/* === Base Styles === */
:root {
  --color-primary: #2563eb;
  --color-primary-dark: #1d4ed8;
  --color-secondary: #64748b;
  --color-success: #10b981;
  --color-warning: #f59e0b;
  --color-danger: #ef4444;
  --color-bg: #f8fafc;
  --color-card: #ffffff;
  --color-text: #1e293b;
  --color-text-light: #64748b;
  --color-border: #e2e8f0;
  --radius: 8px;
  --shadow: 0 1px 3px rgba(0,0,0,0.1);
  --shadow-lg: 0 4px 6px rgba(0,0,0,0.1);
}

/* === Preview Banner === */
.preview-banner {
  background: linear-gradient(135deg, #f59e0b 0%, #d97706 100%);
  color: white;
  padding: 0.75rem 0;
  text-align: center;
  font-weight: 500;
}

.preview-banner .container {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 1rem;
  flex-wrap: wrap;
}

.preview-badge {
  background: white;
  color: #d97706;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.75rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.05em;
}

.preview-message {
  font-size: 0.875rem;
}

.tentative-badge {
  font-size: 0.75rem;
  font-weight: normal;
  color: var(--color-text-light);
  margin-left: 0.25rem;
}

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

body {
  font-family: -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, "Hiragino Sans", "Noto Sans JP", sans-serif;
  font-size: 16px;
  line-height: 1.6;
  color: var(--color-text);
  background: var(--color-bg);
}

.container {
  max-width: 1200px;
  margin: 0 auto;
  padding: 0 1rem;
}

/* === Header === */
.header {
  background: var(--color-card);
  border-bottom: 1px solid var(--color-border);
  padding: 1rem 0;
  position: sticky;
  top: 0;
  z-index: 100;
  z-index: 100;
}

.site-title {
  font-size: 1.5rem;
  font-weight: 700;
}

.site-title a {
  color: var(--color-primary);
  text-decoration: none;
}

.site-subtitle {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

.nav {
  margin-top: 1rem;
  display: flex;
  gap: 1rem;
}

.nav-link {
  color: var(--color-text);
  text-decoration: none;
  padding: 0.5rem 1rem;
  border-radius: var(--radius);
  transition: background 0.2s;
}

.nav-link:hover,
.nav-link.active {
  background: var(--color-primary);
  color: white;
}

/* === Main === */
.main {
  padding: 2rem 0;
  min-height: calc(100vh - 200px);
}

/* === Hero === */
.hero {
  text-align: center;
  padding: 3rem 0;
}

.hero h1 {
  font-size: 3rem;
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

.hero h1 .tentative-badge {
  font-size: 1rem;
  vertical-align: middle;
}

.hero-subtitle {
  font-size: 1.25rem;
  color: var(--color-text-light);
  margin-bottom: 1rem;
}

.hero-description {
  font-size: 1.125rem;
  margin-bottom: 1.5rem;
}

.feedback-callout {
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
  border: 2px solid var(--color-primary);
  border-radius: var(--radius);
  padding: 1.25rem 1.5rem;
  margin-bottom: 2rem;
  max-width: 600px;
  margin-left: auto;
  margin-right: auto;
}

.feedback-callout p {
  margin: 0;
  color: var(--color-primary-dark);
  font-size: 0.9375rem;
  line-height: 1.7;
}

/* === Buttons === */
.btn {
  display: inline-block;
  padding: 0.75rem 1.5rem;
  font-size: 1rem;
  font-weight: 600;
  text-decoration: none;
  border-radius: var(--radius);
  border: 2px solid transparent;
  cursor: pointer;
  transition: all 0.2s;
}

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

.btn-primary:hover {
  background: var(--color-primary-dark);
}

.btn-secondary {
  background: var(--color-secondary);
  color: white;
}

.btn-outline {
  background: transparent;
  border-color: var(--color-primary);
  color: var(--color-primary);
}

.btn-outline:hover {
  background: var(--color-primary);
  color: white;
}

/* === Features === */
.features {
  padding: 3rem 0;
}

.features h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(280px, 1fr));
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-card h3 {
  color: var(--color-primary);
  margin-bottom: 0.5rem;
}

/* === Categories Overview === */
.categories-overview {
  padding: 3rem 0;
}

.categories-overview h2 {
  text-align: center;
  margin-bottom: 2rem;
}

.category-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(200px, 1fr));
  gap: 1rem;
}

.category-card {
  background: var(--color-card);
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border-left: 4px solid var(--color-primary);
}

