/* ============================================================
   こども声かけナビ — Design System & Styles
   ============================================================ */

/* --- Google Fonts --- */
@import url('https://fonts.googleapis.com/css2?family=Zen+Maru+Gothic:wght@400;500;700;900&family=Noto+Sans+JP:wght@300;400;500;700&display=swap');

/* --- CSS Variables --- */
:root {
  /* Colors */
  --color-primary: #F7A072;
  --color-primary-dark: #E8854A;
  --color-primary-light: #FFC9A8;
  --color-accent: #A78BFA;
  --color-accent-light: #DDD6FE;
  --color-mint: #6EE7B7;
  --color-mint-light: #A7F3D0;
  --color-gold: #FBBF24;
  --color-gold-light: #FDE68A;
  --color-rose: #FDA4AF;
  --color-rose-light: #FECDD3;
  --color-sky: #7DD3FC;

  --color-bg: #FFFBF5;
  --color-bg-alt: #FFF7ED;
  --color-surface: #FFFFFF;
  --color-text: #3D3029;
  --color-text-muted: #7C6F64;
  --color-text-light: #A89888;
  --color-border: #F0E6DA;

  /* Typography */
  --font-heading: 'Zen Maru Gothic', 'Rounded Mplus 1c', sans-serif;
  --font-body: 'Noto Sans JP', 'Hiragino Sans', sans-serif;

  /* Spacing */
  --space-xs: 4px;
  --space-sm: 8px;
  --space-md: 16px;
  --space-lg: 24px;
  --space-xl: 40px;
  --space-2xl: 64px;
  --space-3xl: 96px;

  /* Borders & Shadows */
  --radius-sm: 8px;
  --radius-md: 16px;
  --radius-lg: 24px;
  --radius-xl: 32px;
  --radius-pill: 50px;

  --shadow-soft: 0 4px 14px rgba(0, 0, 0, 0.06);
  --shadow-card: 0 8px 30px rgba(0, 0, 0, 0.08);
  --shadow-hover: 0 12px 40px rgba(0, 0, 0, 0.12);
  --shadow-glow: 0 0 40px rgba(247, 160, 114, 0.2);

  /* Transitions */
  --transition-fast: 150ms ease;
  --transition-normal: 250ms ease;
  --transition-slow: 400ms ease;
}

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

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

body {
  font-family: var(--font-body);
  color: var(--color-text);
  background: var(--color-bg);
  line-height: 1.8;
  overflow-x: hidden;
}

h1, h2, h3, h4 {
  font-family: var(--font-heading);
  line-height: 1.4;
  font-weight: 700;
}

/* --- Layout --- */
.container {
  max-width: 720px;
  margin: 0 auto;
  padding: 0 var(--space-lg);
}

/* ===========================================================
   Header
   =========================================================== */
.site-header {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  z-index: 100;
  background: rgba(255, 251, 245, 0.85);
  backdrop-filter: blur(12px);
  -webkit-backdrop-filter: blur(12px);
  border-bottom: 1px solid var(--color-border);
  transition: box-shadow var(--transition-normal);
}

.site-header.scrolled {
  box-shadow: var(--shadow-soft);
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: var(--space-md) var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.logo {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  text-decoration: none;
  color: var(--color-text);
}

.logo-icon {
  width: 32px;
  height: 32px;
  background: var(--color-primary);
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 18px;
}

.logo-text {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 1.1rem;
  letter-spacing: -0.02em;
}

.header-badge {
  font-size: 0.7rem;
  padding: 3px 10px;
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-weight: 500;
}

/* ===========================================================
   Hero Section
   =========================================================== */
.hero {
  position: relative;
  padding: calc(80px + var(--space-3xl)) 0 var(--space-3xl);
  background: #FFF1E6;
  overflow: hidden;
}

/* Decorative pseudo-elements removed — no gradients */

.hero-content {
  text-align: center;
  position: relative;
  z-index: 1;
}

.hero-badge {
  display: inline-flex;
  align-items: center;
  gap: var(--space-xs);
  font-size: 0.8rem;
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.7);
  backdrop-filter: blur(8px);
  border: 1px solid rgba(247, 160, 114, 0.2);
  border-radius: var(--radius-pill);
  color: var(--color-text-muted);
  font-weight: 500;
  margin-bottom: var(--space-lg);
}

.hero h1 {
  font-size: 2rem;
  font-weight: 900;
  color: var(--color-text);
  margin-bottom: var(--space-md);
  letter-spacing: -0.02em;
  line-height: 1.5;
}

