/* Final app polish and code workspace panel */
.sidebar-brand {
  gap: 10px;
}

.sidebar-brand-copy {
  flex: 1 1 auto;
  width: auto;
  min-width: 0;
  transform: translateX(-4px);
}

.sidebar-collapse-btn {
  width: 36px;
  height: 36px;
  flex: 0 0 36px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(226, 232, 240, 0.14);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.06);
  color: rgba(226, 232, 240, 0.78);
  cursor: pointer;
  margin-right: -27px;
  transition: background 180ms ease, border-color 180ms ease, color 180ms ease, transform 180ms ease;
}

.sidebar-collapse-icon {
  display: block;
  width: 22px;
  height: 22px;
}

.sidebar-collapse-btn:hover,
.sidebar-collapse-btn:focus-visible {
  border-color: rgba(96, 165, 250, 0.42);
  background: rgba(96, 165, 250, 0.16);
  color: #ffffff;
  transform: scale(1.04);
}

body:not(.dark-mode) .sidebar-collapse-btn {
  border-color: rgba(15, 23, 42, 0.12);
  background: rgba(255, 255, 255, 0.86);
  color: #334155;
}

body:not(.dark-mode) .sidebar-collapse-btn:hover,
body:not(.dark-mode) .sidebar-collapse-btn:focus-visible {
  border-color: rgba(37, 99, 235, 0.34);
  background: #ffffff;
  color: #1d4ed8;
}

body.sidebar-collapsed .sidebar {
  display: none;
}

body.sidebar-collapsed .main-content {
  width: 100%;
  flex-basis: 100%;
}

body.sidebar-collapsed #menu-btn {
  display: inline-flex;
}

/* Modern shell refresh */
.sidebar {
  border-right: 1px solid rgba(148, 163, 184, 0.14);
}

.sidebar-header {
  padding-top: 18px;
}

.new-chat-btn {
  border-radius: 14px;
  box-shadow: 0 12px 28px rgba(15, 23, 42, 0.24);
}

.new-chat-btn-inner {
  min-height: 48px;
  border-radius: 12px;
}

.sidebar-nav {
  gap: 6px;
}

.sidebar-nav-item {
  min-height: 42px;
  padding: 10px 12px;
  border: 1px solid transparent;
  border-radius: 12px;
  transition: background 160ms ease, border-color 160ms ease, color 160ms ease, transform 160ms ease;
}

.sidebar-nav-item i {
  width: 22px;
  font-size: 16px;
  opacity: 0.9;
}

.sidebar-nav-item:hover,
.sidebar-nav-item.active {
  border-color: rgba(148, 163, 184, 0.16);
  background: rgba(255, 255, 255, 0.075);
  transform: translateX(2px);
}

.conversation-item {
  border-radius: 12px;
  transition: background 160ms ease, transform 160ms ease, color 160ms ease;
}

.conversation-item:hover,
.conversation-item.active {
  transform: translateX(2px);
}

.chat-header {
  height: 68px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  background: rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(18px);
}

body.dark-mode .chat-header {
  background: rgba(11, 18, 32, 0.78);
  border-bottom-color: rgba(148, 163, 184, 0.14);
}

.menu-btn,
#open-settings-btn,
.memory-quick-btn {
  min-width: 38px;
  min-height: 38px;
  border-radius: 12px;
  border: 1px solid rgba(148, 163, 184, 0.2);
  background: rgba(255, 255, 255, 0.72);
  color: #334155;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

.menu-btn:hover,
.menu-btn:focus-visible,
#open-settings-btn:hover,
#open-settings-btn:focus-visible,
.memory-quick-btn:hover,
.memory-quick-btn:focus-visible {
  border-color: var(--model-accent-border);
  background: #ffffff;
  color: var(--primary);
  transform: translateY(-1px);
}

body.dark-mode .menu-btn,
body.dark-mode #open-settings-btn,
body.dark-mode .memory-quick-btn {
  border-color: rgba(148, 163, 184, 0.16);
  background: rgba(15, 23, 42, 0.72);
  color: #dbeafe;
  box-shadow: 0 10px 26px rgba(2, 6, 23, 0.34);
}

.credit-counter {
  border-radius: 16px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.78), rgba(255, 255, 255, 0.58)),
    var(--input-sheen);
  border-color: var(--model-accent-border);
  box-shadow: var(--input-glow);
}

body.dark-mode .credit-counter {
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.84), rgba(15, 23, 42, 0.68)),
    var(--input-sheen);
  border-color: var(--model-accent-border);
}

.chat-container {
  background:
    linear-gradient(180deg, rgba(248, 250, 252, 0.98), rgba(241, 245, 249, 0.96));
}

body.dark-mode .chat-container {
  background:
    linear-gradient(180deg, rgba(11, 18, 32, 0.98), rgba(15, 23, 42, 0.98));
}

.message-text {
  border: 1px solid rgba(148, 163, 184, 0.16);
  border-radius: 18px;
  box-shadow: 0 12px 32px rgba(15, 23, 42, 0.07);
}