.category-card h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.category-card p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.item-count {
  font-size: 0.75rem;
  background: var(--color-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
}

/* === Input Page === */
.input-page {
  max-width: 900px;
  margin: 0 auto;
}

.input-page.with-sidebar {
  max-width: 1200px;
  display: grid;
  grid-template-columns: 1fr 260px;
  gap: 2rem;
  align-items: start;
}

.input-page.with-sidebar .input-main {
  order: 1;
}

.input-page.with-sidebar .sidebar-legend {
  order: 2;
}

.input-main {
  min-width: 0;
}

.sidebar-legend {
  position: sticky;
  top: 160px;
  max-height: calc(100vh - 180px);
  overflow-y: auto;
  align-self: flex-start;
}

.sidebar-legend .legend-content {
  background: var(--color-card);
  padding: 1rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
  font-size: 0.8125rem;
}

.sidebar-legend .legend-title {
  font-size: 1rem;
  margin: 0 0 0.75rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-primary);
  color: var(--color-primary);
}

.sidebar-legend .legend-description {
  font-size: 0.75rem;
  color: var(--color-text);
  line-height: 1.6;
  margin: 0 0 1rem;
  padding: 0.75rem;
  background: #f0f9ff;
  border-radius: var(--radius);
  border-left: 3px solid var(--color-primary);
}

.sidebar-legend .legend-block {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.sidebar-legend .legend-block:last-child {
  margin-bottom: 0;
  padding-bottom: 0;
  border-bottom: none;
}

.sidebar-legend .legend-block-title {
  font-weight: 700;
  font-size: 0.8125rem;
  margin-bottom: 0.5rem;
  color: var(--color-text);
}

.sidebar-legend .legend-block-content {
  display: flex;
  flex-wrap: wrap;
  gap: 0.375rem;
}

.sidebar-legend .legend-block-content.levels {
  flex-direction: column;
  gap: 0.25rem;
}

.sidebar-legend .legend-tag {
  background: var(--color-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  color: var(--color-text-light);
}

.sidebar-legend .level-item {
  display: flex;
  align-items: center;
  gap: 0.375rem;
  font-size: 0.75rem;
}

.sidebar-legend .level-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 1.25rem;
  height: 1.25rem;
  background: var(--color-primary);
  color: white;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 700;
}

.sidebar-legend .interest-desc {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.5rem;
  width: 100%;
}

.sidebar-legend .interest-desc span:last-child {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.sidebar-legend .interest-examples {
  width: 100%;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
  padding: 0.5rem;
  background: var(--color-bg);
  border-radius: var(--radius);
}

.sidebar-legend .interest-example {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  font-size: 0.6875rem;
}

.sidebar-legend .interest-example .arrow {
  color: var(--color-text-light);
}

.sidebar-legend .interest-example .meaning {
  color: var(--color-primary);
  font-weight: 600;
}

/* Company Legend Styles */
.sidebar-legend .req-desc {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  width: 100%;
  margin-bottom: 0.375rem;
}

.sidebar-legend .req-desc:last-child {
  margin-bottom: 0;
}

.sidebar-legend .req-desc span:last-child {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.legend-btn-sample.required {
  background: #ef4444;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
}

.legend-btn-sample.welcome {
  background: #f59e0b;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
}

.legend-btn-sample.task {
  background: #8b5cf6;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
}

.legend-btn-sample.inexperienced {
  background: #10b981;
  color: white;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 600;
}

.sidebar-legend .legend-sub-hint {
  font-size: 0.6875rem;
  color: var(--color-text-light);
  margin: 0.375rem 0 0;
  font-style: italic;
}

.sidebar-legend .legend-note-box {
  background: #fef3c7;
  padding: 0.75rem;
  border-radius: var(--radius);
  border-left: 3px solid #f59e0b;
}

.sidebar-legend .legend-note-box strong {
  display: block;
  font-size: 0.75rem;
  margin-bottom: 0.375rem;
}

.sidebar-legend .legend-note-box p {
  font-size: 0.6875rem;
  color: var(--color-text);
  margin: 0;
  line-height: 1.5;
}

/* Level Type Blocks in Legend - スクロール連動表示 */
.sidebar-legend .level-types {
  border-bottom: none;
  padding-bottom: 0;
}

.sidebar-legend .level-type-block {
  display: none;  /* デフォルトは非表示 */
  background: var(--color-bg);
  padding: 0.75rem;
  border-radius: var(--radius);
  margin-bottom: 0.75rem;
  border-left: 3px solid var(--color-border);
  transition: all 0.3s ease;
}

