:root {
  --bg: #0E1325;
  --surface: #11182B;
  --elev: #0B1121;
  --text: #E7EBF3;
  --muted: #A9B3C9;
  --brand: #4F8BFF;
  --teal: #22D3EE;
  --accent: #FF7A59;
  --success: #22C55E;
  --warning: #F59E0B;
  --danger: #EF4444;
  --ring: color-mix(in oklab, var(--brand) 55%, white);
  --border: rgba(255, 255, 255, .10);
  --border-2: rgba(255, 255, 255, .06);
  --shadow: 0 8px 28px rgba(0, 0, 0, .35), 0 2px 12px rgba(0, 0, 0, .25);
  --radius: 14px;
  --r-sm: 10px;
  --r-xs: 8px;
  --gap: 14px;
  --pad: 16px;
  --t-100: 120ms cubic-bezier(.2, .8, .2, 1);
  --t-200: 200ms cubic-bezier(.2, .8, .2, 1);
  --t-300: 300ms cubic-bezier(.2, .8, .2, 1);
}

@media (prefers-reduced-motion: reduce) {
  *, *::before, *::after {
    animation-duration: 0.01ms !important;
    animation-iteration-count: 1 !important;
    transition-duration: 0.01ms !important;
  }
}

* {
  box-sizing: border-box;
}

html, body {
  height: 100%;
  margin: 0;
}

body {
  background: radial-gradient(1200px 600px at 10% -10%, rgba(79, 139, 255, .10), transparent 60%),
              radial-gradient(1000px 600px at 90% 110%, rgba(34, 211, 238, .10), transparent 60%),
              var(--bg);
  color: var(--text);
  font-family: Inter, system-ui, -apple-system, Segoe UI, Roboto, "Helvetica Neue", Arial, "Noto Sans";
  overflow-x: hidden;
}

/* Animations */
@keyframes fadeIn {
  from { opacity: 0; transform: translateY(10px); }
  to { opacity: 1; transform: translateY(0); }
}

@keyframes slideIn {
  from { opacity: 0; transform: translateX(-20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes slideInRight {
  from { opacity: 0; transform: translateX(20px); }
  to { opacity: 1; transform: translateX(0); }
}

@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.9); }
  to { opacity: 1; transform: scale(1); }
}

@keyframes bounce {
  0%, 80%, 100% { transform: translateY(0); opacity: .6; }
  40% { transform: translateY(-5px); opacity: 1; }
}

@keyframes pulse {
  0%, 100% { opacity: 1; }
  50% { opacity: .5; }
}

@keyframes shimmer {
  0% { background-position: -200% center; }
  100% { background-position: 200% center; }
}

@keyframes float {
  0%, 100% { transform: translateY(0px); }
  50% { transform: translateY(-10px); }
}

@keyframes glow {
  0%, 100% { box-shadow: 0 0 5px rgba(79, 139, 255, .3); }
  50% { box-shadow: 0 0 20px rgba(79, 139, 255, .6), 0 0 30px rgba(79, 139, 255, .4); }
}

@keyframes particle {
  0% { transform: translate(0, 0) scale(1); opacity: 0; }
  50% { opacity: 1; }
  100% { transform: translate(var(--tx), var(--ty)) scale(0); opacity: 0; }
}

.fade-in { animation: fadeIn 0.4s var(--t-200) backwards; }
.slide-in { animation: slideIn 0.4s var(--t-200) backwards; }
.slide-in-right { animation: slideInRight 0.4s var(--t-200) backwards; }
.scale-in { animation: scaleIn 0.3s var(--t-200) backwards; }
.motion-pop { animation: scaleIn 0.3s var(--t-200) backwards; }

/* Header */
.app-header {
  position: sticky;
  top: 0;
  z-index: 5;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 16px;
  background: linear-gradient(180deg, #0F172A, #0B1020);
  border-bottom: 1px solid var(--border-2);
  box-shadow: var(--shadow);
  backdrop-filter: blur(10px);
}

.brand {
  display: flex;
  align-items: center;
  gap: 12px;
}

.title {
  margin: 0;
  font-size: 20px;
  color: white;
  font-weight: 700;
  background: linear-gradient(135deg, #fff, var(--brand));
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}