.assistant-message .message-text {
  border-bottom-left-radius: 8px;
  background: rgba(255, 255, 255, 0.88);
}

.user-message .message-text {
  border-bottom-right-radius: 8px;
  background: var(--gradient);
  color: #ffffff;
  border-color: rgba(255, 255, 255, 0.26);
}

body.dark-mode .assistant-message .message-text {
  background: rgba(15, 23, 42, 0.86);
  border-color: rgba(148, 163, 184, 0.14);
  box-shadow: 0 16px 36px rgba(2, 6, 23, 0.34);
}

.input-container {
  padding: 16px 20px 18px;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(248, 250, 252, 0.86);
  backdrop-filter: blur(18px);
  box-shadow: 0 -16px 40px rgba(15, 23, 42, 0.06);
}

body.dark-mode .input-container {
  background: rgba(11, 18, 32, 0.78);
  border-top-color: rgba(148, 163, 184, 0.12);
  box-shadow: 0 -18px 44px rgba(2, 6, 23, 0.32);
}

.input-box {
  max-width: 880px;
}

.input-toolbar {
  flex-wrap: nowrap;
}

.quick-model-switcher {
  position: relative;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  margin-left: auto;
  min-height: 54px;
  padding: 6px;
  border: 1px solid var(--model-accent-border);
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.92), rgba(248, 250, 252, 0.78)),
    radial-gradient(circle at 18% 16%, var(--model-accent-soft), transparent 34%),
    radial-gradient(circle at 92% 72%, var(--focus-ring-color), transparent 36%);
  box-shadow: 0 18px 40px rgba(15, 23, 42, 0.12), inset 0 1px 0 rgba(255, 255, 255, 0.82);
  backdrop-filter: blur(20px);
  isolation: isolate;
  overflow: visible;
}

.quick-model-switcher::before {
  content: '';
  position: absolute;
  inset: -1px;
  border-radius: inherit;
  background: var(--gradient);
  opacity: 0;
  filter: blur(12px);
  transform: scale(0.98);
  transition: opacity 180ms ease, transform 180ms ease;
  z-index: -1;
}

.quick-model-switcher::after {
  content: '';
  width: 4px;
  align-self: stretch;
  min-height: 38px;
  border-radius: 999px;
  background: linear-gradient(180deg, var(--primary), var(--accent));
  box-shadow: 0 0 16px var(--model-accent-border);
  order: -1;
}

.quick-model-switcher:hover::before,
.quick-model-switcher.open::before {
  opacity: 0.62;
  transform: scale(1);
}

.quick-model-label {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  color: #0f172a;
}

.quick-model-icon {
  width: 40px;
  height: 40px;
  flex: 0 0 40px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border: 1px solid rgba(255, 255, 255, 0.52);
  border-radius: 15px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.18), transparent),
    var(--gradient);
  color: #ffffff;
  box-shadow: 0 14px 26px var(--model-accent-soft);
  position: relative;
}

.quick-model-icon::after {
  content: '';
  position: absolute;
  right: 6px;
  top: 6px;
  width: 7px;
  height: 7px;
  border: 2px solid rgba(255, 255, 255, 0.84);
  border-radius: 999px;
  background: #22c55e;
}

.quick-model-copy {
  display: flex;
  flex-direction: column;
  min-width: 0;
  line-height: 1.1;
}

.quick-model-copy span {
  color: #2563eb;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.quick-model-copy strong {
  max-width: 96px;
  overflow: hidden;
  color: #0f172a;
  font-size: 12px;
  font-weight: 800;
  letter-spacing: 0;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-model-trigger {
  min-width: 122px;
  height: 40px;
  display: inline-flex;
  align-items: center;
  justify-content: space-between;
  gap: 8px;
  padding: 0 10px 0 12px;
  border: 1px solid rgba(15, 23, 42, 0.08);
  border-radius: 15px;
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(30, 41, 59, 0.9)),
    radial-gradient(circle at 20% 18%, rgba(96, 165, 250, 0.28), transparent 35%);
  color: #0f172a;
  cursor: pointer;
  font: inherit;
  font-size: 13px;
  font-weight: 800;
  outline: none;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.12), 0 12px 24px rgba(15, 23, 42, 0.18);
  transition: border-color 180ms ease, background 180ms ease, box-shadow 180ms ease, transform 180ms ease;
}

.quick-model-trigger span {
  max-width: 82px;
  overflow: hidden;
  color: #f8fafc;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-model-trigger i {
  width: 22px;
  height: 22px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  flex: 0 0 22px;
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.12);
  color: #dbeafe;
  font-size: 11px;
  transition: transform 160ms ease, background 180ms ease, color 180ms ease;
}

.quick-model-switcher.open .quick-model-trigger i {
  transform: rotate(180deg);
}

