/**
 * POSACO Tools User Guide - Styles
 */

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

/* ---- Sidebar (Table of Contents) ---- */
.guide-toc {
  position: fixed;
  top: 0;
  left: 0;
  width: 240px;
  height: 100vh;
  overflow-y: auto;
  background: var(--posaco-color-bg-primary);
  border-right: 1px solid var(--posaco-color-border);
  padding: 1.5rem 0;
  z-index: 100;
}

.toc-header {
  padding: 0 1.25rem 1rem;
  border-bottom: 1px solid var(--posaco-color-border);
  margin-bottom: 0.75rem;
}

.toc-header a {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  font-weight: 600;
  color: var(--posaco-color-primary);
}

.toc-header a:hover {
  text-decoration: none;
  opacity: 0.8;
}

.toc-logo {
  width: 24px;
  height: 24px;
}

.toc-nav {
  list-style: none;
  padding: 0;
  margin: 0;
}

.toc-nav li a {
  display: block;
  padding: 0.4rem 1.25rem;
  font-size: 0.875rem;
  color: var(--posaco-color-text-secondary);
  transition: background var(--posaco-transition-fast), color var(--posaco-transition-fast);
}

.toc-nav li a:hover {
  background: var(--posaco-color-bg-secondary);
  color: var(--posaco-color-primary);
  text-decoration: none;
}

.toc-nav li.toc-section {
  margin-top: 0.75rem;
  padding: 0.25rem 1.25rem;
  font-size: 0.7rem;
  font-weight: 700;
  text-transform: uppercase;
  letter-spacing: 0.08em;
  color: var(--posaco-color-text-muted);
}

/* ---- Main Content ---- */
.guide-main {
  margin-left: 240px;
  flex: 1;
  max-width: 860px;
  padding: 2rem 2.5rem 4rem;
}

.guide-hero {
  text-align: center;
  padding: 2rem 0 2.5rem;
  border-bottom: 1px solid var(--posaco-color-border);
  margin-bottom: 2.5rem;
}

.guide-hero h1 {
  font-size: 1.75rem;
  margin-bottom: 0.5rem;
}

.guide-hero p {
  color: var(--posaco-color-text-secondary);
  margin-bottom: 0;
}

/* Sections */
.guide-section {
  margin-bottom: 3rem;
  scroll-margin-top: 1.5rem;
}

.guide-section h2 {
  font-size: 1.35rem;
  padding-bottom: 0.5rem;
  border-bottom: 2px solid var(--posaco-color-primary);
  margin-bottom: 1.25rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.guide-section h3 {
  font-size: 1.1rem;
  margin: 1.5rem 0 0.75rem;
  color: var(--posaco-color-text-primary);
}

/* Screenshots */
.guide-img {
  border: 1px solid var(--posaco-color-border);
  border-radius: var(--posaco-radius-md);
  box-shadow: var(--posaco-shadow-sm);
  margin: 1rem 0 1.5rem;
}

.guide-img-caption {
  font-size: 0.85rem;
  color: var(--posaco-color-text-muted);
  text-align: center;
  margin-top: -0.75rem;
  margin-bottom: 1.5rem;
}

/* Feature Cards */
.feature-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 1rem;
  margin: 1rem 0 1.5rem;
}

.feature-card {
  background: var(--posaco-color-bg-primary);
  border: 1px solid var(--posaco-color-border);
  border-radius: var(--posaco-radius-md);
  padding: 1rem 1.25rem;
}

.feature-card h4 {
  font-size: 0.95rem;
  margin-bottom: 0.35rem;
  color: var(--posaco-color-primary);
}

.feature-card p {
  font-size: 0.875rem;
  color: var(--posaco-color-text-secondary);
  margin-bottom: 0;
}

/* Tables */
.guide-table {
  width: 100%;
  border-collapse: collapse;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}

.guide-table th,
.guide-table td {
  padding: 0.6rem 1rem;
  text-align: left;
  border-bottom: 1px solid var(--posaco-color-border);
}

.guide-table th {
  background: var(--posaco-color-bg-secondary);
  font-weight: 600;
  font-size: 0.85rem;
  color: var(--posaco-color-text-secondary);
}