.badge {
  color: var(--brand);
  background: color-mix(in oklab, var(--brand) 14%, transparent);
  border: 1px solid color-mix(in oklab, var(--brand) 40%, transparent);
  padding: 6px 10px;
  border-radius: 999px;
  font-weight: 700;
  font-size: 12px;
  letter-spacing: .3px;
}

.badge.pulse {
  animation: pulse 2s ease-in-out infinite;
}

.shimmer {
  background: linear-gradient(90deg, var(--brand) 0%, #7BA3FF 50%, var(--brand) 100%);
  background-size: 200% auto;
  animation: shimmer 3s linear infinite;
  color: white !important;
}

.search {
  display: flex;
  align-items: center;
  gap: 8px;
  background: rgba(255, 255, 255, .06);
  padding: 6px 8px;
  border-radius: 10px;
  border: 1px solid var(--border);
  transition: all var(--t-200);
}

.search:focus-within {
  background: rgba(255, 255, 255, .10);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(79, 139, 255, .1);
}

.search input {
  background: transparent;
  border: 0;
  color: var(--text);
  outline: none;
  min-width: 160px;
  font-size: 14px;
}

.header-actions {
  display: flex;
  align-items: center;
  gap: 10px;
}

.avatar-wrapper {
  position: relative;
}

.avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid rgba(255, 255, 255, .1);
  object-fit: cover;
}

.avatar.glow {
  animation: glow 3s ease-in-out infinite;
}

.status-dot {
  position: absolute;
  bottom: 0;
  right: 0;
  width: 10px;
  height: 10px;
  background: var(--success);
  border: 2px solid var(--bg);
  border-radius: 50%;
  animation: pulse 2s ease-in-out infinite;
}

/* Shell */
.app-shell {
  display: grid;
  grid-template-columns: 280px 1fr 320px;
  gap: var(--gap);
  padding: var(--gap);
}

/* Sidebar */
.sidebar {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  padding: var(--pad);
  min-height: calc(100dvh - 92px);
  box-shadow: var(--shadow);
  display: flex;
  flex-direction: column;
  gap: 20px;
  transition: transform var(--t-300);
}

.sidebar-section {
  flex: 1;
}

.section-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-bottom: 10px;
}

.section-title {
  margin: 0;
  color: var(--muted);
  font-size: 12px;
  letter-spacing: .12em;
  text-transform: uppercase;
  font-weight: 600;
}

.chat-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.chat-item {
  padding: 10px 12px;
  border-radius: var(--r-sm);
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--t-100);
  display: flex;
  align-items: center;
  gap: 10px;
  position: relative;
  overflow: hidden;
}

.chat-item::before {
  content: '';
  position: absolute;
  left: 0;
  top: 0;
  width: 3px;
  height: 100%;
  background: var(--brand);
  transform: scaleY(0);
  transition: transform var(--t-200);
}

.chat-item:hover {
  background: rgba(255, 255, 255, .04);
  border-color: var(--border-2);
  transform: translateX(4px);
}

.chat-item:hover::before {
  transform: scaleY(1);
}

.chat-item.active {
  background: linear-gradient(180deg, #0E162C, #0D1526);
  border-color: rgba(99, 102, 241, .35);
}

.chat-item.active::before {
  transform: scaleY(1);
}

.chat-item-content {
  flex: 1;
  min-width: 0;
}

.chat-item-title {
  font-weight: 600;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-item-sub {
  color: var(--muted);
  font-size: 12px;
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.chat-item-meta {
  display: flex;
  align-items: center;
  gap: 8px;
}

.chat-item-meta .js-delete-chat {
  opacity: 0;
  transition: opacity var(--t-200);
}

.chat-item:hover .js-delete-chat {
  opacity: 1;
}

.pill.unread {
  background: #3045A6;
  color: #CFE0FF;
  border: 1px solid #3A57D1;
  padding: 2px 8px;
  border-radius: 999px;
  font-size: 12px;
  font-weight: 600;
}

