/* ============================================
   HUFS Agent - Main Stylesheet
   ============================================ */

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

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

body {
  font-family: var(--font-sans);
  font-size: var(--text-base);
  color: var(--dot-text);
  background: var(--dot-bg);
  line-height: 1.6;
  height: 100vh;
  overflow: hidden;
}

/* --- Login Screen --- */
.login-screen {
  display: flex;
  align-items: center;
  justify-content: center;
  height: 100vh;
  width: 100vw;
}

.login-card {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: var(--sp-5);
  padding: var(--sp-10) var(--sp-12);
  background: var(--dot-surface);
  border: 1px solid var(--dot-border-light);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  text-align: center;
  min-width: 340px;
}

.login-card__mark {
  font-size: 48px;
  font-weight: 800;
  color: var(--dot-primary);
  line-height: 1;
  letter-spacing: -2px;
  font-family: var(--font-sans);
}

.login-card__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--dot-text);
}

.login-card__desc {
  font-size: var(--text-base);
  color: var(--dot-text-secondary);
}

.login-card__error {
  font-size: var(--text-sm);
  color: var(--dot-error);
  padding: var(--sp-2) var(--sp-4);
  background: rgba(239, 68, 68, 0.08);
  border-radius: var(--radius-md);
  max-width: 300px;
}

.login-card__notice {
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
}

/* --- Layout --- */
.app {
  display: flex;
  height: 100vh;
}

/* --- Sidebar --- */
.sidebar {
  width: 220px;
  background: var(--dot-surface);
  border-right: 1px solid var(--dot-border-light);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: transform var(--transition-base);
}

.sidebar__header {
  padding: var(--sp-6);
  border-bottom: 1px solid var(--dot-border-light);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.sidebar__close-btn {
  display: none;
}

.sidebar__logo {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
}


.sidebar__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--dot-text);
}

.sidebar__logo-mark {
  flex-shrink: 0;
  line-height: 0;
}

.sidebar__subtitle {
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
  margin-top: 2px;
}

/* New Chat Button */
.sidebar__new-chat {
  margin: var(--sp-4) var(--sp-4) 0;
}

.sidebar__new-chat .dot-btn {
  width: 100%;
  padding: var(--sp-3) var(--sp-4);
}

/* Conversation History */
.sidebar__history {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-4);
}

.sidebar__history-label {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--dot-text-muted);
  text-transform: uppercase;
  letter-spacing: 0.5px;
  padding: var(--sp-2) var(--sp-2);
  margin-bottom: var(--sp-1);
}

.history-item {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-3);
  border-radius: var(--radius-md);
  cursor: pointer;
  transition: background var(--transition-fast);
  font-size: var(--text-sm);
  color: var(--dot-text-secondary);
}

.history-item:hover {
  background: var(--dot-surface-hover);
  color: var(--dot-text);
}

.history-item--active {
  background: var(--dot-primary-ghost);
  color: var(--dot-primary);
}

.history-item__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--dot-border);
  flex-shrink: 0;
}

.history-item--active .history-item__dot {
  background: var(--dot-primary);
}

.history-item__text {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
}

/* History Item - Delete Button */
.history-item {
  position: relative;
}

.history-item__delete {
  display: none;
  align-items: center;
  justify-content: center;
  width: 20px;
  height: 20px;
  border: none;
  border-radius: var(--radius-sm);
  background: transparent;
  color: var(--dot-text-muted);
  cursor: pointer;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.history-item:hover .history-item__delete {
  display: flex;
}

.history-item__delete:hover {
  background: rgba(239, 68, 68, 0.1);
  color: var(--dot-error);
}

/* Inline delete confirmation */
.history-item--confirming {
  position: relative;
}

.history-item__confirm {
  position: absolute;
  inset: 0;
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  padding: 0 var(--sp-2);
  background: var(--dot-surface);
  border-radius: var(--radius-md);
  border: 1px solid var(--dot-error);
  z-index: 5;
  animation: fadeIn 0.15s ease-out;
}

@keyframes fadeIn {
  from { opacity: 0; }
  to { opacity: 1; }
}

.history-item__confirm-text {
  flex: 1;
  font-size: 11px;
  color: var(--dot-text-secondary);
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
}