.quick-model-trigger:hover,
.quick-model-trigger:focus-visible {
  border-color: var(--model-accent-border);
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.98), rgba(30, 41, 59, 0.94)),
    radial-gradient(circle at 20% 18%, var(--focus-ring-color), transparent 35%);
  box-shadow: 0 0 0 4px var(--model-accent-soft), 0 16px 30px rgba(15, 23, 42, 0.2);
  transform: translateY(-2px);
}

.quick-model-trigger:hover i,
.quick-model-trigger:focus-visible i {
  background: rgba(255, 255, 255, 0.18);
  color: #ffffff;
}

.quick-model-menu {
  position: absolute;
  right: 0;
  bottom: calc(100% + 10px);
  width: min(304px, calc(100vw - 32px));
  max-height: 330px;
  display: grid;
  gap: 6px;
  padding: 8px;
  border: 1px solid var(--model-accent-border);
  border-radius: 20px;
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.94), rgba(248, 250, 252, 0.9)),
    radial-gradient(circle at 14% 10%, var(--model-accent-soft), transparent 34%);
  box-shadow: 0 32px 80px rgba(15, 23, 42, 0.24), inset 0 1px 0 rgba(255, 255, 255, 0.84);
  backdrop-filter: blur(24px);
  opacity: 0;
  overflow-y: auto;
  pointer-events: none;
  transform: translateY(10px) scale(0.97);
  transform-origin: bottom right;
  transition: opacity 160ms ease, transform 160ms ease;
  z-index: 500;
}

.quick-model-switcher.open .quick-model-menu {
  opacity: 1;
  pointer-events: auto;
  transform: translateY(0) scale(1);
}

.quick-model-option {
  width: 100%;
  min-height: 44px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 10px;
  padding: 9px 10px 9px 13px;
  border: 1px solid transparent;
  border-radius: 15px;
  background: transparent;
  color: #0f172a;
  cursor: pointer;
  font: inherit;
  text-align: left;
  position: relative;
  transition: border-color 160ms ease, background 160ms ease, transform 160ms ease;
}

.quick-model-option::before {
  content: '';
  width: 6px;
  height: 6px;
  flex: 0 0 6px;
  border-radius: 999px;
  background: rgba(148, 163, 184, 0.65);
  box-shadow: none;
  order: -1;
}

.quick-model-option:hover,
.quick-model-option:focus-visible,
.quick-model-option.active {
  border-color: rgba(27, 108, 255, 0.18);
  background:
    linear-gradient(135deg, rgba(27, 108, 255, 0.12), rgba(0, 168, 135, 0.08)),
    rgba(255, 255, 255, 0.58);
  outline: none;
}

.quick-model-option.active::before {
  background: #22c55e;
  box-shadow: 0 0 14px rgba(34, 197, 94, 0.56);
}

.quick-model-option:hover,
.quick-model-option:focus-visible {
  transform: translateX(2px);
}

.quick-model-option span {
  overflow: hidden;
  font-size: 13px;
  font-weight: 800;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.quick-model-option em {
  flex: 0 0 auto;
  padding: 4px 7px;
  border-radius: 999px;
  background: rgba(15, 23, 42, 0.06);
  color: #475569;
  font-size: 10px;
  font-style: normal;
  font-weight: 900;
  letter-spacing: 0.04em;
  text-transform: uppercase;
}

.quick-model-option em.pro {
  background: linear-gradient(135deg, rgba(124, 58, 237, 0.16), rgba(27, 108, 255, 0.12));
  color: #5b21b6;
  border: 1px solid rgba(124, 58, 237, 0.14);
}

body.dark-mode .quick-model-switcher {
  border-color: rgba(96, 165, 250, 0.2);
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.92), rgba(2, 6, 23, 0.82)),
    radial-gradient(circle at 18% 16%, rgba(96, 165, 250, 0.2), transparent 34%),
    radial-gradient(circle at 92% 72%, rgba(16, 185, 129, 0.14), transparent 36%);
  box-shadow: 0 18px 38px rgba(2, 6, 23, 0.36), inset 0 1px 0 rgba(255, 255, 255, 0.06);
}

body.dark-mode .quick-model-label,
body.dark-mode .quick-model-copy strong {
  color: #f8fafc;
}

body.dark-mode .quick-model-copy span {
  color: #93c5fd;
}

body.dark-mode .quick-model-icon {
  border-color: rgba(255, 255, 255, 0.16);
  background:
    linear-gradient(135deg, rgba(255, 255, 255, 0.16), transparent),
    linear-gradient(135deg, #2563eb, #059669 58%, #7c3aed);
  color: #ffffff;
  box-shadow: 0 12px 24px rgba(37, 99, 235, 0.24);
}

body.dark-mode .quick-model-trigger {
  border-color: rgba(96, 165, 250, 0.18);
  background:
    linear-gradient(135deg, rgba(2, 6, 23, 0.94), rgba(15, 23, 42, 0.92)),
    radial-gradient(circle at 20% 18%, rgba(96, 165, 250, 0.26), transparent 35%);
  color: #f8fafc;
  box-shadow: inset 0 1px 0 rgba(255, 255, 255, 0.08), 0 10px 22px rgba(2, 6, 23, 0.26);
}

