/* ==========================================================================
   QWERO 2.0 — FULL CUSTOMIZATION & ERGONOMIC LIQUID DESIGN SYSTEM
   Deep Settings Customizer (Backgrounds, Glassmorphism, Radii, Density, Fonts),
   Aurora, Deep Space Void, OLED Black, Cyber Grid, Stories, Spaces & Physics
   ========================================================================== */

/* --------------------------------------------------------------------------
   CUSTOMIZABLE ROOT TOKENS
   -------------------------------------------------------------------------- */
:root {
  /* Dynamic Accent & Glow */
  --theme-accent: #c471ed;
  --theme-accent-hover: #d68df0;
  --theme-glow: rgba(196, 113, 237, 0.35);
  --theme-gradient: linear-gradient(135deg, #7928ca 0%, #c471ed 50%, #f64f59 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(121, 40, 202, 0.15), rgba(196, 113, 237, 0.15));

  /* Surface & Glass Settings */
  --bg-deep: #050508;
  --glass-blur-amount: 28px;
  --glass-opacity-amount: 0.04;
  --glass-panel: rgba(255, 255, 255, var(--glass-opacity-amount));
  --glass-panel-hover: rgba(255, 255, 255, calc(var(--glass-opacity-amount) + 0.035));
  --glass-blur: blur(var(--glass-blur-amount)) saturate(190%);
  --glass-border: rgba(255, 255, 255, 0.08);
  --glass-border-hover: rgba(255, 255, 255, 0.2);
  --glass-shadow: 0 8px 32px 0 rgba(0, 0, 0, 0.45);
  --glass-glow-shadow: 0 0 25px var(--theme-glow);

  /* Geometry & Typography Customization */
  --card-radius: 20px;
  --avatar-radius: 50%;
  --avatar-clip: none;
  --font-scale: 15px;
  --card-padding: 18px;

  /* Typography Colors */
  --x-text-primary: #ffffff;
  --x-text-secondary: #a0a0b2;
  --x-text-muted: #6e6e82;
  --x-text-dim: #4a4a5c;

  /* Reaction Colors */
  --color-like: #f91880;
  --color-repost: #00ba7c;
  --color-bookmark: #1d9bf0;

  /* Physics Easings */
  --ease-spring: cubic-bezier(0.16, 1, 0.3, 1);
  --ease-bounce: cubic-bezier(0.34, 1.56, 0.64, 1);

  /* Fonts */
  --font-main: 'Inter', -apple-system, BlinkMacSystemFont, "Segoe UI", Roboto, sans-serif;
  --font-display: 'Outfit', -apple-system, BlinkMacSystemFont, sans-serif;
}

/* --------------------------------------------------------------------------
   THEME PALETTES (ACCENT COLORS)
   -------------------------------------------------------------------------- */
body.theme-purple {
  --theme-accent: #c471ed;
  --theme-accent-hover: #d68df0;
  --theme-glow: rgba(196, 113, 237, 0.4);
  --theme-gradient: linear-gradient(135deg, #7928ca 0%, #c471ed 50%, #f64f59 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(121, 40, 202, 0.15), rgba(196, 113, 237, 0.15));
}

body.theme-cyan {
  --theme-accent: #00f2fe;
  --theme-accent-hover: #4facfe;
  --theme-glow: rgba(0, 242, 254, 0.4);
  --theme-gradient: linear-gradient(135deg, #00c6ff 0%, #0072ff 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(0, 198, 255, 0.15), rgba(0, 114, 255, 0.15));
}

body.theme-emerald {
  --theme-accent: #00f5a0;
  --theme-accent-hover: #00d9f5;
  --theme-glow: rgba(0, 245, 160, 0.4);
  --theme-gradient: linear-gradient(135deg, #00f5a0 0%, #00d9f5 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(0, 245, 160, 0.15), rgba(0, 217, 245, 0.15));
}

body.theme-amber {
  --theme-accent: #ff9f43;
  --theme-accent-hover: #feca57;
  --theme-glow: rgba(255, 159, 67, 0.4);
  --theme-gradient: linear-gradient(135deg, #ff9f43 0%, #ff5252 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(255, 159, 67, 0.15), rgba(255, 82, 82, 0.15));
}

body.theme-rose {
  --theme-accent: #ff4757;
  --theme-accent-hover: #ff6b81;
  --theme-glow: rgba(255, 71, 87, 0.4);
  --theme-gradient: linear-gradient(135deg, #ff4757 0%, #ff6b81 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(255, 71, 87, 0.15), rgba(255, 107, 129, 0.15));
}

body.theme-monochrome {
  --theme-accent: #ffffff;
  --theme-accent-hover: #e5e5ea;
  --theme-glow: rgba(255, 255, 255, 0.3);
  --theme-gradient: linear-gradient(135deg, #ffffff 0%, #8e8e93 100%);
  --theme-gradient-subtle: linear-gradient(135deg, rgba(255, 255, 255, 0.12), rgba(142, 142, 147, 0.12));
}

/* --------------------------------------------------------------------------
   SURFACE STYLES (GLASS vs SOLID vs GLOW)
   -------------------------------------------------------------------------- */
body.surface-solid {
  --glass-panel: #111116;
  --glass-panel-hover: #18181f;
  --glass-blur: none;
  --glass-border: #22222c;
  --glass-border-hover: #333342;
}

body.surface-glow {
  --glass-border: var(--theme-glow);
  --glass-border-hover: var(--theme-accent);
  --glass-shadow: 0 0 20px var(--theme-glow);
}

