-orange-50);
}

.bg-adventure-sky {
  background-color: var(--color-adventure-sky);
}

.bg-adventure-sun {
  background-color: var(--color-adventure-sun);
}

.bg-adventure-paper {
  background-color: var(--color-adventure-paper);
}

.bg-adventure-ocean {
  background-color: var(--color-adventure-ocean);
}

.bg-adventure-sky-10 {
  background-color: rgba(79, 195, 247, 0.1);
}

.bg-gradient-sky-ocean {
  background: linear-gradient(to right, var(--color-adventure-sky), var(--color-adventure-ocean));
}

.bg-gradient-sun-orange {
  background: linear-gradient(to right, var(--color-adventure-sun), var(--color-orange-400));
}

.backdrop-blur {
  backdrop-filter: blur(4px);
}

.backdrop-blur-sm {
  backdrop-filter: blur(8px);
}

/* -----------------------------------------
   Borders
   ----------------------------------------- */
.border {
  border-width: 1px;
  border-style: solid;
}

.border-2 {
  border-width: 2px;
  border-style: solid;
}

.border-4 {
  border-width: 4px;
  border-style: solid;
}

.border-t {
  border-top-width: 1px;
  border-top-style: solid;
}

.border-l-4 {
  border-left-width: 4px;
  border-left-style: solid;
}

.border-dashed {
  border-style: dashed;
}

.border-white {
  border-color: var(--color-white);
}

.border-gray-100 {
  border-color: var(--color-gray-100);
}

.border-gray-200 {
  border-color: var(--color-gray-200);
}

.border-adventure-sky {
  border-color: var(--color-adventure-sky);
}

.border-adventure-sky-30 {
  border-color: rgba(79, 195, 247, 0.3);
}

.border-adventure-sun {
  border-color: var(--color-adventure-sun);
}

.border-adventure-sand {
  border-color: var(--color-adventure-sand);
}

.border-orange-100 {
  border-color: #FFEDD5;
}

.border-orange-400 {
  border-color: var(--color-orange-400);
}

.border-error {
  border-color: var(--color-error);
}

.rounded-sm {
  border-radius: var(--radius-sm);
}

.rounded {
  border-radius: var(--radius-md);
}

.rounded-lg {
  border-radius: var(--radius-lg);
}

.rounded-xl {
  border-radius: var(--radius-xl);
}

.rounded-2xl {
  border-radius: var(--radius-2xl);
}

.rounded-3xl {
  border-radius: var(--radius-3xl);
}

.rounded-full {
  border-radius: var(--radius-full);
}

/* -----------------------------------------
   Shadows
   ----------------------------------------- */
.shadow-sm {
  box-shadow: var(--shadow-sm);
}

.shadow-md {
  box-shadow: var(--shadow-md);
}

.shadow-lg {
  box-shadow: var(--shadow-lg);
}

.shadow-xl {
  box-shadow: var(--shadow-xl);
}

.shadow-inner {
  box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
}

.card-shadow {
  box-shadow: 8px 8px 0px rgba(2, 136, 209, 0.2);
}

/* -----------------------------------------
   Overflow & Visibility
   ----------------------------------------- */
.overflow-hidden {
  overflow: hidden;
}

.overflow-x-hidden {
  overflow-x: hidden;
}

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

.resize-none {
  resize: none;
}

.opacity-0 {
  opacity: 0;
}

.opacity-80 {
  opacity: 0.8;
}

.opacity-90 {
  opacity: 0.9;
}

.opacity-100 {
  opacity: 1;
}

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

.pointer-events-none {
  pointer-events: none;
}

.pointer-events-auto {
  pointer-events: auto;
}

/* -----------------------------------------
   Transitions & Animations
   ----------------------------------------- */
.transition-all {
  transition-property: all;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.transition-colors {
  transition-property: color, background-color, border-color;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.transition-opacity {
  transition-property: opacity;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.transition-transform {
  transition-property: transform;
  transition-timing-function: cubic-bezier(0.4, 0, 0.2, 1);
  transition-duration: 150ms;
}

