/* ============================================================
   AI実装診断ツール - スタイルシート
   株式会社うつろい / 墨×藍×朱の和の配色
   ============================================================ */

:root {
  /* Color tokens */
  --ink: #1F2937;          /* 墨色 */
  --ink-soft: #2D3748;
  --indigo: #1E3A5F;       /* 藍色 */
  --indigo-soft: #4A6FA5;
  --vermilion: #A93226;    /* 朱色 */
  --vermilion-soft: #C0392B;
  --paper: #F8F9FA;
  --paleblue: #EFF3FA;
  --palered: #FBEEEC;
  --palegreen: #ECF5EE;
  --green: #2D6A4F;
  --gray: #64748B;
  --gray-light: #94A3B8;
  --border: #E2E8F0;
  --white: #FFFFFF;

  /* Typography */
  --font-serif: 'Noto Serif JP', 'Yu Mincho', '游明朝', YuMincho, 'Hiragino Mincho ProN', serif;
  --font-sans: 'Noto Sans JP', 'Yu Gothic', '游ゴシック', YuGothic, 'Hiragino Sans', sans-serif;

  /* Spacing & radius */
  --radius-sm: 6px;
  --radius-md: 8px;
  --radius-lg: 12px;
  --radius-xl: 16px;
}

/* Reset */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
}

html {
  scroll-behavior: smooth;
}

body {
  font-family: var(--font-sans);
  font-size: 16px;
  line-height: 1.7;
  color: var(--ink);
  background: var(--paper);
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

button {
  font-family: inherit;
  cursor: pointer;
  border: none;
  background: none;
}

/* ============================================================
   Page header / footer
   ============================================================ */

.page-header {
  background: var(--ink);
  color: var(--white);
  border-bottom: 3px solid var(--vermilion);
}

.header-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 0.875rem 1.25rem;
}

.brand {
  display: flex;
  align-items: center;
  gap: 0.625rem;
  font-size: 12px;
  letter-spacing: 0.05em;
}

.brand-vermilion-bar {
  display: inline-block;
  width: 3px;
  height: 14px;
  background: var(--vermilion);
}

.brand-name {
  font-weight: 500;
}

.brand-divider {
  color: var(--gray-light);
}

.brand-role {
  color: #CADCFC;
}

.page-footer {
  background: var(--ink);
  color: var(--white);
  margin-top: 3rem;
}

.footer-inner {
  max-width: 720px;
  margin: 0 auto;
  padding: 1.5rem 1.25rem;
  text-align: center;
}

.footer-brand {
  display: flex;
  justify-content: center;
  align-items: center;
  gap: 0.625rem;
  font-size: 14px;
  font-weight: 500;
  margin-bottom: 0.375rem;
}

.footer-divider {
  color: var(--gray-light);
}

.footer-meta {
  font-size: 11px;
  color: #CADCFC;
  letter-spacing: 0.03em;
}

/* ============================================================
   Page main
   ============================================================ */

.page-main {
  max-width: 720px;
  margin: 0 auto;
  padding: 2.5rem 1.25rem 1.5rem;
}

/* Hero */
.hero {
  margin-bottom: 2rem;
  padding-bottom: 1.5rem;
  border-bottom: 1px solid var(--border);
}

.hero-eyebrow {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.2em;
  text-transform: uppercase;
  margin-bottom: 0.625rem;
  font-weight: 500;
}

.hero-title {
  font-family: var(--font-serif);
  font-size: 28px;
  font-weight: 500;
  line-height: 1.4;
  color: var(--ink);
  margin-bottom: 0.875rem;
}

.hero-lead {
  font-size: 14px;
  color: var(--gray);
  line-height: 1.8;
}

/* ============================================================
   Diagnostic widget
   ============================================================ */

.diag-container {
  margin-bottom: 2.5rem;
}

.diag-progress {
  display: flex;
  gap: 6px;
  margin-bottom: 2rem;
}

.diag-progress-step {
  flex: 1;
  height: 4px;
  background: var(--border);
  border-radius: 2px;
  transition: background 0.3s ease;
}

.diag-progress-step.active { background: var(--vermilion); }
.diag-progress-step.done { background: var(--indigo); }

.diag-screen { display: none; }
.diag-screen.visible { display: block; animation: fadeIn 0.3s ease; }

@keyframes fadeIn {
  from { opacity: 0; transform: translateY(4px); }
  to { opacity: 1; transform: translateY(0); }
}

.diag-q-num {
  font-size: 11px;
  color: var(--vermilion);
  letter-spacing: 0.15em;
  font-weight: 500;
  margin-bottom: 0.5rem;
}

.diag-question {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 1.5rem;
  line-height: 1.5;
}

/* Checklist */
.diag-checklist {
  display: flex;
  flex-direction: column;
  gap: 8px;
  margin-bottom: 1.75rem;
}

.diag-check-item {
  display: flex;
  align-items: flex-start;
  gap: 12px;
  width: 100%;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  text-align: left;
  font-size: 14px;
  color: var(--ink);
  transition: all 0.15s ease;
}