.sidebar-legend .level-type-block:last-child {
  margin-bottom: 0;
}

.sidebar-legend .level-type-block.active {
  display: block;  /* アクティブなものだけ表示 */
}

/* アクティブ時の強調表示 */
.sidebar-legend .level-type-block[data-level-type="tech"].active {
  border-left-color: #3b82f6;
  background: linear-gradient(135deg, #eff6ff 0%, #dbeafe 100%);
}

.sidebar-legend .level-type-block[data-level-type="operation"].active {
  border-left-color: #8b5cf6;
  background: linear-gradient(135deg, #f5f3ff 0%, #ede9fe 100%);
}

.sidebar-legend .level-type-block[data-level-type="management"].active {
  border-left-color: #ec4899;
  background: linear-gradient(135deg, #fdf2f8 0%, #fce7f3 100%);
}

.sidebar-legend .level-type-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  margin-bottom: 0.375rem;
}

.sidebar-legend .level-type-name {
  font-weight: 600;
  font-size: 0.75rem;
  color: var(--color-text);
}

.sidebar-legend .level-type-desc {
  font-size: 0.6875rem;
  color: var(--color-text-light);
  margin: 0 0 0.5rem 0;
  line-height: 1.4;
}

.sidebar-legend .level-type-block .level-item {
  padding: 0.125rem 0;
  cursor: help;
}

.sidebar-legend .level-type-block .level-item:hover {
  background: rgba(255,255,255,0.5);
}

/* 展開可能なレベル項目 */
.sidebar-legend .level-item-expandable {
  border-bottom: 1px solid rgba(0,0,0,0.05);
  margin-bottom: 0.25rem;
  padding-bottom: 0.25rem;
}

.sidebar-legend .level-item-expandable:last-child {
  border-bottom: none;
  margin-bottom: 0;
  padding-bottom: 0;
}

.sidebar-legend .level-item-header {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  padding: 0.25rem 0;
  cursor: pointer;
  border-radius: 4px;
  transition: background 0.15s ease;
}

.sidebar-legend .level-item-header:hover {
  background: rgba(255,255,255,0.5);
}

.sidebar-legend .level-item-header .level-label {
  flex: 1;
  font-size: 0.75rem;
}

.sidebar-legend .level-item-header .level-toggle {
  font-size: 0.625rem;
  color: var(--color-text-light);
  transition: transform 0.2s ease;
}

.sidebar-legend .level-item-expandable.expanded .level-toggle {
  transform: rotate(90deg);
}

.sidebar-legend .level-item-detail {
  display: none;
  padding: 0.5rem;
  margin: 0.25rem 0;
  background: rgba(255,255,255,0.7);
  border-radius: 6px;
  font-size: 0.6875rem;
  line-height: 1.5;
}

.sidebar-legend .level-item-expandable.expanded .level-item-detail {
  display: block;
}

.sidebar-legend .level-description {
  color: var(--color-text);
  margin: 0 0 0.5rem 0;
  font-weight: 500;
}

.sidebar-legend .level-examples {
  color: var(--color-text-light);
}

.sidebar-legend .level-examples .examples-title {
  display: block;
  font-weight: 600;
  color: var(--color-text);
  margin-bottom: 0.25rem;
  font-size: 0.625rem;
}

.sidebar-legend .level-examples ul {
  margin: 0;
  padding-left: 1rem;
}

.sidebar-legend .level-examples li {
  margin-bottom: 0.25rem;
}

.sidebar-legend .level-examples li:last-child {
  margin-bottom: 0;
}

.sidebar-legend .legend-note {
  font-size: 0.6875rem;
  color: var(--color-text-light);
  margin-top: 0.5rem;
  font-style: italic;
}

@media (max-width: 1024px) {
  .input-page.with-sidebar {
    grid-template-columns: 1fr;
  }

  .sidebar-legend {
    position: relative;
    top: 0;
    max-height: none;
    order: -1;
  }

  .sidebar-legend .legend-content {
    display: flex;
    flex-wrap: wrap;
    gap: 1rem;
    align-items: flex-start;
  }

  .sidebar-legend h3 {
    width: 100%;
  }

  .sidebar-legend .legend-section {
    margin-bottom: 0;
  }

  .sidebar-legend .legend-examples {
    margin-top: 0;
    padding-top: 0;
    border-top: none;
  }
}