/* --------------------------------------------------------------------------
   AVATAR SHAPES
   -------------------------------------------------------------------------- */
body.avatar-circle img.x-tweet-avatar,
body.avatar-circle img.x-compose-avatar,
body.avatar-circle img.x-pill-avatar,
body.avatar-circle img.x-who-avatar,
body.avatar-circle img.x-story-avatar,
body.avatar-circle img.x-profile-avatar-img,
body.avatar-circle .x-story-ring {
  border-radius: 50% !important;
  clip-path: none !important;
}

body.avatar-squircle img.x-tweet-avatar,
body.avatar-squircle img.x-compose-avatar,
body.avatar-squircle img.x-pill-avatar,
body.avatar-squircle img.x-who-avatar,
body.avatar-squircle img.x-story-avatar,
body.avatar-squircle img.x-profile-avatar-img,
body.avatar-squircle .x-story-ring {
  border-radius: 28% !important;
  clip-path: none !important;
}

body.avatar-hexagon img.x-tweet-avatar,
body.avatar-hexagon img.x-compose-avatar,
body.avatar-hexagon img.x-pill-avatar,
body.avatar-hexagon img.x-who-avatar,
body.avatar-hexagon img.x-story-avatar,
body.avatar-hexagon img.x-profile-avatar-img,
body.avatar-hexagon .x-story-ring {
  border-radius: 0 !important;
  clip-path: polygon(50% 0%, 100% 25%, 100% 75%, 50% 100%, 0% 75%, 0% 25%) !important;
}

/* --------------------------------------------------------------------------
   BACKGROUND THEMES (AURORA, VOID, OLED, CYBER GRID, CUSTOM)
   -------------------------------------------------------------------------- */
/* 1. Aurora Borealis */
body.bg-aurora {
  background: linear-gradient(180deg, #050508 0%, #03151e 100%);
}
body.bg-aurora .mesh-orb.orb-1 { background: rgba(0, 245, 160, 0.35); }
body.bg-aurora .mesh-orb.orb-2 { background: rgba(0, 217, 245, 0.3); }
body.bg-aurora .mesh-orb.orb-3 { background: rgba(121, 40, 202, 0.25); }

/* 2. Deep Space Void with Stars */
body.bg-void {
  background-color: #020205;
  background-image: 
    radial-gradient(1px 1px at 20px 30px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 40px 70px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 90px 40px, #ffffff, rgba(0,0,0,0)),
    radial-gradient(1.5px 1.5px at 150px 120px, #c471ed, rgba(0,0,0,0)),
    radial-gradient(1px 1px at 240px 180px, #00f2fe, rgba(0,0,0,0));
  background-size: 300px 300px;
}
body.bg-void .mesh-orb { opacity: 0.3; }

/* 3. True OLED Black */
body.bg-oled {
  background-color: #000000 !important;
  background-image: none !important;
}
body.bg-oled .mesh-gradient-container { display: none !important; }

/* 4. Cyber Grid */
body.bg-cyber {
  background-color: #05050c;
  background-image: 
    linear-gradient(rgba(0, 242, 254, 0.05) 1px, transparent 1px),
    linear-gradient(90deg, rgba(0, 242, 254, 0.05) 1px, transparent 1px);
  background-size: 40px 40px;
}

/* 5. Custom Background */
body.bg-custom {
  background-size: cover;
  background-position: center;
  background-repeat: no-repeat;
  background-attachment: fixed;
}

/* --------------------------------------------------------------------------
   BASE LAYOUT
   -------------------------------------------------------------------------- */
* {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  background-color: var(--bg-deep);
  color: var(--x-text-primary);
  font-family: var(--font-main);
  font-size: var(--font-scale);
  line-height: 1.5;
  overflow-x: hidden;
  min-height: 100vh;
  position: relative;
  transition: background 0.3s ease, font-size 0.2s ease;
}

/* Background Mesh Container */
.mesh-gradient-container {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  overflow: hidden;
  z-index: 0;
  pointer-events: none;
}

.mesh-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(120px);
  opacity: 0.65;
  animation-duration: 20s;
  animation-iteration-count: infinite;
  animation-timing-function: ease-in-out;
  animation-direction: alternate;
}

.orb-1 { width: 600px; height: 600px; background: rgba(121, 40, 202, 0.28); top: -100px; left: -100px; }
.orb-2 { width: 700px; height: 700px; background: rgba(246, 79, 89, 0.22); bottom: -150px; right: -100px; }
.orb-3 { width: 500px; height: 500px; background: rgba(0, 242, 254, 0.18); top: 40%; left: 45%; }

/* Particle Canvas */
.particle-canvas {
  position: fixed;
  top: 0;
  left: 0;
  width: 100vw;
  height: 100vh;
  z-index: 9999;
  pointer-events: none;
}

/* 3-Column Ergonomic Container */
.x-container {
  display: flex;
  justify-content: center;
  min-height: 100vh;
  margin: 0 auto;
  max-width: 1280px;
  position: relative;
  z-index: 1;
}

/* --------------------------------------------------------------------------
   LEFT SIDEBAR DOCK (ERGONOMIC NAVIGATION)
   -------------------------------------------------------------------------- */
.x-left-nav {
  width: 275px;
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 0 12px 20px 12px;
  position: relative;
}

.nav-inner-sticky {
  position: sticky;
  top: 0;
  height: 100vh;
  display: flex;
  flex-direction: column;
  justify-content: space-between;
  padding: 14px 0;
}

.x-logo-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 52px;
  height: 52px;
  border-radius: 50%;
  margin-bottom: 12px;
  margin-left: 6px;
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  transition: all 0.35s var(--ease-spring);
}

.x-logo-btn:hover {
  background: var(--glass-panel-hover);
  border-color: var(--theme-accent);
  box-shadow: var(--glass-glow-shadow);
  transform: scale(1.08) rotate(8deg);
}

.x-brand-logo-img {
  width: 32px;
  height: 32px;
  filter: drop-shadow(0 0 8px var(--theme-glow));
}

.x-nav-list {
  display: flex;
  flex-direction: column;
  gap: 4px;
}

.x-nav-link {
  display: flex;
  align-items: center;
  gap: 16px;
  padding: 12px 18px;
  border-radius: 9999px;
  color: var(--x-text-secondary);
  text-decoration: none;
  font-size: 18px;
  font-weight: 600;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all 0.28s var(--ease-spring);
  width: fit-content;
}

.x-nav-link:hover {
  color: var(--x-text-primary);
  background: var(--glass-panel-hover);
  backdrop-filter: var(--glass-blur);
  border-color: var(--glass-border-hover);
  transform: translateX(6px);
}

.x-nav-link.active {
  color: var(--x-text-primary);
  font-weight: 800;
  background: var(--glass-panel-hover);
  backdrop-filter: var(--glass-blur);
  border-color: var(--theme-accent);
  box-shadow: 0 4px 20px var(--theme-glow);
}