.history-item__confirm-yes,
.history-item__confirm-no {
  border: none;
  border-radius: var(--radius-sm);
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 600;
  cursor: pointer;
  padding: 2px 8px;
  white-space: nowrap;
  transition: all var(--transition-fast);
}

.history-item__confirm-yes {
  background: var(--dot-error);
  color: #fff;
}

.history-item__confirm-yes:hover {
  filter: brightness(0.9);
}

.history-item__confirm-no {
  background: var(--dot-surface-hover);
  color: var(--dot-text-secondary);
}

.history-item__confirm-no:hover {
  background: var(--dot-border-light);
}

/* Delete All Button */
.delete-all-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-1);
  width: 100%;
  padding: var(--sp-1) var(--sp-2);
  margin-bottom: var(--sp-2);
  border: 1px dashed var(--dot-border);
  border-radius: var(--radius-md);
  background: transparent;
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--dot-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.delete-all-btn:hover {
  border-color: var(--dot-error);
  color: var(--dot-error);
  background: rgba(239, 68, 68, 0.04);
}

/* Delete All Modal */
.delete-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.4);
  z-index: 500;
  display: flex;
  align-items: center;
  justify-content: center;
  animation: fadeIn 0.15s ease-out;
}

.delete-modal {
  background: var(--dot-surface);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  padding: var(--sp-6);
  width: 340px;
  max-width: 90vw;
  animation: modalSlideIn 0.2s ease-out;
}

@keyframes modalSlideIn {
  from { opacity: 0; transform: scale(0.95) translateY(8px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}

.delete-modal__title {
  font-size: var(--text-lg);
  font-weight: 700;
  color: var(--dot-error);
  margin-bottom: var(--sp-2);
}

.delete-modal__desc {
  font-size: var(--text-sm);
  color: var(--dot-text-secondary);
  margin-bottom: var(--sp-4);
  line-height: 1.5;
}

.delete-modal__prompt {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--dot-text);
  margin-bottom: var(--sp-2);
}

.delete-modal__input {
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  border: 1.5px solid var(--dot-border);
  border-radius: var(--radius-md);
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--dot-text);
  outline: none;
  transition: border-color var(--transition-fast);
}

.delete-modal__input:focus {
  border-color: var(--dot-error);
}

.delete-modal__actions {
  display: flex;
  justify-content: flex-end;
  gap: var(--sp-2);
  margin-top: var(--sp-4);
}

.delete-modal__confirm-btn {
  background: var(--dot-error) !important;
  color: #fff !important;
  border: none;
  font-weight: 600;
}

.delete-modal__confirm-btn:disabled {
  opacity: 0.4;
  cursor: not-allowed;
}

.delete-modal__confirm-btn:not(:disabled):hover {
  filter: brightness(0.9);
}

/* Sidebar Budget Status */
.sidebar__budget {
  padding: var(--sp-3) var(--sp-4);
  border-top: 1px solid var(--dot-border-light);
}

.budget-dual {
  display: flex;
  gap: var(--sp-3);
}

.budget-dual__col {
  flex: 1;
  min-width: 0;
}

.budget-dual__label {
  font-size: 10px;
  font-weight: 600;
  color: var(--dot-text-muted);
  margin-bottom: 2px;
}

.budget-dual__value {
  font-size: 13px;
  font-weight: 700;
  margin-bottom: 4px;
}

.budget-dual__sub {
  font-size: 9px;
  color: var(--dot-text-muted);
  margin-top: 2px;
}

.budget-status__bar {
  height: 4px;
  background: var(--dot-border-light);
  border-radius: var(--radius-full);
  overflow: hidden;
}

.budget-status__fill {
  height: 100%;
  border-radius: var(--radius-full);
  transition: width var(--transition-base);
}

.budget-reset-info {
  font-size: 9px;
  color: var(--dot-text-muted);
  margin-top: 6px;
  line-height: 1.3;
}

/* Sidebar Footer - Memory Info */
.sidebar__footer {
  padding: var(--sp-4);
  border-top: 1px solid var(--dot-border-light);
}

.memory-status {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
  padding: var(--sp-2);
}

.memory-status__count {
  font-weight: 600;
  color: var(--dot-primary);
}

/* --- Main Content --- */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
}

/* Top Bar */
.topbar {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-3) var(--sp-6);
  border-bottom: 1px solid var(--dot-border-light);
  background: var(--dot-surface);
  gap: var(--sp-4);
}

