/* ============================================================
    プロジェクトアーカイブテンプレート 共通CSS
    Modern Simple Design - Black, White, Gray
   ============================================================ */

@import url('https://fonts.googleapis.com/css2?family=Noto+Sans+JP:wght@300;400;500;700;900&family=Inter:wght@400;500;600;700;800&display=swap');

/* --- CSS Variables --- */
:root {
  --black: #000000;
  --gray-900: #111111;
  --gray-800: #1a1a1a;
  --gray-700: #333333;
  --gray-600: #555555;
  --gray-500: #777777;
  --gray-400: #999999;
  --gray-300: #cccccc;
  --gray-200: #e5e5e5;
  --gray-100: #f5f5f5;
  --white: #ffffff;
  --text: var(--gray-900);
  --text-light: var(--gray-600);
  --text-muted: var(--gray-400);
  --bg: var(--white);
  --bg-gray: var(--gray-100);
  --border: var(--gray-200);
  --border-dark: var(--gray-300);
  --font-ja: 'Noto Sans JP', sans-serif;
  --font-en: 'Inter', sans-serif;
  --sidebar-width: 280px;
}

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

html { font-size: 16px; scroll-behavior: smooth; }

body {
  font-family: var(--font-ja);
  color: var(--text);
  background: var(--bg-gray);
  line-height: 1.8;
  -webkit-font-smoothing: antialiased;
}

img { max-width: 100%; height: auto; }
a { color: var(--gray-700); text-decoration: none; transition: color 0.2s; }
a:hover { color: var(--black); }

/* --- Layout --- */
.page-wrapper {
  display: flex;
  min-height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--black);
  color: var(--white);
  overflow-y: auto;
  z-index: 100;
  display: flex;
  flex-direction: column;
}

.sidebar-header {
  padding: 32px 24px;
  border-bottom: 1px solid var(--gray-800);
}

.sidebar-header .logo {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 600;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 8px;
}

.sidebar-header .project-name {
  font-size: 14px;
  font-weight: 700;
  line-height: 1.5;
  color: var(--white);
}

.sidebar-nav {
  flex: 1;
  padding: 24px 0;
}

.sidebar-nav .nav-group {
  margin-bottom: 16px;
}

.sidebar-nav .nav-group-title {
  font-size: 10px;
  font-weight: 700;
  letter-spacing: 2px;
  text-transform: uppercase;
  color: var(--gray-500);
  padding: 8px 24px 8px;
}

.sidebar-nav a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 24px;
  color: var(--gray-400);
  font-size: 13px;
  font-weight: 500;
  transition: all 0.15s;
  border-left: 2px solid transparent;
}

.sidebar-nav a:hover {
  color: var(--white);
  background: var(--gray-900);
}

.sidebar-nav a.active {
  color: var(--white);
  background: var(--gray-900);
  border-left-color: var(--white);
}

.sidebar-nav .nav-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  background: var(--gray-800);
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
}

.sidebar-footer {
  padding: 20px 24px;
  border-top: 1px solid var(--gray-800);
  font-size: 11px;
  color: var(--gray-600);
}

/* --- Main Content --- */
.main-content {
  flex: 1;
  margin-left: var(--sidebar-width);
  min-width: 0;
}

/* --- Document Header --- */
.doc-header {
  background: var(--white);
  border-bottom: 1px solid var(--border);
  padding: 40px 56px;
}

.doc-header .doc-category {
  font-family: var(--font-en);
  font-size: 11px;
  font-weight: 700;
  letter-spacing: 3px;
  text-transform: uppercase;
  color: var(--gray-500);
  margin-bottom: 12px;
}

.doc-header .doc-title {
  font-size: 32px;
  font-weight: 900;
  line-height: 1.2;
  color: var(--black);
  margin-bottom: 16px;
  letter-spacing: -0.5px;
}

.doc-header .doc-meta {
  display: flex;
  gap: 32px;
  font-size: 13px;
  color: var(--text-light);
}

.doc-header .doc-meta span {
  display: flex;
  align-items: center;
  gap: 8px;
}

/* --- Document Body --- */
.doc-body {
  padding: 48px 56px 96px;
  max-width: 960px;
}

/* --- Section --- */
.section {
  margin-bottom: 56px;
}

.section-title {
  font-size: 20px;
  font-weight: 900;
  color: var(--black);
  margin-bottom: 24px;
  padding-bottom: 12px;
  border-bottom: 2px solid var(--black);
  display: flex;
  align-items: center;
  gap: 12px;
  letter-spacing: -0.3px;
}

.section-title .section-icon {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  background: var(--black);
  color: var(--white);
  font-size: 16px;
  flex-shrink: 0;
}

.subsection {
  margin-bottom: 36px;
}

.subsection-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--text);
  margin-bottom: 16px;
  padding-left: 16px;
  border-left: 3px solid var(--black);
}

