/* ============================================================
   MEROVANTIX — SIDEBAR / HEADER STYLES
   header.css
   ============================================================ */

/* ============================================================
   SIDEBAR — DESKTOP
   ============================================================ */
.sidebar {
  position: fixed;
  top: 0;
  left: 0;
  width: var(--sidebar-width);
  height: 100vh;
  background: var(--color-surface);
  border-right: 1px solid var(--border-purple);
  z-index: var(--z-sidebar);
  display: flex;
  flex-direction: column;
  overflow: hidden;
  transition: width var(--transition-slow);
  box-shadow: 4px 0 30px rgba(0, 0, 0, 0.4);
}

body.sidebar-collapsed .sidebar {
  width: var(--sidebar-collapsed-width);
}

/* Sidebar glow accent at top */
.sidebar::after {
  content: '';
  position: absolute;
  top: 0;
  left: 0;
  right: 0;
  height: 2px;
  background: var(--grad-purple-amber);
}

/* ============================================================
   SIDEBAR LOGO
   ============================================================ */
.sidebar-logo {
  display: flex;
  align-items: center;
  padding: 1.4rem 1.2rem;
  border-bottom: 1px solid var(--border-subtle);
  min-height: 72px;
  text-decoration: none;
  gap: 0.75rem;
  flex-shrink: 0;
  overflow: hidden;
  white-space: nowrap;
}

.sidebar-logo-icon {
  width: 36px;
  height: 36px;
  border-radius: var(--radius-sm);
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  box-shadow: var(--shadow-purple);
  font-family: 'Orbitron', monospace;
  font-weight: 900;
  font-size: 0.85rem;
  color: #fff;
  letter-spacing: -0.05em;
  object-fit: cover;
}

.sidebar-logo-text {
  font-family: 'Orbitron', monospace;
  font-size: 1rem;
  font-weight: 800;
  letter-spacing: 0.06em;
  color: var(--color-text);
  transition: opacity var(--transition-slow);
}

.sidebar-logo-text span {
  color: var(--color-primary);
}

body.sidebar-collapsed .sidebar-logo-text {
  opacity: 0;
  pointer-events: none;
  width: 0;
}

/* ============================================================
   SIDEBAR NAV
   ============================================================ */
.sidebar-nav {
  flex: 1;
  padding: 1rem 0;
  overflow-y: auto;
  overflow-x: hidden;
}

.sidebar-nav::-webkit-scrollbar {
  width: 3px;
}

.sidebar-nav::-webkit-scrollbar-thumb {
  background: var(--border-purple);
  border-radius: 2px;
}

.sidebar-nav-section {
  margin-bottom: 0.5rem;
}

.sidebar-nav-label {
  font-family: 'Orbitron', monospace;
  font-size: 0.6rem;
  font-weight: 700;
  letter-spacing: 0.18em;
  text-transform: uppercase;
  color: var(--color-text-faint);
  padding: 0.75rem 1.4rem 0.35rem;
  white-space: nowrap;
  overflow: hidden;
  transition: opacity var(--transition-slow);
}

body.sidebar-collapsed .sidebar-nav-label {
  opacity: 0;
}

.sidebar-nav-item {
  display: flex;
  align-items: center;
  gap: 0.85rem;
  padding: 0.7rem 1.2rem;
  margin: 0.15rem 0.6rem;
  border-radius: var(--radius-md);
  color: var(--color-text-muted);
  text-decoration: none;
  font-size: 0.88rem;
  font-weight: 500;
  white-space: nowrap;
  transition: all var(--transition-fast);
  position: relative;
  overflow: hidden;
}

.sidebar-nav-item:hover {
  background: rgba(139, 92, 246, 0.1);
  color: var(--color-text);
  box-shadow: 0 0 15px rgba(139, 92, 246, 0.1);
}

.sidebar-nav-item.active {
  background: rgba(245, 158, 11, 0.12);
  color: var(--color-secondary);
  border: 1px solid rgba(245, 158, 11, 0.25);
}