.duration-300 {
  transition-duration: 300ms;
}

.duration-500 {
  transition-duration: var(--transition-duration);
}

.ease-out {
  transition-timing-function: cubic-bezier(0, 0, 0.2, 1);
}

@keyframes bounce {

  0%,
  100% {
    transform: translateY(-25%);
    animation-timing-function: cubic-bezier(0.8, 0, 1, 1);
  }

  50% {
    transform: translateY(0);
    animation-timing-function: cubic-bezier(0, 0, 0.2, 1);
  }
}

.animate-bounce-slow {
  animation: bounce 3s infinite;
}

@keyframes float {

  0%,
  100% {
    transform: translateY(0);
  }

  50% {
    transform: translateY(-10px);
  }
}

.animate-float {
  animation: float 6s ease-in-out infinite;
}

@keyframes pop {
  0% {
    transform: scale(0.9);
    opacity: 0;
  }

  100% {
    transform: scale(1);
    opacity: 1;
  }
}

.animate-pop {
  animation: pop 0.3s cubic-bezier(0.175, 0.885, 0.32, 1.275);
}

@keyframes fadeInUp {
  0% {
    opacity: 0;
    transform: translateY(10px);
  }

  100% {
    opacity: 1;
    transform: translateY(0);
  }
}

.animate-fade-in-up {
  animation: fadeInUp 0.3s ease-out forwards;
}

/* -----------------------------------------
   Interactive States
   ----------------------------------------- */
.cursor-pointer {
  cursor: pointer;
}

.hover\:bg-gray-50:hover {
  background-color: var(--color-gray-50);
}

.hover\:bg-gray-100:hover {
  background-color: var(--color-gray-100);
}

.hover\:bg-gray-700:hover {
  background-color: var(--color-gray-700);
}

.hover\:bg-white-20:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.hover\:bg-adventure-sky:hover {
  background-color: var(--color-adventure-sky);
}

.hover\:text-white:hover {
  color: var(--color-white);
}

.hover\:text-red-400:hover {
  color: #F87171;
}

.hover\:border-adventure-sky:hover {
  border-color: var(--color-adventure-sky);
}

.hover\:scale-105:hover {
  transform: scale(1.05);
}

.active\:scale-95:active {
  transform: scale(0.95);
}

.group:hover .group-hover\:bg-adventure-sky {
  background-color: var(--color-adventure-sky);
}

.group:hover .group-hover\:text-white {
  color: var(--color-white);
}

/* Focus States */
.focus\:border-adventure-sky:focus {
  border-color: var(--color-adventure-sky);
}

.focus\:ring-4:focus {
  box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.2);
}

.outline-none {
  outline: none;
}

.outline-none:focus {
  outline: none;
}

/* Peer States (for radio buttons) */
.peer:checked~.peer-checked\:border-adventure-sky {
  border-color: var(--color-adventure-sky);
}

.peer:checked~.peer-checked\:bg-adventure-sky-10 {
  background-color: rgba(79, 195, 247, 0.1);
}

.peer:checked~div .peer-checked\:bg-adventure-sky {
  background-color: var(--color-adventure-sky);
}

.peer:checked~div .peer-checked\:text-white {
  color: var(--color-white);
}

/* -----------------------------------------
   Components: Buttons
   ----------------------------------------- */
.btn-adventure {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-4) var(--spacing-10);
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
  font-weight: 900;
  font-size: var(--font-size-lg);
  border: none;
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 0 var(--color-adventure-ocean-dark);
}

.btn-adventure:hover {
  transform: translateY(2px);
  box-shadow: 0 2px 0 var(--color-adventure-ocean-dark);
}

.btn-adventure:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 var(--color-adventure-ocean-dark);
}

.btn-secondary {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  background-color: var(--color-gray-200);
  color: var(--color-gray-600);
  font-weight: 700;
  border: none;
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all var(--transition-normal);
  box-shadow: 0 4px 0 #757575;
}

.btn-secondary:hover {
  background-color: var(--color-gray-300);
}

.btn-secondary:active {
  transform: translateY(4px);
  box-shadow: 0 0 0 #757575;
}