body.dark-mode .quick-model-trigger i {
  background: rgba(148, 163, 184, 0.12);
  color: #cbd5e1;
}

body.dark-mode .quick-model-trigger:hover,
body.dark-mode .quick-model-trigger:focus-visible {
  border-color: rgba(96, 165, 250, 0.38);
  background:
    linear-gradient(135deg, rgba(2, 6, 23, 0.98), rgba(30, 41, 59, 0.92)),
    radial-gradient(circle at 20% 18%, rgba(96, 165, 250, 0.34), transparent 35%);
  box-shadow: 0 0 0 4px rgba(96, 165, 250, 0.1), 0 14px 28px rgba(2, 6, 23, 0.34);
}

body.dark-mode .quick-model-trigger:hover i,
body.dark-mode .quick-model-trigger:focus-visible i {
  background: rgba(96, 165, 250, 0.16);
  color: #93c5fd;
}

body.dark-mode .quick-model-menu {
  border-color: rgba(96, 165, 250, 0.18);
  background:
    linear-gradient(135deg, rgba(15, 23, 42, 0.95), rgba(2, 6, 23, 0.92)),
    radial-gradient(circle at 14% 10%, rgba(96, 165, 250, 0.14), transparent 34%);
  box-shadow: 0 24px 70px rgba(2, 6, 23, 0.56);
}

body.dark-mode .quick-model-option {
  color: #f8fafc;
}

body.dark-mode .quick-model-option:hover,
body.dark-mode .quick-model-option:focus-visible,
body.dark-mode .quick-model-option.active {
  border-color: rgba(96, 165, 250, 0.24);
  background:
    linear-gradient(135deg, rgba(96, 165, 250, 0.15), rgba(16, 185, 129, 0.1)),
    rgba(15, 23, 42, 0.54);
}

body.dark-mode .quick-model-option em {
  background: rgba(148, 163, 184, 0.12);
  color: #cbd5e1;
}

body.dark-mode .quick-model-option em.pro {
  background: rgba(124, 58, 237, 0.2);
  border-color: rgba(167, 139, 250, 0.16);
  color: #c4b5fd;
}

.textarea-container {
  border-radius: 20px;
  background: rgba(255, 255, 255, 0.92);
  border-color: rgba(148, 163, 184, 0.22);
  box-shadow: 0 18px 42px rgba(15, 23, 42, 0.1);
}

.textarea-container::before {
  opacity: 0.35;
}

.textarea-container:focus-within {
  border-color: var(--model-accent-border);
  box-shadow: var(--input-glow-strong), 0 0 0 4px var(--model-accent-soft);
}

body.dark-mode .textarea-container {
  background: rgba(15, 23, 42, 0.88);
  border-color: rgba(148, 163, 184, 0.16);
}

.input-tools {
  border-radius: 16px;
  background: rgba(248, 250, 252, 0.9);
  border-color: rgba(148, 163, 184, 0.22);
}

body.dark-mode .input-tools {
  background: rgba(2, 6, 23, 0.52);
  border-color: rgba(148, 163, 184, 0.14);
}

.message-reference-preview {
  display: flex;
  align-items: center;
  gap: 10px;
  margin: 0 0 10px;
  padding: 10px 12px;
  border: 1px solid var(--model-accent-border);
  border-radius: 14px;
  background:
    var(--input-sheen),
    rgba(255, 255, 255, 0.82);
  box-shadow: 0 12px 26px rgba(15, 23, 42, 0.08);
}

.message-reference-icon {
  width: 34px;
  height: 34px;
  flex: 0 0 34px;
  display: inline-flex;
  align-items: center;
  justify-content: center;
  border-radius: 12px;
  background: var(--gradient);
  color: #ffffff;
}

.message-reference-meta {
  min-width: 0;
  display: flex;
  flex: 1 1 auto;
  flex-direction: column;
  gap: 2px;
}

.message-reference-meta span {
  color: #2563eb;
  font-size: 10px;
  font-weight: 900;
  letter-spacing: 0.08em;
  text-transform: uppercase;
}

.message-reference-meta strong {
  overflow: hidden;
  color: #0f172a;
  font-size: 12px;
  font-weight: 750;
  line-height: 1.35;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.message-reference-remove {
  width: 28px;
  height: 28px;
  flex: 0 0 28px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 999px;
  background: rgba(255, 255, 255, 0.82);
  color: #475569;
  cursor: pointer;
  font-size: 18px;
  line-height: 1;
}

.message-reference-remove:hover,
.message-reference-remove:focus-visible {
  border-color: var(--model-accent-border);
  color: var(--primary);
  outline: none;
}

.message-reference-inline {
  margin-bottom: 10px;
  padding: 9px 11px;
  border-left: 3px solid var(--primary);
  border-radius: 12px;
  background: var(--model-accent-soft);
}