.topbar__left {
  display: flex;
  align-items: center;
  gap: var(--sp-3);
  flex: 1;
  min-width: 0;
}

.topbar__menu-btn {
  display: none;
}

/* Input Feature Toggles (inside input container, left of send) */
.input-actions {
  display: flex;
  flex-direction: column;
  align-items: flex-end;
  gap: 4px;
  flex-shrink: 0;
}

.input-toggles {
  display: flex;
  align-items: center;
  gap: 3px;
  flex-shrink: 0;
}

.input-toggle {
  display: flex;
  align-items: center;
  gap: 3px;
  padding: 2px 8px;
  height: 22px;
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--dot-text-muted);
  font-family: var(--font-sans);
  font-size: 11px;
  cursor: pointer;
  transition: all var(--transition-fast);
  flex-shrink: 0;
  white-space: nowrap;
}

.input-toggle:hover {
  border-color: var(--dot-text-secondary);
  color: var(--dot-text-secondary);
  background: var(--dot-surface-hover);
}

.input-toggle--active {
  border-color: var(--dot-primary);
  color: var(--dot-primary);
  background: var(--dot-primary-ghost);
}

.input-toggle--active:hover {
  border-color: var(--dot-primary);
  color: var(--dot-primary);
}

/* Tier indicator dot colors */
.dot-indicator--free {
  background: var(--dot-success, #22c55e) !important;
}

.dot-indicator--budget {
  background: var(--dot-primary) !important;
}

.dot-indicator--premium {
  background: var(--dot-accent, #FF6B4A) !important;
}

/* --- Rankings (inline in topbar) --- */
.rankings-bar {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  min-width: 0;
  position: relative;
}

.rank-badge-col {
  display: flex;
  flex-direction: column;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
}

.rank-badge {
  flex-shrink: 0;
  display: flex;
  flex-direction: column;
  align-items: center;
  font-size: 10px;
  font-weight: 700;
  color: var(--dot-success, #22c55e);
  background: rgba(234, 88, 12, 0.08);
  padding: 3px 8px;
  border-radius: var(--radius-md);
  border: 1px solid rgba(34, 197, 94, 0.18);
  white-space: nowrap;
  line-height: 1.2;
}

.rank-badge__sub {
  font-size: 8px;
  font-weight: 500;
  color: var(--dot-text-muted);
  letter-spacing: -0.3px;
}

.rank-lines {
  display: flex;
  gap: var(--sp-3);
  min-width: 0;
  overflow: hidden;
  flex: 1;
}

.rank-section {
  display: flex;
  flex-direction: column;
  gap: 2px;
  min-width: 0;
}

.rank-section__label {
  font-size: 9px;
  font-weight: 700;
  color: var(--dot-primary);
  background: var(--dot-primary-ghost);
  padding: 1px 6px;
  border-radius: var(--radius-sm);
  width: fit-content;
  letter-spacing: -0.3px;
}

.rank-col {
  display: flex;
  flex-direction: column;
  gap: 1px;
  line-height: 1.4;
}

.rank-item {
  display: inline-flex;
  align-items: center;
  gap: 3px;
  white-space: nowrap;
  font-size: 11px;
  color: var(--dot-text-secondary);
}

.rank-num {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  width: 14px;
  height: 14px;
  border-radius: var(--radius-full);
  background: var(--dot-border-light);
  font-size: 9px;
  font-weight: 700;
  color: var(--dot-text-muted);
  flex-shrink: 0;
}

.rank-item:first-child .rank-num {
  background: var(--dot-primary-ghost);
  color: var(--dot-primary);
}

.rank-score {
  font-size: 10px;
  font-weight: 600;
  color: var(--dot-success, #22c55e);
}

.rank-price {
  font-size: 9px;
  color: var(--dot-text-muted);
}

.rank-free {
  font-size: 9px;
  font-weight: 600;
  color: var(--dot-success, #22c55e);
}

.rank-more-btn {
  display: inline-flex;
  align-items: center;
  background: none;
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-full);
  padding: 1px 8px;
  font-size: 9px;
  font-weight: 600;
  color: var(--dot-text-muted);
  cursor: pointer;
  white-space: nowrap;
  flex-shrink: 0;
  transition: color 0.15s, border-color 0.15s;
}
.rank-more-btn:hover {
  color: var(--dot-primary);
  border-color: var(--dot-primary);
}