.guide-table tbody tr:hover {
  background: var(--posaco-color-bg-secondary);
}

/* Tips */
.tip {
  background: var(--posaco-color-bg-accent);
  border-left: 4px solid var(--posaco-color-primary);
  border-radius: 0 var(--posaco-radius-sm) var(--posaco-radius-sm) 0;
  padding: 0.75rem 1rem;
  margin: 1rem 0 1.5rem;
  font-size: 0.9rem;
}

.tip strong {
  color: var(--posaco-color-primary);
}

/* Chart tool cards on top */
.chart-cards {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(160px, 1fr));
  gap: 0.75rem;
  margin: 1rem 0 1.5rem;
}

.chart-card-link {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.35rem;
  padding: 0.75rem;
  background: var(--posaco-color-bg-primary);
  border: 1px solid var(--posaco-color-border);
  border-radius: var(--posaco-radius-md);
  text-align: center;
  transition: border-color var(--posaco-transition-fast), box-shadow var(--posaco-transition-fast);
}

.chart-card-link:hover {
  border-color: var(--posaco-color-primary);
  box-shadow: var(--posaco-shadow-glow);
  text-decoration: none;
}

.chart-card-link i {
  font-size: 1.5rem;
  color: var(--posaco-color-primary);
}

.chart-card-link span {
  font-size: 0.85rem;
  font-weight: 500;
}

/* Keyboard shortcut badge */
kbd {
  display: inline-block;
  padding: 0.15em 0.4em;
  font-family: var(--posaco-font-family);
  font-size: 0.8em;
  background: var(--posaco-color-bg-secondary);
  border: 1px solid var(--posaco-color-border);
  border-radius: 3px;
}

/* Back-to-top */
.back-to-top {
  position: fixed;
  bottom: 1.5rem;
  right: 1.5rem;
  width: 40px;
  height: 40px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--posaco-color-primary);
  color: #fff;
  border-radius: 50%;
  text-decoration: none;
  box-shadow: var(--posaco-shadow-md);
  opacity: 0.8;
  transition: opacity var(--posaco-transition-fast);
}

.back-to-top:hover {
  opacity: 1;
  text-decoration: none;
}

/* Sample Data */
.sample-data {
  background: var(--posaco-color-bg-secondary);
  border: 1px solid var(--posaco-color-border);
  border-radius: var(--posaco-radius-sm);
  padding: 0.75rem 1rem;
  margin: 1rem 0 1.5rem;
  font-family: 'Consolas', 'Monaco', monospace;
  font-size: 0.85rem;
  line-height: 1.6;
  overflow-x: auto;
  white-space: pre;
  -moz-tab-size: 12;
  tab-size: 12;
  cursor: text;
  user-select: all;
}

.sample-data-label {
  font-size: 0.8rem;
  color: var(--posaco-color-text-muted);
  margin-bottom: 0.25rem;
}

.sample-data-group {
  display: flex;
  gap: 24px;
  flex-wrap: wrap;
}

.sample-data-group-label {
  font-weight: 600;
  font-size: 13px;
  margin: 0 0 4px;
}

/* Footer */
.guide-footer {
  margin-top: 3rem;
  padding-top: 1.5rem;
  border-top: 1px solid var(--posaco-color-border);
  font-size: 0.8rem;
  color: var(--posaco-color-text-muted);
  text-align: right;
}

/* ---- Responsive ---- */
@media (max-width: 900px) {
  .guide-toc {
    display: none;
  }
  .guide-main {
    margin-left: 0;
    padding: 1.5rem 1rem 3rem;
  }
}

/* ---- Auth Banner ---- */
.guide-auth-banner {
  background: #fff3cd;
  border: 1px solid #ffc107;
  border-radius: 8px;
  padding: 12px 16px;
  margin-bottom: 1.5rem;
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 0.9rem;
  color: #856404;
}

.guide-auth-banner i {
  font-size: 1.1rem;
  flex-shrink: 0;
}

/* ---- Disabled Tool Links ---- */
.chart-card-link.disabled {
  opacity: 0.4;
  cursor: not-allowed;
  pointer-events: none;
}