/* ===================================================================
   ATOMY — Cosmic AI Chatbot Interface
   Deep Space Minimalism / Dark Mode — Full Feature Set
   =================================================================== */

/* ----- Reset & Base ----- */
*, *::before, *::after {
  margin: 0;
  padding: 0;
  box-sizing: border-box;
}

:root {
  --bg-void: #050505;
  --bg-surface: rgba(255, 255, 255, 0.03);
  --bg-surface-hover: rgba(255, 255, 255, 0.06);
  --bg-surface-active: rgba(255, 255, 255, 0.09);
  --bg-glass: rgba(255, 255, 255, 0.04);
  --bg-glass-border: rgba(255, 255, 255, 0.08);

  --text-primary: #ffffff;
  --text-secondary: #eaeaea;
  --text-muted: rgba(255, 255, 255, 0.45);
  --text-dim: rgba(255, 255, 255, 0.25);

  --accent-glow: rgba(255, 255, 255, 0.15);
  --accent-glow-strong: rgba(255, 255, 255, 0.35);
  --accent-color: #a78bfa;
  --accent-color-dim: rgba(167, 139, 250, 0.15);
  --danger: #ef4444;

  --user-bubble: rgba(255, 255, 255, 0.08);
  --ai-bubble: rgba(255, 255, 255, 0.03);

  --radius-sm: 12px;
  --radius-md: 20px;
  --radius-lg: 24px;
  --radius-pill: 9999px;
  --radius-xl: 28px;

  --font-display: 'Space Grotesk', sans-serif;
  --font-body: 'Inter', sans-serif;

  --sidebar-width: 280px;

  --transition-fast: 0.2s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-smooth: 0.4s cubic-bezier(0.4, 0, 0.2, 1);
  --transition-spring: 0.5s cubic-bezier(0.34, 1.56, 0.64, 1);
}

/* ===== THEME: Nebula Purple ===== */
[data-theme="nebula"] {
  --bg-void: #0a0514;
  --bg-surface: rgba(167, 139, 250, 0.06);
  --bg-surface-hover: rgba(167, 139, 250, 0.1);
  --bg-surface-active: rgba(167, 139, 250, 0.15);
  --bg-glass: rgba(167, 139, 250, 0.04);
  --bg-glass-border: rgba(167, 139, 250, 0.12);
  --accent-color: #a78bfa;
  --accent-color-dim: rgba(167, 139, 250, 0.2);
  --user-bubble: rgba(167, 139, 250, 0.12);
}

/* ===== THEME: Aurora Green ===== */
[data-theme="aurora"] {
  --bg-void: #020e07;
  --bg-surface: rgba(52, 211, 153, 0.05);
  --bg-surface-hover: rgba(52, 211, 153, 0.08);
  --bg-surface-active: rgba(52, 211, 153, 0.12);
  --bg-glass: rgba(52, 211, 153, 0.04);
  --bg-glass-border: rgba(52, 211, 153, 0.1);
  --accent-color: #34d399;
  --accent-color-dim: rgba(52, 211, 153, 0.15);
  --user-bubble: rgba(52, 211, 153, 0.1);
}

/* ===== THEME: Solar Flare ===== */
[data-theme="solar"] {
  --bg-void: #0f0602;
  --bg-surface: rgba(251, 146, 60, 0.05);
  --bg-surface-hover: rgba(251, 146, 60, 0.08);
  --bg-surface-active: rgba(251, 146, 60, 0.12);
  --bg-glass: rgba(251, 146, 60, 0.04);
  --bg-glass-border: rgba(251, 146, 60, 0.1);
  --accent-color: #fb923c;
  --accent-color-dim: rgba(251, 146, 60, 0.15);
  --user-bubble: rgba(251, 146, 60, 0.1);
}

/* ===== THEME: Supernova Blue ===== */
[data-theme="supernova"] {
  --bg-void: #020a18;
  --bg-surface: rgba(56, 189, 248, 0.05);
  --bg-surface-hover: rgba(56, 189, 248, 0.08);
  --bg-surface-active: rgba(56, 189, 248, 0.12);
  --bg-glass: rgba(56, 189, 248, 0.04);
  --bg-glass-border: rgba(56, 189, 248, 0.1);
  --accent-color: #38bdf8;
  --accent-color-dim: rgba(56, 189, 248, 0.15);
  --user-bubble: rgba(56, 189, 248, 0.1);
}

/* ===== THEME: Rose Galaxy ===== */
[data-theme="rose"] {
  --bg-void: #0f0208;
  --bg-surface: rgba(244, 114, 182, 0.05);
  --bg-surface-hover: rgba(244, 114, 182, 0.08);
  --bg-surface-active: rgba(244, 114, 182, 0.12);
  --bg-glass: rgba(244, 114, 182, 0.04);
  --bg-glass-border: rgba(244, 114, 182, 0.1);
  --accent-color: #f472b6;
  --accent-color-dim: rgba(244, 114, 182, 0.15);
  --user-bubble: rgba(244, 114, 182, 0.1);
}

html {
  font-size: 16px;
  -webkit-font-smoothing: antialiased;
  -moz-osx-font-smoothing: grayscale;
}

body {
  font-family: var(--font-body);
  background: var(--bg-void);
  color: var(--text-secondary);
  min-height: 100vh;
  overflow: hidden;
  line-height: 1.6;
}