/* Input Tabs */
.input-tabs {
  display: flex;
  gap: 0;
  margin-bottom: 2rem;
  border-bottom: 2px solid var(--color-border);
}

.input-tab {
  padding: 1rem 2rem;
  text-decoration: none;
  color: var(--color-text-light);
  font-weight: 600;
  border-bottom: 3px solid transparent;
  margin-bottom: -2px;
  transition: all 0.2s;
}

.input-tab:hover {
  color: var(--color-primary);
}

.input-tab.active {
  color: var(--color-primary);
  border-bottom-color: var(--color-primary);
}

.input-description {
  color: var(--color-text-light);
  margin-bottom: 2rem;
}

.level-legend {
  background: var(--color-card);
  padding: 1rem 1.5rem;
  border-radius: var(--radius);
  margin-bottom: 2rem;
  box-shadow: var(--shadow);
  border: 1px solid var(--color-border);
}

.level-legend h3 {
  font-size: 1rem;
  margin-bottom: 0.5rem;
}

.legend-hint {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  margin: 0.5rem 0 0;
  font-style: italic;
}

.level-legend ul {
  list-style: none;
  font-size: 0.875rem;
}

.level-legend li {
  margin-bottom: 0.25rem;
}

/* === Category Section === */
.category-section {
  background: var(--color-card);
  border-radius: var(--radius);
  margin-bottom: 1rem;
  box-shadow: var(--shadow);
  overflow: hidden;
}

.category-title {
  padding: 1rem 1.5rem;
  background: var(--color-primary);
  color: white;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 1.125rem;
}

.category-title:hover {
  background: var(--color-primary-dark);
}

.toggle-icon {
  font-size: 0.75rem;
  transition: transform 0.2s;
}

.category-section.collapsed .toggle-icon {
  transform: rotate(-90deg);
}

.category-description {
  font-size: 0.875rem;
  font-weight: normal;
  opacity: 0.9;
  margin-left: auto;
}

/* === Level Type Badge === */
.level-type-badge {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.6875rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.02em;
}

.level-type-badge.tech {
  background: #3b82f6;
  color: white;
}

.level-type-badge.operation {
  background: #8b5cf6;
  color: white;
}

.level-type-badge.management {
  background: #ec4899;
  color: white;
}

/* Category title badge */
.category-title .level-type-badge {
  margin-left: 0.5rem;
  font-size: 0.625rem;
}

/* Skill item level type badge (for overrides) */
.skill-info .level-type-badge.small {
  font-size: 0.5625rem;
  padding: 0.125rem 0.375rem;
  margin-left: 0.375rem;
  vertical-align: middle;
}

.category-items {
  padding: 1rem;
}

.category-section.collapsed .category-items {
  display: none;
}

/* === Skill Item === */
.skill-item {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem;
  border-bottom: 1px solid var(--color-border);
  gap: 1rem;
  background: var(--color-bg);
  opacity: 0.6;
  transition: all 0.2s;
}

.skill-item.has-input {
  background: white;
  opacity: 1;
}

.skill-item:last-child {
  border-bottom: none;
}

.skill-info {
  flex: 1;
}

.skill-name {
  font-weight: 600;
  display: block;
  margin-bottom: 0.25rem;
}

.skill-id {
  font-size: 0.75rem;
  color: var(--color-text-light);
  background: var(--color-bg);
  padding: 0.125rem 0.375rem;
  border-radius: 4px;
  margin-left: 0.5rem;
}

.skill-description {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-top: 0.25rem;
}

/* === Interest Button === */
.interest-buttons {
  display: flex;
  margin-right: 0.75rem;
}

.interest-btn {
  padding: 0.375rem 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: white;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  color: #0369a1;
}

.interest-btn:hover {
  border-color: #7dd3fc;
  background: #f0f9ff;
}

.interest-btn.active {
  background: #0ea5e9;
  border-color: #0ea5e9;
  color: white;
}

/* === Skill Years === */
.skill-years {
  margin-left: 0.5rem;
}

.skill-years select {
  padding: 0.375rem 0.5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-size: 0.75rem;
  background: white;
  cursor: pointer;
}

.skill-years select:focus {
  outline: none;
  border-color: var(--color-primary);
}

/* === Skill Level === */
.skill-level {
  display: flex;
  gap: 0.25rem;
}

.level-option {
  cursor: pointer;
}

.level-option input {
  display: none;
}

.level-label {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  font-weight: 600;
  transition: all 0.2s;
}

.level-option input:checked + .level-label {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.level-option:hover .level-label {
  border-color: var(--color-primary);
}