.hero h1 em {
  font-style: normal;
  color: var(--color-primary-dark);
}

.hero-subtitle {
  font-size: 0.95rem;
  color: var(--color-text-muted);
  max-width: 480px;
  margin: 0 auto var(--space-xl);
  line-height: 1.9;
}

/* Decorative stars removed — continuous decorative animation is an anti-pattern */

/* ===========================================================
   Date Input Form
   =========================================================== */
.date-form {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--space-lg);
}

.date-selects {
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  flex-wrap: wrap;
  justify-content: center;
}

.select-group {
  display: flex;
  align-items: center;
  gap: 4px;
}

.select-group select {
  appearance: none;
  -webkit-appearance: none;
  background: var(--color-surface);
  border: 2px solid var(--color-border);
  border-radius: var(--radius-sm);
  padding: 12px 36px 12px 16px;
  font-family: var(--font-body);
  font-size: 1.05rem;
  font-weight: 500;
  color: var(--color-text);
  cursor: pointer;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
  background-image: url("data:image/svg+xml,%3Csvg xmlns='http://www.w3.org/2000/svg' width='16' height='16' viewBox='0 0 24 24' fill='none' stroke='%23A89888' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='m6 9 6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 12px center;
}

.select-group select:focus {
  outline: none;
  border-color: var(--color-primary);
  box-shadow: 0 0 0 3px rgba(247, 160, 114, 0.2);
}

.select-group select:hover {
  border-color: var(--color-primary-light);
}

.select-label {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

/* --- CTA Button --- */
.btn-primary {
  display: inline-flex;
  align-items: center;
  gap: var(--space-sm);
  padding: 16px 48px;
  background: var(--color-primary);
  color: white;
  border: none;
  border-radius: var(--radius-pill);
  font-family: var(--font-heading);
  font-size: 1.1rem;
  font-weight: 700;
  cursor: pointer;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
  box-shadow: 0 4px 16px rgba(247, 160, 114, 0.35);
  position: relative;
  overflow: hidden;
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(247, 160, 114, 0.45);
}

.btn-primary:active {
  transform: translateY(0);
}

.btn-primary .btn-icon {
  font-size: 1.3rem;
  transition: transform var(--transition-normal);
}

.btn-primary:hover .btn-icon {
  transform: translateX(3px);
}

/* Loading state */
.btn-primary.loading {
  pointer-events: none;
  opacity: 0.8;
}

.btn-primary.loading .btn-text {
  opacity: 0;
}

.btn-primary.loading::after {
  content: '';
  position: absolute;
  width: 20px;
  height: 20px;
  border: 3px solid rgba(255, 255, 255, 0.3);
  border-top-color: white;
  border-radius: 50%;
  animation: spin 0.6s linear infinite;
}

@keyframes spin {
  to { transform: rotate(360deg); }
}

/* ===========================================================
   Result Section
   =========================================================== */
.result-section {
  padding: var(--space-3xl) 0;
  background: var(--color-surface);
  display: none;
}

.result-section.visible {
  display: block;
  animation: fadeInUp 0.6s ease;
}

@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

.result-header {
  text-align: center;
  margin-bottom: var(--space-xl);
}

.result-header h2 {
  font-size: 1.3rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.result-header .child-date {
  font-size: 0.85rem;
  color: var(--color-text-light);
  margin-top: var(--space-xs);
}

/* --- Type Card --- */
.type-card {
  background: #FFF5EE;
  border-radius: var(--radius-lg);
  padding: var(--space-xl) var(--space-lg);
  text-align: center;
  box-shadow: var(--shadow-card);
  margin-bottom: var(--space-xl);
  position: relative;
  overflow: hidden;
}

.type-card::before {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 4px;
  background: var(--color-primary);
}

.type-card-icon {
  width: 56px;
  height: 56px;
  margin: 0 auto var(--space-md);
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--color-bg-alt);
  border-radius: 50%;
  padding: 10px;
}

.type-name {
  font-family: var(--font-heading);
  font-size: 1.8rem;
  font-weight: 900;
  color: var(--color-primary-dark);
  margin-bottom: var(--space-xs);
}

.type-star-name {
  font-size: 0.85rem;
  color: var(--color-text-muted);
  margin-bottom: var(--space-md);
}

.type-keywords {
  display: flex;
  flex-wrap: wrap;
  gap: var(--space-sm);
  justify-content: center;
  margin-bottom: var(--space-lg);
}