.rank-expanded {
  display: none;
  gap: var(--sp-3);
  position: absolute;
  top: 100%;
  left: 0;
  right: 0;
  z-index: 50;
  background: var(--dot-surface);
  border: 1px solid var(--dot-border-light);
  border-top: none;
  border-radius: 0 0 var(--radius-md) var(--radius-md);
  padding: var(--sp-2) var(--sp-3);
  box-shadow: 0 4px 12px rgba(0,0,0,0.08);
}
.rank-expanded--open {
  display: flex;
}

@media (max-width: 768px) {
  .rankings-bar { font-size: 10px; }
}

/* --- Model Slots Section --- */
.model-slots-bar {
  border-bottom: 1px solid var(--dot-border-light);
  background: var(--dot-surface);
  padding: var(--sp-1) var(--sp-6);
}

.slot-cost-estimate {
  font-size: 10px;
  color: var(--dot-text-muted);
  padding: 2px 0 0;
  line-height: 1.3;
}
.slot-cost__model {
  font-weight: 600;
  color: var(--dot-text-secondary);
}
.slot-cost__free {
  font-weight: 600;
  color: var(--dot-success);
}
.slot-cost__value {
  font-weight: 600;
  color: var(--dot-warning);
}

.slot-section__header {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-bottom: var(--sp-2);
}

.slot-section__title {
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--dot-text-muted);
  white-space: nowrap;
}

.slot-section__header .dot-btn {
  display: flex;
  align-items: center;
  gap: 4px;
  padding: 2px 8px;
  height: 24px;
  font-size: 11px;
}

/* Text 2x2 + Image 1x2 = 3-column look */
.slot-area {
  display: flex;
  gap: 4px;
  align-items: stretch;
}

.slot-grid {
  display: grid;
  gap: 4px;
}

.slot-grid--text {
  grid-template-columns: 1fr 1fr;
  flex: 2;
  padding: 4px;
  background: rgba(59, 130, 246, 0.03);
  border: 1px dashed rgba(59, 130, 246, 0.15);
  border-radius: var(--radius-md);
}

.slot-grid--image {
  grid-template-columns: 1fr;
  flex: 1;
  padding: 4px;
  background: rgba(168, 85, 247, 0.04);
  border: 1px dashed rgba(168, 85, 247, 0.2);
  border-radius: var(--radius-md);
}

.slot-grid--video {
  grid-template-columns: 1fr;
  flex: 1;
  padding: 4px;
  background: rgba(234, 88, 12, 0.04);
  border: 1px dashed rgba(234, 88, 12, 0.2);
  border-radius: var(--radius-md);
}

.slot-grid__label {
  grid-column: 1 / -1;
  font-size: 9px;
  font-weight: 700;
  text-align: center;
  padding-bottom: 1px;
  letter-spacing: 0.3px;
}

.slot-grid__label--text {
  color: var(--dot-primary);
}

.slot-grid__label--image {
  color: #a855f7;
}

.slot-btn--image {
  border-color: rgba(168, 85, 247, 0.2);
}

.slot-btn--image.slot-btn--active {
  background: rgba(168, 85, 247, 0.08);
  border-color: rgba(168, 85, 247, 0.5);
  color: #a855f7;
}

.slot-grid__label--video {
  color: #ea580c;
}

.slot-btn--video {
  border-color: rgba(234, 88, 12, 0.2);
}

.slot-btn--video.slot-btn--active {
  background: rgba(234, 88, 12, 0.08);
  border-color: rgba(234, 88, 12, 0.5);
  color: #ea580c;
}

.slot-btn {
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 4px;
  padding: 3px 8px;
  background: var(--dot-surface);
  border: 1.5px solid var(--dot-border);
  border-radius: var(--radius-md);
  cursor: pointer;
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--dot-text-secondary);
  transition: all var(--transition-fast);
  min-height: 28px;
}

.slot-btn:hover {
  border-color: var(--dot-primary);
  color: var(--dot-text);
  background: var(--dot-primary-ghost);
}

/* Active slot (no font-weight change to prevent layout shift) */
.slot-btn--active {
  border-color: var(--dot-primary);
  color: var(--dot-primary);
  background: var(--dot-primary-ghost);
}