/* === Form Actions === */
.form-actions {
  display: flex;
  gap: 1rem;
  justify-content: center;
  padding: 2rem 0;
  position: sticky;
  bottom: 0;
  background: var(--color-bg);
  border-top: 1px solid var(--color-border);
}

/* === Modal === */
.modal {
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  bottom: 0;
  background: rgba(0,0,0,0.5);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 1000;
}

.modal-content {
  background: var(--color-card);
  padding: 2rem;
  border-radius: var(--radius);
  max-width: 600px;
  width: 90%;
  max-height: 80vh;
  overflow-y: auto;
}

.modal-content h2 {
  margin-bottom: 1rem;
}

.modal-actions {
  display: flex;
  gap: 1rem;
  justify-content: flex-end;
  margin-top: 1.5rem;
}

#preview-content {
  background: var(--color-bg);
  padding: 1rem;
  border-radius: var(--radius);
  font-family: monospace;
  font-size: 0.875rem;
  white-space: pre-wrap;
}

/* === Company Input Page === */
.legend-row {
  display: flex;
  flex-wrap: wrap;
  gap: 2rem;
  font-size: 0.875rem;
}

.legend-group {
  display: flex;
  flex-wrap: wrap;
  align-items: center;
  gap: 0.75rem;
}

.legend-group strong {
  margin-right: 0.25rem;
}

.legend-section {
  margin-bottom: 0.75rem;
}

.legend-btn-sample {
  display: inline-block;
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-right: 0.5rem;
}

.legend-btn-sample.small {
  padding: 0.125rem 0.375rem;
  font-size: 0.6875rem;
}

.legend-btn-sample.interest {
  background: #0ea5e9;
  color: white;
}

.legend-examples {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--color-border);
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.legend-example {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-size: 0.8125rem;
}

.example-label {
  display: flex;
  align-items: center;
  gap: 0.25rem;
  min-width: 180px;
}

.example-meaning {
  color: var(--color-text-light);
}

@media (max-width: 768px) {
  .legend-example {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.25rem;
  }
  
  .example-label {
    min-width: auto;
  }
}

.legend-note {
  margin-top: 0.75rem;
  padding-top: 0.75rem;
  border-top: 1px dashed var(--color-border);
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

.req-badge-inline {
  display: inline-block;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
  font-size: 0.75rem;
  font-weight: 600;
  margin-right: 0.25rem;
}

.req-badge-inline.req-required {
  background: #fee2e2;
  color: #991b1b;
}

.req-badge-inline.req-welcome {
  background: #fef3c7;
  color: #92400e;
}

/* Skill Controls - 統一レイアウト */
.skill-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.req-buttons {
  display: flex;
  gap: 0.25rem;
}

.req-btn {
  padding: 0.375rem 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: white;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
}

.req-btn-required {
  color: #991b1b;
}

.req-btn-required:hover {
  border-color: #fca5a5;
  background: #fef2f2;
}

.req-btn-required.active {
  background: #ef4444;
  border-color: #ef4444;
  color: white;
}

.req-btn-welcome {
  color: #92400e;
}

.req-btn-welcome:hover {
  border-color: #fcd34d;
  background: #fefce8;
}

.req-btn-welcome.active {
  background: #f59e0b;
  border-color: #f59e0b;
  color: white;
}

/* Task Button */
.task-buttons {
  display: flex;
  margin-right: 0.5rem;
}

.task-btn {
  padding: 0.375rem 0.75rem;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  background: white;
  font-size: 0.75rem;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s;
  color: #7c3aed;
}

.task-btn:hover {
  border-color: #c4b5fd;
  background: #f5f3ff;
}

.task-btn.active {
  background: #8b5cf6;
  border-color: #8b5cf6;
  color: white;
}

/* Inexperienced OK Button */
.req-btn-inexperienced {
  color: #059669;
}

.req-btn-inexperienced:hover {
  border-color: #6ee7b7;
  background: #ecfdf5;
}

.req-btn-inexperienced.active {
  background: #10b981;
  border-color: #10b981;
  color: white;
}

@media (max-width: 768px) {
  .legend-row {
    flex-direction: column;
    gap: 1rem;
  }

  .skill-controls {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.5rem;
  }
}

/* === Footer === */
.footer {
  background: var(--color-card);
  border-top: 1px solid var(--color-border);
  padding: 1.5rem 0;
  text-align: center;
  color: var(--color-text-light);
  font-size: 0.875rem;
}