.diag-check-item:hover {
  border-color: var(--gray-light);
  background: var(--paleblue);
}

.diag-check-item.checked {
  border: 1.5px solid var(--vermilion);
  background: var(--palered);
}

.diag-check-box {
  flex-shrink: 0;
  width: 22px;
  height: 22px;
  border: 1.5px solid var(--gray);
  border-radius: 4px;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all 0.15s ease;
  color: transparent;
  margin-top: 1px;
}

.diag-check-item.checked .diag-check-box {
  background: var(--vermilion);
  border-color: var(--vermilion);
  color: var(--white);
}

.diag-check-text {
  flex: 1;
  line-height: 1.5;
}

/* Radio groups */
.diag-radio-group {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(170px, 1fr));
  gap: 8px;
  margin-bottom: 1.75rem;
}

.diag-radio-item {
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  font-size: 14px;
  color: var(--ink);
  text-align: center;
  transition: all 0.15s ease;
}

.diag-radio-item:hover {
  border-color: var(--gray-light);
  background: var(--paleblue);
}

.diag-radio-item.selected {
  border: 1.5px solid var(--indigo);
  background: var(--paleblue);
  color: var(--indigo);
  font-weight: 500;
}

/* Buttons */
.diag-actions {
  display: flex;
  justify-content: space-between;
  gap: 12px;
}

.diag-btn {
  padding: 12px 24px;
  border-radius: var(--radius-md);
  border: 1px solid var(--gray-light);
  background: var(--white);
  color: var(--ink);
  font-size: 14px;
  font-weight: 500;
  transition: all 0.15s ease;
}

.diag-btn:hover {
  background: var(--paper);
  border-color: var(--gray);
}

.diag-btn-primary {
  background: var(--ink);
  color: var(--white);
  border-color: var(--ink);
}

.diag-btn-primary:hover:not(:disabled) {
  background: #111827;
}

.diag-btn-primary:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

/* ============================================================
   Result screen
   ============================================================ */

.diag-result-banner {
  background: var(--ink);
  color: var(--white);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  margin-bottom: 1.75rem;
  position: relative;
  overflow: hidden;
}

.diag-result-banner::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--vermilion);
}

.diag-result-eyebrow {
  font-size: 11px;
  letter-spacing: 0.2em;
  color: #CADCFC;
  margin-bottom: 0.5rem;
  font-weight: 500;
}

.diag-result-title {
  font-family: var(--font-serif);
  font-size: 26px;
  font-weight: 500;
  line-height: 1.35;
  margin-bottom: 0.5rem;
}

.diag-result-sub {
  font-size: 13px;
  color: #CADCFC;
  line-height: 1.7;
}

.diag-summary-line {
  font-size: 12.5px;
  color: var(--gray);
  padding: 0.875rem 1rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 1.5rem;
  line-height: 1.7;
}

.diag-summary-line strong {
  color: var(--ink);
  font-weight: 500;
  margin-right: 0.5rem;
}

.diag-section {
  margin-bottom: 1.75rem;
}

.diag-section-label {
  font-size: 11px;
  color: var(--gray);
  letter-spacing: 0.15em;
  font-weight: 500;
  margin-bottom: 0.625rem;
  text-transform: uppercase;
}

.diag-recommend-card {
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  padding: 1.125rem 1.375rem;
  margin-bottom: 0.75rem;
  position: relative;
  overflow: hidden;
}

.diag-recommend-card::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 3px;
}

.diag-recommend-card.primary::before { background: var(--vermilion); }
.diag-recommend-card.secondary::before { background: var(--indigo); }

.diag-rec-header {
  margin-bottom: 0.375rem;
}

.diag-rec-num {
  font-size: 11px;
  color: var(--vermilion);
  letter-spacing: 0.15em;
  font-weight: 500;
}

.diag-recommend-card.secondary .diag-rec-num { color: var(--indigo); }

.diag-rec-title {
  font-family: var(--font-serif);
  font-size: 18px;
  font-weight: 500;
  color: var(--ink);
  margin-bottom: 0.5rem;
  margin-top: 0.25rem;
}

.diag-rec-body {
  font-size: 13px;
  color: var(--gray);
  line-height: 1.7;
  margin-bottom: 0.5rem;
}

.diag-rec-meta {
  font-size: 12.5px;
  color: var(--vermilion);
  font-weight: 500;
}

.diag-recommend-card.secondary .diag-rec-meta { color: var(--indigo); }

/* Stats grid */
.diag-stats {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.diag-stat {
  background: var(--paleblue);
  border-radius: var(--radius-md);
  padding: 16px 10px;
  text-align: center;
}

.diag-stat.warm { background: var(--palered); }

.diag-stat-label {
  font-size: 10px;
  color: var(--gray);
  letter-spacing: 0.1em;
  margin-bottom: 0.25rem;
  font-weight: 500;
}

.diag-stat-num {
  font-family: var(--font-serif);
  font-size: 22px;
  font-weight: 500;
  color: var(--indigo);
  line-height: 1.2;
}