.btn-generate {
  background: linear-gradient(to right, var(--color-adventure-sun), var(--color-orange-400));
  box-shadow: 0 4px 12px rgba(255, 152, 0, 0.4);
}

.btn-generate:hover {
  transform: scale(1.05);
  box-shadow: 0 6px 16px rgba(255, 152, 0, 0.5);
}

/* -----------------------------------------
   Components: Form Elements
   ----------------------------------------- */
.input-field {
  width: 100%;
  padding: var(--spacing-3) var(--spacing-4);
  font-size: var(--font-size-lg);
  font-weight: 700;
  color: var(--color-gray-700);
  background-color: var(--color-white);
  border: 2px solid rgba(79, 195, 247, 0.3);
  border-radius: var(--radius-xl);
  outline: none;
  transition: all var(--transition-fast);
}

.input-field::placeholder {
  color: var(--color-gray-300);
}

.input-field:focus {
  border-color: var(--color-adventure-sky);
  box-shadow: 0 0 0 4px rgba(79, 195, 247, 0.2);
}

.input-field.error {
  border-color: var(--color-error);
  box-shadow: 0 0 0 4px rgba(255, 82, 82, 0.2);
}

textarea.input-field {
  resize: none;
  font-weight: 400;
}

/* -----------------------------------------
   Components: Option Cards (Radio Buttons)
   ----------------------------------------- */
.option-card {
  display: flex;
  align-items: center;
  gap: var(--spacing-3);
  padding: var(--spacing-4);
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-2xl);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.option-card:hover {
  background-color: var(--color-gray-50);
}

.option-card input[type="radio"] {
  position: absolute;
  width: 1px;
  height: 1px;
  padding: 0;
  margin: -1px;
  overflow: hidden;
  clip: rect(0, 0, 0, 0);
  white-space: nowrap;
  border: 0;
}

.option-card input[type="radio"]:checked+.option-card-inner,
.option-card:has(input[type="radio"]:checked) {
  border-color: var(--color-adventure-sky);
  background-color: rgba(79, 195, 247, 0.1);
}

.option-card-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background-color: var(--color-gray-100);
  color: var(--color-gray-400);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.option-card input[type="radio"]:checked~.option-card-icon,
.option-card:has(input[type="radio"]:checked) .option-card-icon {
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
}

/* -----------------------------------------
   Components: Feeling Chips
   ----------------------------------------- */
.feeling-chip {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-4);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-gray-600);
  background-color: transparent;
  border: 2px solid var(--color-gray-200);
  border-radius: var(--radius-full);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.feeling-chip:hover {
  background-color: var(--color-gray-50);
}

.feeling-chip:active {
  transform: scale(0.95);
}

.feeling-chip.selected {
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
  border-color: var(--color-adventure-sky);
}

/* -----------------------------------------
   Components: Step Cards
   ----------------------------------------- */
.step-card {
  display: none;
}

.step-card.active {
  display: block;
  animation: pop 0.5s forwards;
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  font-size: var(--font-size-2xl);
  font-weight: 900;
  color: var(--color-white);
  background-color: var(--color-adventure-sky);
  border-radius: var(--radius-2xl);
  box-shadow: var(--shadow-md);
}

/* -----------------------------------------
   Components: Progress Bar
   ----------------------------------------- */
.progress-container {
  position: relative;
  padding-top: var(--spacing-6);
  margin-bottom: var(--spacing-8);
}

.progress-track {
  height: 1rem;
  background-color: var(--color-white);
  border: 2px solid var(--color-adventure-sky);
  border-radius: var(--radius-full);
  overflow: hidden;
  box-shadow: inset 0 2px 4px 0 rgb(0 0 0 / 0.05);
}

.progress-bar {
  height: 100%;
  background: linear-gradient(to right, var(--color-adventure-sky), var(--color-adventure-ocean));
  transition: width var(--transition-duration) ease-out;
  position: relative;
}