/* === About Page === */
.about-page {
  max-width: 900px;
  margin: 0 auto;
}

.about-hero {
  text-align: center;
  padding: 2rem 0 3rem;
}

.about-hero h1 {
  font-size: 2.5rem;
  color: var(--color-primary);
  margin-bottom: 1rem;
}

.about-lead {
  font-size: 1.25rem;
  color: var(--color-text-light);
  line-height: 1.8;
}

.about-section {
  margin-bottom: 3rem;
}

.about-section h2 {
  font-size: 1.5rem;
  color: var(--color-text);
  margin-bottom: 1.5rem;
  padding-bottom: 0.5rem;
  border-bottom: 3px solid var(--color-primary);
  display: inline-block;
}

.section-description {
  color: var(--color-text-light);
  margin-bottom: 1.5rem;
}

/* Problem Cards */
.problem-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(250px, 1fr));
  gap: 1.5rem;
}

.problem-card {
  background: var(--color-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  text-align: center;
}

.problem-icon {
  font-size: 2.5rem;
  margin-bottom: 1rem;
}

.problem-card h3 {
  font-size: 1.125rem;
  margin-bottom: 0.75rem;
  color: var(--color-text);
}

.problem-card p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  line-height: 1.6;
}

/* Solution Box */
.solution-box {
  background: linear-gradient(135deg, #dbeafe 0%, #e0e7ff 100%);
  border-left: 4px solid var(--color-primary);
  padding: 2rem;
  border-radius: var(--radius);
  text-align: center;
}

.solution-box p {
  font-size: 1.125rem;
  line-height: 1.8;
  margin: 0;
}

.solution-box .highlight {
  background: var(--color-primary);
  color: white;
  padding: 0.125rem 0.5rem;
  border-radius: 4px;
}

/* Category List */
.category-list {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.category-item {
  display: flex;
  align-items: flex-start;
  gap: 1rem;
  background: var(--color-card);
  padding: 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.category-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-primary);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  flex-shrink: 0;
}

.category-content h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.category-content p {
  font-size: 0.875rem;
  color: var(--color-text-light);
  margin-bottom: 0.5rem;
}

.category-content .item-count {
  font-size: 0.75rem;
  background: var(--color-bg);
  padding: 0.25rem 0.5rem;
  border-radius: 4px;
  color: var(--color-text-light);
}

/* Level Table */
.level-table {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
}

.level-row {
  display: flex;
  align-items: center;
  gap: 1rem;
  background: var(--color-card);
  padding: 1rem 1.25rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.level-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 2.5rem;
  height: 2.5rem;
  background: var(--color-primary);
  color: white;
  border-radius: var(--radius);
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.level-info {
  display: flex;
  flex-direction: column;
}

.level-name {
  font-weight: 600;
  font-size: 1rem;
}

.level-desc {
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* Usage Steps */
.usage-steps {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.usage-step {
  display: flex;
  align-items: flex-start;
  gap: 1.25rem;
  background: var(--color-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.step-number {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 3rem;
  height: 3rem;
  background: linear-gradient(135deg, var(--color-primary) 0%, var(--color-primary-dark) 100%);
  color: white;
  border-radius: 50%;
  font-weight: 700;
  font-size: 1.25rem;
  flex-shrink: 0;
}

.step-content h3 {
  font-size: 1.125rem;
  margin-bottom: 0.25rem;
}

.step-content p {
  font-size: 0.9375rem;
  color: var(--color-text-light);
  margin: 0;
}

.step-content a {
  color: var(--color-primary);
}

/* Feedback Section */
.feedback-section {
  background: linear-gradient(135deg, #fef3c7 0%, #fde68a 100%);
  padding: 2rem;
  border-radius: var(--radius);
  border: 2px solid var(--color-warning);
}

.feedback-section h2 {
  border-bottom-color: var(--color-warning);
}

.feedback-list {
  list-style: none;
  padding: 0;
  margin: 1rem 0 0;
}

.feedback-list li {
  padding: 0.5rem 0 0.5rem 1.5rem;
  position: relative;
}

.feedback-list li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-warning);
  font-weight: bold;
}

/* About CTA */
.about-cta {
  text-align: center;
  padding: 2rem 0;
}

.btn-large {
  padding: 1rem 2rem;
  font-size: 1.125rem;
}

/* === Features Grid (実現すること) === */
.features-grid {
  display: flex;
  flex-direction: column;
  gap: 1.5rem;
}