.diag-stat.warm .diag-stat-num { color: var(--vermilion); }

/* Case cards */
.diag-case-card {
  display: flex;
  gap: 14px;
  padding: 14px 16px;
  background: var(--white);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  margin-bottom: 8px;
}

.diag-case-card.industry-highlight {
  background: var(--paleblue);
  border-color: var(--indigo-soft);
}

.diag-case-num {
  flex-shrink: 0;
  min-width: 50px;
  font-family: var(--font-serif);
  font-size: 14px;
  font-weight: 500;
  color: var(--vermilion);
  line-height: 1.5;
}

.diag-case-card.industry-highlight .diag-case-num {
  color: var(--indigo);
  font-size: 18px;
}

.diag-case-body {
  flex: 1;
  font-size: 13px;
  line-height: 1.6;
}

.diag-case-title {
  color: var(--ink);
  font-weight: 500;
  margin-bottom: 0.125rem;
}

.diag-case-meta {
  color: var(--gray);
  font-size: 11.5px;
}

/* CTA band */
.diag-cta-band {
  background: var(--ink);
  color: var(--white);
  padding: 1.75rem;
  border-radius: var(--radius-lg);
  text-align: center;
  margin-top: 1.75rem;
  position: relative;
  overflow: hidden;
}

.diag-cta-band::before {
  content: '';
  position: absolute;
  left: 0; top: 0; bottom: 0;
  width: 4px;
  background: var(--vermilion);
}

.diag-cta-headline {
  font-family: var(--font-serif);
  font-size: 20px;
  font-weight: 500;
  margin-bottom: 0.5rem;
  line-height: 1.4;
}

.diag-cta-sub {
  font-size: 12.5px;
  color: #CADCFC;
  margin-bottom: 1.25rem;
  line-height: 1.7;
}

.diag-cta-btn {
  display: inline-block;
  padding: 14px 32px;
  background: var(--vermilion);
  color: var(--white);
  border: none;
  border-radius: var(--radius-md);
  font-size: 14px;
  font-weight: 500;
  text-decoration: none;
  transition: background 0.15s ease;
}

.diag-cta-btn:hover {
  background: #8A2820;
}

.diag-cta-secondary {
  display: block;
  margin-top: 0.75rem;
  font-size: 11.5px;
  color: #CADCFC;
}

.diag-cta-secondary a {
  color: #CADCFC;
  text-decoration: underline;
}

.diag-restart {
  display: block;
  margin: 1.5rem auto 0;
  padding: 8px 18px;
  background: transparent;
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  color: var(--gray);
  font-size: 12px;
}

.diag-restart:hover {
  background: var(--paper);
}

/* ============================================================
   Trust section
   ============================================================ */

.trust-section {
  padding: 2rem 0 1rem;
  border-top: 1px solid var(--border);
}

.trust-title {
  font-family: var(--font-serif);
  font-size: 16px;
  font-weight: 500;
  color: var(--gray);
  margin-bottom: 1.25rem;
  letter-spacing: 0.05em;
}

.trust-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 12px;
  margin-bottom: 1.5rem;
}

.trust-item {
  text-align: center;
  padding: 1.25rem 0.5rem;
  background: var(--paper);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
}

.trust-num {
  font-family: var(--font-serif);
  font-size: 32px;
  font-weight: 500;
  color: var(--indigo);
  line-height: 1;
  margin-bottom: 0.5rem;
}

.trust-unit {
  font-size: 16px;
  color: var(--gray);
  margin-left: 2px;
}

.trust-label {
  font-size: 11.5px;
  color: var(--gray);
  line-height: 1.5;
}

.trust-note {
  font-size: 11.5px;
  color: var(--gray);
  line-height: 1.7;
  text-align: center;
  font-style: italic;
}

/* ============================================================
   Responsive
   ============================================================ */

@media (max-width: 480px) {
  .page-main {
    padding: 1.75rem 1rem 1rem;
  }

  .hero-title {
    font-size: 22px;
  }

  .hero-lead {
    font-size: 13px;
  }

  .diag-question {
    font-size: 16px;
  }

  .diag-result-title {
    font-size: 22px;
  }

  .diag-radio-group {
    grid-template-columns: 1fr 1fr;
  }

  .diag-stats {
    grid-template-columns: 1fr;
  }

  .diag-stat {
    padding: 12px;
    display: flex;
    align-items: center;
    justify-content: space-between;
    text-align: left;
  }

  .diag-stat-label {
    margin-bottom: 0;
  }

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

  .trust-item {
    display: flex;
    align-items: center;
    gap: 1rem;
    padding: 1rem;
    text-align: left;
  }

  .trust-num {
    font-size: 24px;
    margin-bottom: 0;
    flex-shrink: 0;
    min-width: 60px;
  }

  .header-inner, .footer-inner {
    padding-left: 1rem;
    padding-right: 1rem;
  }

  .brand {
    font-size: 11px;
  }
}

/* Print */
@media print {
  .page-header, .page-footer, .diag-actions, .diag-progress, .diag-restart, .diag-cta-band {
    display: none;
  }
  body {
    background: white;
  }
}