.pill.unread.bounce {
  animation: bounce 1s ease-in-out;
}

.pin-list {
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
}

.chip {
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  color: var(--text);
  padding: 6px 12px;
  border-radius: 999px;
  font-size: 12px;
  cursor: pointer;
  transition: all var(--t-200);
  display: flex;
  align-items: center;
  gap: 6px;
}

.chip:hover {
  background: rgba(255, 255, 255, .10);
  border-color: var(--brand);
  transform: translateY(-2px);
}

.chip[aria-pressed="true"] {
  background: color-mix(in oklab, var(--brand) 20%, transparent);
  border-color: var(--brand);
}

.sidebar-footer {
  margin-top: auto;
  padding-top: 16px;
  border-top: 1px solid var(--border-2);
}

/* Chat Area */
.chat-area {
  background: var(--elev);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  display: flex;
  flex-direction: column;
  min-height: calc(100dvh - 92px);
  box-shadow: var(--shadow);
  position: relative;
  overflow: hidden;
}

.chat-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--border-2);
  background: linear-gradient(180deg, rgba(255, 255, 255, .02), transparent);
}

.thread-title {
  margin: 0;
  font-size: 16px;
  font-weight: 600;
}

.presence {
  color: var(--muted);
  font-size: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.presence-text {
  font-weight: 500;
}

.dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  display: inline-block;
  background: var(--muted);
}

.dot.online {
  background: var(--success);
}

.dot.pulse-dot {
  animation: pulse 2s ease-in-out infinite;
}

.thread-actions {
  display: flex;
  gap: 8px;
}

/* Assistant banner */
.assistant-banner {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px 14px;
  border-bottom: 1px solid var(--border-2);
  background: linear-gradient(135deg, rgba(79, 139, 255, .12), rgba(34, 211, 238, .08));
  position: relative;
  overflow: hidden;
}

.particles {
  position: absolute;
  inset: 0;
  pointer-events: none;
}

.particle {
  position: absolute;
  width: 4px;
  height: 4px;
  background: var(--brand);
  border-radius: 50%;
  animation: particle 3s ease-in-out infinite;
}

.particle:nth-child(1) {
  left: 20%;
  top: 20%;
  --tx: 30px;
  --ty: -40px;
  animation-delay: 0s;
}

.particle:nth-child(2) {
  left: 60%;
  top: 40%;
  --tx: -25px;
  --ty: -50px;
  animation-delay: 1s;
}

.particle:nth-child(3) {
  left: 80%;
  top: 60%;
  --tx: 20px;
  --ty: 35px;
  animation-delay: 2s;
}

.banner-text {
  display: flex;
  flex-direction: column;
  z-index: 1;
}

.banner-title {
  font-weight: 700;
  font-size: 15px;
}

.banner-sub {
  color: var(--muted);
  font-size: 12px;
}

.suggestions {
  margin-left: auto;
  display: flex;
  gap: 8px;
  flex-wrap: wrap;
  z-index: 1;
}

.sugg {
  padding: 7px 12px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .08);
  backdrop-filter: blur(10px);
  color: var(--text);
  cursor: pointer;
  font-size: 12px;
  transition: all var(--t-200);
  font-weight: 500;
}

.sugg:hover {
  background: rgba(255, 255, 255, .15);
  border-color: var(--brand);
  transform: translateY(-2px);
  box-shadow: 0 4px 12px rgba(79, 139, 255, .2);
}

/* Messages */
.messages {
  flex: 1;
  overflow: auto;
  padding: 16px;
  display: flex;
  flex-direction: column;
  gap: 10px;
  scroll-behavior: smooth;
}

.messages::-webkit-scrollbar {
  width: 8px;
}

.messages::-webkit-scrollbar-track {
  background: transparent;
}

.messages::-webkit-scrollbar-thumb {
  background: rgba(255, 255, 255, .1);
  border-radius: 4px;
}

.messages::-webkit-scrollbar-thumb:hover {
  background: rgba(255, 255, 255, .2);
}

.group {
  display: flex;
  flex-direction: column;
  gap: 6px;
}

.group.me .msg {
  flex-direction: row-reverse;
}

.msg {
  display: flex;
  gap: 10px;
  align-items: flex-start;
}

.bubble {
  background: rgba(255, 255, 255, .05);
  border: 1px solid var(--border);
  padding: 10px 12px;
  border-radius: 14px;
  max-width: min(680px, 82%);
  box-shadow: 0 1px 0 rgba(0, 0, 0, .25) inset;
  position: relative;
  transition: all var(--t-200);
}

