.companion-page {
  --companion-bg: #f5f5f0;
  --companion-card-bg: #ffffff;
  --companion-text: #2c2c2c;
  --companion-text-secondary: #6b6b6b;
  --companion-text-muted: #999999;
  --companion-border: #e8e8e4;
  --companion-accent: #4a7c6f;
  --companion-accent-light: #e8f2ef;
  --companion-accent-hover: #3a6659;
  --companion-shadow-sm: 0 1px 3px rgba(0, 0, 0, 0.04);
  --companion-shadow-md: 0 4px 16px rgba(0, 0, 0, 0.06);
  --companion-shadow-lg: 0 8px 32px rgba(0, 0, 0, 0.08);
  --companion-radius-sm: 10px;
  --companion-radius: 16px;
  --companion-radius-lg: 20px;
  --companion-transition: 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}

body {
  height: 100vh;
  overflow: hidden;
}

#app {
  width: min(1160px, calc(100% - 40px));
  margin: 0 auto;
  height: 100vh;
  display: flex;
  flex-direction: column;
  position: relative;
}

.companion-nav-inner {
  padding: 0 4px;
}

.nav-subtitle {
  font-size: 12px;
  color: var(--companion-text-muted);
  font-weight: 500;
}

.nav-btn {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--companion-text-secondary);
  transition: all var(--companion-transition);
  font-size: 18px;
  flex-shrink: 0;
  text-decoration: none;
}

.nav-btn:hover {
  background: #f3f3f3;
  color: var(--companion-text);
}

.card-grid-wrapper {
  flex: 1;
  overflow-y: auto;
  padding: 20px 20px 24px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  scroll-behavior: smooth;
}
.card-grid-wrapper::-webkit-scrollbar {
  width: 0;
}
.hero-note {
  padding: 18px;
  border-radius: 20px;
  background: linear-gradient(135deg, #eef7f3, #fffaf0);
  border: 1px solid var(--companion-border);
  color: var(--companion-text-secondary);
  line-height: 1.65;
  font-size: 13px;
}
.hero-note strong {
  display: block;
  margin-bottom: 6px;
  color: var(--companion-text);
  font-size: 17px;
  line-height: 1.35;
}
.section-label {
  font-size: 13px;
  font-weight: 600;
  color: var(--companion-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.04em;
  margin-bottom: 2px;
}