.x-nav-link.active .x-nav-svg {
  color: var(--theme-accent);
  filter: drop-shadow(0 0 6px var(--theme-glow));
}

.x-nav-svg {
  width: 24px;
  height: 24px;
  flex-shrink: 0;
  transition: transform 0.3s var(--ease-spring);
}

.x-icon-wrap {
  position: relative;
  display: flex;
  align-items: center;
}

.x-badge {
  position: absolute;
  top: -4px;
  right: -6px;
  background: var(--theme-gradient);
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  padding: 1px 6px;
  border-radius: 9999px;
  border: 1.5px solid var(--bg-deep);
  box-shadow: 0 0 10px var(--theme-glow);
}

/* Post Trigger Button */
.x-btn-main-post {
  width: 92%;
  margin-top: 18px;
  padding: 15px 0;
  border-radius: 9999px;
  background: var(--theme-gradient);
  color: #ffffff;
  border: none;
  font-size: 17px;
  font-weight: 800;
  font-family: var(--font-display);
  cursor: pointer;
  box-shadow: 0 6px 24px var(--theme-glow);
  transition: all 0.3s var(--ease-spring);
  display: flex;
  align-items: center;
  justify-content: center;
}

.x-btn-main-post:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 10px 32px var(--theme-glow);
  filter: brightness(1.1);
}

.x-feather-svg {
  display: none;
}

/* User Pill & Account Widget */
.x-account-widget {
  position: relative;
  width: 100%;
}

.x-account-pill {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 14px;
  border-radius: 9999px;
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--x-text-primary);
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
}

.x-account-pill:hover {
  background: var(--glass-panel-hover);
  border-color: var(--glass-border-hover);
  box-shadow: var(--glass-shadow);
  transform: translateY(-1px);
}

.x-pill-avatar {
  width: 42px;
  height: 42px;
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 1.5px solid var(--theme-accent);
}

.x-pill-user-info {
  flex: 1;
  text-align: left;
  min-width: 0;
}

.x-pill-name-row {
  display: flex;
  align-items: center;
  gap: 4px;
}

.x-pill-display-name {
  font-weight: 700;
  font-size: 14px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.x-pill-handle {
  font-size: 13px;
  color: var(--x-text-muted);
}

.x-guest-pill-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px;
  border-radius: 9999px;
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--theme-accent);
  font-weight: 700;
  font-size: 15px;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
}

.x-guest-pill-btn:hover {
  background: var(--glass-panel-hover);
  border-color: var(--theme-accent);
  box-shadow: 0 4px 18px var(--theme-glow);
}

.x-account-dropdown {
  position: absolute;
  bottom: calc(100% + 12px);
  left: 0;
  width: 250px;
  background: rgba(18, 18, 24, 0.92);
  backdrop-filter: blur(32px) saturate(200%);
  border: 1px solid var(--glass-border-hover);
  border-radius: 18px;
  padding: 8px;
  box-shadow: 0 16px 48px rgba(0, 0, 0, 0.7);
  z-index: 100;
}

.x-dropdown-item {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 11px 14px;
  border-radius: 12px;
  background: transparent;
  border: none;
  color: var(--x-text-primary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.2s ease;
  text-align: left;
}

.x-dropdown-item:hover {
  background: rgba(255, 255, 255, 0.08);
}

.x-dropdown-item.danger {
  color: #ff4757;
}

/* --------------------------------------------------------------------------
   CENTER MAIN TIMELINE (CUSTOMIZABLE GLASS PANE)
   -------------------------------------------------------------------------- */
.x-main-timeline {
  width: 630px;
  min-height: 100vh;
  border-left: 1px solid var(--glass-border);
  border-right: 1px solid var(--glass-border);
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  padding-bottom: 90px;
  position: relative;
  box-shadow: var(--glass-shadow);
  transition: width 0.3s ease;
}

.x-timeline-topbar {
  position: sticky;
  top: 0;
  z-index: 20;
  background: rgba(5, 5, 8, 0.85);
  backdrop-filter: blur(24px) saturate(180%);
  border-bottom: 1px solid var(--glass-border);
}

.x-topbar-title-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 14px 20px;
}

.x-page-heading {
  font-size: 21px;
  font-weight: 800;
  font-family: var(--font-display);
}

.x-topbar-controls {
  display: flex;
  align-items: center;
  gap: 10px;
}

.x-control-btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 38px;
  height: 38px;
  border-radius: 50%;
  background: var(--glass-panel);
  border: 1px solid var(--glass-border);
  color: var(--x-text-secondary);
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
}

.x-control-btn:hover {
  color: var(--x-text-primary);
  background: var(--glass-panel-hover);
  border-color: var(--theme-accent);
  box-shadow: 0 0 12px var(--theme-glow);
  transform: scale(1.08);
}

.x-timeline-tabs {
  display: flex;
  border-bottom: 1px solid var(--glass-border);
}

.x-tab-btn {
  flex: 1;
  text-align: center;
  padding: 14px 0;
  background: transparent;
  border: none;
  color: var(--x-text-secondary);
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  position: relative;
  transition: all 0.2s ease;
}

.x-tab-btn:hover {
  background: rgba(255, 255, 255, 0.03);
  color: var(--x-text-primary);
}

.x-tab-btn.active {
  color: var(--x-text-primary);
  font-weight: 700;
}

.x-tab-bar {
  display: none;
  position: absolute;
  bottom: 0;
  left: 50%;
  transform: translateX(-50%);
  width: 56px;
  height: 3.5px;
  border-radius: 9999px;
  background: var(--theme-gradient);
  box-shadow: 0 0 12px var(--theme-glow);
}

.x-tab-btn.active .x-tab-bar {
  display: block;
}

/* --------------------------------------------------------------------------
   VIEW ROUTER VISIBILITY (CRITICAL FIX)
   -------------------------------------------------------------------------- */
.x-view {
  display: none !important;
}

.x-view.active {
  display: block !important;
  animation: fadeInView 0.3s var(--ease-spring);
}

@keyframes fadeInView {
  0% { opacity: 0; transform: translateY(8px); }
  100% { opacity: 1; transform: translateY(0); }
}

