/* --- SIDEBAR: Demo Guide --- */

/* --- Tab (left edge, mirrors streamlog-tab on right) --- */

.sidebar-tab {
  position: fixed;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  z-index: 90;
  writing-mode: vertical-rl;
  text-orientation: mixed;
  transform: translateY(-50%) rotate(180deg);
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  color: #ffffff;
  background: #333333;
  border: 1px solid #333333;
  border-right: none;
  border-radius: var(--radius-md) 0  0  var(--radius-md);
  padding: var(--space-lg) var(--space-sm);
  cursor: pointer;
  transition: color var(--duration-fast) ease,
              background var(--duration-fast) ease,
              box-shadow var(--duration-fast) ease;
}

.sidebar-tab:hover {
  color: #000000;
  background: #cccccc;
  box-shadow: var(--shadow-md);
}

.sidebar-tab:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: 2px;
}

/* --- Panel --- */

.sidebar-panel {
  position: fixed;
  left: 0;
  top: 64px;
  bottom: 0;
  width: 340px;
  max-width: 85vw;
  z-index: 95;
  background: var(--bg-surface);
  border-right: 1px solid var(--border);
  box-shadow: var(--shadow-lg);
  transform: translateX(-100%);
  transition: transform var(--duration-slow) var(--ease-out);
  overflow-y: auto;
  padding: var(--space-xl) var(--space-lg);
  display: flex;
  flex-direction: column;
}

.sidebar-panel[data-open="true"] {
  transform: translateX(0);
}

/* --- Panel header --- */

.sidebar-panel-header {
  font-family: var(--font-heading);
  font-size: 0.85rem;
  font-weight: 600;
  letter-spacing: 0.08em;
  text-transform: uppercase;
  color: var(--text);
  margin-bottom: var(--space-lg);
  display: flex;
  align-items: center;
  justify-content: space-between;
  flex-shrink: 0;
}

.sidebar-panel-close {
  font-size: 1.25rem;
  color: var(--text-secondary);
  padding: var(--space-xs);
  border-radius: var(--radius-sm);
  background: none;
  border: none;
  cursor: pointer;
  transition: color var(--duration-fast) ease,
              background var(--duration-fast) ease;
}

.sidebar-panel-close:hover {
  color: var(--text);
  background: var(--bg-mid);
}

/* --- Locale switcher --- */

.locale-switcher {
  display: flex;
  gap: var(--space-xs);
  margin-bottom: var(--space-lg);
  flex-shrink: 0;
}

.locale-btn {
  flex: 1;
  font-family: var(--font-heading);
  font-size: 0.78rem;
  font-weight: 600;
  letter-spacing: 0.04em;
  padding: var(--space-sm) var(--space-md);
  border: 1px solid var(--border);
  border-radius: var(--radius-md);
  background: var(--bg-deep);
  color: var(--text-secondary);
  cursor: pointer;
  text-decoration: none;
  text-align: center;
  transition: all var(--duration-fast) ease;
}

.locale-btn:hover {
  color: var(--teal);
  border-color: var(--teal);
  background: var(--teal-soft);
}

.locale-btn[aria-current="page"] {
  background: var(--teal);
  color: var(--text-inverse);
  border-color: var(--teal);
  pointer-events: none;
}

/* --- Accordion list --- */

.demo-accordion {
  flex: 1;
  overflow-y: auto;
  margin: 0;
  padding: 0;
  list-style: none;
}

.demo-accordion-item {
  border-bottom: 1px solid var(--border);
}

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

/* --- Flash highlight --- */

@keyframes demo-flash {
  0%   { background: var(--gold-soft); }
  100% { background: transparent; }
}

.demo-accordion-item[data-flash="true"] {
  animation: demo-flash 1.5s ease-out;
}

/* --- Accordion trigger --- */

.demo-accordion-trigger {
  width: 100%;
  display: flex;
  align-items: center;
  gap: var(--space-sm);
  padding: var(--space-md) var(--space-xs);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  color: var(--text);
  transition: color var(--duration-fast) ease;
}

.demo-accordion-trigger:hover {
  color: var(--teal);
}

.demo-accordion-trigger:focus-visible {
  outline: 2px solid var(--teal);
  outline-offset: -2px;
  border-radius: var(--radius-sm);
}

.demo-accordion-number {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 22px;
  height: 22px;
  border-radius: 50%;
  background: var(--teal-soft);
  color: var(--teal);
  font-family: var(--font-heading);
  font-size: 0.7rem;
  font-weight: 700;
  flex-shrink: 0;
}

.demo-accordion-chevron {
  margin-left: auto;
  flex-shrink: 0;
  width: 16px;
  height: 16px;
  color: var(--text-secondary);
  transition: transform var(--duration-normal) var(--ease-out);
}

.demo-accordion-trigger[aria-expanded="true"] .demo-accordion-chevron {
  transform: rotate(90deg);
}

/* --- Accordion content --- */

.demo-accordion-content {
  overflow: hidden;
  max-height: 0;
  transition: max-height var(--duration-slow) var(--ease-out);
}

.demo-accordion-content[data-expanded="true"] {
  max-height: 600px;
}

.demo-accordion-body {
  padding: 0 var(--space-xs) var(--space-md) calc(22px + var(--space-sm) + var(--space-xs));
}

.demo-accordion-section-label {
  font-family: var(--font-heading);
  font-size: 0.68rem;
  font-weight: 600;
  letter-spacing: 0.1em;
  text-transform: uppercase;
  margin-bottom: var(--space-xs);
}

.demo-accordion-section-label-siso {
  color: var(--teal);
}

.demo-accordion-section-label-react {
  color: var(--gold);
}

.demo-accordion-text {
  font-size: 0.82rem;
  line-height: 1.65;
  color: var(--text-secondary);
  margin-bottom: var(--space-md);
}

.demo-accordion-text:last-child {
  margin-bottom: 0;
}

.demo-accordion-text code {
  font-family: var(--font-mono);
  font-size: 0.78rem;
  background: var(--bg-mid);
  padding: 0.1em 0.35em;
  border-radius: var(--radius-sm);
  color: var(--teal);
}

/* --- Responsive --- */

@media (max-width: 768px) {
  .sidebar-panel {
    width: 85vw;
    max-width: none;
  }

  .sidebar-tab {
    top: unset;
    bottom: var(--space-xl);
    left: var(--space-md);
    transform: none;
    writing-mode: horizontal-tb;
    border-radius: var(--radius-md) var(--radius-md) 0 0;
    border: 1px solid #333333;
    border-bottom: none;
    padding: var(--space-sm) var(--space-md);
  }
}