/* ----- Starfield Canvas ----- */
#starfield {
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
}

/* ----- App Shell ----- */
#app {
  position: relative;
  z-index: 1;
  width: 100%;
  height: 100vh;
}

/* ----- Screens ----- */
.screen {
  position: absolute;
  inset: 0;
  display: flex;
  flex-direction: column;
  opacity: 0;
  visibility: hidden;
  transition: opacity 0.6s ease, visibility 0.6s ease, transform 0.6s ease;
  transform: scale(0.98);
}

.screen.active {
  opacity: 1;
  visibility: visible;
  transform: scale(1);
}

/* =============================================
   AUTH SCREENS
   ============================================= */
.auth-container {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 2rem;
}

.auth-card {
  width: 100%;
  max-width: 420px;
  text-align: center;
  animation: fadeInUp 0.8s ease both;
}

.auth-logo-wrap {
  display: flex;
  justify-content: center;
  margin-bottom: 1.5rem;
}

.auth-logo {
  width: 80px;
  height: 80px;
  filter: drop-shadow(0 0 20px rgba(255,255,255,0.06));
  animation: logoFloat 6s ease-in-out infinite;
}

.auth-brand {
  font-family: var(--font-display);
  font-size: 2.2rem;
  font-weight: 700;
  color: var(--text-primary);
  margin-bottom: 0.35rem;
  letter-spacing: -0.02em;
}

.auth-subtitle {
  color: var(--text-muted);
  font-size: 0.92rem;
  margin-bottom: 2rem;
  font-weight: 300;
}

/* Form */
.auth-form {
  display: flex;
  flex-direction: column;
  gap: 1rem;
  text-align: left;
}

.form-group {
  display: flex;
  flex-direction: column;
  gap: 0.4rem;
}

.form-group label {
  font-size: 0.82rem;
  color: var(--text-muted);
  font-weight: 500;
  letter-spacing: 0.02em;
}

.form-group input {
  background: var(--bg-surface);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.8rem 1rem;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.92rem;
  outline: none;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.form-group input::placeholder {
  color: var(--text-dim);
}

.form-group input:focus {
  border-color: rgba(255,255,255,0.2);
  box-shadow: 0 0 15px rgba(255,255,255,0.04);
}

.btn-full {
  width: 100%;
  justify-content: center;
  margin-top: 0.5rem;
}

/* Divider */
.auth-divider {
  display: flex;
  align-items: center;
  gap: 1rem;
  margin: 1.5rem 0;
  color: var(--text-dim);
  font-size: 0.78rem;
}

.auth-divider::before,
.auth-divider::after {
  content: '';
  flex: 1;
  height: 1px;
  background: var(--bg-glass-border);
}

/* Social */
.auth-social {
  display: flex;
  gap: 0.75rem;
}

.btn-social {
  flex: 1;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 0.5rem;
  padding: 0.75rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.85rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-social:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255,255,255,0.15);
}

/* Switch */
.auth-switch {
  margin-top: 1.5rem;
  font-size: 0.85rem;
  color: var(--text-muted);
}

.auth-switch a {
  color: var(--text-primary);
  text-decoration: none;
  font-weight: 500;
  transition: opacity var(--transition-fast);
}

.auth-switch a:hover {
  opacity: 0.8;
}

/* =============================================
   MAIN APP LAYOUT
   ============================================= */
.app-layout {
  display: flex;
  height: 100vh;
  width: 100%;
}

/* =============================================
   SIDEBAR
   ============================================= */
.sidebar {
  width: var(--sidebar-width);
  height: 100%;
  display: flex;
  flex-direction: column;
  background: rgba(8, 8, 8, 0.95);
  border-right: 1px solid var(--bg-glass-border);
  flex-shrink: 0;
  z-index: 20;
  transition: transform var(--transition-smooth);
}

.sidebar-header {
  padding: 1rem;
  display: flex;
  flex-direction: column;
  gap: 0.75rem;
  border-bottom: 1px solid var(--bg-glass-border);
}

.sidebar-brand {
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.sidebar-logo {
  width: 28px;
  height: 28px;
}

.sidebar-title {
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 1.1rem;
  color: var(--text-primary);
}

.btn-new-chat {
  background: var(--text-primary);
  color: #000;
  padding: 0.65rem 1.2rem;
  font-size: 0.84rem;
  width: 100%;
  justify-content: center;
}

.btn-new-chat:hover {
  box-shadow: 0 0 20px rgba(255,255,255,0.2);
  transform: translateY(-1px);
}

/* Search */
.sidebar-search {
  padding: 0.75rem 1rem;
  display: flex;
  align-items: center;
  gap: 0.5rem;
  border-bottom: 1px solid var(--bg-glass-border);
  color: var(--text-dim);
}

.sidebar-search input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.82rem;
}

.sidebar-search input::placeholder {
  color: var(--text-dim);
}

/* History List */
.chat-history {
  flex: 1;
  overflow-y: auto;
  padding: 0.5rem;
}

.history-section-label {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.75rem 0.75rem 0.35rem;
  font-weight: 600;
}

.history-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.75rem;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  position: relative;
}