.keyword-tag {
  padding: 6px 16px;
  background: rgba(255, 255, 255, 0.8);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-size: 0.8rem;
  color: var(--color-text-muted);
  font-weight: 500;
}

.type-nature {
  font-size: 0.95rem;
  color: var(--color-text);
  line-height: 1.9;
  max-width: 420px;
  margin: 0 auto;
}

/* --- Traits Grid (得意・苦手・NG) --- */
.traits-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: var(--space-md);
  margin-bottom: var(--space-xl);
}

.trait-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-md);
  box-shadow: var(--shadow-soft);
  border-top: 3px solid var(--color-border);
}

.trait-strengths { border-top-color: var(--color-mint); }
.trait-challenges { border-top-color: var(--color-gold); }
.trait-ngwords { border-top-color: var(--color-rose); }

.trait-card-title {
  font-family: var(--font-heading);
  font-size: 0.8rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: var(--space-sm);
  display: flex;
  align-items: center;
  gap: 6px;
}

.trait-strengths .trait-card-title svg { color: var(--color-mint); }
.trait-challenges .trait-card-title svg { color: var(--color-gold); }
.trait-ngwords .trait-card-title svg { color: var(--color-rose); }

.trait-card p {
  font-size: 0.82rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* --- Advice Cards --- */
.advice-section {
  margin-bottom: var(--space-xl);
}

.advice-title {
  font-size: 1.15rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
}

.advice-title-icon {
  width: 28px;
  height: 28px;
  background: var(--color-primary);
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  color: white;
  font-size: 14px;
}

.advice-list {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.advice-card {
  background: var(--color-surface);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
  box-shadow: var(--shadow-soft);
  border-left: 4px solid var(--color-primary);
  position: relative;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast);
}

.advice-card:nth-child(2) {
  border-left-color: var(--color-accent);
}

.advice-card:nth-child(3) {
  border-left-color: var(--color-mint);
}

.advice-card:nth-child(4) {
  border-left-color: var(--color-gold);
}

.advice-card:nth-child(5) {
  border-left-color: var(--color-rose);
}

.advice-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-hover);
}

.advice-number {
  position: absolute;
  top: -10px;
  left: 16px;
  width: 28px;
  height: 28px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 700;
  color: white;
}

.advice-card:nth-child(1) .advice-number { background: var(--color-primary); }
.advice-card:nth-child(2) .advice-number { background: var(--color-accent); }
.advice-card:nth-child(3) .advice-number { background: var(--color-mint); color: var(--color-text); }
.advice-card:nth-child(4) .advice-number { background: var(--color-gold); color: var(--color-text); }
.advice-card:nth-child(5) .advice-number { background: var(--color-rose); color: var(--color-text); }

.advice-text {
  font-size: 0.95rem;
  line-height: 1.8;
  color: var(--color-text);
}

/* --- Recommended Books --- */
.recommend-section {
  margin-bottom: var(--space-xl);
}

.recommend-title {
  font-size: 1.05rem;
  font-weight: 700;
  text-align: center;
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  color: var(--color-text);
}

.recommend-title svg {
  color: var(--color-primary);
}

.recommend-grid {
  display: flex;
  flex-direction: column;
  gap: var(--space-md);
}

.recommend-card {
  display: flex;
  align-items: center;
  gap: var(--space-md);
  padding: var(--space-md) var(--space-lg);
  background: var(--color-surface);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-md);
  text-decoration: none;
  color: inherit;
  transition: transform var(--transition-fast), box-shadow var(--transition-fast), border-color var(--transition-fast);
}

.recommend-card:hover {
  transform: translateY(-2px);
  box-shadow: var(--shadow-card);
  border-color: var(--color-primary-light);
}

.recommend-card-icon {
  flex-shrink: 0;
  width: 44px;
  height: 44px;
  background: var(--color-bg-alt);
  border-radius: var(--radius-sm);
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--color-primary);
}

.recommend-card-body {
  flex: 1;
  min-width: 0;
}

.recommend-card-title {
  font-family: var(--font-heading);
  font-size: 0.9rem;
  font-weight: 700;
  color: var(--color-text);
  margin-bottom: 4px;
}

.recommend-card-reason {
  font-size: 0.78rem;
  color: var(--color-text-muted);
  line-height: 1.6;
}

.recommend-card-arrow {
  flex-shrink: 0;
  color: var(--color-text-light);
  transition: color var(--transition-fast), transform var(--transition-fast);
}