/* --------------------------------------------------------------------------
   SETTINGS VIEW (FULL CUSTOMIZER)
   -------------------------------------------------------------------------- */
.x-settings-page {
  padding: 24px 20px;
  display: flex;
  flex-direction: column;
  gap: 28px;
}

.settings-section {
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.settings-section-title {
  font-size: 19px;
  font-weight: 800;
  font-family: var(--font-display);
  display: flex;
  align-items: center;
  gap: 8px;
  color: var(--x-text-primary);
}

.setting-card {
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  padding: 18px 20px;
  display: flex;
  flex-direction: column;
  gap: 14px;
  box-shadow: var(--glass-shadow);
  transition: all 0.25s var(--ease-spring);
}

.setting-card:hover {
  border-color: var(--glass-border-hover);
}

.setting-title-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
}

.setting-label {
  font-size: 15px;
  font-weight: 700;
}

.setting-desc {
  font-size: 13px;
  color: var(--x-text-muted);
}

/* Option Pill Groups */
.option-pill-group {
  display: flex;
  flex-wrap: wrap;
  gap: 8px;
}

.option-pill {
  padding: 9px 18px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05);
  border: 1px solid var(--glass-border);
  color: var(--x-text-secondary);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
}

.option-pill:hover {
  background: rgba(255, 255, 255, 0.1);
  color: var(--x-text-primary);
  border-color: var(--glass-border-hover);
}

.option-pill.active {
  background: var(--theme-gradient);
  color: #ffffff;
  border-color: transparent;
  box-shadow: 0 4px 16px var(--theme-glow);
  font-weight: 700;
}

/* Color Swatches */
.color-swatches-grid {
  display: flex;
  gap: 12px;
  flex-wrap: wrap;
}

.color-swatch-btn {
  width: 42px;
  height: 42px;
  border-radius: 50%;
  border: 3px solid transparent;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
  position: relative;
}

.color-swatch-btn:hover {
  transform: scale(1.15);
}

.color-swatch-btn.active {
  border-color: #ffffff;
  box-shadow: 0 0 16px currentColor;
  transform: scale(1.1);
}

/* Slider Controls */
.slider-control-wrap {
  display: flex;
  align-items: center;
  gap: 14px;
}

.settings-slider {
  flex: 1;
  -webkit-appearance: none;
  height: 6px;
  border-radius: 9999px;
  background: rgba(255, 255, 255, 0.15);
  outline: none;
}

.settings-slider::-webkit-slider-thumb {
  -webkit-appearance: none;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--theme-accent);
  box-shadow: 0 0 10px var(--theme-glow);
  cursor: pointer;
  transition: transform 0.15s ease;
}

.settings-slider::-webkit-slider-thumb:hover {
  transform: scale(1.2);
}

.slider-val-badge {
  font-size: 13px;
  font-weight: 700;
  color: var(--theme-accent);
  min-width: 40px;
}

/* Toggle Switch */
.toggle-switch-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.toggle-switch {
  position: relative;
  display: inline-block;
  width: 48px;
  height: 26px;
}

.toggle-switch input {
  opacity: 0;
  width: 0;
  height: 0;
}

.toggle-slider {
  position: absolute;
  cursor: pointer;
  top: 0; left: 0; right: 0; bottom: 0;
  background-color: rgba(255, 255, 255, 0.15);
  border-radius: 9999px;
  transition: 0.3s var(--ease-spring);
}

.toggle-slider:before {
  position: absolute;
  content: "";
  height: 20px;
  width: 20px;
  left: 3px;
  bottom: 3px;
  background-color: white;
  border-radius: 50%;
  transition: 0.3s var(--ease-spring);
}

.toggle-switch input:checked + .toggle-slider {
  background: var(--theme-gradient);
  box-shadow: 0 0 12px var(--theme-glow);
}

.toggle-switch input:checked + .toggle-slider:before {
  transform: translateX(22px);
}

/* Custom Photo Upload Card */
.custom-bg-input-row {
  margin-top: 6px;
}

.custom-file-upload-card {
  display: flex;
  flex-direction: column;
  gap: 12px;
  padding: 14px;
  border-radius: 16px;
  background: rgba(255, 255, 255, 0.03);
  border: 1.5px dashed var(--glass-border-hover);
  transition: all 0.25s var(--ease-spring);
}

.custom-file-upload-card:hover {
  border-color: var(--theme-accent);
  background: rgba(255, 255, 255, 0.06);
}

.btn-upload-file {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  padding: 12px 20px;
  border-radius: 14px;
  background: var(--theme-gradient);
  color: #ffffff;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 18px var(--theme-glow);
  transition: all 0.25s var(--ease-spring);
}

.btn-upload-file:hover {
  transform: translateY(-2px) scale(1.02);
  box-shadow: 0 8px 24px var(--theme-glow);
  filter: brightness(1.1);
}

.btn-upload-file-sm {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  padding: 9px 16px;
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.08);
  border: 1px solid var(--glass-border-hover);
  color: var(--x-text-primary);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-upload-file-sm:hover {
  background: var(--theme-gradient);
  border-color: transparent;
  color: #ffffff;
  box-shadow: 0 4px 14px var(--theme-glow);
}

.custom-bg-preview-wrap {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 14px;
  padding: 10px 14px;
  border-radius: 12px;
  background: rgba(0, 0, 0, 0.35);
  border: 1px solid var(--glass-border);
}

.custom-bg-preview-wrap img {
  width: 90px;
  height: 54px;
  border-radius: 8px;
  object-fit: cover;
  border: 1px solid var(--theme-accent);
}

.btn-remove-custom-bg {
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(255, 71, 87, 0.15);
  border: 1px solid #ff4757;
  color: #ff4757;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.2s ease;
}

.btn-remove-custom-bg:hover {
  background: #ff4757;
  color: #ffffff;
}

/* Edit Profile Photo Groups */
.edit-profile-photo-group {
  display: flex;
  flex-direction: column;
  gap: 6px;
  text-align: left;
}

.edit-photo-field-label {
  font-size: 13px;
  font-weight: 700;
  color: var(--x-text-secondary);
}

.edit-photo-picker-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.edit-photo-thumb {
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 1.5px solid var(--theme-accent);
}