.message-reference-inline span {
  display: inline-flex;
  align-items: center;
  gap: 7px;
  color: #2563eb;
  font-size: 11px;
  font-weight: 900;
  letter-spacing: 0.05em;
  text-transform: uppercase;
}

.message-reference-inline p {
  margin: 4px 0 0;
  color: #334155;
  font-size: 12px;
  line-height: 1.45;
}

body.dark-mode .message-reference-preview {
  border-color: rgba(96, 165, 250, 0.2);
  background:
    linear-gradient(135deg, rgba(96, 165, 250, 0.12), rgba(16, 185, 129, 0.08)),
    rgba(15, 23, 42, 0.82);
  box-shadow: 0 14px 30px rgba(2, 6, 23, 0.3);
}

body.dark-mode .message-reference-meta span,
body.dark-mode .message-reference-inline span {
  color: #93c5fd;
}

body.dark-mode .message-reference-meta strong,
body.dark-mode .message-reference-inline p {
  color: #e2e8f0;
}

body.dark-mode .message-reference-remove {
  border-color: rgba(148, 163, 184, 0.18);
  background: rgba(2, 6, 23, 0.62);
  color: #cbd5e1;
}

body.dark-mode .message-reference-inline {
  border-left-color: #60a5fa;
  background: rgba(96, 165, 250, 0.1);
}

.tool-btn {
  border-radius: 11px;
}

.submit-btn {
  border-radius: 13px;
  background: var(--gradient);
  box-shadow: 0 14px 28px var(--model-accent-soft);
}

.submit-btn:hover {
  box-shadow: var(--input-glow-strong);
}

.welcome-container {
  max-width: 860px;
}

.welcome-title {
  letter-spacing: 0;
  background: var(--gradient);
  -webkit-background-clip: text;
  background-clip: text;
  -webkit-text-fill-color: transparent;
}

body:not(.dark-mode) .sidebar {
  border-right-color: rgba(15, 23, 42, 0.08);
}

body:not(.dark-mode) .sidebar-nav-item:hover,
body:not(.dark-mode) .sidebar-nav-item.active {
  border-color: rgba(15, 23, 42, 0.08);
  background: rgba(255, 255, 255, 0.86);
  color: #0f172a;
}

body:not(.dark-mode) .sidebar-nav-item:hover span,
body:not(.dark-mode) .sidebar-nav-item.active span,
body:not(.dark-mode) .sidebar-nav-item:hover i,
body:not(.dark-mode) .sidebar-nav-item.active i {
  color: #0f172a;
}

.workspace-back-chat-btn {
  display: none;
  align-items: center;
  justify-content: center;
  gap: 8px;
  flex: 0 0 auto;
  min-height: 42px;
  padding: 10px 14px;
  border: 1px solid rgba(96, 165, 250, 0.28);
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.16);
  color: #dbeafe;
  cursor: pointer;
  font-size: 14px;
  font-weight: 800;
  letter-spacing: 0;
  transition: background 180ms ease, border-color 180ms ease, transform 180ms ease;
}

.workspace-back-chat-btn:hover,
.workspace-back-chat-btn:focus-visible {
  border-color: rgba(96, 165, 250, 0.48);
  background: rgba(37, 99, 235, 0.26);
  color: #ffffff;
  transform: translateY(-1px);
}

.workspace-back-chat-btn i {
  font-size: 13px;
}

body:not(.dark-mode) .workspace-back-chat-btn {
  border-color: rgba(37, 99, 235, 0.28);
  background: #ffffff;
  color: #1d4ed8;
  box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
}

body:not(.dark-mode) .workspace-back-chat-btn:hover,
body:not(.dark-mode) .workspace-back-chat-btn:focus-visible {
  border-color: rgba(37, 99, 235, 0.44);
  background: rgba(37, 99, 235, 0.08);
  color: #0f172a;
}

@media (max-width: 768px) {
  .sidebar-collapse-btn {
    display: none;
  }

  body.sidebar-collapsed .sidebar {
    display: flex;
  }

  .input-toolbar {
    flex-wrap: wrap;
  }

  .quick-model-switcher {
    width: 100%;
  }

  .quick-model-label {
    flex: 1 1 auto;
  }

  .quick-model-copy strong {
    max-width: none;
  }

  .quick-model-trigger {
    flex: 1 1 190px;
    min-width: min(100%, 190px);
  }

  .quick-model-trigger span {
    max-width: none;
  }

  .workspace-back-chat-btn {
    display: inline-flex;
    width: 100%;
    justify-content: flex-start;
    border-radius: 14px;
    background: rgba(96, 165, 250, 0.2);
  }

  body:not(.dark-mode) .workspace-back-chat-btn {
    background: #ffffff;
    color: #1d4ed8;
  }
}

