/* =========================================================
   Nixvoid Persistent Collapsible Side Navbar Styles
   Architecture: 100% Overlay System for ALL Devices (Desktop & Mobile)
========================================================= */

/* Floating Toggle Button (Top-Left) */
.nav-toggle-btn, .settings-close-btn {
  top: 20px;
  right: 0px;
  width: 45px;
  height: 45px;
  background: var(--btn-toggle-bg);

  border-top: 1px solid var(--glass-border);
  border-left: 1px solid var(--glass-border);
  border-bottom: 1px solid var(--glass-border);
  border-right: 0px;

  border-top-left-radius: 10px;
  border-bottom-left-radius: 10px;

  color: var(--accent);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  z-index: 10005; /* Chat elements aur overlays se hamesha upar rahega */
}

.nav-toggle-btn {
  position: fixed;
}

.settings-close-btn {
  position: absolute;
}

.nav-toggle-btn.expandedBtn, .settings-close-btn {
  border: 0;
  border-radius: 0;
  background: transparent;
}

.nav-toggle-btn span.expandedSpan, .settings-close-btn span {
  font-size: 1.7rem;
}

.side-nav-container {
  position: fixed;
  top: 0;
  right: -320px;
  width: 320px;
  height: 100vh;
  height: 100dvh; /* 🔥 Mobile URL bar issue fix karega */
  background: var(--sidebar-bg);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-right: 1px solid var(--glass-border);
  z-index: 10000;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 20px 20px 20px 20px;
  box-sizing: border-box;

  /* 🔥 DYNAMIC HEIGHT LOGIC */
  display: flex;
  flex-direction: column;
}

/* Sidebar Expanded State (Universal for all screens) */
.side-nav-container.expanded {
  right: 0; /* Slide in effect */
  box-shadow: 0px 0 15px var(--shadow-md);
}

.nav-backdrop {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  background: var(--nav-backdrop);
  backdrop-filter: blur(3px);
  -webkit-backdrop-filter: blur(3px);
  z-index: 9999; /* Sidebar ke theek peeche */
  opacity: 0;
  pointer-events: none;
  transition: opacity 0.3s ease;
}

.nav-backdrop.active {
  opacity: 1;
  pointer-events: auto;
}

/* 🚨 ARCHITECTURE CHANGE: Desktop Layout Shift Removals */
/* Main app container hamesha full screen rahega, bina kisi shift ya width crunch ke */
#app {
  width: 100% !important;
  margin-left: 0 !important;
  transition: none !important;
}

@media (max-width: 768px) {
  .side-nav-container {
    width: 300px !important; /* Sidebar ki width ko fix kiya gaya hai */
    right: -300px !important;
  }
  .side-nav-container.expanded {
    right: 0 !important;
  }
}

/* =========================================================
   Sidebar Content Styling (Branding & Links)
========================================================= */

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 15px;
  padding-bottom: 25px;
  margin-bottom: 20px;
  border-bottom: 1px solid var(--glass-border);
  flex-shrink: 0; /* 🔥 Fix header height */
}

.brand-icon {
  width: 45px;
  height: 45px;
  background: var(--accent-glass);
  border: 1px solid var(--accent);
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  color: var(--accent);
  box-shadow: 0 0 15px var(--accent-glow);
}

.brand-icon span {
  font-size: 28px;
}

.brand-text {
  display: flex;
  align-items: center;
}

.brand-text .void,
.brand-text .nix {
  font-size: 1.5rem;
}

.version-badge {
  background: var(--success-glass);
  color: var(--success);
  border: 1px solid var(--success);
  font-size: 0.65rem;
  padding: 2px 8px;
  border-radius: 20px;
  font-weight: 600;
  letter-spacing: 1px;
  text-transform: uppercase;
  margin-left: 0.7rem;
}

.sidebar-scroll-area {
  flex: 1; /* 🔥 Bachi hui poori screen height automatic le lega */
  min-height: 0; /* 🔥 Flexbox bug fix mobile ke liye */
  height: auto;
  overflow-y: auto !important;
  -webkit-overflow-scrolling: touch !important;
}