.sidebar-nav-item.active::before {
  content: '';
  position: absolute;
  left: 0;
  top: 50%;
  transform: translateY(-50%);
  width: 3px;
  height: 60%;
  background: var(--color-secondary);
  border-radius: 0 2px 2px 0;
}

.sidebar-nav-item svg,
.sidebar-nav-item .nav-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  stroke-width: 1.5;
}

.sidebar-nav-item .nav-label {
  transition: opacity var(--transition-slow), transform var(--transition-slow);
  flex: 1;
}

body.sidebar-collapsed .sidebar-nav-item .nav-label {
  opacity: 0;
  pointer-events: none;
  transform: translateX(-8px);
  width: 0;
  flex: 0;
  margin: 0;
  overflow: hidden;
}

/* Tooltip for collapsed state */
body.sidebar-collapsed .sidebar-nav-item {
  justify-content: center;
  padding: 0.7rem 0;
  margin: 0.15rem 0.4rem;
  position: relative;
}

body.sidebar-collapsed .sidebar-nav-item::after {
  content: attr(data-label);
  position: absolute;
  left: calc(var(--sidebar-collapsed-width) + 8px);
  top: 50%;
  transform: translateY(-50%);
  background: var(--color-surface-alt);
  border: 1px solid var(--border-purple);
  color: var(--color-text);
  font-size: 0.8rem;
  padding: 0.35rem 0.75rem;
  border-radius: var(--radius-sm);
  white-space: nowrap;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-fast);
  z-index: 200;
  font-family: 'Space Grotesk', sans-serif;
  font-weight: 500;
  box-shadow: var(--shadow-md);
}

body.sidebar-collapsed .sidebar-nav-item:hover::after {
  opacity: 1;
}

/* ============================================================
   SIDEBAR DIVIDER
   ============================================================ */
.sidebar-divider {
  height: 1px;
  background: var(--border-subtle);
  margin: 0.5rem 1rem;
}

/* ============================================================
   SIDEBAR COLLAPSE BUTTON
   ============================================================ */
.sidebar-collapse-btn {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 1rem 1.2rem;
  border-top: 1px solid var(--border-subtle);
  color: var(--color-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
  font-size: 0.85rem;
  font-weight: 500;
  white-space: nowrap;
  overflow: hidden;
  background: none;
  border-left: none;
  border-right: none;
  border-bottom: none;
  width: 100%;
  text-align: left;
}

.sidebar-collapse-btn:hover {
  background: rgba(139, 92, 246, 0.08);
  color: var(--color-primary);
}

.collapse-icon {
  width: 20px;
  height: 20px;
  flex-shrink: 0;
  transition: transform var(--transition-slow);
}

body.sidebar-collapsed .collapse-icon {
  transform: rotate(180deg);
}

.collapse-label {
  transition: opacity var(--transition-slow);
}

body.sidebar-collapsed .sidebar-collapse-btn {
  justify-content: center;
  padding: 1rem 0;
}

body.sidebar-collapsed .collapse-label {
  opacity: 0;
  width: 0;
  margin: 0;
  overflow: hidden;
}

/* ============================================================
   SIDEBAR FOOTER (tagline)
   ============================================================ */
.sidebar-footer {
  padding: 0.75rem 1.2rem;
  font-size: 0.72rem;
  color: var(--color-text-faint);
  border-top: 1px solid var(--border-subtle);
  white-space: nowrap;
  overflow: hidden;
  font-family: 'Orbitron', monospace;
  letter-spacing: 0.08em;
  transition: opacity var(--transition-slow);
}

body.sidebar-collapsed .sidebar-footer {
  opacity: 0;
}

/* ============================================================
   MOBILE TOP HEADER
   ============================================================ */
.mobile-header {
  display: none;
  position: fixed;
  top: 0;
  left: 0;
  right: 0;
  height: 64px;
  background: var(--color-surface);
  border-bottom: 1px solid var(--border-purple);
  z-index: var(--z-header);
  align-items: center;
  justify-content: space-between;
  padding: 0 1.25rem;
  box-shadow: 0 4px 20px rgba(0, 0, 0, 0.4);
}