.avatar-thumb {
  width: 44px;
  height: 44px;
}

.banner-thumb {
  width: 80px;
  height: 38px;
  border-radius: 8px;
}

/* --------------------------------------------------------------------------
   STORIES / CIRCLES RAIL
   -------------------------------------------------------------------------- */
.x-stories-rail {
  display: flex;
  align-items: center;
  gap: 14px;
  padding: 14px 18px;
  overflow-x: auto;
  scrollbar-width: none;
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.015);
}

.x-stories-rail::-webkit-scrollbar { display: none; }

.x-story-item {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  flex-shrink: 0;
  transition: transform 0.25s var(--ease-spring);
}

.x-story-item:hover {
  transform: translateY(-3px) scale(1.05);
}

.x-story-ring {
  width: 64px;
  height: 64px;
  border-radius: var(--avatar-radius);
  padding: 2.5px;
  background: var(--theme-gradient);
  display: flex;
  align-items: center;
  justify-content: center;
  box-shadow: 0 0 16px var(--theme-glow);
  position: relative;
}

.x-story-avatar {
  width: 100%;
  height: 100%;
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 2px solid var(--bg-deep);
  background: var(--bg-deep);
}

.x-story-add-badge {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--theme-accent);
  color: #000000;
  font-weight: 900;
  font-size: 14px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 2px solid var(--bg-deep);
}

.x-story-username {
  font-size: 12px;
  font-weight: 600;
  color: var(--x-text-secondary);
  max-width: 68px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* --------------------------------------------------------------------------
   POST COMPOSER BOX
   -------------------------------------------------------------------------- */
.x-compose-box {
  display: flex;
  gap: 14px;
  padding: var(--card-padding);
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
}

.x-compose-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 1px solid var(--glass-border);
  flex-shrink: 0;
}

.x-compose-main {
  flex: 1;
  min-width: 0;
}

.x-audience-badge {
  display: inline-block;
  padding: 3px 12px;
  border-radius: 9999px;
  background: var(--theme-gradient-subtle);
  color: var(--theme-accent);
  font-size: 12px;
  font-weight: 700;
  border: 1px solid var(--theme-glow);
  margin-bottom: 10px;
}

.x-compose-textarea {
  width: 100%;
  min-height: 52px;
  max-height: 240px;
  background: transparent;
  border: none;
  outline: none;
  color: var(--x-text-primary);
  font-family: var(--font-main);
  font-size: calc(var(--font-scale) + 2px);
  line-height: 1.4;
  resize: none;
  padding: 4px 0;
}

.x-compose-textarea::placeholder {
  color: var(--x-text-muted);
}

.x-media-preview {
  position: relative;
  margin-top: 10px;
  border-radius: var(--card-radius);
  overflow: hidden;
  max-height: 320px;
  border: 1px solid var(--glass-border);
}

.x-media-preview img {
  width: 100%;
  height: auto;
  max-height: 320px;
  object-fit: cover;
  display: block;
}

.x-remove-media-btn {
  position: absolute;
  top: 10px;
  right: 10px;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(10px);
  border: 1px solid rgba(255, 255, 255, 0.2);
  color: #ffffff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
}

.x-compose-toolbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 12px;
  padding-top: 12px;
  border-top: 1px solid var(--glass-border);
}

.x-toolbar-icons {
  display: flex;
  align-items: center;
  gap: 6px;
}

.x-icon-button {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 36px;
  height: 36px;
  border-radius: 50%;
  background: transparent;
  border: none;
  color: var(--theme-accent);
  cursor: pointer;
  transition: all 0.2s var(--ease-spring);
}

.x-icon-button:hover {
  background: var(--theme-gradient-subtle);
  transform: scale(1.12);
  box-shadow: 0 0 12px var(--theme-glow);
}

.hidden-file-input { display: none; }

.x-compose-actions-right {
  display: flex;
  align-items: center;
  gap: 12px;
}

.x-char-counter-wrap {
  display: flex;
  align-items: center;
  gap: 6px;
}

.x-char-ring { transform: rotate(-90deg); }

.x-ring-bg {
  fill: none;
  stroke: rgba(255, 255, 255, 0.1);
  stroke-width: 3.5;
}

.x-ring-progress {
  fill: none;
  stroke: var(--theme-accent);
  stroke-width: 3.5;
  stroke-linecap: round;
  transition: stroke-dasharray 0.15s ease, stroke 0.25s ease;
}

.x-ring-progress.warning { stroke: #ffd32a; }
.x-ring-progress.danger { stroke: #ff3f34; }

.x-char-counter-text {
  font-size: 12px;
  font-weight: 700;
  color: var(--x-text-muted);
}

.x-compose-divider {
  width: 1px;
  height: 24px;
  background: var(--glass-border);
}

.x-btn-post-submit {
  padding: 9px 20px;
  border-radius: 9999px;
  background: var(--theme-gradient);
  color: #ffffff;
  border: none;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: all 0.25s var(--ease-spring);
  box-shadow: 0 4px 18px var(--theme-glow);
}

.x-btn-post-submit:hover:not(:disabled) {
  transform: translateY(-1px) scale(1.03);
  box-shadow: 0 6px 24px var(--theme-glow);
  filter: brightness(1.1);
}

.x-btn-post-submit:disabled {
  opacity: 0.45;
  cursor: not-allowed;
}

.x-floating-new-posts {
  position: sticky;
  top: 65px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 18;
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 9px 18px;
  border-radius: 9999px;
  background: var(--theme-gradient);
  color: #ffffff;
  border: 1px solid rgba(255, 255, 255, 0.2);
  box-shadow: 0 8px 30px var(--theme-glow);
  font-size: 14px;
  font-weight: 700;
  cursor: pointer;
  margin-bottom: 10px;
}

/* --------------------------------------------------------------------------
   TWEET CARDS (CUSTOMIZABLE RADIUS & DENSITY)
   -------------------------------------------------------------------------- */
.x-posts-stream {
  display: flex;
  flex-direction: column;
}