.feature-card {
  background: var(--color-card);
  padding: 1.5rem;
  border-radius: var(--radius);
  box-shadow: var(--shadow);
}

.feature-icon {
  font-size: 2rem;
  margin-bottom: 0.75rem;
}

.feature-card h3 {
  font-size: 1.25rem;
  color: var(--color-text);
  margin-bottom: 1rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--color-border);
}

.feature-two-column {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.feature-column h4 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.feature-column ul {
  list-style: none;
  padding: 0;
  margin: 0;
}

.feature-column li {
  padding: 0.5rem 0;
  padding-left: 1.25rem;
  position: relative;
  font-size: 0.9375rem;
  line-height: 1.5;
  color: var(--color-text-light);
}

.feature-column li::before {
  content: "✓";
  position: absolute;
  left: 0;
  color: var(--color-success);
  font-weight: bold;
}

/* Match Types */
.match-types {
  display: flex;
  flex-direction: column;
  gap: 1rem;
}

.match-type {
  background: var(--color-bg);
  padding: 1rem;
  border-radius: var(--radius);
  border-left: 4px solid var(--color-border);
}

.match-type p {
  margin: 0.5rem 0;
  font-size: 0.9375rem;
}

.match-label {
  display: inline-block;
  padding: 0.25rem 0.75rem;
  border-radius: 9999px;
  font-size: 0.8125rem;
  font-weight: 600;
}

.match-label.skill {
  background: #dbeafe;
  color: #1e40af;
}

.match-label.growth {
  background: #d1fae5;
  color: #065f46;
}

.match-label.continue {
  background: #fef3c7;
  color: #92400e;
}

.match-example {
  font-size: 0.8125rem;
  color: var(--color-text-light);
  font-style: italic;
}

/* Axis Comparison */
.axis-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.axis-item {
  background: var(--color-bg);
  padding: 1.25rem;
  border-radius: var(--radius);
}

.axis-item h4 {
  font-size: 1rem;
  margin-bottom: 1rem;
  color: var(--color-primary);
}

.axis-visual {
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  margin-bottom: 1rem;
}

.axis-x, .axis-y {
  display: inline-block;
  padding: 0.375rem 0.75rem;
  background: var(--color-card);
  border-radius: 4px;
  font-size: 0.875rem;
  font-weight: 500;
}

.axis-x {
  border-left: 3px solid var(--color-primary);
}

.axis-y {
  border-left: 3px solid var(--color-success);
}

.axis-item p {
  margin: 0;
  font-size: 0.875rem;
  color: var(--color-text-light);
}

/* No Experience Comparison */
.noexp-comparison {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 1.5rem;
}

.noexp-item {
  background: var(--color-bg);
  padding: 1.25rem;
  border-radius: var(--radius);
  text-align: center;
}

.noexp-item h4 {
  font-size: 1rem;
  margin-bottom: 0.75rem;
  color: var(--color-primary);
}

.noexp-item p {
  margin: 0 0 0.5rem 0;
  font-size: 1rem;
}

.noexp-item strong {
  color: var(--color-primary);
}

.noexp-hint {
  font-size: 0.8125rem;
  color: var(--color-text-light);
}

/* === Qualifications Section === */
.qualifications-section {
  margin-top: 2rem;
  background: var(--color-card);
  border-radius: var(--radius);
  box-shadow: var(--shadow);
  overflow: hidden;
}

.qualifications-section .section-title {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.5rem;
  margin: 0;
  background: linear-gradient(135deg, #10b981 0%, #059669 100%);
  color: white;
  font-size: 1.25rem;
  cursor: pointer;
}

.qualifications-section .section-description {
  font-size: 0.875rem;
  font-weight: normal;
  opacity: 0.9;
}

.qualifications-content {
  padding: 1rem;
}

.qual-category {
  margin-bottom: 1rem;
}

.qual-category:last-child {
  margin-bottom: 0;
}

.qual-category-title {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.75rem 1rem;
  margin: 0;
  background: var(--color-bg);
  border-radius: var(--radius);
  font-size: 1rem;
  cursor: pointer;
  transition: background-color 0.2s;
}

.qual-category-title:hover {
  background: #e2e8f0;
}

.toggle-icon-small {
  font-size: 0.75rem;
  color: var(--color-text-light);
}

.qual-count {
  margin-left: auto;
  font-size: 0.75rem;
  font-weight: normal;
  color: var(--color-text-light);
  background: white;
  padding: 0.125rem 0.5rem;
  border-radius: 9999px;
}