/* Custom Scrollbar for Sidebar */
.sidebar-scroll-area::-webkit-scrollbar {
  width: 4px;
}
.sidebar-scroll-area::-webkit-scrollbar-track {
  background: transparent;
}
.sidebar-scroll-area::-webkit-scrollbar-thumb {
  background: var(--glass-border);
  border-radius: 10px;
}

/* Menu Sections */
.sidebar-section {
  margin-bottom: 25px;
  padding: 0px 5px;
}

.section-title {
  font-size: 0.75rem;
  color: var(--text-muted);
  text-transform: uppercase;
  letter-spacing: 1.5px;
  font-weight: 700;
  margin-bottom: 12px;
  padding-left: 10px;
}

/* Navigation Links */
.sidebar-link {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--link-text);
  text-decoration: none;
  padding: 12px 15px;
  border-radius: var(--radius-sm);
  font-size: 0.95rem;
  font-weight: 500;
  transition: var(--transition);
  border: 1px solid transparent;
}

.sidebar-link span.material-symbols-rounded {
  font-size: 20px;
  color: var(--text-muted);
  transition: var(--transition);
}

/* Hover & Active States */
.sidebar-link:hover,
.sidebar-link.active {
  background: var(--link-hover-bg);
  color: var(--text-bright);
  /* transform: translateX(5px); */
}

.sidebar-link:hover span.material-symbols-rounded,
.sidebar-link.active span.material-symbols-rounded {
  color: var(--accent);
}

.sidebar-link.active {
  background: var(--accent-glass);
  border-color: var(--accent-glass);
}

/* ==========================================
   SMART NAVBAR BUTTON AUTO-HIDE LOGIC
========================================== */
#navToggleBtn {
  transition: left 0.4s cubic-bezier(0.4, 0, 0.2, 1), opacity 0.3s ease,
    transform 0.3s ease, visibility 0.3s;
}

/* Update: Ab Create, Chat, aur Connecting screen sabhi par button hide hoga */
body:has(#createScreen.active, #chatScreen.active, #connectingScreen.active)
  #navToggleBtn {
  opacity: 0;
  visibility: hidden;
  transform: scale(0.8) translateX(-20px);
  pointer-events: none;
}

/* =========================================================
   Nixvoid Left Settings Sidebar & Themes Grid
========================================================= */
.settings-sidebar-container {
  position: fixed;
  top: 0;
  right: -320px; /* Hidden on the right */
  width: 320px;
  height: 100vh;
  height: 100dvh;
  background: var(--sidebar-bg);
  backdrop-filter: blur(25px);
  -webkit-backdrop-filter: blur(25px);
  border-left: 1px solid var(--glass-border);
  z-index: 10010;
  transition: all 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  padding: 20px;
  box-sizing: border-box;
  display: flex;
  flex-direction: column;
}

.settings-sidebar-container.expanded {
  right: 0;
  box-shadow: -5px 0 25px var(--shadow-lg);
}

/* Theme Selection Grid */
.theme-grid {
  display: flex;
  flex-direction: column;
  gap: 10px;
  margin-top: 10px;
}

.theme-card-btn {
  background: var(--input-bg);
  border: 1px solid var(--glass-border);
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  color: var(--text-muted);
  cursor: pointer;
  display: flex;
  flex-direction: row;
  align-items: center;
  gap: 15px;
  transition: var(--transition);
  font-family: "Inter", sans-serif;
  font-size: 0.95rem;
  font-weight: 600;
}

.theme-card-btn:hover {
  background: var(--glass-bg-hover);
  border-color: var(--glass-border-strong);
}

.theme-card-btn.active-theme {
  background: var(--accent-glass);
  border-color: var(--accent);
  color: var(--accent);
  box-shadow: inset 0 0 15px var(--accent-glass);
}

.theme-color-preview {
  width: 28px;
  height: 28px;
  border-radius: 50%;
  box-shadow: 0 4px 10px var(--shadow-lg);
}