.x-tweet-card {
  display: flex;
  gap: 14px;
  padding: var(--card-padding);
  border-bottom: 1px solid var(--glass-border);
  background: rgba(255, 255, 255, 0.02);
  transition: background 0.25s ease, transform 0.3s var(--ease-spring), box-shadow 0.3s ease;
  cursor: pointer;
  position: relative;
  animation: tweetSlideIn 0.45s var(--ease-spring) both;
  transform-style: preserve-3d;
  will-change: transform;
}

.x-tweet-card:hover {
  background: var(--glass-panel-hover);
  border-color: var(--glass-border-hover);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.35);
}

@keyframes tweetSlideIn {
  0% { opacity: 0; transform: translateY(22px) scale(0.97); }
  100% { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes heartPop {
  0% { transform: scale(1); }
  50% { transform: scale(1.4); }
  100% { transform: scale(1); }
}

@keyframes repostRotate {
  0% { transform: rotate(0deg) scale(1); }
  50% { transform: rotate(180deg) scale(1.2); }
  100% { transform: rotate(360deg) scale(1); }
}

.x-tweet-avatar-wrap { flex-shrink: 0; }

.x-tweet-avatar {
  width: 44px;
  height: 44px;
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 1px solid var(--glass-border);
  transition: transform 0.25s var(--ease-spring);
}

.x-tweet-avatar:hover {
  transform: scale(1.08);
  border-color: var(--theme-accent);
  box-shadow: 0 0 12px var(--theme-glow);
}

.x-tweet-main { flex: 1; min-width: 0; }

.x-tweet-head {
  display: flex;
  align-items: center;
  gap: 5px;
  margin-bottom: 4px;
  flex-wrap: wrap;
}

.x-author-name {
  font-weight: 700;
  font-size: 15px;
  color: var(--x-text-primary);
  text-decoration: none;
}

.x-author-name:hover {
  text-decoration: underline;
  color: var(--theme-accent);
}

.x-author-handle {
  color: var(--x-text-muted);
  font-size: 14px;
}

.x-dot { color: var(--x-text-dim); }
.x-time { color: var(--x-text-muted); font-size: 14px; }

.x-btn-del-tweet {
  margin-left: auto;
  background: transparent;
  border: none;
  color: var(--x-text-dim);
  cursor: pointer;
  padding: 4px;
  border-radius: 50%;
}

.x-btn-del-tweet:hover {
  color: #ff4757;
  background: rgba(255, 71, 87, 0.15);
}

.x-tweet-text {
  font-size: var(--font-scale);
  line-height: 1.5;
  color: var(--x-text-primary);
  margin-bottom: 12px;
  word-break: break-word;
  white-space: pre-wrap;
}

.x-tweet-text a {
  color: var(--theme-accent);
  text-decoration: none;
  font-weight: 600;
}

.x-tweet-text a:hover { text-decoration: underline; }

.x-tweet-media {
  margin-top: 10px;
  margin-bottom: 12px;
  border-radius: var(--card-radius);
  overflow: hidden;
  border: 1px solid var(--glass-border);
  box-shadow: 0 6px 24px rgba(0, 0, 0, 0.4);
}

.x-tweet-media img {
  width: 100%;
  height: auto;
  max-height: 380px;
  object-fit: cover;
  display: block;
}

/* Actions */
.x-tweet-actions {
  display: flex;
  align-items: center;
  justify-content: space-between;
  max-width: 440px;
  margin-top: 6px;
}

.x-action-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  background: transparent;
  border: none;
  color: var(--x-text-muted);
  font-size: 13px;
  font-weight: 500;
  cursor: pointer;
  padding: 6px 8px;
  border-radius: 9999px;
  transition: all 0.22s var(--ease-spring);
}

.x-action-icon {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 32px;
  height: 32px;
  border-radius: 50%;
  transition: transform 0.25s var(--ease-spring), background 0.2s ease;
}

.x-action-reply:hover { color: #1d9bf0; }
.x-action-reply:hover .x-action-icon { background: rgba(29, 155, 240, 0.15); transform: scale(1.15); }

.x-action-repost:hover { color: var(--color-repost); }
.x-action-repost:hover .x-action-icon { background: rgba(0, 186, 124, 0.15); transform: scale(1.15); }
.x-action-repost.active { color: var(--color-repost); }

.x-action-like:hover { color: var(--color-like); }
.x-action-like:hover .x-action-icon { background: rgba(249, 24, 128, 0.15); transform: scale(1.15); }
.x-action-like.active { color: var(--color-like); }
.x-action-like.active svg { filter: drop-shadow(0 0 8px var(--color-like)); }

.x-action-bookmark:hover { color: var(--color-bookmark); }
.x-action-bookmark:hover .x-action-icon { background: rgba(29, 155, 240, 0.15); transform: scale(1.15); }
.x-action-bookmark.active { color: var(--color-bookmark); }

/* --------------------------------------------------------------------------
   RIGHT SIDEBAR
   -------------------------------------------------------------------------- */
.x-right-sidebar {
  width: 350px;
  flex-shrink: 0;
  padding: 12px 0 32px 28px;
  display: flex;
  flex-direction: column;
}

.x-right-sticky {
  position: sticky;
  top: 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
}

.x-search-box-widget {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 11px 16px;
  border-radius: 9999px;
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  color: var(--x-text-muted);
}

.x-search-box-widget:focus-within {
  background: rgba(255, 255, 255, 0.08);
  border-color: var(--theme-accent);
  box-shadow: 0 0 20px var(--theme-glow);
  color: var(--theme-accent);
}

.x-search-box-widget input {
  background: transparent;
  border: none;
  outline: none;
  color: var(--x-text-primary);
  font-size: 15px;
  width: 100%;
}

.x-widget-card {
  background: var(--glass-panel);
  backdrop-filter: var(--glass-blur);
  border: 1px solid var(--glass-border);
  border-radius: var(--card-radius);
  padding: 16px;
  box-shadow: var(--glass-shadow);
}

.x-widget-card h3 {
  font-size: 18px;
  font-weight: 800;
  font-family: var(--font-display);
  margin-bottom: 12px;
}

/* Audio Spaces Widget */
.x-spaces-widget {
  background: linear-gradient(135deg, rgba(121, 40, 202, 0.12), rgba(0, 242, 254, 0.1));
  border: 1px solid var(--theme-glow);
}