.qual-items {
  padding: 0.5rem 0 0 0;
}

.qual-item {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 1rem;
  padding: 0.75rem 1rem;
  margin: 0.25rem 0;
  background: var(--color-bg);
  border-radius: var(--radius);
  opacity: 0.6;
  transition: opacity 0.2s, background-color 0.2s;
}

.qual-item.has-input {
  opacity: 1;
  background: white;
  box-shadow: var(--shadow);
}

.qual-info {
  flex: 1;
  min-width: 0;
}

.qual-name {
  font-weight: 500;
  font-size: 0.9375rem;
  display: block;
}

.qual-id {
  font-size: 0.75rem;
  color: var(--color-text-light);
  font-family: monospace;
}

.qual-controls {
  display: flex;
  align-items: center;
  gap: 1rem;
  flex-shrink: 0;
}

.qual-status {
  display: flex;
  gap: 0.5rem;
}

.qual-btn {
  padding: 0.375rem 0.75rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  background: white;
  font-size: 0.8125rem;
  cursor: pointer;
  transition: all 0.2s;
}

.qual-btn:hover {
  border-color: var(--color-text-light);
}

.qual-btn-acquired.active {
  background: var(--color-success);
  border-color: var(--color-success);
  color: white;
}

.qual-btn-studying.active {
  background: var(--color-warning);
  border-color: var(--color-warning);
  color: white;
}

.qual-date input[type="month"] {
  padding: 0.375rem 0.5rem;
  border: 1px solid var(--color-border);
  border-radius: 4px;
  font-size: 0.8125rem;
  background: white;
}

.qual-date input[type="month"]:disabled {
  background: var(--color-bg);
  opacity: 0.5;
}

/* Company Qualification Section */
.company-qual .qual-btn-required.active {
  background: #dc2626;
  border-color: #dc2626;
  color: white;
}

.company-qual .qual-btn-welcome.active {
  background: var(--color-primary);
  border-color: var(--color-primary);
  color: white;
}

.qual-req {
  display: flex;
  gap: 0.5rem;
}

/* === Search Box === */
.search-box {
  margin-bottom: 1rem;
  padding-bottom: 1rem;
  border-bottom: 1px solid var(--color-border);
}

.search-input-wrapper {
  display: flex;
  align-items: center;
  background: white;
  border: 2px solid var(--color-border);
  border-radius: var(--radius);
  padding: 0.5rem 0.75rem;
  transition: border-color 0.2s;
}

.search-input-wrapper:focus-within {
  border-color: var(--color-primary);
}

.search-icon {
  margin-right: 0.5rem;
  font-size: 1rem;
}

.search-input-wrapper input {
  flex: 1;
  border: none;
  outline: none;
  font-size: 0.9375rem;
  background: transparent;
}

.search-input-wrapper input::placeholder {
  color: var(--color-text-light);
}

.search-clear {
  background: none;
  border: none;
  cursor: pointer;
  color: var(--color-text-light);
  font-size: 1rem;
  padding: 0.25rem;
  line-height: 1;
  border-radius: 50%;
  transition: background-color 0.2s;
}

.search-clear:hover {
  background: var(--color-bg);
  color: var(--color-text);
}

.search-results {
  margin-top: 0.5rem;
  padding: 0.5rem 0.75rem;
  background: #dbeafe;
  border-radius: var(--radius);
}

.search-results-count {
  font-size: 0.875rem;
  color: var(--color-primary);
  font-weight: 500;
}

/* Search Match Styles */
.search-hidden {
  display: none !important;
}

.search-match {
  background: #fef9c3 !important;
  opacity: 1 !important;
}

.search-match.has-input {
  background: linear-gradient(135deg, #fef9c3 0%, #fef3c7 100%) !important;
}

/* === Responsive === */
@media (max-width: 768px) {
  .hero h1 {
    font-size: 2rem;
  }

  .skill-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .skill-level {
    margin-top: 0.75rem;
  }

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

  .about-hero h1 {
    font-size: 2rem;
  }

  .about-lead {
    font-size: 1rem;
  }

  .problem-cards {
    grid-template-columns: 1fr;
  }

  .category-item,
  .usage-step {
    flex-direction: column;
    align-items: center;
    text-align: center;
  }

  .feature-two-column,
  .axis-comparison,
  .noexp-comparison {
    grid-template-columns: 1fr;
  }

  .qual-item {
    flex-direction: column;
    align-items: flex-start;
  }

  .qual-controls {
    width: 100%;
    flex-wrap: wrap;
  }
}