/* --- Fill Block (Template Input Area) --- */
.fill-block {
  background: var(--white);
  border: 1px dashed var(--gray-300);
  padding: 24px;
  margin-bottom: 24px;
  transition: border-color 0.2s;
}

.fill-block:hover {
  border-color: var(--gray-500);
}

.fill-block.completed {
  border-style: solid;
  border-color: var(--gray-700);
  background: var(--gray-100);
}

.fill-label {
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.fill-label .required {
  font-size: 10px;
  font-weight: 700;
  color: var(--white);
  background: var(--black);
  padding: 2px 8px;
}

.fill-label .optional {
  font-size: 10px;
  font-weight: 700;
  color: var(--white);
  background: var(--gray-500);
  padding: 2px 8px;
}

.fill-hint {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
  line-height: 1.6;
}

.fill-content {
  background: var(--gray-100);
  border: 1px solid var(--border);
  padding: 16px 20px;
  min-height: 48px;
  font-size: 14px;
  line-height: 1.7;
  color: var(--text-muted);
}

.fill-content p {
  margin-bottom: 8px;
}

.fill-content p:last-child {
  margin-bottom: 0;
}

.ascii-diagram {
  overflow-x: auto;
}

.ascii-diagram pre {
  font-family: 'Courier New', Courier, monospace;
  white-space: pre;
  font-size: 13px;
  line-height: 1.4;
  margin: 0;
  overflow-x: auto;
}

.code-block {
  overflow-x: auto;
}

.code-block pre {
  font-family: 'Courier New', Courier, monospace;
  white-space: pre;
  font-size: 13px;
  line-height: 1.6;
  margin: 0;
  overflow-x: auto;
}

.code-block .comment {
  color: #6a9955;
}

.code-block .keyword {
  color: #569cd6;
  font-weight: bold;
}

/* --- Prompt Box (Gemini Style) --- */
.prompt-box {
  background: linear-gradient(135deg, #4285F4 0%, #9B72CB 50%, #D96570 100%);
  border: none;
  padding: 24px;
  margin-top: 16px;
  font-size: 13px;
  color: white;
}

.prompt-box .prompt-title {
  font-weight: 700;
  color: white;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  letter-spacing: 1px;
  text-transform: uppercase;
}

.prompt-box .prompt-text {
  background: rgba(0, 0, 0, 0.35);
  border: none;
  padding: 18px 20px;
  font-size: 13px;
  color: white;
  line-height: 1.8;
  white-space: pre-wrap;
  margin-top: 8px;
  cursor: pointer;
  transition: background 0.2s;
}

.prompt-box .prompt-text:hover {
  background: rgba(0, 0, 0, 0.45);
}

.prompt-box .prompt-note {
  font-size: 12px;
  color: rgba(255, 255, 255, 0.8);
  margin-top: 12px;
}

/* --- Table --- */
.doc-table {
  width: 100%;
  border-collapse: collapse;
  font-size: 14px;
  margin-bottom: 24px;
  background: var(--white);
  border: 1px solid var(--border);
}

.doc-table thead th {
  background: var(--black);
  color: var(--white);
  font-weight: 700;
  padding: 14px 20px;
  text-align: left;
  font-size: 13px;
}

.doc-table tbody td {
  padding: 14px 20px;
  border-bottom: 1px solid var(--border);
  vertical-align: top;
}

.doc-table tbody tr:last-child td {
  border-bottom: none;
}

.doc-table tbody tr:hover {
  background: var(--gray-100);
}

/* template row */
.doc-table .template-row td {
  color: var(--text-muted);
  font-style: italic;
}

/* --- Status Badge --- */
.badge {
  display: inline-flex;
  align-items: center;
  padding: 4px 12px;
  font-size: 11px;
  font-weight: 700;
}

.badge-must { background: var(--black); color: var(--white); }
.badge-should { background: var(--gray-600); color: var(--white); }
.badge-could { background: var(--gray-300); color: var(--gray-700); }

/* --- Card Grid --- */
.card-grid {
  display: grid;
  grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  gap: 24px;
  margin-bottom: 24px;
}

.card {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px;
  transition: border-color 0.2s, transform 0.2s;
}

.card:hover {
  border-color: var(--gray-500);
  transform: translateY(-2px);
}

.card-title {
  font-size: 16px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 10px;
}

.card-text {
  font-size: 13px;
  color: var(--text-light);
  line-height: 1.7;
}

/* --- Info Box --- */
.info-box {
  padding: 20px 24px;
  margin-bottom: 24px;
  font-size: 14px;
  border-left: 3px solid var(--black);
  background: var(--gray-100);
}

.info-box.info { border-left-color: var(--gray-700); }
.info-box.success { border-left-color: var(--gray-500); background: var(--gray-100); }
.info-box.warning { border-left-color: var(--gray-400); background: var(--gray-100); }
.info-box.danger { border-left-color: var(--black); background: var(--gray-100); }

