/**
 * ksp-nav.css
 * KSP.PAGE Semantic Navigation Styles
 * PC/SPレスポンシブ対応、Font Awesome 6.x使用
 */

/* ===== Variables ===== */
:root {
  --ksp-knowledge: #52a9ff;
  --ksp-syntax: #00ff00;
  --ksp-practice: #ffaa00;
  --eidbo-emotion: #ff5252;
  --eidbo-intention: #52a9ff;
  --eidbo-deployment: #9c27b0;
  --eidbo-behavior: #00ff00;
  --eidbo-outcome: #ffaa00;
  --ksp-bg: #ffffff;
  --ksp-text: #333333;
  --ksp-border: #e0e0e0;
  --ksp-hover: #f5f5f5;
  --ksp-shadow: rgba(0, 0, 0, 0.1);
}

/* ===== Wrapper ===== */
.ksp-semantic-nav-wrapper {
  width: 100%;
  background: var(--ksp-bg);
  border-bottom: 2px solid var(--ksp-border);
  position: sticky;
  top: 0;
  z-index: 1000;
  box-shadow: 0 2px 10px var(--ksp-shadow);
}

.ksp-semantic-nav {
  max-width: 1400px;
  margin: 0 auto;
  padding: 0;
}

/* ===== Navigation ===== */
.ksp-nav-menu {
  position: relative;
}

/* ===== Hamburger (SP Only) ===== */
.ksp-nav-hamburger {
  display: none;
  background: none;
  border: none;
  color: var(--ksp-text);
  font-size: 24px;
  padding: 15px 20px;
  cursor: pointer;
  transition: color 0.3s;
}

.ksp-nav-hamburger:hover {
  color: var(--ksp-knowledge);
}

.ksp-nav-hamburger.active {
  color: var(--ksp-knowledge);
}

/* ===== Main Menu List ===== */
.ksp-nav-list {
  list-style: none;
  margin: 0;
  padding: 0;
  display: flex;
  gap: 0;
}

/* ===== Home Item ===== */
.ksp-nav-item.ksp-home {
  position: relative;
  flex: 0 0 auto;
  min-width: 100px;
}

.ksp-nav-home-link {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 20px;
  background: var(--ksp-bg);
  color: var(--ksp-text);
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  transition: background 0.3s, color 0.3s, transform 0.2s;
  border-right: 1px solid var(--ksp-border);
  min-height: 54px;
  box-sizing: border-box;
}

.ksp-nav-home-link:hover {
  background: var(--ksp-hover);
  color: #52a9ff;
  transform: translateY(-2px);
}

.ksp-nav-home-link i {
  font-size: 18px;
  color: var(--ksp-text);
}

/* ===== About Item ===== */
.ksp-nav-item.ksp-about {
  position: relative;
  flex: 0 0 auto;
  min-width: 100px;
}

.ksp-nav-item.ksp-about .ksp-nav-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 20px;
  background: var(--ksp-bg);
  color: #e67e22;
  text-decoration: none;
  font-size: 16px;
  font-weight: 600;
  transition: background 0.3s, color 0.3s, transform 0.2s;
  border-right: 1px solid var(--ksp-border);
  min-height: 54px;
  box-sizing: border-box;
  cursor: pointer;
}

.ksp-nav-item.ksp-about .ksp-nav-label:hover {
  background: var(--ksp-hover);
  color: #f39c12;
  transform: translateY(-2px);
}

.ksp-nav-item.ksp-about .ksp-nav-label i {
  font-size: 18px;
  color: #e67e22;
}

/* ===== KSP Level Items ===== */
.ksp-nav-item.ksp-level {
  position: relative;
  flex: 1;
}

.ksp-nav-label {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 15px 20px;
  background: var(--ksp-bg);
  border: none;
  color: var(--ksp-color, var(--ksp-text));
  font-size: 16px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.3s, transform 0.2s;
  width: 100%;
  border-right: 1px solid var(--ksp-border);
}

.ksp-nav-label:hover {
  background: var(--ksp-hover);
  transform: translateY(-2px);
}

.ksp-nav-label i.fas:first-child {
  font-size: 18px;
}

.ksp-nav-arrow {
  font-size: 12px;
  transition: transform 0.3s;
  margin-left: auto;
}

.ksp-level.active .ksp-nav-arrow {
  transform: rotate(180deg);
}

/* ===== EIDBO Submenu ===== */
.ksp-nav-submenu.eidbo-level {
  list-style: none;
  margin: 0;
  padding: 0;
  position: absolute;
  top: 100%;
  left: 0;
  min-width: 250px;
  background: #ffffff;
  border: 1px solid var(--ksp-border);
  border-radius: 0 0 8px 8px;
  box-shadow: 0 4px 12px var(--ksp-shadow);
  opacity: 0;
  visibility: hidden;
  transform: translateY(-10px);
  transition: opacity 0.3s, transform 0.3s, visibility 0.3s;
  z-index: 100;
}

.ksp-level.active .ksp-nav-submenu.eidbo-level {
  opacity: 1;
  visibility: visible;
  transform: translateY(0);
}

/* ===== EIDBO Items ===== */
.ksp-nav-item.eidbo-level {
  position: relative;
  border-bottom: 1px solid var(--ksp-border);
}

.ksp-nav-item.eidbo-level:last-child {
  border-bottom: none;
}

.eidbo-nav-label {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 12px 16px;
  background: transparent;
  border: none;
  color: var(--ksp-text);
  font-size: 14px;
  font-weight: 500;
  cursor: pointer;
  transition: background 0.3s, padding-left 0.3s;
  width: 100%;
  text-align: left;
}