.progress-icon {
  position: absolute;
  right: 0;
  top: 50%;
  transform: translateY(-50%) translateX(50%);
  background-color: var(--color-white);
  padding: var(--spacing-1);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
}

/* -----------------------------------------
   Components: Wizard Form Card
   ----------------------------------------- */
.wizard-card {
  background-color: var(--color-white);
  border: 4px solid var(--color-white);
  border-radius: 2rem;
  padding: var(--spacing-6);
  box-shadow: 8px 8px 0px rgba(2, 136, 209, 0.2);
}

.input-wrapper {
  background-color: var(--color-adventure-paper);
  padding: var(--spacing-4);
  border: 2px dashed var(--color-adventure-sand);
  border-radius: var(--radius-xl);
}

/* -----------------------------------------
   Components: Result Section
   ----------------------------------------- */
.result-header {
  background-color: var(--color-adventure-sky);
  padding: var(--spacing-8);
  text-align: center;
  position: relative;
  overflow: hidden;
}

.result-header::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  width: 100%;
  height: 100%;
  opacity: 0.1;
  background-image: url('data:image/svg+xml;base64,PHN2ZyB3aWR0aD0iMjAiIGhlaWdodD0iMjAiIHhtbG5zPSJodHRwOi8vd3d3LnczLm9yZy8yMDAwL3N2ZyI+PGNpcmNsZSBjeD0iMiIgY3k9IjIiIHI9IjIiIGZpbGw9IiNmZmYiLz48L3N2Zz4=');
}

.result-body {
  padding: var(--spacing-6);
  background-color: var(--color-adventure-paper);
}

.result-footer {
  display: flex;
  flex-wrap: wrap;
  justify-content: center;
  gap: var(--spacing-4);
  padding: var(--spacing-6);
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
}

/* Timeline Items */
.timeline-item {
  position: relative;
  padding-left: var(--spacing-6);
  border-left: 4px solid var(--color-adventure-sky);
}

.timeline-item::before {
  content: '';
  position: absolute;
  left: -11px;
  top: 0;
  width: 1.25rem;
  height: 1.25rem;
  background-color: var(--color-adventure-sky);
  border: 4px solid var(--color-white);
  border-radius: var(--radius-full);
}

.timeline-item.sun {
  border-left-color: var(--color-adventure-sun);
}

.timeline-item.sun::before {
  background-color: var(--color-adventure-sun);
}

.timeline-item.orange {
  border-left-color: var(--color-orange-400);
}

.timeline-item.orange::before {
  background-color: var(--color-orange-400);
}

/* Copy Cards */
.copy-card {
  position: relative;
  background-color: var(--color-white);
  border: 2px solid var(--color-gray-100);
  border-radius: var(--radius-xl);
  padding: var(--spacing-4);
  box-shadow: var(--shadow-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.copy-card:hover {
  border-color: var(--color-adventure-sky);
}

.copy-card-badge {
  position: absolute;
  top: var(--spacing-2);
  right: var(--spacing-2);
  font-size: 10px;
  font-weight: 700;
  background-color: var(--color-gray-100);
  color: var(--color-gray-500);
  padding: var(--spacing-1) var(--spacing-2);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.copy-card:hover .copy-card-badge {
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
}

/* -----------------------------------------
   Components: Modal
   ----------------------------------------- */
.modal-overlay {
  position: fixed;
  inset: 0;
  background-color: rgba(2, 136, 209, 0.7);
  z-index: 50;
}

.modal-content {
  position: relative;
  z-index: 51;
  background-color: var(--color-white);
  border-radius: var(--radius-3xl);
  box-shadow: var(--shadow-xl);
  width: 100%;
  max-width: 42rem;
  max-height: 90vh;
  margin: var(--spacing-4);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  transform: scale(0.95);
  opacity: 0;
  transition: all var(--transition-slow);
}

.modal-content.active {
  transform: scale(1);
  opacity: 1;
}

.modal-header {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-6);
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
}

.modal-close {
  display: flex;
  align-items: center;
  justify-content: center;
  padding: var(--spacing-1);
  background: transparent;
  border: none;
  border-radius: var(--radius-full);
  color: var(--color-white);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