.history-item:hover {
  background: var(--bg-surface-hover);
}

.history-item.active {
  background: var(--bg-surface-active);
}

.history-item-icon {
  flex-shrink: 0;
  color: var(--text-dim);
}

.history-item-text {
  flex: 1;
  font-size: 0.84rem;
  color: var(--text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item-delete {
  opacity: 0;
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px;
  border-radius: 6px;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  display: flex;
  align-items: center;
  justify-content: center;
}

.history-item:hover .history-item-delete {
  opacity: 1;
}

.history-item-delete:hover {
  color: var(--danger);
  background: rgba(239, 68, 68, 0.1);
}

.history-empty {
  padding: 2rem 1rem;
  text-align: center;
  color: var(--text-dim);
  font-size: 0.82rem;
  line-height: 1.6;
}

/* Sidebar Footer / User */
.sidebar-footer {
  position: relative;
  padding: 0.75rem;
  border-top: 1px solid var(--bg-glass-border);
}

.user-profile-btn {
  width: 100%;
  display: flex;
  align-items: center;
  gap: 0.6rem;
  padding: 0.6rem 0.5rem;
  background: transparent;
  border: 1px solid transparent;
  border-radius: var(--radius-sm);
  cursor: pointer;
  transition: all var(--transition-fast);
  color: var(--text-secondary);
  font-family: var(--font-body);
}

.user-profile-btn:hover {
  background: var(--bg-surface-hover);
  border-color: var(--bg-glass-border);
}

.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: linear-gradient(135deg, rgba(255,255,255,0.15), rgba(255,255,255,0.05));
  border: 1px solid rgba(255,255,255,0.12);
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.8rem;
  color: var(--text-primary);
  flex-shrink: 0;
}

.user-info {
  flex: 1;
  text-align: left;
  display: flex;
  flex-direction: column;
}

.user-name {
  font-size: 0.84rem;
  font-weight: 500;
  color: var(--text-primary);
}

.user-plan {
  font-size: 0.7rem;
  color: var(--text-dim);
}

/* User Menu Dropdown */
.user-menu {
  position: absolute;
  bottom: calc(100% + 4px);
  left: 0.75rem;
  right: 0.75rem;
  background: rgba(15, 15, 15, 0.98);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  padding: 0.35rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 -8px 30px rgba(0,0,0,0.4);
  animation: menuAppear 0.2s ease;
  z-index: 50;
}

.user-menu.hidden {
  display: none;
}

.menu-item {
  display: flex;
  align-items: center;
  gap: 0.6rem;
  width: 100%;
  padding: 0.6rem 0.75rem;
  background: transparent;
  border: none;
  border-radius: 8px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.84rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-item:hover {
  background: var(--bg-surface-hover);
}

.menu-item-danger {
  color: var(--danger);
}
.menu-item-danger:hover {
  background: rgba(239, 68, 68, 0.08);
}

.menu-divider {
  height: 1px;
  background: var(--bg-glass-border);
  margin: 0.25rem 0;
}

/* Sidebar Overlay (mobile) */
.sidebar-overlay {
  display: none;
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.6);
  z-index: 19;
}

.sidebar-overlay.show {
  display: block;
}

/* =============================================
   CHAT AREA
   ============================================= */
.chat-area {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* -- Header -- */
.chat-header {
  display: flex;
  align-items: center;
  padding: 0.75rem 1.25rem;
  gap: 0.75rem;
  border-bottom: 1px solid var(--bg-glass-border);
  background: rgba(5, 5, 5, 0.8);
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  z-index: 10;
  flex-shrink: 0;
}

.header-brand {
  flex: 1;
  display: flex;
  align-items: center;
}

.header-title {
  font-family: var(--font-body);
  font-weight: 600;
  font-size: 1rem;
  color: var(--text-primary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 0.75rem;
}

.header-status {
  display: flex;
  align-items: center;
  gap: 0.4rem;
}

.status-dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: #4ade80;
  animation: statusPulse 2s ease-in-out infinite;
}

.status-text {
  font-size: 0.78rem;
  color: var(--text-muted);
  font-weight: 400;
}

.btn-model {
  display: flex;
  align-items: center;
  gap: 0.4rem;
  padding: 0.4rem 0.8rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-pill);
  color: var(--text-muted);
  font-family: var(--font-body);
  font-size: 0.78rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.btn-model:hover {
  border-color: rgba(255,255,255,0.15);
  color: var(--text-secondary);
}

.model-select-wrapper {
  position: relative;
}


.model-menu {
  position: absolute;
  top: calc(100% + 8px);
  right: 0;
  width: 260px;
  background: rgba(15, 15, 15, 0.98);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-md);
  padding: 0.5rem;
  backdrop-filter: blur(20px);
  -webkit-backdrop-filter: blur(20px);
  box-shadow: 0 8px 30px rgba(0,0,0,0.8);
  z-index: 1000;
  animation: menuAppear 0.2s ease;
}

.model-menu.hidden {
  display: none;
}

.model-group-title {
  font-size: 0.7rem;
  color: var(--text-dim);
  text-transform: uppercase;
  letter-spacing: 0.08em;
  padding: 0.5rem 0.5rem 0.25rem;
  font-weight: 600;
}