.code-workspace-panel {
  position: fixed;
  top: 12px;
  right: 12px;
  height: calc(100vh - 24px);
  width: min(760px, calc(100vw - var(--sidebar-width, 300px) - 36px));
  min-width: 420px;
  min-height: 360px;
  display: flex;
  flex-direction: column;
  background: rgba(15, 23, 42, 0.96);
  border: 1px solid rgba(148, 163, 184, 0.26);
  border-radius: 22px;
  box-shadow: 0 28px 90px rgba(2, 6, 23, 0.46);
  color: #e5eefb;
  overflow: hidden;
  transform: translateX(calc(100% + 28px));
  opacity: 0;
  pointer-events: none;
  transition: transform 260ms var(--transition-easing, ease), opacity 220ms ease;
  z-index: 1800;
}

.code-workspace-panel.is-resizing {
  transition: none;
  user-select: none;
}

.code-workspace-panel.open {
  transform: translateX(0);
  opacity: 1;
  pointer-events: auto;
}

.code-workspace-resize {
  position: absolute;
  z-index: 3;
}

.code-workspace-resize-left {
  top: 14px;
  bottom: 14px;
  left: -5px;
  width: 10px;
  cursor: ew-resize;
}

.code-workspace-resize-bottom {
  left: 18px;
  right: 18px;
  bottom: -5px;
  height: 10px;
  cursor: ns-resize;
}

.code-workspace-resize-corner {
  left: -5px;
  bottom: -5px;
  width: 22px;
  height: 22px;
  cursor: nesw-resize;
}

.code-workspace-resize-left::after,
.code-workspace-resize-bottom::after,
.code-workspace-resize-corner::after {
  content: "";
  position: absolute;
  border-radius: 999px;
  background: rgba(96, 165, 250, 0);
  transition: background 160ms ease;
}

.code-workspace-resize-left::after {
  top: 22px;
  bottom: 22px;
  left: 4px;
  width: 2px;
}

.code-workspace-resize-bottom::after {
  left: 22px;
  right: 22px;
  bottom: 4px;
  height: 2px;
}

.code-workspace-resize-corner::after {
  left: 6px;
  bottom: 6px;
  width: 9px;
  height: 9px;
  border-left: 2px solid rgba(147, 197, 253, 0.6);
  border-bottom: 2px solid rgba(147, 197, 253, 0.6);
  background: transparent;
  border-radius: 0;
}

.code-workspace-resize:hover::after,
.code-workspace-panel.is-resizing .code-workspace-resize::after {
  background: rgba(96, 165, 250, 0.7);
}

.code-workspace-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 16px;
  padding: 18px 18px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.18);
  background:
    linear-gradient(135deg, rgba(37, 99, 235, 0.14), rgba(16, 185, 129, 0.08)),
    rgba(15, 23, 42, 0.96);
}

.code-workspace-kicker {
  color: rgba(186, 230, 253, 0.72);
  font-size: 11px;
  font-weight: 800;
  letter-spacing: 0.14em;
  text-transform: uppercase;
}

.code-workspace-title {
  margin: 2px 0 0;
  color: #f8fafc;
  font-size: 18px;
  font-weight: 800;
  letter-spacing: 0;
}

.code-workspace-close {
  width: 38px;
  height: 38px;
  border: 1px solid rgba(226, 232, 240, 0.16);
  border-radius: 12px;
  background: rgba(255, 255, 255, 0.06);
  color: #e2e8f0;
  cursor: pointer;
}

.code-workspace-close:hover,
.code-workspace-close:focus-visible {
  background: rgba(255, 255, 255, 0.12);
}

.code-workspace-tabs {
  display: inline-flex;
  gap: 6px;
  padding: 12px 14px;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(2, 6, 23, 0.42);
}

.code-workspace-tab {
  border: 1px solid transparent;
  border-radius: 999px;
  background: transparent;
  color: rgba(226, 232, 240, 0.72);
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 14px;
}

.code-workspace-tab.active {
  border-color: rgba(96, 165, 250, 0.34);
  background: rgba(37, 99, 235, 0.18);
  color: #ffffff;
}

.code-workspace-files {
  display: none;
  align-items: center;
  gap: 8px;
  padding: 10px 14px;
  overflow-x: auto;
  border-bottom: 1px solid rgba(148, 163, 184, 0.14);
  background: rgba(15, 23, 42, 0.74);
  scrollbar-width: thin;
}

.code-workspace-files.visible {
  display: flex;
}

.code-workspace-file {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
  max-width: 190px;
  flex: 0 0 auto;
  border: 1px solid rgba(148, 163, 184, 0.18);
  border-radius: 10px;
  background: rgba(255, 255, 255, 0.05);
  color: rgba(226, 232, 240, 0.74);
  cursor: pointer;
  font-size: 12px;
  font-weight: 750;
  padding: 8px 10px;
}

.code-workspace-file i {
  color: rgba(125, 211, 252, 0.78);
  flex: 0 0 auto;
}

.code-workspace-file span {
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-workspace-file:hover,
.code-workspace-file:focus-visible {
  border-color: rgba(125, 211, 252, 0.34);
  background: rgba(14, 165, 233, 0.12);
  color: #f8fafc;
}

.code-workspace-file.active {
  border-color: rgba(16, 185, 129, 0.46);
  background: rgba(16, 185, 129, 0.16);
  color: #ffffff;
}