.recommend-card:hover .recommend-card-arrow {
  color: var(--color-primary);
  transform: translate(2px, -2px);
}

.recommend-note {
  text-align: center;
  font-size: 0.7rem;
  color: var(--color-text-light);
  margin-top: var(--space-sm);
}

/* --- Pillar Info (collapsible detail) --- */
.pillar-section {
  margin-top: var(--space-lg);
}

.pillar-toggle {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--space-sm);
  padding: 10px var(--space-lg);
  background: var(--color-bg-alt);
  border: 1px solid var(--color-border);
  border-radius: var(--radius-pill);
  font-family: var(--font-body);
  font-size: 0.85rem;
  color: var(--color-text-muted);
  cursor: pointer;
  transition: background var(--transition-fast);
  width: 100%;
  max-width: 300px;
  margin: 0 auto;
}

.pillar-toggle:hover {
  background: var(--color-border);
}

.pillar-toggle-icon {
  transition: transform var(--transition-normal);
  font-size: 0.7rem;
}

.pillar-toggle.open .pillar-toggle-icon {
  transform: rotate(180deg);
}

.pillar-detail {
  display: none;
  margin-top: var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
  padding: var(--space-lg);
}

.pillar-detail.visible {
  display: block;
  animation: fadeInUp 0.3s ease;
}

.pillar-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 0.85rem;
}

.pillar-table th,
.pillar-table td {
  padding: var(--space-sm) var(--space-md);
  text-align: center;
  border-bottom: 1px solid var(--color-border);
}

.pillar-table th {
  color: var(--color-text-muted);
  font-weight: 500;
  font-size: 0.8rem;
}

.pillar-table td {
  font-weight: 500;
  color: var(--color-text);
}

.pillar-table .label-cell {
  text-align: left;
  color: var(--color-text-muted);
  font-size: 0.8rem;
}

/* ===========================================================
   About Section
   =========================================================== */
.about-section {
  padding: var(--space-3xl) 0;
  background: var(--color-bg-alt);
}

.about-card {
  background: var(--color-surface);
  border-radius: var(--radius-lg);
  padding: var(--space-xl);
  box-shadow: var(--shadow-soft);
}

.about-card h2 {
  font-size: 1.3rem;
  margin-bottom: var(--space-md);
  display: flex;
  align-items: center;
  gap: var(--space-sm);
}

.about-card p {
  font-size: 0.9rem;
  color: var(--color-text-muted);
  line-height: 2;
}

.about-features {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(180px, 1fr));
  gap: var(--space-md);
  margin-top: var(--space-lg);
}

.feature-item {
  text-align: center;
  padding: var(--space-lg) var(--space-md);
  background: var(--color-bg-alt);
  border-radius: var(--radius-md);
}

.feature-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  margin-bottom: var(--space-sm);
  height: 36px;
}

.feature-title {
  font-family: var(--font-heading);
  font-weight: 700;
  font-size: 0.9rem;
  margin-bottom: var(--space-xs);
}

.feature-desc {
  font-size: 0.8rem;
  color: var(--color-text-muted);
  line-height: 1.7;
}

/* ===========================================================
   Footer
   =========================================================== */
.site-footer {
  padding: var(--space-xl) 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
  text-align: center;
}

.footer-disclaimer {
  font-size: 0.75rem;
  color: var(--color-text-light);
  max-width: 480px;
  margin: 0 auto var(--space-md);
  line-height: 1.8;
}

.footer-copyright {
  font-size: 0.7rem;
  color: var(--color-text-light);
}

/* ===========================================================
   Responsive
   =========================================================== */
@media (max-width: 640px) {
  .hero h1 {
    font-size: 1.5rem;
  }

  .hero-subtitle {
    font-size: 0.85rem;
  }

  .date-selects {
    gap: 6px;
  }

  .select-group select {
    padding: 10px 28px 10px 12px;
    font-size: 0.95rem;
  }

  .btn-primary {
    padding: 14px 36px;
    font-size: 1rem;
  }

  .type-name {
    font-size: 1.5rem;
  }

  .type-card {
    padding: var(--space-lg);
  }

  .about-features {
    grid-template-columns: 1fr;
  }

  .traits-grid {
    grid-template-columns: 1fr;
  }
}

/* ===========================================================
   Utility: Reduced Motion
   =========================================================== */
@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }

  html {
    scroll-behavior: auto;
  }
}