.section-label-upcoming {
  margin-top: 6px;
}

.companion-card {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 15px 16px;
  background: var(--companion-card-bg);
  border: 1px solid var(--companion-border);
  border-radius: var(--companion-radius);
  cursor: pointer;
  transition: all var(--companion-transition);
  user-select: none;
  -webkit-tap-highlight-color: transparent;
  animation: cardIn 0.4s ease-out both;
}
@keyframes cardIn {
  from { opacity: 0; transform: translateY(12px); }
  to { opacity: 1; transform: translateY(0); }
}
.companion-card:hover {
  border-color: #d0d0cc;
  box-shadow: var(--companion-shadow-md);
  transform: translateY(-1px);
}
.companion-card:active {
  transform: scale(0.985);
  transition: transform 0.1s ease;
}
.companion-card.active-card {
  border-color: var(--companion-accent);
  box-shadow: 0 0 0 3px var(--companion-accent-light);
  background: #fafdfb;
}
.companion-card .avatar {
  width: 52px;
  height: 52px;
  border-radius: 50%;
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  color: #fff;
  position: relative;
}
.companion-card .avatar .status-dot {
  position: absolute;
  bottom: 1px;
  right: 1px;
  width: 11px;
  height: 11px;
  border-radius: 50%;
  border: 2px solid #fff;
  background: #9ea6b3;
}
.companion-card .avatar .status-dot--online {
  background: #5cc9a7;
}
.companion-card .avatar .status-dot--offline {
  background: #f27777;
}
.companion-card .avatar .status-dot--checking {
  background: #f0b55a;
  animation: statusPulse 1.2s ease-in-out infinite;
}
@keyframes statusPulse {
  0%, 100% { transform: scale(1); opacity: 1; }
  50% { transform: scale(1.15); opacity: 0.7; }
}
.companion-card .info {
  flex: 1;
  min-width: 0;
}
.companion-card .info .name-row {
  display: flex;
  align-items: center;
  gap: 8px;
  flex-wrap: wrap;
}
.companion-card .info .name {
  font-weight: 600;
  font-size: 15px;
  color: var(--companion-text);
  letter-spacing: -0.01em;
}
.recommended-badge {
  display: inline-flex;
  align-items: center;
  height: 20px;
  padding: 0 8px;
  border-radius: 999px;
  font-size: 10.5px;
  font-weight: 600;
  color: #2e6f5a;
  background: #e6f6ee;
  border: 1px solid #b7e6d1;
}
.companion-card--recommended {
  border-color: #9fcfbb;
  box-shadow: 0 0 0 2px rgba(74, 124, 111, 0.12);
}
.companion-card--recommended:hover {
  border-color: #7fb6a0;
}
.companion-card .info .desc {
  font-size: 12.5px;
  color: var(--companion-text-secondary);
  margin-top: 2px;
}
.companion-card .info .status-text {
  font-size: 11px;
  margin-top: 4px;
  color: var(--companion-text-muted);
}
.companion-card .info .tags {
  display: flex;
  gap: 6px;
  margin-top: 6px;
  flex-wrap: wrap;
}
.companion-card .info .tag {
  font-size: 10.5px;
  padding: 3px 9px;
  border-radius: 20px;
  background: #f3f3f0;
  color: var(--companion-text-secondary);
  font-weight: 500;
}
.companion-card .arrow-icon {
  color: #c5c5c0;
  font-size: 16px;
  flex-shrink: 0;
  transition: all var(--companion-transition);
}
.companion-card:hover .arrow-icon {
  color: var(--companion-accent);
  transform: translateX(2px);
}

.chat-view {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
  min-height: 0;
}
.chat-header {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 14px 18px;
  border-bottom: 1px solid var(--companion-border);
  background: var(--companion-card-bg);
  min-height: 56px;
  flex-shrink: 0;
}
.chat-header .back-btn {
  width: 34px;
  height: 34px;
  border-radius: 50%;
  border: none;
  background: transparent;
  cursor: pointer;
  font-size: 18px;
  color: var(--companion-text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--companion-transition);
  flex-shrink: 0;
}
.chat-header .back-btn:hover {
  background: #f3f3f3;
  color: var(--companion-text);
}
.chat-header .chat-avatar {
  width: 40px;
  height: 40px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 20px;
  color: #fff;
  flex-shrink: 0;
}
.chat-header .chat-name {
  font-weight: 600;
  font-size: 15px;
  color: var(--companion-text);
}
.chat-header .chat-status {
  font-size: 11px;
  color: #5cc9a7;
  font-weight: 500;
}
.chat-actions {
  display: flex;
  gap: 8px;
}
.chat-actions .nav-btn {
  font-size: 15px;
}

.iframe-container {
  flex: 1;
  position: relative;
  background: #fafaf7;
  overflow: hidden;
  min-height: 0;
}
.iframe-container iframe {
  width: 100%;
  height: 100%;
  border: none;
  display: block;
  background: #ffffff;
}
.loading-placeholder {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  background: #fafaf7;
  color: var(--companion-text-muted);
  font-size: 14px;
  z-index: 2;
  transition: opacity 0.3s ease;
  pointer-events: none;
}
.loading-placeholder.hidden {
  opacity: 0;
}
.chat-error-card {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  justify-content: center;
  align-items: center;
  text-align: center;
  padding: 24px;
  color: var(--companion-text-secondary);
  background: #fafaf7;
  z-index: 1;
}
.chat-error-title {
  font-size: 18px;
  font-weight: 600;
  color: var(--companion-text);
}
.chat-error-body {
  margin-top: 10px;
  font-size: 13px;
  color: #d06767;
  max-width: 620px;
  word-break: break-word;
}
.chat-error-hint {
  margin-top: 10px;
  font-size: 12px;
  color: var(--companion-text-muted);
}
.spinner {
  width: 28px;
  height: 28px;
  border: 3px solid #e8e8e4;
  border-top: 3px solid var(--companion-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin-bottom: 10px;
}