.code-workspace-body {
  flex: 1;
  min-height: 0;
  display: grid;
  background: #0b1220;
}

.code-workspace-pane {
  display: none;
  min-height: 0;
  overflow: auto;
}

.code-workspace-pane.active {
  display: block;
}

.code-workspace-pane-preview {
  background:
    linear-gradient(45deg, rgba(148, 163, 184, 0.08) 25%, transparent 25%),
    linear-gradient(-45deg, rgba(148, 163, 184, 0.08) 25%, transparent 25%),
    linear-gradient(45deg, transparent 75%, rgba(148, 163, 184, 0.08) 75%),
    linear-gradient(-45deg, transparent 75%, rgba(148, 163, 184, 0.08) 75%),
    #111827;
  background-position: 0 0, 0 12px, 12px -12px, -12px 0;
  background-size: 24px 24px;
  padding: 14px;
}

.code-workspace-frame {
  width: 100%;
  height: 100%;
  min-height: 460px;
  border: 1px solid rgba(148, 163, 184, 0.28);
  border-radius: 16px;
  background: #ffffff;
  box-shadow: 0 18px 52px rgba(2, 6, 23, 0.3);
}

.code-workspace-python-preview {
  min-height: 100%;
  display: flex;
  flex-direction: column;
  gap: 12px;
}

.code-workspace-python-header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border: 1px solid rgba(148, 163, 184, 0.22);
  border-radius: 14px;
  background: rgba(15, 23, 42, 0.92);
  color: #f8fafc;
  font-weight: 800;
}

.code-workspace-python-header small {
  color: rgba(186, 230, 253, 0.68);
  font-size: 12px;
  font-weight: 700;
}

.code-workspace-terminal {
  flex: 1;
  min-height: 360px;
  overflow: auto;
  border: 1px solid rgba(34, 197, 94, 0.24);
  border-radius: 16px;
  background: #020617;
  box-shadow: 0 18px 52px rgba(2, 6, 23, 0.34);
  color: #d1fae5;
  font-family: var(--code-font, "SF Mono", "Roboto Mono", monospace);
  font-size: 13px;
  line-height: 1.65;
}

.code-workspace-terminal-line {
  padding: 14px 16px 0;
  color: #86efac;
  white-space: pre-wrap;
}

.code-workspace-terminal-output {
  margin: 0;
  padding: 8px 16px 16px;
  color: #e2e8f0;
  white-space: pre-wrap;
}

.code-workspace-editor {
  height: 100%;
  min-height: 100%;
  width: 100%;
  margin: 0;
  padding: 18px;
  overflow: auto;
  background: #07101f;
  display: block;
  border: 0;
  border-radius: 0;
  color: #dbeafe;
  font-family: var(--code-font, "SF Mono", "Roboto Mono", monospace);
  font-size: 13px;
  line-height: 1.65;
  white-space: pre;
  resize: none;
  outline: none;
  tab-size: 2;
}

.code-workspace-editor:focus {
  box-shadow: inset 0 0 0 2px rgba(96, 165, 250, 0.34);
}

.code-workspace-empty {
  min-height: 280px;
  display: grid;
  place-items: center;
  padding: 28px;
  color: rgba(226, 232, 240, 0.68);
  text-align: center;
}

.code-workspace-footer {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
  padding: 12px 14px;
  border-top: 1px solid rgba(148, 163, 184, 0.16);
  background: rgba(2, 6, 23, 0.62);
}

.code-workspace-meta {
  min-width: 0;
  color: rgba(226, 232, 240, 0.62);
  font-size: 12px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.code-workspace-actions {
  display: inline-flex;
  align-items: center;
  justify-content: flex-end;
  gap: 8px;
  flex: 0 0 auto;
}

.code-workspace-copy {
  display: inline-flex;
  align-items: center;
  gap: 8px;
  flex: 0 0 auto;
  border: 1px solid rgba(96, 165, 250, 0.34);
  border-radius: 999px;
  background: rgba(37, 99, 235, 0.16);
  color: #f8fafc;
  cursor: pointer;
  font-size: 13px;
  font-weight: 700;
  padding: 8px 12px;
}

.code-workspace-copy:hover,
.code-workspace-copy:focus-visible {
  background: rgba(37, 99, 235, 0.26);
}

.ai-preview-code.active,
.preview-btn.active {
  border-color: rgba(16, 185, 129, 0.58);
  background: rgba(16, 185, 129, 0.2);
}

@media (max-width: 900px) {
  .code-workspace-panel {
    inset: 10px;
    width: auto;
    height: auto;
    min-width: 0;
    min-height: 0;
    border-radius: 18px;
  }

  .code-workspace-resize {
    display: none;
  }

  .code-workspace-frame {
    min-height: 420px;
  }
}

@media (max-width: 560px) {
  .code-workspace-header,
  .code-workspace-footer {
    align-items: flex-start;
    flex-direction: column;
  }