.slot-btn--empty {
  border-style: dashed;
  color: var(--dot-text-muted);
}

.slot-btn--empty:hover {
  border-style: solid;
}

.slot-btn__caps {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.slot-cap {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  padding: 0 4px;
  height: 16px;
  border-radius: 3px;
  font-size: 9px;
  font-weight: 600;
  font-family: var(--font-sans);
  line-height: 1;
  white-space: nowrap;
}

.slot-cap--text {
  background: var(--dot-primary-ghost);
  color: var(--dot-primary);
}

.slot-cap--image {
  background: rgba(168, 85, 247, 0.12);
  color: #8b5cf6;
}

.slot-picker__caps {
  display: flex;
  gap: 2px;
  flex-shrink: 0;
}

.slot-btn__name {
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
  flex: 1;
  text-align: left;
}

.slot-btn__edit {
  display: flex;
  align-items: center;
  gap: 2px;
  flex-shrink: 0;
  padding: 1px 4px;
  border-radius: var(--radius-sm);
  color: var(--dot-text-muted);
  font-size: 9px;
  transition: all var(--transition-fast);
}

.slot-btn__edit-label {
  font-weight: 500;
}

.slot-btn:hover .slot-btn__edit {
  color: var(--dot-primary);
}

.slot-btn--active .slot-btn__edit {
  color: var(--dot-primary);
}

/* Preset number buttons [1][2][3][4] */
.slot-preset-btns {
  display: flex;
  gap: 2px;
}

.slot-preset-btn {
  width: 22px;
  height: 22px;
  display: flex;
  align-items: center;
  justify-content: center;
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-sm);
  background: var(--dot-surface);
  font-family: var(--font-sans);
  font-size: 10px;
  font-weight: 600;
  color: var(--dot-primary);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slot-preset-btn:hover {
  background: var(--dot-primary-ghost);
  border-color: var(--dot-primary);
}

.slot-preset-btn--empty {
  color: var(--dot-text-muted);
  border-style: dashed;
}

.slot-preset-btn--empty:hover {
  border-style: solid;
}

.slot-preset-btn--active {
  background: var(--dot-primary);
  color: #fff;
  border-color: var(--dot-primary);
}

/* Slot Picker Popup */
.slot-picker {
  position: fixed;
  width: 280px;
  max-height: 450px;
  background: var(--dot-surface);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-lg);
  z-index: 300;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.slot-picker__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-2) var(--sp-3);
  font-size: var(--text-xs);
  font-weight: 600;
  color: var(--dot-text-secondary);
  border-bottom: 1px solid var(--dot-border-light);
}

.slot-picker__clear {
  background: none;
  border: none;
  font-family: var(--font-sans);
  font-size: 11px;
  color: var(--dot-error);
  cursor: pointer;
  padding: 2px 6px;
  border-radius: var(--radius-sm);
}

.slot-picker__clear:hover {
  background: rgba(239, 68, 68, 0.08);
}

/* Tier tabs */
.slot-picker__tabs {
  display: grid;
  grid-template-columns: repeat(4, 1fr);
  border-bottom: 1px solid var(--dot-border-light);
}

.slot-picker__tab {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 3px;
  padding: var(--sp-2) 0;
  font-family: var(--font-sans);
  font-size: 11px;
  font-weight: 500;
  color: var(--dot-text-muted);
  background: none;
  border: none;
  border-bottom: 2px solid transparent;
  cursor: pointer;
  transition: all var(--transition-fast);
}

.slot-picker__tab:hover:not(:disabled) {
  color: var(--dot-text-secondary);
  background: var(--dot-surface-hover);
}

.slot-picker__tab--active {
  color: var(--dot-primary);
  border-bottom-color: var(--dot-primary);
}

.slot-picker__tab:disabled {
  opacity: 0.35;
  cursor: not-allowed;
}

.slot-picker__tab-count {
  font-size: 10px;
  color: var(--dot-text-muted);
  font-weight: 400;
}

.slot-picker__tab--active .slot-picker__tab-count {
  color: var(--dot-primary-light);
}

.slot-picker__empty {
  padding: var(--sp-6) var(--sp-3);
  text-align: center;
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
}

.slot-picker__search {
  padding: var(--sp-2) var(--sp-3);
  border-bottom: 1px solid var(--dot-border-light);
}