.bubble:hover {
  background: rgba(255, 255, 255, .08);
  transform: translateY(-1px);
}

.group.me .bubble {
  background: linear-gradient(180deg, color-mix(in oklab, var(--brand) 16%, transparent), transparent 70%), rgba(255, 255, 255, .08);
  border: 1px solid color-mix(in oklab, var(--brand) 50%, transparent);
}

.meta {
  display: flex;
  align-items: baseline;
  gap: 8px;
  margin-bottom: 4px;
}

.name {
  font-weight: 600;
  font-size: 14px;
}

time {
  color: var(--muted);
  font-size: 12px;
}

.code {
  background: rgba(0, 0, 0, .35);
  border: 1px solid rgba(255, 255, 255, .1);
  padding: 10px;
  border-radius: 10px;
  overflow: auto;
  margin: 8px 0;
  font-family: 'Courier New', monospace;
  font-size: 13px;
  line-height: 1.5;
}

.with-actions {
  padding-bottom: 36px;
}

.bubble-actions {
  position: absolute;
  right: 8px;
  bottom: 6px;
  display: flex;
  gap: 4px;
  opacity: 0;
  transform: translateY(4px);
  transition: all var(--t-200);
}

.bubble:hover .bubble-actions {
  opacity: 1;
  transform: translateY(0);
}

.icon-btn.xs {
  width: 28px;
  height: 28px;
  border-radius: 8px;
  font-size: 14px;
  padding: 0;
  display: grid;
  place-items: center;
}

.icon-btn.xs:hover {
  background: rgba(255, 255, 255, .15);
}

.icon-btn.xs.liked {
  background: rgba(34, 197, 94, .2);
  color: var(--success);
}

.icon-btn.xs.disliked {
  background: rgba(239, 68, 68, .2);
  color: var(--danger);
}

.status {
  display: flex;
  gap: 4px;
  margin-top: 6px;
  justify-content: flex-end;
}

.tick {
  width: 16px;
  height: 10px;
  position: relative;
  display: inline-block;
}

.tick::before, .tick::after {
  content: "";
  position: absolute;
  left: 0;
  top: 50%;
  height: 2px;
  background: #77B6FF;
  border-radius: 2px;
  transition: all var(--t-200);
}

.tick::before {
  width: 8px;
  transform: translateY(-50%) rotate(40deg);
  left: 2px;
}

.tick::after {
  width: 12px;
  transform: translate(6px, -50%) rotate(-40deg);
}

.tick.delivered::after {
  background: #A8E4FF;
}

.tick.read::after {
  background: #22D3EE;
}

.day-sep {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  opacity: .85;
  margin: 8px 0 2px;
}

.day-sep span {
  font-size: 11px;
  color: var(--muted);
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  padding: 4px 12px;
  border-radius: 999px;
  font-weight: 500;
}

/* Typing indicator */
.typing-banner {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 8px 16px 10px;
  color: var(--muted);
}

.dots {
  display: flex;
  gap: 6px;
}

.dot-el {
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: color-mix(in oklab, var(--brand) 60%, white);
  animation: bounce 1.2s infinite ease-in-out;
}

.dot-el:nth-child(2) {
  animation-delay: .15s;
}

.dot-el:nth-child(3) {
  animation-delay: .3s;
}

/* Composer */
.composer {
  display: flex;
  align-items: center;
  gap: 12px;
  padding: 12px;
  border-top: 1px solid var(--border-2);
  background: linear-gradient(180deg, rgba(255, 255, 255, .02), transparent);
  padding-bottom: calc(12px + env(safe-area-inset-bottom));
}

.tools {
  display: flex;
  gap: 6px;
  position: relative;
}

.sheet {
  position: absolute;
  bottom: 48px;
  left: 0;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 8px;
  box-shadow: var(--shadow);
  transform: translateY(6px) scale(0.95);
  opacity: 0;
  pointer-events: none;
  transition: all var(--t-200);
  min-width: 180px;
  z-index: 10;
}