.x-space-live-badge {
  display: inline-flex;
  align-items: center;
  gap: 6px;
  padding: 3px 10px;
  border-radius: 9999px;
  background: #ff4757;
  color: #ffffff;
  font-size: 11px;
  font-weight: 800;
  margin-bottom: 8px;
}

.x-live-pulse-dot {
  width: 7px;
  height: 7px;
  border-radius: 50%;
  background: #ffffff;
  animation: livePulse 1.2s infinite;
}

@keyframes livePulse {
  0% { transform: scale(0.85); opacity: 0.6; }
  50% { transform: scale(1.3); opacity: 1; }
  100% { transform: scale(0.85); opacity: 0.6; }
}

.x-btn-join-space {
  width: 100%;
  padding: 10px;
  border-radius: 9999px;
  background: var(--theme-gradient);
  color: #ffffff;
  border: none;
  font-weight: 700;
  font-size: 14px;
  cursor: pointer;
  box-shadow: 0 4px 18px var(--theme-glow);
}

/* Trends */
.x-trend-row {
  display: flex;
  justify-content: space-between;
  padding: 10px 0;
  cursor: pointer;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.x-trend-row:last-child { border-bottom: none; }
.x-trend-cat { font-size: 12px; color: var(--x-text-muted); }
.x-trend-tag { font-size: 15px; font-weight: 700; color: var(--x-text-primary); margin: 2px 0; }
.x-trend-count { font-size: 12px; color: var(--x-text-muted); }

/* Who to Follow */
.x-who-item {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 10px 0;
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
}

.x-who-item:last-child { border-bottom: none; }

.x-who-avatar {
  width: 40px;
  height: 40px;
  border-radius: var(--avatar-radius);
  object-fit: cover;
  border: 1px solid var(--glass-border);
}

.x-who-info { flex: 1; min-width: 0; }
.x-who-name { font-weight: 700; font-size: 14px; }
.x-who-handle { font-size: 13px; color: var(--x-text-muted); }

.x-btn-follow-sm {
  padding: 6px 16px;
  border-radius: 9999px;
  background: var(--x-text-primary);
  color: #000000;
  border: none;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

.x-btn-follow-sm.following {
  background: transparent;
  color: var(--x-text-primary);
  border: 1px solid var(--glass-border-hover);
}

/* Footer Links */
.x-footer-nav nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 14px;
  font-size: 12px;
  color: var(--x-text-dim);
}

.x-footer-nav a { color: var(--x-text-dim); text-decoration: none; }
.x-footer-nav a:hover { text-decoration: underline; }

/* --------------------------------------------------------------------------
   FLOATING SPACES BAR
   -------------------------------------------------------------------------- */
.x-floating-space-bar {
  position: fixed;
  bottom: 24px;
  left: 50%;
  transform: translateX(-50%);
  z-index: 50;
  width: 90%;
  max-width: 580px;
  background: rgba(18, 18, 24, 0.9);
  backdrop-filter: blur(32px) saturate(200%);
  border: 1px solid var(--theme-glow);
  border-radius: 9999px;
  padding: 10px 20px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  box-shadow: 0 12px 40px rgba(0, 0, 0, 0.8), 0 0 25px var(--theme-glow);
}

.x-space-bar-left { display: flex; align-items: center; gap: 12px; }

.x-sound-wave { display: flex; align-items: center; gap: 3px; height: 20px; }
.x-sound-wave span {
  width: 3px;
  height: 100%;
  background: var(--theme-accent);
  border-radius: 9999px;
  animation: waveAnim 1s ease-in-out infinite alternate;
}

.x-sound-wave span:nth-child(1) { animation-delay: 0.1s; height: 35%; }
.x-sound-wave span:nth-child(2) { animation-delay: 0.3s; height: 85%; }
.x-sound-wave span:nth-child(3) { animation-delay: 0.2s; height: 60%; }
.x-sound-wave span:nth-child(4) { animation-delay: 0.4s; height: 100%; }

@keyframes waveAnim {
  0% { transform: scaleY(0.3); }
  100% { transform: scaleY(1); }
}

.x-space-bar-title { font-size: 14px; font-weight: 700; }
.x-space-bar-sub { font-size: 11px; color: var(--x-text-muted); }

.x-btn-space-leave {
  padding: 6px 14px;
  border-radius: 9999px;
  background: rgba(255, 71, 87, 0.2);
  border: 1px solid #ff4757;
  color: #ff4757;
  font-size: 13px;
  font-weight: 700;
  cursor: pointer;
}

/* --------------------------------------------------------------------------
   STORY VIEWER & LIGHTBOX
   -------------------------------------------------------------------------- */
.x-story-modal, .x-lightbox-modal {
  position: fixed;
  top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(0, 0, 0, 0.92);
  backdrop-filter: blur(36px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
}

.x-story-box {
  width: 100%; max-width: 420px;
  height: 85vh; max-height: 780px;
  border-radius: 28px;
  background: #111116;
  border: 1px solid var(--glass-border);
  position: relative;
  overflow: hidden;
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9);
  display: flex;
  flex-direction: column;
}

.x-story-progress-bar-wrap {
  position: absolute; top: 12px; left: 12px; right: 12px;
  display: flex; gap: 4px; z-index: 10;
}

.x-story-progress-segment {
  flex: 1; height: 3px;
  background: rgba(255, 255, 255, 0.25);
  border-radius: 9999px;
  overflow: hidden;
}

.x-story-progress-fill {
  height: 100%; width: 0%;
  background: #ffffff;
  border-radius: 9999px;
}

.x-story-header {
  position: absolute; top: 24px; left: 14px; right: 14px;
  display: flex; align-items: center; justify-content: space-between; z-index: 10;
}

.x-story-author { display: flex; align-items: center; gap: 10px; }
.x-story-header-avatar { width: 36px; height: 36px; border-radius: var(--avatar-radius); border: 1.5px solid var(--theme-accent); }

.x-story-content-view {
  width: 100%; height: 100%;
  display: flex; align-items: center; justify-content: center; position: relative;
}