  .code-workspace-actions {
    width: 100%;
    flex-wrap: wrap;
    justify-content: flex-start;
  }

  .code-workspace-close {
    position: absolute;
    top: 14px;
    right: 14px;
  }

  .code-workspace-tabs {
    width: 100%;
  }

  .code-workspace-tab {
    flex: 1;
  }

  .code-workspace-files.visible {
    padding-inline: 10px;
  }

  .code-workspace-file {
    max-width: 160px;
  }

  .code-workspace-python-header {
    align-items: flex-start;
    flex-direction: column;
  }
}

.mobile-composer-toggle {
  display: none;
}

@media (max-width: 768px) {
  .input-toolbar {
    display: grid;
    grid-template-columns: 1fr;
    gap: 8px;
    margin-bottom: 8px;
  }

  .mobile-composer-toggle {
    width: 100%;
    min-height: 38px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    gap: 8px;
    border: 1px solid var(--model-accent-border);
    border-radius: 14px;
    background:
      linear-gradient(135deg, rgba(255, 255, 255, 0.9), rgba(248, 250, 252, 0.76)),
      var(--input-sheen);
    color: #0f172a;
    font: inherit;
    font-size: 12px;
    font-weight: 850;
    letter-spacing: 0;
    box-shadow: 0 10px 24px rgba(15, 23, 42, 0.08);
  }

  .mobile-composer-toggle i {
    width: 18px;
    height: 18px;
    display: inline-flex;
    align-items: center;
    justify-content: center;
    color: var(--primary);
    font-size: 12px;
  }

  .mobile-composer-toggle i:last-child {
    transition: transform 160ms ease;
  }

  .input-toolbar.mobile-controls-open .mobile-composer-toggle i:last-child {
    transform: rotate(180deg);
  }

  .input-toolbar > #deepthink-control,
  .input-toolbar > #websearch-control,
  .input-toolbar > #quick-model-switcher {
    display: none;
  }

  .input-toolbar.mobile-controls-open > #deepthink-control,
  .input-toolbar.mobile-controls-open > #websearch-control,
  .input-toolbar.mobile-controls-open > #quick-model-switcher {
    display: flex;
  }

  .input-toolbar.mobile-controls-open {
    grid-template-columns: minmax(0, 1fr) minmax(0, 1fr);
  }

  .input-toolbar.mobile-controls-open .mobile-composer-toggle,
  .input-toolbar.mobile-controls-open > #quick-model-switcher {
    grid-column: 1 / -1;
  }

  #deepthink-control,
  #websearch-control {
    min-width: 0;
  }

  #deepthink-control .pill-button,
  #websearch-control .pill-button {
    width: 100%;
    min-height: 42px;
    padding: 6px 9px;
    border-radius: 14px;
  }

  #deepthink-control .pill-text,
  #websearch-control .pill-text {
    min-width: 0;
    gap: 1px;
  }

  #deepthink-control .pill-label,
  #websearch-control .pill-label {
    font-size: 10px;
  }

  #deepthink-control .pill-value,
  #websearch-control .pill-value {
    max-width: 78px;
    overflow: hidden;
    font-size: 12px;
    text-overflow: ellipsis;
    white-space: nowrap;
  }

  #deepthink-control .pill-subtext,
  #websearch-control .pill-subtext,
  #deepthink-control .pill-chip,
  #websearch-control .pill-chip,
  #deepthink-control .deepthink-refined-badge {
    display: none;
  }

  #deepthink-control .pill-icon,
  #websearch-control .pill-icon {
    width: 30px;
    height: 30px;
    flex-basis: 30px;
    border-radius: 11px;
  }

  .quick-model-switcher {
    width: 100%;
    min-height: 46px;
    margin-left: 0;
    padding: 5px;
    border-radius: 16px;
  }

  .quick-model-switcher::after {
    min-height: 32px;
  }

  .quick-model-icon {
    width: 32px;
    height: 32px;
    flex-basis: 32px;
    border-radius: 12px;
  }

  .quick-model-copy strong {
    max-width: min(38vw, 132px);
  }

  .quick-model-trigger {
    min-width: 112px;
    height: 34px;
    border-radius: 12px;
    font-size: 12px;
  }

  .quick-model-trigger span {
    max-width: min(34vw, 116px);
  }

  .quick-model-menu {
    right: 0;
    left: auto;
    width: min(320px, calc(100vw - 24px));
    max-height: min(330px, 58vh);
    bottom: calc(100% + 8px);
  }

  .deepthink-popover {
    left: 0;
    right: auto;
    width: min(328px, calc(100vw - 24px));
    max-height: min(460px, 62vh);
    overflow-y: auto;
  }

  body.dark-mode .mobile-composer-toggle {
    border-color: rgba(96, 165, 250, 0.18);
    background:
      linear-gradient(135deg, rgba(15, 23, 42, 0.9), rgba(2, 6, 23, 0.78)),
      var(--input-sheen);
    color: #f8fafc;
    box-shadow: 0 12px 26px rgba(2, 6, 23, 0.28);
  }
}