.fade-slide-enter-active,
.fade-slide-leave-active {
  transition: all 0.35s cubic-bezier(0.4, 0, 0.2, 1);
}
.fade-slide-enter-from { opacity: 0; transform: translateY(18px); }
.fade-slide-leave-to { opacity: 0; transform: translateY(-12px); }
.fade-enter-active,
.fade-leave-active { transition: opacity 0.3s ease; }
.fade-enter-from,
.fade-leave-to { opacity: 0; }

.about-overlay {
  position: absolute;
  inset: 0;
  background: rgba(0,0,0,0.25);
  z-index: 20;
  display: flex;
  align-items: flex-end;
  justify-content: center;
  padding: 20px;
}
.about-card {
  background: #fff;
  border-radius: 20px;
  padding: 24px;
  max-width: 340px;
  width: 100%;
  text-align: center;
  box-shadow: 0 8px 40px rgba(0,0,0,0.12);
}

.chat-meta {
  flex: 1;
  min-width: 0;
}

.about-title {
  font-weight: 650;
  font-size: 16px;
  margin-bottom: 8px;
}

.about-desc {
  font-size: 13px;
  color: #6b6b6b;
  line-height: 1.6;
}

.about-close-btn {
  margin-top: 16px;
  padding: 10px 28px;
  border-radius: 20px;
  border: none;
  background: var(--companion-accent);
  color: #fff;
  cursor: pointer;
  font-size: 14px;
  font-weight: 500;
}

@media (min-width: 768px) {
  .card-grid-wrapper {
    display: grid;
    grid-template-columns: 1fr 1fr;
    gap: 16px;
    align-content: start;
    padding: 24px 28px 28px;
  }

  .card-grid-wrapper .section-label,
  .card-grid-wrapper .hero-note {
    grid-column: 1 / -1;
  }

  .companion-card {
    padding: 18px 20px;
    flex-direction: row;
  }

  .companion-card--wide {
    grid-column: 1 / -1;
  }

  .chat-header {
    padding: 16px 24px;
  }

  .about-overlay {
    align-items: center;
    padding: 32px;
  }

  .about-card {
    max-width: 540px;
    padding: 36px 40px;
    border-radius: 24px;
  }

  .about-title {
    font-size: 24px;
    margin-bottom: 12px;
  }

  .about-desc {
    font-size: 16px;
    line-height: 1.8;
  }

  .about-close-btn {
    margin-top: 22px;
    min-height: 48px;
    padding: 0 34px;
    font-size: 16px;
  }
}


:root[data-theme="dark"] .companion-page {
  --companion-bg: #131c19;
  --companion-card-bg: #1a2622;
  --companion-text: #e8f0ec;
  --companion-text-secondary: #a9bbb3;
  --companion-text-muted: #8ea39a;
  --companion-border: #2d3d37;
  --companion-accent: #67a88f;
  --companion-accent-light: rgba(103, 168, 143, 0.2);
}

:root[data-theme="dark"] .nav-btn:hover,
:root[data-theme="dark"] .chat-header .back-btn:hover {
  background: #24332e;
}

:root[data-theme="dark"] .hero-note,
:root[data-theme="dark"] .iframe-container,
:root[data-theme="dark"] .loading-placeholder,
:root[data-theme="dark"] .about-card {
  background: #1a2622;
}

:root[data-theme="dark"] .companion-card.active-card {
  background: #1f2d28;
}

:root[data-theme="dark"] .companion-card .info .tag {
  background: #25352f;
}

:root[data-theme="dark"] .recommended-badge {
  color: #b6e8d6;
  background: #28453a;
  border-color: #3d6a59;
}

:root[data-theme="dark"] .companion-card--recommended {
  border-color: #4f7f6e;
  box-shadow: 0 0 0 2px rgba(103, 168, 143, 0.2);
}

:root[data-theme="dark"] .about-desc {
  color: var(--companion-text-secondary);
}