.modal-close:hover {
  background-color: rgba(255, 255, 255, 0.2);
}

.modal-body {
  padding: var(--spacing-6);
  overflow-y: auto;
}

.modal-footer {
  padding: var(--spacing-6);
  background-color: var(--color-gray-50);
  border-top: 1px solid var(--color-gray-100);
  text-align: right;
}

/* Accordion/Details */
details {
  background-color: var(--color-gray-50);
  border: 1px solid var(--color-gray-200);
  border-radius: var(--radius-xl);
  overflow: hidden;
}

details summary {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: var(--spacing-4);
  font-weight: 700;
  color: var(--color-gray-700);
  cursor: pointer;
  transition: background-color var(--transition-fast);
}

details summary:hover {
  background-color: var(--color-gray-100);
}

details[open] summary .expand-icon {
  transform: rotate(180deg);
}

details>div {
  padding: var(--spacing-4);
  font-size: var(--font-size-sm);
  color: var(--color-gray-600);
  background-color: var(--color-white);
  border-top: 1px solid var(--color-gray-200);
  line-height: 1.6;
}

/* -----------------------------------------
   Components: Toast Notification
   ----------------------------------------- */
#toast-container {
  position: fixed;
  bottom: 20px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 100;
  display: flex;
  flex-direction: column;
  gap: 10px;
  pointer-events: none;
}

.toast {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-3) var(--spacing-6);
  background: rgba(255, 255, 255, 0.95);
  backdrop-filter: blur(5px);
  border: 2px solid var(--color-adventure-sky);
  border-radius: var(--radius-full);
  box-shadow: 0 4px 12px rgba(0, 0, 0, 0.15);
  font-weight: 700;
  color: var(--color-adventure-ocean);
  pointer-events: auto;
  animation: fadeInUp 0.3s ease-out forwards;
  transition: opacity var(--transition-slow), transform var(--transition-slow);
}

.toast.error {
  border-color: var(--color-error);
  color: var(--color-error-dark);
}

/* -----------------------------------------
   Components: Header Decorations
   ----------------------------------------- */
.header-sun {
  position: absolute;
  top: var(--spacing-10);
  left: var(--spacing-10);
  color: var(--color-adventure-sun);
  opacity: 0.8;
  animation: float 6s ease-in-out infinite;
}

.header-cloud {
  position: absolute;
  top: var(--spacing-20);
  right: var(--spacing-10);
  color: var(--color-white);
  animation: float 6s ease-in-out infinite;
  animation-delay: 1s;
}

/* -----------------------------------------
   Components: Parent Guide Button
   ----------------------------------------- */
.parent-btn {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-1);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(255, 255, 255, 0.9);
  backdrop-filter: blur(4px);
  color: var(--color-adventure-ocean);
  font-size: var(--font-size-sm);
  font-weight: 700;
  border: 2px solid var(--color-adventure-sky);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-md);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.parent-btn:hover {
  background-color: var(--color-adventure-sky);
  color: var(--color-white);
  transform: scale(1.05);
}

/* -----------------------------------------
   Components: Labels & Badges
   ----------------------------------------- */
.label {
  display: flex;
  align-items: center;
  gap: var(--spacing-2);
  font-size: var(--font-size-sm);
  font-weight: 700;
  color: var(--color-adventure-wood);
  margin-bottom: var(--spacing-2);
}

.badge {
  display: inline-flex;
  align-items: center;
  gap: var(--spacing-2);
  padding: var(--spacing-2) var(--spacing-4);
  background-color: rgba(255, 255, 255, 0.8);
  backdrop-filter: blur(4px);
  border: 2px solid var(--color-adventure-sky);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-sm);
  font-weight: 700;
  color: var(--color-adventure-ocean);
}

.quest-badge {
  display: inline-block;
  padding: var(--spacing-3) var(--spacing-6);
  background-color: var(--color-adventure-sun);
  color: var(--color-adventure-wood);
  font-size: var(--font-size-sm);
  font-weight: 900;
  border: 2px solid var(--color-white);
  border-radius: var(--radius-full);
  box-shadow: var(--shadow-lg);
}