.sheet.open {
  transform: translateY(0) scale(1);
  opacity: 1;
  pointer-events: auto;
}

.sheet-item {
  display: flex;
  align-items: center;
  gap: 10px;
  width: 100%;
  text-align: left;
  padding: 10px 12px;
  border-radius: 10px;
  background: transparent;
  border: 1px solid transparent;
  color: var(--text);
  transition: all var(--t-100);
  cursor: pointer;
  font-size: 14px;
}

.sheet-item:hover {
  background: rgba(255, 255, 255, .06);
  border-color: var(--border-2);
  transform: translateX(4px);
}

.emoji-grid {
  display: grid;
  grid-template-columns: repeat(6, 1fr);
  gap: 6px;
}

.emoji {
  font-size: 20px;
  padding: 8px;
  border-radius: 8px;
  background: transparent;
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--t-100);
}

.emoji:hover {
  background: rgba(255, 255, 255, .10);
  border-color: var(--border-2);
  transform: scale(1.2);
}

.send {
  flex: 1;
  display: flex;
  gap: 10px;
  background: rgba(255, 255, 255, .06);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 6px;
  align-items: center;
  transition: all var(--t-200);
}

.send:focus-within {
  background: rgba(255, 255, 255, .10);
  border-color: var(--brand);
  box-shadow: 0 0 0 3px rgba(79, 139, 255, .1);
}

.send input {
  flex: 1;
  background: transparent;
  border: 0;
  outline: 0;
  color: var(--text);
  padding: 8px 10px;
  font-size: 14px;
}

.send-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 10px 16px;
}

/* Details */
.details {
  background: var(--surface);
  border: 1px solid var(--border-2);
  border-radius: var(--radius);
  min-height: calc(100dvh - 92px);
  box-shadow: var(--shadow);
}

.details-inner {
  padding: var(--pad);
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.details-inner h3, .details-inner h4 {
  margin: 0;
  font-size: 14px;
  font-weight: 600;
  color: var(--text);
}

.info-list {
  list-style: none;
  padding: 0;
  margin: 0;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.info-list li {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 10px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  transition: all var(--t-200);
}

.info-list li:hover {
  background: rgba(255, 255, 255, .06);
  transform: translateX(4px);
}

.info-list .label {
  color: var(--muted);
  display: flex;
  align-items: center;
  gap: 8px;
  font-size: 13px;
}

.info-list .value {
  font-weight: 600;
}

.quick-actions {
  display: flex;
  flex-direction: column;
  gap: 8px;
}

.theme-selector {
  display: grid;
  grid-template-columns: repeat(3, 1fr);
  gap: 8px;
}

.theme-option {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 6px;
  padding: 10px;
  background: rgba(255, 255, 255, .03);
  border: 1px solid var(--border-2);
  border-radius: var(--r-sm);
  cursor: pointer;
  transition: all var(--t-200);
  font-size: 12px;
  color: var(--muted);
}

.theme-option:hover {
  background: rgba(255, 255, 255, .08);
  border-color: var(--brand);
}

.theme-option.active {
  background: color-mix(in oklab, var(--brand) 15%, transparent);
  border-color: var(--brand);
  color: var(--text);
}

.theme-preview {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  border: 2px solid var(--border);
}

.dark-preview {
  background: linear-gradient(135deg, #0E1325, #11182B);
}

.light-preview {
  background: linear-gradient(135deg, #f5f5f5, #ffffff);
}

.auto-preview {
  background: linear-gradient(90deg, #0E1325 50%, #f5f5f5 50%);
}

/* Buttons */
.pill-btn {
  padding: 10px 14px;
  border-radius: 999px;
  border: 1px solid var(--border);
  background: rgba(255, 255, 255, .04);
  color: var(--text);
  cursor: pointer;
  transition: all var(--t-200);
  font-size: 14px;
  font-weight: 500;
  display: inline-flex;
  align-items: center;
  gap: 8px;
}

.pill-btn:hover {
  transform: translateY(-2px);
  background: rgba(255, 255, 255, .08);
  box-shadow: 0 4px 12px rgba(0, 0, 0, .2);
}