.menu-item-model {
  display: flex;
  align-items: center;
  justify-content: space-between;
  width: 100%;
  padding: 0.5rem;
  background: transparent;
  border: none;
  border-radius: 6px;
  color: var(--text-secondary);
  font-family: var(--font-body);
  font-size: 0.84rem;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.menu-item-model:hover {
  background: var(--bg-surface-hover);
}

.menu-item-model.active {
  background: var(--bg-surface-active);
  color: var(--text-primary);
}

.btn-icon {
  background: transparent;
  border: 1px solid var(--bg-glass-border);
  color: var(--text-secondary);
  width: 38px;
  height: 38px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-icon:hover {
  background: var(--bg-surface-hover);
  border-color: rgba(255,255,255,0.15);
}

/* -- Messages -- */
.messages-container {
  flex: 1;
  overflow-y: auto;
  padding: 1.5rem;
  display: flex;
  flex-direction: column;
  gap: 0.5rem;
  scroll-behavior: smooth;
}

/* Welcome empty state */
.empty-state {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  gap: 1rem;
  padding: 2rem;
  animation: fadeInUp 0.8s ease both;
}

.empty-state-logo {
  width: 64px;
  height: 64px;
  opacity: 0.3;
}

.empty-state h2 {
  font-family: var(--font-display);
  font-size: 1.5rem;
  font-weight: 600;
  color: var(--text-primary);
  opacity: 0.7;
}

.empty-state p {
  color: var(--text-dim);
  font-size: 0.88rem;
  max-width: 400px;
}

.suggestions {
  display: flex;
  flex-wrap: wrap;
  gap: 0.5rem;
  margin-top: 0.5rem;
  justify-content: center;
  max-width: 600px;
}

.suggestion-chip {
  background: var(--bg-surface);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-pill);
  padding: 0.55rem 1.1rem;
  font-size: 0.82rem;
  color: var(--text-muted);
  cursor: pointer;
  font-family: var(--font-body);
  transition: all var(--transition-fast);
  white-space: nowrap;
}

.suggestion-chip:hover {
  color: var(--text-primary);
  border-color: rgba(255,255,255,0.2);
  background: var(--bg-surface-hover);
  box-shadow: 0 0 15px rgba(255,255,255,0.05);
}

/* Message Rows */
.message {
  display: flex;
  gap: 0.75rem;
  max-width: 85%;
  animation: messageAppear 0.5s ease both;
  opacity: 0;
  position: relative;
}

.message.user {
  align-self: flex-end;
  flex-direction: row-reverse;
}

.message.ai {
  align-self: flex-start;
}

.msg-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-family: var(--font-display);
  font-weight: 600;
  font-size: 0.75rem;
  flex-shrink: 0;
  margin-top: 4px;
}

.message.ai .msg-avatar {
  background: var(--bg-surface);
  color: var(--text-primary);
  border: 1px solid var(--bg-glass-border);
  width: 36px;
  height: 36px;
}
.message.ai .msg-avatar svg {
  width: 20px;
  height: 20px;
}

.message.user .msg-avatar {
  background: var(--text-primary);
  color: #000;
}

.msg-body {
  display: flex;
  flex-direction: column;
  gap: 0.3rem;
  min-width: 0;
}

.msg-content {
  padding: 0.85rem 1.15rem;
  border-radius: var(--radius-md);
  line-height: 1.65;
  font-size: 0.92rem;
}

/* ===== SWEEP TEXT: LEFT TO RIGHT ===== */
.thinking-text {
  background: linear-gradient(
    90deg, 
    #ffffff 0%, 
    #ffffff 35%, 
    #000000 50%, 
    #ffffff 65%, 
    #ffffff 100%
  );
  background-size: 200% 100%;
  color: transparent;
  -webkit-background-clip: text;
  background-clip: text;
  animation: shineWipe 2.5s ease-in-out infinite;
  display: inline;
}

@keyframes shineWipe {
  0%   { background-position: 100% center; }
  100% { background-position: -100% center; }
}

.message.ai .msg-content {
  background: transparent;
  border: none;
  color: var(--text-secondary);
  padding-left: 0;
  padding-top: 0.25rem;
  line-height: 1.8;
  font-size: 0.95rem;
}

.message.user .msg-content {
  background: var(--user-bubble);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-md);
  color: var(--text-primary);
}

/* Message Actions */
.msg-actions {
  display: flex;
  gap: 0.25rem;
  opacity: 0;
  transition: opacity var(--transition-fast);
  padding-left: 0.25rem;
}

.message:hover .msg-actions {
  opacity: 1;
}

.msg-action-btn {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 4px 6px;
  border-radius: 6px;
  display: flex;
  align-items: center;
  gap: 0.3rem;
  font-family: var(--font-body);
  font-size: 0.72rem;
  transition: all var(--transition-fast);
}

.msg-action-btn:hover {
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
}

.msg-action-btn.copied {
  color: #4ade80;
}

/* =============================================
   SEARCH RESULTS IN CHAT
   ============================================= */
.search-results-card {
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-sm);
  margin-bottom: 0.5rem;
  overflow: hidden;
  animation: messageAppear 0.4s ease both;
}

.search-results-header {
  display: flex;
  align-items: center;
  gap: 0.5rem;
  padding: 0.6rem 0.85rem;
  background: rgba(255, 255, 255, 0.02);
  border-bottom: 1px solid rgba(255, 255, 255, 0.04);
  cursor: pointer;
  user-select: none;
  transition: background var(--transition-fast);
}