.x-story-img { width: 100%; height: 100%; object-fit: cover; }

.x-story-text-overlay {
  position: absolute; bottom: 24px; left: 16px; right: 16px;
  padding: 14px 18px;
  background: rgba(0, 0, 0, 0.65);
  backdrop-filter: blur(20px);
  border-radius: 18px;
  border: 1px solid rgba(255, 255, 255, 0.15);
  font-size: 16px; color: #ffffff; text-align: center;
}

.x-lightbox-img {
  max-width: 90vw; max-height: 90vh;
  border-radius: var(--card-radius);
  box-shadow: 0 20px 60px rgba(0, 0, 0, 0.9);
  border: 1px solid rgba(255, 255, 255, 0.12);
}

/* --------------------------------------------------------------------------
   MODALS
   -------------------------------------------------------------------------- */
.x-modal-backdrop {
  position: fixed; top: 0; left: 0;
  width: 100vw; height: 100vh;
  background: rgba(0, 0, 0, 0.75);
  backdrop-filter: blur(20px);
  z-index: 100;
  display: flex; align-items: center; justify-content: center;
  padding: 16px;
}

.x-modal-window {
  width: 100%; max-width: 600px;
  background: rgba(18, 18, 24, 0.92);
  backdrop-filter: blur(36px) saturate(200%);
  border: 1px solid var(--glass-border-hover);
  border-radius: 28px;
  box-shadow: 0 24px 64px rgba(0, 0, 0, 0.8), 0 0 35px var(--theme-glow);
  overflow: hidden;
}

.x-modal-header {
  display: flex; align-items: center; justify-content: space-between;
  padding: 16px 20px;
  border-bottom: 1px solid var(--glass-border);
}

.x-modal-close-btn {
  background: transparent; border: none;
  color: var(--x-text-secondary); font-size: 20px;
  cursor: pointer; padding: 6px; border-radius: 50%;
}

.x-modal-close-btn:hover { color: var(--x-text-primary); background: rgba(255, 255, 255, 0.1); }
.x-modal-content { padding: 20px; }

.x-auth-window { max-width: 440px; }
.x-auth-content h2 { font-size: 24px; font-weight: 800; font-family: var(--font-display); margin-bottom: 20px; text-align: center; }

.x-auth-tabs {
  display: flex; border-radius: 9999px;
  background: rgba(255, 255, 255, 0.05); padding: 4px;
  margin-bottom: 20px; border: 1px solid var(--glass-border);
}

.x-auth-tab {
  flex: 1; padding: 8px 0; border-radius: 9999px;
  background: transparent; border: none;
  color: var(--x-text-secondary); font-weight: 700; font-size: 14px;
  cursor: pointer;
}

.x-auth-tab.active {
  background: var(--theme-gradient);
  color: #ffffff;
  box-shadow: 0 2px 10px var(--theme-glow);
}

.x-auth-form { display: flex; flex-direction: column; gap: 14px; }
.x-auth-form input {
  padding: 13px 16px; border-radius: 14px;
  background: rgba(255, 255, 255, 0.04);
  border: 1px solid var(--glass-border);
  color: var(--x-text-primary); font-size: 15px; outline: none;
}

.x-auth-form input:focus {
  border-color: var(--theme-accent);
  background: rgba(255, 255, 255, 0.08);
  box-shadow: 0 0 16px var(--theme-glow);
}

.x-btn-auth-submit {
  padding: 13px; border-radius: 9999px;
  background: var(--theme-gradient);
  color: #ffffff; border: none;
  font-size: 16px; font-weight: 800; font-family: var(--font-display);
  cursor: pointer; box-shadow: 0 6px 24px var(--theme-glow);
  margin-top: 6px;
}

/* Guest Banner */
.x-guest-banner {
  position: fixed; bottom: 0; left: 0; width: 100vw;
  background: rgba(18, 18, 24, 0.85);
  backdrop-filter: blur(28px) saturate(180%);
  border-top: 1px solid var(--theme-glow);
  padding: 14px 24px; z-index: 40;
}

.x-guest-banner-inner {
  max-width: 1200px; margin: 0 auto;
  display: flex; align-items: center; justify-content: space-between;
}

.x-guest-banner-text h3 { font-size: 18px; font-weight: 800; font-family: var(--font-display); }
.x-guest-banner-text p { font-size: 13px; color: var(--x-text-secondary); }
.x-guest-banner-actions { display: flex; gap: 12px; }

.x-btn-guest-login {
  padding: 9px 22px; border-radius: 9999px;
  background: transparent; border: 1px solid var(--glass-border-hover);
  color: var(--x-text-primary); font-weight: 700; cursor: pointer;
}

.x-btn-guest-register {
  padding: 9px 22px; border-radius: 9999px;
  background: var(--theme-gradient); border: none;
  color: #ffffff; font-weight: 700; cursor: pointer;
  box-shadow: 0 4px 16px var(--theme-glow);
}

/* Toast */
.toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 10000; display: flex; flex-direction: column; gap: 10px;
  pointer-events: none;
}

.toast {
  padding: 12px 20px; border-radius: 16px;
  background: rgba(20, 20, 28, 0.9);
  backdrop-filter: blur(24px);
  border: 1px solid var(--theme-accent);
  box-shadow: 0 8px 32px rgba(0, 0, 0, 0.7), 0 0 20px var(--theme-glow);
  color: #ffffff; font-size: 14px; font-weight: 600;
  pointer-events: auto;
}

.hidden { display: none !important; }

.x-spinner {
  width: 28px; height: 28px;
  border: 3px solid rgba(255, 255, 255, 0.15);
  border-top-color: var(--theme-accent);
  border-radius: 50%;
  animation: spin 0.8s linear infinite;
  margin: 36px auto;
}

@keyframes spin { to { transform: rotate(360deg); } }

/* Responsive */
@media (max-width: 1080px) {
  .x-right-sidebar { display: none; }
}

@media (max-width: 720px) {
  .x-left-nav { width: 68px; padding: 0 4px 16px 4px; }
  .x-nav-text, .x-btn-label, .x-pill-user-info, .x-pill-dots { display: none; }
  .x-btn-main-post { width: 48px; height: 48px; padding: 0; margin: 12px auto; border-radius: 50%; }
  .x-feather-svg { display: block; }
  .x-main-timeline { width: 100%; border-left: none; border-right: none; }
}