.slot-picker__search input {
  width: 100%;
  padding: var(--sp-1) var(--sp-2);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-full);
  font-family: var(--font-sans);
  font-size: var(--text-xs);
  outline: none;
}

.slot-picker__search input:focus {
  border-color: var(--dot-primary);
}

.slot-picker__list {
  flex: 1;
  overflow-y: auto;
  max-height: 350px;
}

.slot-picker__item {
  display: flex;
  flex-direction: column;
  gap: 1px;
  padding: var(--sp-2) var(--sp-3);
  cursor: pointer;
  font-size: var(--text-xs);
  color: var(--dot-text);
  transition: background var(--transition-fast);
  border-bottom: 1px solid var(--dot-border-light);
}

.slot-picker__item:last-child {
  border-bottom: none;
}

.slot-picker__item:hover {
  background: var(--dot-surface-hover);
}

.slot-picker__item--used {
  color: var(--dot-text-muted);
}

.slot-picker__item-top {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
}

.slot-picker__item-desc {
  display: flex;
  align-items: center;
  gap: 4px;
  font-size: 10px;
  color: var(--dot-text-muted);
  line-height: 1.3;
}

.slot-picker__ctx {
  flex-shrink: 0;
  padding: 0 4px;
  height: 14px;
  display: inline-flex;
  align-items: center;
  border-radius: 3px;
  background: var(--dot-border-light);
  font-size: 9px;
  font-weight: 600;
  color: var(--dot-text-muted);
}

.slot-picker__desc-text {
  flex: 1;
  min-width: 0;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.slot-picker__link {
  flex-shrink: 0;
  color: var(--dot-text-muted);
  opacity: 0.6;
  transition: opacity 0.15s, color 0.15s;
}

.slot-picker__link:hover {
  opacity: 1;
  color: var(--dot-primary);
}

.slot-picker__price {
  margin-left: auto;
  font-size: 10px;
  color: var(--dot-text-muted);
  white-space: nowrap;
  flex-shrink: 0;
}

.slot-picker__price--free {
  color: var(--dot-success, #22c55e);
  font-weight: 600;
}

/* Slot Toast */
.slot-toast {
  position: fixed;
  top: 60px;
  left: 50%;
  transform: translateX(-50%) translateY(-8px);
  background: var(--dot-primary);
  color: #fff;
  padding: 6px 16px;
  border-radius: var(--radius-full);
  font-size: var(--text-xs);
  font-family: var(--font-sans);
  box-shadow: var(--shadow-md);
  z-index: 999;
  opacity: 0;
  transition: opacity 0.2s ease, transform 0.2s ease;
  pointer-events: none;
}

/* Right side of topbar */
.topbar__right {
  display: flex;
  align-items: center;
  gap: var(--sp-1);
  flex-shrink: 0;
}

/* User Menu */
.user-menu {
  position: relative;
}

.user-menu__trigger {
  display: flex;
  align-items: center;
  background: none;
  border: none;
  cursor: pointer;
  padding: 2px;
  border-radius: var(--radius-full);
  transition: box-shadow var(--transition-fast);
}

.user-menu__trigger:hover {
  box-shadow: 0 0 0 2px var(--dot-primary-ghost);
}

.user-menu__avatar-wrap {
  width: 28px;
  height: 28px;
  border-radius: var(--radius-full);
  overflow: hidden;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--dot-primary);
  color: #fff;
  font-size: 12px;
  font-weight: 700;
  font-family: var(--font-sans);
}

.user-menu__avatar-wrap img {
  width: 100%;
  height: 100%;
  object-fit: cover;
}

.user-menu__avatar-fallback {
  line-height: 1;
}

.user-menu__dropdown {
  position: absolute;
  top: calc(100% + var(--sp-1));
  right: 0;
  background: var(--dot-surface);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  z-index: 120;
  display: none;
  min-width: 200px;
  overflow: hidden;
}

.user-menu__dropdown--open {
  display: block;
}

.user-menu__info {
  padding: var(--sp-3) var(--sp-4);
}

.user-menu__name {
  font-size: var(--text-sm);
  font-weight: 600;
  color: var(--dot-text);
}

.user-menu__email {
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
  margin-top: 2px;
}

.user-menu__divider {
  height: 1px;
  background: var(--dot-border-light);
}

.user-menu__item {
  display: block;
  width: 100%;
  padding: var(--sp-2) var(--sp-4);
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--dot-text-secondary);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
}