.search-results-header:hover {
  background: rgba(255, 255, 255, 0.05);
}

.search-results-header svg {
  color: var(--accent-color);
  flex-shrink: 0;
}

.search-results-header .search-label {
  font-size: 0.78rem;
  font-weight: 600;
  color: var(--text-muted);
  flex: 1;
}

.search-results-header .search-count {
  font-size: 0.7rem;
  color: var(--text-dim);
  background: rgba(255, 255, 255, 0.06);
  padding: 0.15rem 0.5rem;
  border-radius: var(--radius-pill);
}

.search-results-header .toggle-arrow {
  color: var(--text-dim);
  transition: transform 0.2s;
  flex-shrink: 0;
}

.search-results-header.collapsed .toggle-arrow {
  transform: rotate(-90deg);
}

.search-results-list {
  padding: 0.35rem;
  display: flex;
  flex-direction: column;
  gap: 0.2rem;
  max-height: 220px;
  overflow-y: auto;
}

.search-results-list.collapsed {
  display: none;
}

.search-result-item {
  display: block;
  padding: 0.55rem 0.65rem;
  border-radius: 8px;
  text-decoration: none;
  transition: background var(--transition-fast);
}

.search-result-item:hover {
  background: rgba(255, 255, 255, 0.04);
}

.search-result-title {
  font-size: 0.82rem;
  font-weight: 500;
  color: var(--accent-color);
  margin-bottom: 0.15rem;
  display: -webkit-box;
  -webkit-line-clamp: 1;
  line-clamp: 1;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-result-snippet {
  font-size: 0.75rem;
  color: var(--text-dim);
  line-height: 1.4;
  display: -webkit-box;
  -webkit-line-clamp: 2;
  line-clamp: 2;
  -webkit-box-orient: vertical;
  overflow: hidden;
}

.search-result-url {
  font-size: 0.68rem;
  color: rgba(255, 255, 255, 0.15);
  margin-top: 0.15rem;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Image Results Grid */
.image-results-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.5rem;
  padding: 0.5rem;
  margin-bottom: 0.5rem;
  animation: messageAppear 0.4s ease both;
}

.image-result-item {
  position: relative;
  border-radius: 10px;
  overflow: hidden;
  aspect-ratio: 4/3;
  background: rgba(255, 255, 255, 0.03);
  border: 1px solid var(--bg-glass-border);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.image-result-item:hover {
  border-color: var(--accent-color);
  transform: scale(1.02);
}

.image-result-item img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.image-result-item .image-source {
  position: absolute;
  bottom: 0;
  left: 0;
  right: 0;
  padding: 0.3rem 0.5rem;
  background: linear-gradient(transparent, rgba(0,0,0,0.8));
  font-size: 0.62rem;
  color: rgba(255,255,255,0.7);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

/* Search badge in AI message */
.search-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.3rem;
  padding: 0.2rem 0.55rem;
  background: var(--accent-color-dim);
  border: 1px solid rgba(255,255,255,0.08);
  border-radius: var(--radius-pill);
  font-size: 0.68rem;
  color: var(--accent-color);
  font-weight: 500;
  margin-bottom: 0.35rem;
}

.search-badge svg {
  width: 12px;
  height: 12px;
}

/* -- Search Toggle Button -- */
.btn-search-toggle {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  position: relative;
}

.btn-search-toggle:hover {
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
}

.btn-search-toggle.active {
  color: var(--accent-color);
  background: var(--accent-color-dim);
}

.btn-search-toggle.active::after {
  content: '';
  position: absolute;
  bottom: 2px;
  right: 2px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--accent-color);
  box-shadow: 0 0 6px var(--accent-color);
}

/* -- Input Bar -- */
.chat-input-bar {
  padding: 0.75rem 1.5rem 1rem;
  flex-shrink: 0;
  background: transparent;
}

.input-wrap {
  display: flex;
  align-items: flex-end;
  gap: 0.5rem;
  background: var(--bg-surface);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-xl);
  padding: 0.4rem 0.5rem 0.4rem 0.5rem;
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-wrap:focus-within {
  border-color: rgba(255,255,255,0.18);
  box-shadow: 0 0 20px rgba(255,255,255,0.05);
}

.btn-attach {
  background: transparent;
  border: none;
  color: var(--text-dim);
  cursor: pointer;
  padding: 0.5rem;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: all var(--transition-fast);
  flex-shrink: 0;
}

.btn-attach:hover {
  color: var(--text-secondary);
  background: var(--bg-surface-hover);
}

.chat-input {
  flex: 1;
  background: transparent;
  border: none;
  outline: none;
  color: var(--text-primary);
  font-family: var(--font-body);
  font-size: 0.95rem;
  resize: none;
  max-height: 120px;
  line-height: 1.5;
  padding: 0.45rem 0;
}

.chat-input::placeholder {
  color: var(--text-dim);
}

/* ----- Buttons ----- */
.btn-pill {
  display: inline-flex;
  align-items: center;
  gap: 0.5rem;
  border: none;
  border-radius: var(--radius-pill);
  cursor: pointer;
  font-family: var(--font-body);
  font-weight: 500;
  letter-spacing: 0.02em;
  transition: all var(--transition-smooth);
  position: relative;
  overflow: hidden;
}