.pill-btn.primary {
  background: linear-gradient(180deg, var(--brand), color-mix(in oklab, var(--brand) 70%, black));
  border-color: color-mix(in oklab, var(--brand) 80%, black);
  color: white;
  box-shadow: 0 2px 8px rgba(79, 139, 255, .3);
}

.pill-btn.primary:hover {
  box-shadow: 0 4px 16px rgba(79, 139, 255, .4);
}

.pill-btn.subtle {
  background: rgba(255, 255, 255, .05);
}

.pill-btn.full {
  width: 100%;
  justify-content: center;
}

.icon-btn {
  width: 40px;
  height: 40px;
  display: grid;
  place-items: center;
  border-radius: 10px;
  background: rgba(255, 255, 255, .06);
  color: var(--text);
  border: 1px solid var(--border);
  cursor: pointer;
  transition: all var(--t-200);
  padding: 0;
}

.icon-btn:hover {
  background: rgba(255, 255, 255, .12);
  transform: translateY(-2px);
  border-color: var(--brand);
}

.icon-btn:active {
  transform: translateY(0);
}

/* Toast */
.toast {
  position: fixed;
  left: 50%;
  bottom: 18px;
  transform: translateX(-50%) translateY(12px);
  background: rgba(20, 26, 46, .98);
  backdrop-filter: blur(10px);
  color: var(--text);
  border: 1px solid var(--border);
  padding: 12px 18px;
  border-radius: 12px;
  opacity: 0;
  pointer-events: none;
  transition: all var(--t-300);
  z-index: 1000;
  box-shadow: var(--shadow);
  font-size: 14px;
  font-weight: 500;
}

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

/* Notification prompt */
.notification-prompt {
  position: fixed;
  top: 80px;
  right: 20px;
  background: var(--surface);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 16px;
  box-shadow: var(--shadow);
  transform: translateX(400px);
  opacity: 0;
  transition: all var(--t-300);
  z-index: 100;
  max-width: 360px;
}

.notification-prompt.show {
  transform: translateX(0);
  opacity: 1;
}

.notif-content {
  display: flex;
  align-items: flex-start;
  gap: 12px;
}

.notif-content svg {
  color: var(--brand);
  flex-shrink: 0;
}

.notif-title {
  font-weight: 600;
  font-size: 14px;
  margin-bottom: 4px;
}

.notif-sub {
  font-size: 12px;
  color: var(--muted);
  margin-bottom: 12px;
}

.notif-actions {
  display: flex;
  gap: 8px;
  margin-left: auto;
  flex-shrink: 0;
}

/* Responsive */
@media (max-width: 1180px) {
  .app-shell {
    grid-template-columns: 260px 1fr;
  }
  .details {
    display: none;
  }
}

@media (max-width: 780px) {
  .app-shell {
    grid-template-columns: 1fr;
    padding: 10px;
  }
  
  .sidebar {
    position: fixed;
    inset: 62px auto 0 0;
    width: 86%;
    max-width: 360px;
    transform: translateX(-100%);
    transition: transform var(--t-300);
    z-index: 6;
    box-shadow: var(--shadow);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .chat-area {
    min-height: calc(100dvh - 82px);
  }
  
  .composer {
    position: sticky;
    bottom: 0;
  }
  
  .search {
    display: none;
  }
  
  .assistant-banner {
    flex-direction: column;
    align-items: flex-start;
  }
  
  .suggestions {
    margin-left: 0;
    width: 100%;
  }
  
  .thread-actions {
    flex-wrap: wrap;
  }
  
  .header-actions .pill-btn span {
    display: none;
  }
  
  .notification-prompt {
    left: 10px;
    right: 10px;
    max-width: none;
  }
}

@media (max-width: 480px) {
  .app-header {
    padding: 10px 12px;
  }
  
  .brand {
    gap: 8px;
  }
  
  .title {
    font-size: 18px;
  }
  
  .badge {
    display: none;
  }
  
  .composer {
    flex-wrap: wrap;
  }
  
  .tools {
    order: 2;
    width: 100%;
    justify-content: space-around;
  }
  
  .send {
    order: 1;
    width: 100%;
  }
}