.user-menu__item:hover {
  background: var(--dot-surface-hover);
  color: var(--dot-error);
}

/* Locale Switcher */
.locale-switcher {
  position: relative;
}

.locale-switcher__label {
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 0.5px;
}

.locale-switcher__dropdown {
  position: absolute;
  top: calc(100% + var(--sp-1));
  right: 0;
  background: var(--dot-surface);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-md);
  box-shadow: var(--shadow-lg);
  overflow: hidden;
  z-index: 120;
  display: none;
  min-width: 100px;
}

.locale-switcher__dropdown--open {
  display: block;
}

.locale-option {
  display: block;
  width: 100%;
  padding: var(--sp-2) var(--sp-3);
  border: none;
  background: transparent;
  font-family: var(--font-sans);
  font-size: var(--text-sm);
  color: var(--dot-text);
  cursor: pointer;
  text-align: left;
  transition: background var(--transition-fast);
}

.locale-option:hover {
  background: var(--dot-surface-hover);
}

.locale-option--active {
  color: var(--dot-primary);
  font-weight: 600;
}

/* --- Chat Area --- */
.chat {
  flex: 1;
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.chat__messages {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-6) var(--sp-8);
  scroll-behavior: smooth;
}

/* Welcome screen */
.chat__welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 100%;
  text-align: center;
  gap: var(--sp-6);
}

/* Welcome icon - 3 horizontal bars (conversation lines) */
.welcome__icon {
  font-size: 72px;
  font-weight: 800;
  color: var(--dot-primary);
  line-height: 1;
  letter-spacing: -3px;
  font-family: var(--font-sans);
  opacity: 0.15;
  animation: welcomeFadeIn 0.6s ease-out both;
}

@keyframes welcomeFadeIn {
  from { opacity: 0; transform: scale(0.9); }
  to   { opacity: 0.15; transform: scale(1); }
}

.welcome__title {
  font-size: var(--text-2xl);
  font-weight: 700;
  color: var(--dot-text);
}

.welcome__desc {
  font-size: var(--text-base);
  color: var(--dot-text-secondary);
  max-width: 400px;
  line-height: 1.7;
}

/* Message Bubbles */
.message {
  display: flex;
  gap: var(--sp-3);
  max-width: 780px;
  margin: 0 auto var(--sp-5);
  animation: messageSlideIn var(--transition-base) ease-out;
}

@keyframes messageSlideIn {
  from { opacity: 0; transform: translateY(8px); }
  to   { opacity: 1; transform: translateY(0); }
}

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

.message__avatar {
  width: 32px;
  height: 32px;
  border-radius: var(--radius-full);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  font-size: var(--text-xs);
  font-weight: 600;
}

.message--user .message__avatar {
  background: var(--dot-primary);
  color: #fff;
}

.message--assistant .message__avatar {
  background: var(--dot-surface-hover);
  border: 1px solid var(--dot-border);
  color: var(--dot-text-secondary);
}

.message__content {
  flex: 1;
  min-width: 0;
}

.message__bubble {
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-lg);
  font-size: var(--text-base);
  line-height: 1.7;
  word-wrap: break-word;
}

.message--user .message__bubble {
  background: var(--dot-primary);
  color: #fff;
  border-bottom-right-radius: var(--sp-1);
}

.message--assistant .message__bubble {
  background: var(--dot-surface);
  border: 1px solid var(--dot-border-light);
  color: var(--dot-text);
  border-bottom-left-radius: var(--sp-1);
}

.message__bubble p {
  margin-bottom: var(--sp-2);
}

.message__bubble p:last-child {
  margin-bottom: 0;
}

.message__bubble pre {
  background: #1a1d23;
  color: #e5e7eb;
  padding: var(--sp-3) var(--sp-4);
  border-radius: var(--radius-md);
  overflow-x: auto;
  font-family: var(--font-mono);
  font-size: var(--text-sm);
  margin: var(--sp-2) 0;
  line-height: 1.5;
}

.message__bubble code {
  font-family: var(--font-mono);
  font-size: 0.9em;
  background: rgba(0,0,0,0.06);
  padding: 1px 5px;
  border-radius: 4px;
}

.message__bubble pre code {
  background: none;
  padding: 0;
}

.message__meta {
  display: flex;
  align-items: center;
  gap: var(--sp-2);
  margin-top: var(--sp-1);
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
}