.btn-pill::before {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: inherit;
  opacity: 0;
  transition: opacity var(--transition-smooth);
}

.btn-rect {
  border-radius: 8px;
  padding: 0.8rem 1.5rem;
  font-size: 0.95rem;
  font-weight: 600;
}

.btn-primary {
  background: var(--text-primary);
  color: #000;
  padding: 0.9rem 2.6rem;
  font-size: 0.94rem;
}

.btn-primary::before {
  background: rgba(255,255,255,0.2);
  box-shadow: 0 0 40px rgba(255,255,255,0.3), 0 0 80px rgba(255,255,255,0.1);
}

.btn-primary:hover {
  transform: translateY(-2px);
  box-shadow: 0 0 30px rgba(255,255,255,0.25), 0 4px 20px rgba(255,255,255,0.1);
}
.btn-primary:hover::before { opacity: 1; }

.btn-primary:active {
  transform: translateY(0) scale(0.98);
}

.btn-send {
  background: transparent;
  color: var(--text-dim);
  width: 36px;
  height: 36px;
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  border: none;
  cursor: default;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  padding: 0;
}

.btn-send.active {
  background: var(--text-primary);
  color: #000;
  cursor: pointer;
}

.btn-send.active:hover {
  box-shadow: 0 0 15px rgba(255,255,255,0.25);
  transform: scale(1.05);
}

.btn-send.active:active {
  transform: scale(0.95);
}

.btn-send:disabled {
  opacity: 0.5;
  cursor: default;
  box-shadow: none;
  transform: none;
}

.input-hint {
  text-align: center;
  font-size: 0.72rem;
  color: var(--text-dim);
  margin-top: 0.5rem;
  letter-spacing: 0.01em;
}

/* =============================================
   ANIMATIONS & LOGO
   ============================================= */
.orbit {
  animation: orbitPulse 4s ease-in-out infinite alternate;
}
.orbit-2 { animation-delay: 0.5s; }
.orbit-3 { animation-delay: 1s; }

.galaxy-nucleus {
  animation: nucleusSpin 12s linear infinite;
  transform-origin: 100px 100px;
}

/* =============================================
   SCROLLBAR
   ============================================= */
.messages-container::-webkit-scrollbar,
.chat-history::-webkit-scrollbar { width: 4px; }

.messages-container::-webkit-scrollbar-track,
.chat-history::-webkit-scrollbar-track { background: transparent; }

.messages-container::-webkit-scrollbar-thumb,
.chat-history::-webkit-scrollbar-thumb {
  background: rgba(255,255,255,0.08);
  border-radius: 10px;
}

.messages-container::-webkit-scrollbar-thumb:hover,
.chat-history::-webkit-scrollbar-thumb:hover {
  background: rgba(255,255,255,0.15);
}

.messages-container, .chat-history {
  scrollbar-width: thin;
  scrollbar-color: rgba(255,255,255,0.08) transparent;
}

/* =============================================
   KEYFRAMES
   ============================================= */
@keyframes fadeInUp {
  from { opacity: 0; transform: translateY(30px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes messageAppear {
  from { opacity: 0; transform: translateY(14px) scale(0.97); }
  to { opacity: 1; transform: translateY(0) scale(1); }
}

@keyframes logoFloat {
  0%, 100% { transform: translateY(0); }
  50% { transform: translateY(-8px); }
}

@keyframes orbitPulse {
  0% { opacity: 0.5; }
  100% { opacity: 1; }
}

@keyframes nucleusSpin {
  from { transform: rotate(0deg); }
  to { transform: rotate(360deg); }
}

@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.4; }
  30% { transform: translateY(-5px); opacity: 1; }
}

@keyframes statusPulse {
  0%, 100% { opacity: 1; box-shadow: 0 0 0 0 rgba(74, 222, 128, 0.4); }
  50% { opacity: 0.7; box-shadow: 0 0 0 4px rgba(74, 222, 128, 0); }
}

@keyframes menuAppear {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}

/* toast */
.toast {
  position: fixed;
  bottom: 2rem;
  left: 50%;
  transform: translateX(-50%) translateY(20px);
  background: rgba(20, 20, 20, 0.95);
  border: 1px solid var(--bg-glass-border);
  border-radius: var(--radius-pill);
  padding: 0.6rem 1.2rem;
  font-size: 0.82rem;
  color: var(--text-secondary);
  z-index: 100;
  backdrop-filter: blur(12px);
  opacity: 0;
  transition: all 0.3s ease;
  pointer-events: none;
}

.toast.show {
  opacity: 1;
  transform: translateX(-50%) translateY(0);
}

/* =============================================
   MODAL
   ============================================= */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.7);
  backdrop-filter: blur(5px);
  -webkit-backdrop-filter: blur(5px);
  z-index: 1000;
  display: flex;
  align-items: center;
  justify-content: center;
  opacity: 1;
  transition: opacity 0.3s ease;
}