.eidbo-nav-label:hover {
  background: var(--ksp-hover);
  padding-left: 20px;
}

.eidbo-nav-label i.fas:first-child {
  font-size: 14px;
  color: var(--eidbo-emotion);
}

.eidbo-nav-label[data-eidbo="Intention"] i.fas:first-child {
  color: var(--eidbo-intention);
}

.eidbo-nav-label[data-eidbo="Deployment"] i.fas:first-child {
  color: var(--eidbo-deployment);
}

.eidbo-nav-label[data-eidbo="Behavior"] i.fas:first-child {
  color: var(--eidbo-behavior);
}

.eidbo-nav-label[data-eidbo="Outcome"] i.fas:first-child {
  color: var(--eidbo-outcome);
}

.eidbo-count {
  margin-left: auto;
  background: var(--ksp-border);
  padding: 2px 8px;
  border-radius: 12px;
  font-size: 11px;
  color: var(--ksp-text);
}

.eidbo-nav-arrow {
  font-size: 10px;
  transition: transform 0.3s;
}

.eidbo-level.active .eidbo-nav-arrow {
  transform: rotate(90deg);
}

/* ===== Post List ===== */
.ksp-nav-posts {
  list-style: none;
  margin: 0;
  padding: 0;
  background: #fafafa;
  border-top: 1px solid var(--ksp-border);
  max-height: 0;
  overflow: hidden;
  transition: max-height 0.4s ease-out;
}

.eidbo-level.active .ksp-nav-posts {
  max-height: 500px;
  overflow-y: auto;
}

.ksp-nav-post-item {
  border-bottom: 1px solid var(--ksp-border);
}

.ksp-nav-post-item:last-child {
  border-bottom: none;
}

.ksp-nav-post-item a {
  display: block;
  padding: 10px 20px 10px 40px;
  color: var(--ksp-text);
  text-decoration: none;
  font-size: 13px;
  line-height: 1.5;
  transition: background 0.3s, color 0.3s, padding-left 0.3s;
}

.ksp-nav-post-item a:hover {
  background: var(--ksp-hover);
  color: var(--ksp-knowledge);
  padding-left: 45px;
}

.ksp-nav-more {
  border-top: 2px solid var(--ksp-border);
}

.ksp-nav-more a {
  font-weight: 600;
  color: var(--ksp-knowledge);
  padding: 12px 20px 12px 40px;
}

.ksp-nav-more a:hover {
  background: var(--ksp-hover);
  padding-left: 45px;
}

/* ===== Error State ===== */
.ksp-nav-error {
  padding: 20px;
  text-align: center;
  color: #ff5252;
}

.ksp-nav-error i {
  font-size: 32px;
  margin-bottom: 10px;
}

.ksp-nav-error p {
  margin: 10px 0 5px;
  font-weight: 600;
}

.ksp-nav-error small {
  color: #999;
  font-size: 12px;
}

/* ===== Responsive: Tablet & Mobile ===== */
@media (max-width: 768px) {
  /* Show hamburger */
  .ksp-nav-hamburger {
    display: block;
  }

  /* Hide menu by default */
  .ksp-nav-list {
    display: none;
    flex-direction: column;
    gap: 0;
    width: 100%;
    position: absolute;
    top: 100%;
    left: 0;
    background: var(--ksp-bg);
    border-top: 1px solid var(--ksp-border);
    box-shadow: 0 4px 12px var(--ksp-shadow);
  }

  .ksp-nav-list.active {
    display: flex;
  }

  /* Home item in mobile */
  .ksp-nav-item.ksp-home {
    min-width: auto;
    width: 100%;
  }

  .ksp-nav-home-link {
    border-right: none;
    border-bottom: 1px solid var(--ksp-border);
    justify-content: flex-start;
    padding: 15px 20px;
    min-height: auto;
  }

  /* About item in mobile */
  .ksp-nav-item.ksp-about {
    min-width: auto;
    width: 100%;
  }

  .ksp-nav-item.ksp-about .ksp-nav-label {
    border-right: none;
    border-bottom: 1px solid var(--ksp-border);
    justify-content: flex-start;
    padding: 15px 20px;
    min-height: auto;
  }

  /* KSP items full width */
  .ksp-nav-item.ksp-level {
    width: 100%;
    border-bottom: 1px solid var(--ksp-border);
  }

  .ksp-nav-label {
    justify-content: flex-start;
    border-right: none;
  }

  /* EIDBO submenu static positioning */
  .ksp-nav-submenu.eidbo-level {
    position: static;
    border: none;
    border-radius: 0;
    box-shadow: none;
    opacity: 1;
    visibility: visible;
    transform: none;
    max-height: 0;
    overflow: hidden;
    transition: max-height 0.4s ease-out;
  }

  .ksp-level.active .ksp-nav-submenu.eidbo-level {
    max-height: 1000px;
  }

  /* Adjust post list max-height for mobile */
  .eidbo-level.active .ksp-nav-posts {
    max-height: 400px;
  }
}

/* ===== Scrollbar Styling ===== */
.ksp-nav-posts::-webkit-scrollbar {
  width: 6px;
}

.ksp-nav-posts::-webkit-scrollbar-track {
  background: #f5f5f5;
}

.ksp-nav-posts::-webkit-scrollbar-thumb {
  background: #cccccc;
  border-radius: 3px;
}

.ksp-nav-posts::-webkit-scrollbar-thumb:hover {
  background: #999999;
}