/* ==========================================================================
   Base.css — Design System Tokens & Base Styles（重複統合済み）
   ========================================================================== */

/* ---- Tokens (hp-styles.cssに完全準拠) ------------------------------------ */
:root {
  /* Colors */
  --primary-blue: #1d4ed8;
  --primary-blue-hover: #1e40af;
  --primary-blue-light: #3b82f6;

  --text-primary: #1f2937;
  --text-secondary: #4b5563;
  --text-muted: #6b7280;
  --text-light: #9ca3af;

  --background-white: #ffffff;
  --background-gray-50: #f9fafb;
  --background-gray-100: #f3f4f6;

  --border-gray: #e5e7eb;
  --border-gray-light: #d1d5db;

  /* Shadows */
  --shadow-sm: 0 1px 2px 0 rgba(0,0,0,0.05);
  --shadow-md: 0 4px 6px -1px rgba(0,0,0,0.1), 0 2px 4px -1px rgba(0,0,0,0.06);
  --shadow-lg: 0 10px 15px -3px rgba(0,0,0,0.1), 0 4px 6px -2px rgba(0,0,0,0.05);

  /* Typography */
  --font-family: "Noto Sans JP", system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans", "Apple Color Emoji", "Segoe UI Emoji", "Segoe UI Symbol", "Noto Color Emoji", 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;

  /* Spacing */
  --spacing-xs: 0.5rem;
  --spacing-sm: 0.75rem;
  --spacing-md: 1rem;
  --spacing-lg: 1.5rem;
  --spacing-xl: 2rem;
  --spacing-2xl: 3rem;
  --spacing-3xl: 4rem;
  --spacing-4xl: 5rem;

  /* Radius */
  --radius-sm: 0.375rem;
  --radius-md: 0.5rem;
  --radius-lg: 0.75rem;
  --radius-xl: 1rem;
  --radius-full: 9999px;

  /* Layout */
  --container-max: 1200px;
}

/* ==========================================================================
   Reset / Base
   ========================================================================== */

*,
*::before,
*::after {
  box-sizing: border-box;
}

html {
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: var(--font-family);
  font-size: var(--font-size-base);
  line-height: 1.6;
  color: var(--text-primary);
  background: var(--background-gray-50);
}

img,
svg,
video,
canvas,
audio,
iframe,
embed,
object {
  display: block;
  max-width: 100%;
}

img,
video {
  height: auto;
}

picture {
  display: block;
}

h1, h2, h3, h4, h5, h6 {
  margin: 0 0 var(--spacing-md);
  font-weight: 700;
  line-height: 1.3;
  color: var(--text-primary);
}

h1 { font-size: var(--font-size-4xl); }
h2 { font-size: var(--font-size-3xl); }
h3 { font-size: var(--font-size-2xl); }
h4 { font-size: var(--font-size-xl); }
h5 { font-size: var(--font-size-lg); }
h6 { font-size: var(--font-size-base); }

p {
  margin: 0 0 var(--spacing-md);
  color: var(--text-secondary);
}

a {
  color: inherit;
  text-decoration: none;
  transition: color 0.3s ease, background-color 0.3s ease;
}

ul, ol {
  margin: 0 0 var(--spacing-md);
  padding-left: 1.25rem;
}

small { font-size: 80%; }

/* Form primitives */
input, select, textarea, button {
  font: inherit;
  color: inherit;
}

/* ==========================================================================
   Layout Primitives
   ========================================================================== */

.container {
  max-width: var(--container-max);
  margin: 0 auto;
  padding: 0 var(--spacing-lg);
}

.section {
  padding: var(--spacing-4xl) 0;
}

.section-white {
  background: var(--background-white);
}

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

.section-title {
  font-size: var(--font-size-3xl);
  font-weight: 700;
  text-align: center;
  color: var(--text-primary);
  margin-bottom: var(--spacing-2xl);
}

/* ==========================================================================
   Buttons (共通ボタンシステム)
   ========================================================================== */

.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;

  padding: var(--spacing-sm) var(--spacing-xl);
  border-radius: var(--radius-sm);

  font-weight: 600;
  font-size: var(--font-size-base);
  line-height: 1;

  cursor: pointer;
  user-select: none;
  text-decoration: none;
  border: none;

  transition: transform 0.2s ease, box-shadow 0.2s ease, background-color 0.3s ease, color 0.3s ease;
  will-change: transform;
}