/* -----------------------------------------
   Components: Lists
   ----------------------------------------- */
.list-disc {
  list-style-type: disc;
  padding-left: var(--spacing-5);
}

.list-disc li {
  margin-top: var(--spacing-1);
}

.leading-relaxed {
  line-height: 1.625;
}

/* -----------------------------------------
   Responsive Design
   ----------------------------------------- */
@media (min-width: 768px) {
  .md\:hidden {
    display: none;
  }

  .md\:grid-cols-2 {
    grid-template-columns: repeat(2, minmax(0, 1fr));
  }

  .md\:grid-cols-3 {
    grid-template-columns: repeat(3, minmax(0, 1fr));
  }

  .md\:p-10 {
    padding: var(--spacing-10);
  }

  .md\:text-5xl {
    font-size: var(--font-size-5xl);
  }

  .wizard-card {
    padding: var(--spacing-10);
  }

  .result-body {
    padding: var(--spacing-10);
  }
}

@media (max-width: 640px) {
  .sm\:flex-row {
    flex-direction: row;
  }

  .sm\:ml-auto {
    margin-left: auto;
  }

  .result-footer {
    flex-direction: column;
  }

  .result-footer button {
    width: 100%;
    justify-content: center;
  }
}

/* -----------------------------------------
   Custom Scrollbar
   ----------------------------------------- */
::-webkit-scrollbar {
  width: 10px;
}

::-webkit-scrollbar-track {
  background: var(--bg-primary);
}

::-webkit-scrollbar-thumb {
  background: var(--color-adventure-sky);
  border-radius: 5px;
}

::-webkit-scrollbar-thumb:hover {
  background: var(--color-adventure-ocean);
}

/* -----------------------------------------
   Print Styles
   ----------------------------------------- */
@media print {
  body {
    background: white !important;
    background-image: none !important;
    color: black !important;
    padding: 0 !important;
  }

  .print\:hidden,
  #toast-container,
  .parent-btn,
  .btn-secondary,
  .btn-adventure,
  #reset-btn,
  .modal-overlay,
  .header-sun,
  .header-cloud,
  header,
  .progress-container {
    display: none !important;
  }

  .card-shadow {
    box-shadow: none !important;
    border: 1px solid #ccc !important;
  }

  .result-header {
    background-color: #f0f0f0 !important;
    -webkit-print-color-adjust: exact;
    print-color-adjust: exact;
  }

  .result-body {
    background-color: white !important;
  }

  .timeline-item {
    border-left-color: #333 !important;
    page-break-inside: avoid;
  }

  .timeline-item::before {
    background-color: #333 !important;
    border-color: white !important;
  }

  .copy-card {
    border: 1px solid #ccc !important;
    box-shadow: none !important;
    page-break-inside: avoid;
  }

  .copy-card-badge {
    display: none !important;
  }

  a {
    text-decoration: none !important;
    color: inherit !important;
  }

  @page {
    margin: 1.5cm;
  }
}

/* -----------------------------------------
   Accessibility
   ----------------------------------------- */
@media (prefers-reduced-motion: reduce) {

  *,
  *::before,
  *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

/* Focus visible for keyboard users */
:focus-visible {
  outline: 3px solid var(--color-adventure-sky);
  outline-offset: 2px;
}

/* Skip link for keyboard navigation */
.skip-link {
  position: absolute;
  top: -40px;
  left: 0;
  background: var(--color-adventure-ocean);
  color: white;
  padding: var(--spacing-2) var(--spacing-4);
  z-index: 100;
  text-decoration: none;
  font-weight: 700;
}

.skip-link:focus {
  top: 0;
}

/* Noscript Warning */
.noscript-warning {
  padding: var(--spacing-4);
  background-color: #FEF2F2;
  border: 2px solid var(--color-error);
  border-radius: var(--radius-xl);
  text-align: center;
  color: var(--color-error-dark);
  font-weight: 700;
  margin: var(--spacing-4);
}