.modal-overlay.hidden {
  opacity: 0;
  pointer-events: none;
}

.modal-overlay.hidden .modal {
  transform: scale(0.95) translateY(10px);
}

.modal {
  background: rgba(18, 18, 22, 0.95);
  backdrop-filter: blur(16px);
  border: 1px solid rgba(255, 255, 255, 0.1);
  border-radius: var(--radius-lg);
  width: 100%;
  max-width: 480px;
  display: flex;
  flex-direction: column;
  transition: transform 0.3s cubic-bezier(0.34, 1.56, 0.64, 1);
  box-shadow: 0 20px 60px rgba(0,0,0,0.8);
  overflow: hidden;
}

.modal-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 1.25rem 1.5rem;
  border-bottom: 1px solid var(--bg-glass-border);
  background: rgba(255,255,255,0.02);
}

.modal-header h2 {
  font-size: 1.25rem;
  font-family: var(--font-display);
  font-weight: 600;
  color: var(--text-primary);
  letter-spacing: -0.5px;
}

.modal-body {
  padding: 1.5rem;
  overflow-y: auto;
  max-height: 60vh;
  scrollbar-width: none; /* Firefox */
}
.modal-body::-webkit-scrollbar {
  display: none; /* Chrome/Safari */
}

/* =============================================
   RE-DESIGNED SETTINGS MODAL
   ============================================= */
.settings-x-modal {
  width: 95%;
  max-width: 860px;
  background: #000000;
  border-radius: 24px;
  border: 1px solid rgba(255, 255, 255, 0.1);
  box-shadow: 0 40px 100px -20px rgba(0, 0, 0, 1), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

.settings-x-body {
  display: flex;
  min-height: 520px;
}

/* Settings Sidebar Navigation */
.settings-sidebar {
  width: 220px;
  border-right: 1px solid rgba(255, 255, 255, 0.06);
  padding: 1rem 0.75rem;
  display: flex;
  flex-direction: column;
  gap: 0.25rem;
}

.settings-nav-item {
  display: flex;
  align-items: center;
  gap: 0.75rem;
  padding: 0.7rem 1rem;
  background: transparent;
  border: none;
  border-radius: 10px;
  color: rgba(255,255,255,0.45);
  font-family: var(--font-body);
  font-size: 0.88rem;
  font-weight: 500;
  cursor: pointer;
  transition: all 0.2s;
}

.settings-nav-item:hover {
  background: rgba(255,255,255,0.04);
  color: rgba(255,255,255,0.7);
}

.settings-nav-item.active {
  background: rgba(255, 255, 255, 0.08);
  color: #ffffff;
}

/* Settings Content Area */
.settings-content {
  flex: 1;
  padding: 1.5rem 2rem;
  overflow-y: auto;
  display: none;
}

.settings-content.active {
  display: block;
}

.settings-section-title {
  font-family: var(--font-display);
  font-size: 1.1rem;
  font-weight: 600;
  color: var(--text-primary);
  margin-bottom: 0.25rem;
}

.settings-section-desc {
  font-size: 0.82rem;
  color: var(--text-dim);
  margin-bottom: 1.5rem;
}

.settings-row {
  display: flex;
  justify-content: space-between;
  align-items: center;
  padding: 1rem 0;
}

.avatar-row {
  margin-bottom: 0.5rem;
}

.settings-row-left {
  display: flex;
  align-items: center;
  gap: 1rem;
}

.settings-avatar {
  width: 48px;
  height: 48px;
  background: linear-gradient(135deg, var(--accent-color), rgba(255,255,255,0.1));
  border-radius: 50%;
  display: flex;
  align-items: center;
  justify-content: center;
  font-weight: bold;
  font-size: 1.3rem;
  color: #fff;
  box-shadow: 0 4px 20px rgba(0,0,0,0.3);
}

.settings-user-info {
  display: flex;
  flex-direction: column;
}

.settings-user-info .name {
  font-size: 1rem;
  font-weight: 700;
  color: #e7e9ea;
}

.settings-user-info .email {
  font-size: 0.82rem;
  color: rgba(255,255,255,0.35);
}

.btn-outline {
  padding: 0.5rem 1.25rem;
  background: transparent;
  border: 1px solid rgba(255,255,255,0.15);
  border-radius: 999px;
  color: #eff3f4;
  font-weight: 600;
  font-size: 0.85rem;
  cursor: pointer;
  transition: all 0.2s;
  font-family: var(--font-body);
}

.btn-outline:hover {
  background: rgba(239, 243, 244, 0.08);
  border-color: rgba(255,255,255,0.25);
}

.settings-divider {
  height: 1px;
  background: rgba(255, 255, 255, 0.06);
  margin: 0.5rem 0;
}

.settings-label {
  font-size: 0.92rem;
  color: #e7e9ea;
  font-weight: 500;
}

.settings-label-sub {
  font-size: 0.78rem;
  color: rgba(255,255,255,0.3);
  margin-top: 2px;
}

.settings-select-inline {
  background: transparent;
  color: #eff3f4;
  border: 1px solid rgba(255,255,255,0.12);
  border-radius: 10px;
  padding: 0.5rem 2.5rem 0.5rem 1rem;
  font-size: 0.88rem;
  font-weight: 500;
  outline: none;
  cursor: pointer;
  appearance: none;
  background-image: url("data:image/svg+xml,%3Csvg width='12' height='12' viewBox='0 0 24 24' fill='none' stroke='white' stroke-width='2' stroke-linecap='round' stroke-linejoin='round'%3E%3Cpath d='M6 9l6 6 6-6'/%3E%3C/svg%3E");
  background-repeat: no-repeat;
  background-position: right 0.75rem center;
  transition: all 0.2s;
  font-family: var(--font-body);
}