/* Primary */
.btn-primary {
  background: var(--primary-blue);
  color: var(--background-white);
  box-shadow: var(--shadow-sm);
}
.btn-primary:hover {
  background: var(--primary-blue-hover);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-primary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Secondary (LINE系グラデ) */
.btn-secondary {
  background: linear-gradient(135deg, #06c755, #05a847);
  color: var(--background-white);
  box-shadow: var(--shadow-sm);
}
.btn-secondary:hover {
  background: linear-gradient(135deg, #05a847, #048639);
  transform: translateY(-1px);
  box-shadow: var(--shadow-md);
}
.btn-secondary:active {
  transform: translateY(0);
  box-shadow: var(--shadow-sm);
}

/* Outline */
.btn-outline {
  background: transparent;
  color: var(--primary-blue);
  border: 1px solid var(--primary-blue);
}
.btn-outline:hover {
  background: #eff6ff; /* blue-50 */
}

/* Sizes */
.btn-small { padding: var(--spacing-xs) var(--spacing-lg); font-size: var(--font-size-sm); }
.btn-large { padding: var(--spacing-md) var(--spacing-2xl); font-size: var(--font-size-lg); border-radius: var(--radius-md); }

/* Icon-only support */
.btn-icon {
  padding: var(--spacing-sm);
  width: 2.5rem;
  height: 2.5rem;
}

/* Disabled */
.btn[disabled],
.btn.disabled {
  opacity: 0.6;
  cursor: not-allowed;
  pointer-events: none;
}

/* ==========================================================================
   Text Utilities（統合）
   ========================================================================== */

.text-left   { text-align: left !important; }
.text-center { text-align: center !important; }
.text-right  { text-align: right !important; }
.text-muted  { color: var(--text-muted) !important; }
.text-light  { color: var(--text-light) !important; }
.text-primary{ color: var(--primary-blue) !important; }

/* ==========================================================================
   Display / Visibility Utilities（統合）
   ========================================================================== */

.hidden { display: none !important; }

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

/* キーボードフォーカス時に可視化 */
.sr-only-focusable:active,
.sr-only-focusable:focus {
  position: static !important;
  width: auto !important;
  height: auto !important;
  margin: 0 !important;
  overflow: visible !important;
  clip: auto !important;
  white-space: normal !important;
}

/* ==========================================================================
   Spacing Utilities（統合）
   ========================================================================== */

.mt-0 { margin-top: 0 !important; }
.mb-0 { margin-bottom: 0 !important; }
.mt-sm { margin-top: var(--spacing-sm) !important; }
.mb-sm { margin-bottom: var(--spacing-sm) !important; }
.mt-md { margin-top: var(--spacing-md) !important; }
.mb-md { margin-bottom: var(--spacing-md) !important; }
.mt-lg { margin-top: var(--spacing-lg) !important; }
.mb-lg { margin-bottom: var(--spacing-lg) !important; }

/* Width / Layout helpers */
.w-full   { width: 100% !important; }
.max-w-screen { max-width: 100vw !important; }
.mx-auto { margin-left: auto !important; margin-right: auto !important; }

/* ==========================================================================
   Interaction Utilities（統合）
   ========================================================================== */

.pointer-none { pointer-events: none !important; }
.pointer-auto { pointer-events: auto !important; }
.user-select-none { user-select: none !important; }

/* ==========================================================================
   Media Queries（統合）
   ========================================================================== */

@media (max-width: 768px) {
  .container {
    padding: 0 var(--spacing-md);
  }
  .section {
    padding: var(--spacing-3xl) 0;
  }
  .section-title {
    font-size: var(--font-size-2xl);
  }
}

/* ==========================================================================
   Reduced Motion（統合）
   ========================================================================== */

@media (prefers-reduced-motion: reduce) {
  * {
    animation-duration: 0.001ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.001ms !important;
    scroll-behavior: auto !important;
  }
}

/* 任意で、ページ単位で低モーションを強制したい時に付与 */
.reduced-motion * {
  animation: none !important;
  transition: none !important;
}

/* ==========================================================================
   Print（統合）
   ========================================================================== */

.no-print { display: none !important; } /* 個別に非表示にしたい要素用 */

@media print {
  /* 全体の見た目を印刷向けに簡素化 */
  * , *::before, *::after {
    animation: none !important;
    transition: none !important;
    box-shadow: none !important;
    text-shadow: none !important;
  }
  html, body {
    background: #fff !important;
    color: #000 !important;
  }

  /* 余白と可読性の調整 */
  .section { padding: var(--spacing-xl) 0 !important; }
  a { text-decoration: underline !important; }

  /* 画面専用UIは印刷で隠す */
  .fixed-cta-container,
  .no-print { display: none !important; }
  
  .btn {
    box-shadow: none !important;
    transform: none !important;
  }
}