.info-box strong {
  display: block;
  margin-bottom: 6px;
}

/* --- External Link Box (fill-block style) --- */
.external-link-box {
  background: var(--white);
  border: 1px dashed var(--gray-300);
  padding: 24px;
  margin-bottom: 24px;
  transition: border-color 0.2s;
}

.external-link-box:hover {
  border-color: var(--gray-500);
}

.external-link-box .external-link-box-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 4px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.external-link-box .external-link-box-title .material-symbols-outlined {
  font-size: 18px;
  color: var(--gray-500);
}

.external-link-box .external-link-box-desc {
  font-size: 13px;
  color: var(--text-light);
  margin-bottom: 12px;
  line-height: 1.6;
}

.external-link-box .external-link-input {
  display: inline-flex;
  align-items: stretch;
}

.external-link-box .external-link-input input {
  font-size: 13px;
  color: var(--text-muted);
  font-family: var(--font-en);
  background: var(--gray-100);
  border: 1px solid var(--border);
  padding: 0 14px;
  height: 40px;
  min-width: 280px;
  outline: none;
}

.external-link-box .external-link-input input:focus {
  border-color: var(--gray-400);
}

.external-link-box .link-btn {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  background: var(--black);
  color: var(--white);
  padding: 0 16px;
  height: 40px;
  font-size: 13px;
  font-weight: 600;
  text-decoration: none;
  transition: background 0.2s;
  white-space: nowrap;
  margin-left: -1px;
}

.external-link-box .link-btn:hover {
  background: var(--gray-700);
  color: var(--white);
}

.external-link-box .link-btn .material-symbols-outlined {
  font-size: 16px;
}

/* --- Flow Chart --- */
.flow-chart {
  display: flex;
  align-items: center;
  gap: 12px;
  flex-wrap: wrap;
  margin-bottom: 24px;
}

.flow-step {
  background: var(--black);
  color: var(--white);
  padding: 10px 24px;
  font-size: 13px;
  font-weight: 700;
  white-space: nowrap;
}

.flow-arrow {
  color: var(--gray-400);
  font-size: 18px;
}

/* --- Progress --- */
.progress-bar {
  display: flex;
  gap: 4px;
  margin-bottom: 28px;
}

.progress-step {
  flex: 1;
  height: 4px;
  background: var(--gray-200);
}

.progress-step.done {
  background: var(--black);
}

.progress-step.current {
  background: var(--gray-500);
}

/* --- TOC (Table of Contents) --- */
.toc {
  background: var(--white);
  border: 1px solid var(--border);
  padding: 28px;
  margin-bottom: 36px;
}

.toc-title {
  font-size: 14px;
  font-weight: 700;
  color: var(--black);
  margin-bottom: 16px;
}

.toc-list {
  list-style: none;
  counter-reset: toc-counter;
}

.toc-list li {
  counter-increment: toc-counter;
}

.toc-list li a {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 8px 0;
  color: var(--text);
  font-size: 14px;
  border-bottom: 1px solid var(--gray-100);
  transition: color 0.2s;
}

.toc-list li a:hover {
  color: var(--black);
}

.toc-list li a::before {
  content: counter(toc-counter, decimal-leading-zero);
  font-family: var(--font-en);
  font-size: 12px;
  font-weight: 700;
  color: var(--gray-500);
  width: 28px;
  flex-shrink: 0;
}

/* --- Hamburger (mobile) --- */
.hamburger {
  display: none;
  position: fixed;
  top: 16px;
  left: 16px;
  z-index: 200;
  width: 48px;
  height: 48px;
  background: var(--black);
  border: none;
  cursor: pointer;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 6px;
}

.hamburger span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--white);
  transition: all 0.3s;
}

/* --- Icon --- */
.icon-sm {
  font-size: 18px;
}

/* --- Responsive --- */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 260px;
  }
  .doc-header, .doc-body {
    padding-left: 36px;
    padding-right: 36px;
  }
}

@media (max-width: 768px) {
  .hamburger {
    display: flex;
  }

  .sidebar {
    transform: translateX(-100%);
    transition: transform 0.3s;
  }

  .sidebar.open {
    transform: translateX(0);
  }

  .main-content {
    margin-left: 0;
  }

  .doc-header {
    padding: 28px 24px;
    padding-top: 80px;
  }

  .doc-header .doc-title {
    font-size: 24px;
  }

  .doc-body {
    padding: 28px 24px 72px;
  }

  .doc-header .doc-meta {
    flex-direction: column;
    gap: 6px;
  }

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

  .flow-chart {
    flex-direction: column;
    align-items: flex-start;
  }

  .flow-arrow {
    transform: rotate(90deg);
  }
}

/* --- Print --- */
@media print {
  .sidebar, .hamburger { display: none !important; }
  .main-content { margin-left: 0 !important; }
  .prompt-box { break-inside: avoid; }
  .fill-block { break-inside: avoid; border-style: solid; }
  .doc-header { border-bottom: 2px solid #000; }
}