.settings-select-inline:hover {
  background-color: rgba(255,255,255,0.04);
  border-color: rgba(255,255,255,0.2);
}

.settings-select-inline option {
  background: #111;
  color: #eff3f4;
}

/* Theme Picker */
.theme-grid {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 0.75rem;
  margin-top: 0.75rem;
}

.theme-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 0.5rem;
  padding: 0.85rem 0.5rem;
  background: rgba(255,255,255,0.03);
  border: 2px solid transparent;
  border-radius: 14px;
  cursor: pointer;
  transition: all 0.25s;
  font-family: var(--font-body);
}

.theme-card:hover {
  background: rgba(255,255,255,0.06);
  border-color: rgba(255,255,255,0.1);
}

.theme-card.active {
  border-color: var(--accent-color);
  background: var(--accent-color-dim);
}

.theme-preview {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: 2px solid rgba(255,255,255,0.1);
  position: relative;
  overflow: hidden;
}

.theme-preview::after {
  content: '';
  position: absolute;
  inset: 0;
  border-radius: 50%;
}

.theme-card .theme-name {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.5);
  font-weight: 500;
  text-align: center;
}

.theme-card.active .theme-name {
  color: var(--text-primary);
}

/* Specific theme preview colors */
.theme-preview[data-preview="midnight"] {
  background: radial-gradient(circle at 30% 30%, rgba(255,255,255,0.15), #050505);
}
.theme-preview[data-preview="nebula"] {
  background: radial-gradient(circle at 30% 30%, #a78bfa, #0a0514);
}
.theme-preview[data-preview="aurora"] {
  background: radial-gradient(circle at 30% 30%, #34d399, #020e07);
}
.theme-preview[data-preview="solar"] {
  background: radial-gradient(circle at 30% 30%, #fb923c, #0f0602);
}
.theme-preview[data-preview="supernova"] {
  background: radial-gradient(circle at 30% 30%, #38bdf8, #020a18);
}
.theme-preview[data-preview="rose"] {
  background: radial-gradient(circle at 30% 30%, #f472b6, #0f0208);
}

/* Settings Footer Branding */
.settings-footer {
  padding: 1rem 2rem 1.25rem;
  border-top: 1px solid rgba(255,255,255,0.04);
  display: flex;
  align-items: center;
  gap: 0.5rem;
}

.settings-footer-text {
  font-size: 0.72rem;
  color: rgba(255,255,255,0.2);
}

.settings-footer svg {
  color: rgba(255,255,255,0.15);
}

/* Heart badge/spot for the settings */
.heart-badge {
  display: inline-flex;
  align-items: center;
  gap: 0.35rem;
  padding: 0.3rem 0.65rem;
  background: rgba(244, 114, 182, 0.1);
  border: 1px solid rgba(244, 114, 182, 0.2);
  border-radius: var(--radius-pill);
  font-size: 0.72rem;
  color: #f472b6;
  font-weight: 500;
  animation: heartPulse 2s ease-in-out infinite;
}

@keyframes heartPulse {
  0%, 100% { transform: scale(1); }
  50% { transform: scale(1.05); }
}

/* Settings mobile responsive */
@media (max-width: 768px) {
  .settings-x-modal {
    max-width: 100%;
    border-radius: 16px;
    margin: 0.5rem;
  }
  .settings-x-body {
    flex-direction: column;
    min-height: auto;
    max-height: 75vh;
  }
  .settings-sidebar {
    width: 100%;
    border-right: none;
    border-bottom: 1px solid rgba(255,255,255,0.06);
    flex-direction: row;
    overflow-x: auto;
    padding: 0.75rem;
    gap: 0.25rem;
  }
  .settings-nav-item {
    white-space: nowrap;
    padding: 0.55rem 0.85rem;
    font-size: 0.82rem;
  }
  .settings-content {
    padding: 1rem;
  }
  .settings-row {
    flex-direction: column;
    align-items: flex-start;
    gap: 0.75rem;
  }
  .btn-outline {
    width: 100%;
    text-align: center;
  }
  .theme-grid {
    grid-template-columns: repeat(2, 1fr);
  }
}

.mt-2 { margin-top: 1rem; }

.modal-footer {
  padding: 1.25rem 1.5rem;
  border-top: 1px solid var(--bg-glass-border);
  display: flex;
  justify-content: flex-end;
  background: rgba(255,255,255,0.02);
}


/* =============================================
   RESPONSIVE
   ============================================= */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    left: 0;
    top: 0;
    bottom: 0;
    transform: translateX(-100%);
    z-index: 25;
  }

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

  .chat-header { padding: 0.65rem 1rem; }
  .messages-container { padding: 1rem; }
  .chat-input-bar { padding: 0.5rem 0.75rem 0.75rem; }
  .message { max-width: 92%; }

  .header-status { display: none; }
}

@media (min-width: 769px) {
  #sidebarToggle { display: none; }
}

@media (min-width: 1200px) {
  .messages-container {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
  }
  .chat-input-bar {
    max-width: 800px;
    margin: 0 auto;
    width: 100%;
    padding-left: 0;
    padding-right: 0;
  }
}