.mobile-header::after {
  content: '';
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  height: 1px;
  background: var(--grad-purple-amber);
  opacity: 0.5;
}

.mobile-logo {
  font-family: 'Orbitron', monospace;
  font-size: 1rem;
  font-weight: 800;
  color: var(--color-text);
  letter-spacing: 0.06em;
  text-decoration: none;
  display: flex;
  align-items: center;
  gap: 0.6rem;
}

.mobile-logo-icon {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-sm);
  background: var(--grad-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 0.75rem;
  font-weight: 900;
  color: #fff;
  flex-shrink: 0;
  object-fit: cover;
}

.mobile-logo span {
  color: var(--color-primary);
}

/* ============================================================
   HAMBURGER BUTTON
   ============================================================ */
.hamburger-btn {
  width: 40px;
  height: 40px;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 5px;
  cursor: pointer;
  border-radius: var(--radius-sm);
  background: rgba(139, 92, 246, 0.08);
  border: 1px solid var(--border-purple);
  padding: 0;
  transition: all var(--transition-fast);
}

.hamburger-btn:hover {
  background: rgba(139, 92, 246, 0.18);
}

.hamburger-btn span {
  display: block;
  width: 20px;
  height: 2px;
  background: var(--color-text);
  border-radius: 1px;
  transition: all var(--transition-base);
  transform-origin: center;
}

.hamburger-btn.open span:nth-child(1) {
  transform: translateY(7px) rotate(45deg);
}

.hamburger-btn.open span:nth-child(2) {
  opacity: 0;
  transform: scaleX(0);
}

.hamburger-btn.open span:nth-child(3) {
  transform: translateY(-7px) rotate(-45deg);
}

/* ============================================================
   MOBILE DRAWER OVERLAY
   ============================================================ */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(8, 8, 16, 0.85);
  z-index: calc(var(--z-sidebar) - 1);
  backdrop-filter: blur(4px);
  opacity: 0;
  transition: opacity var(--transition-base);
}

.sidebar-overlay.active {
  opacity: 1;
}

/* ============================================================
   RESPONSIVE BREAKPOINTS
   ============================================================ */
@media (max-width: 1024px) {
  :root {
    --sidebar-width: 220px;
  }
}

@media (max-width: 768px) {
  .sidebar {
    transform: translateX(-100%);
    width: 280px !important;
    transition: transform var(--transition-base);
    top: 64px;
    height: calc(100vh - 64px);
    overflow-y: auto;
  }

  .sidebar.mobile-open {
    transform: translateX(0);
  }

  .sidebar-overlay {
    display: block;
    top: 64px;
  }

  .sidebar-collapse-btn,
  .sidebar-footer {
    display: none;
  }

  /* Force sidebar items to show labels on mobile */
  body.sidebar-collapsed .sidebar-nav-item {
    justify-content: flex-start;
    padding: 0.7rem 1.2rem;
  }

  body.sidebar-collapsed .sidebar-nav-item .nav-label {
    opacity: 1;
    transform: none;
    pointer-events: auto;
  }

  body.sidebar-collapsed .sidebar-nav-item::after {
    display: none;
  }

  body.sidebar-collapsed .sidebar-logo-text {
    opacity: 1;
    width: auto;
    pointer-events: auto;
  }

  body.sidebar-collapsed .sidebar-nav-label {
    opacity: 1;
  }

  body.sidebar-collapsed .collapse-label {
    opacity: 1;
  }

  body.sidebar-collapsed .sidebar-footer {
    opacity: 1;
  }

  .mobile-header {
    display: flex;
  }
}