.message--user .message__meta {
  justify-content: flex-end;
}

.message__tts {
  display: flex;
  align-items: center;
  justify-content: center;
  width: 24px;
  height: 24px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--dot-text-muted);
  cursor: pointer;
  transition: all var(--transition-fast);
}

.message__tts:hover {
  color: var(--dot-primary);
  background: var(--dot-primary-ghost);
}

/* Streaming indicator */
.message__streaming {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin-left: var(--sp-1);
}

.message__streaming-dot {
  width: 4px;
  height: 4px;
  border-radius: var(--radius-full);
  background: var(--dot-primary);
  animation: dotBounce 1.2s ease-in-out infinite;
}

.message__streaming-dot:nth-child(2) { animation-delay: 0.15s; }
.message__streaming-dot:nth-child(3) { animation-delay: 0.3s; }

/* Generated Images */
.message__images {
  display: flex;
  flex-wrap: wrap;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.message__image-link {
  display: block;
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--dot-border-light);
  transition: box-shadow var(--transition-fast);
  max-width: 100%;
}

.message__image-link:hover {
  box-shadow: var(--shadow-md);
}

.message__image {
  display: block;
  max-width: 100%;
  max-height: 400px;
  object-fit: contain;
  border-radius: var(--radius-md);
  background: var(--dot-surface-hover);
}

/* Video in messages */
.message__videos {
  display: flex;
  flex-direction: column;
  gap: var(--sp-2);
  margin-top: var(--sp-2);
}

.message__video-wrap {
  border-radius: var(--radius-md);
  overflow: hidden;
  border: 1px solid var(--dot-border-light);
}

.message__video {
  display: block;
  max-width: 100%;
  max-height: 400px;
  background: #000;
  border-radius: var(--radius-md);
}

.message__video-download {
  display: inline-flex;
  align-items: center;
  gap: 4px;
  margin: 6px 8px;
  padding: 3px 10px;
  font-size: 11px;
  color: var(--dot-text-secondary);
  text-decoration: none;
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-full);
  transition: all var(--transition-fast);
}

.message__video-download:hover {
  border-color: var(--dot-primary);
  color: var(--dot-primary);
}

.message__video-progress {
  display: flex;
  align-items: center;
  padding: 8px 0;
}

.message__video-spinner {
  width: 20px;
  height: 20px;
  border: 2px solid var(--dot-border);
  border-top-color: #ea580c;
  border-radius: 50%;
  animation: videoSpin 1s linear infinite;
}

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

/* Video toggle active color */
.input-toggle--video.input-toggle--active {
  border-color: rgba(234, 88, 12, 0.5);
  color: #ea580c;
  background: rgba(234, 88, 12, 0.08);
}

/* Memory notification */
.memory-notice {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: var(--sp-2);
  padding: var(--sp-2) var(--sp-4);
  margin: var(--sp-2) auto;
  max-width: 780px;
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
  background: var(--dot-primary-ghost);
  border-radius: var(--radius-full);
  animation: messageSlideIn var(--transition-base) ease-out;
}

.memory-notice__dot {
  width: 6px;
  height: 6px;
  border-radius: var(--radius-full);
  background: var(--dot-primary);
}

/* --- Input Area --- */
.chat__input-area {
  padding: var(--sp-4) var(--sp-6) var(--sp-6);
  background: var(--dot-bg);
}

.input-container {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: var(--sp-3);
  padding: var(--sp-3) var(--sp-3) var(--sp-3) var(--sp-4);
  background: var(--dot-surface);
  border: 1px solid var(--dot-border);
  border-radius: var(--radius-lg);
  box-shadow: var(--shadow-sm);
  transition: border-color var(--transition-fast), box-shadow var(--transition-fast);
}

.input-container:focus-within {
  border-color: var(--dot-primary);
  box-shadow: 0 0 0 3px var(--dot-primary-ghost);
}

.input-container__textarea {
  flex: 1;
  border: none;
  outline: none;
  resize: none;
  font-family: var(--font-sans);
  font-size: var(--text-base);
  line-height: 1.6;
  color: var(--dot-text);
  background: transparent;
  max-height: 150px;
  min-height: 24px;
}

.input-container__textarea::placeholder {
  color: var(--dot-text-muted);
}

.input-container__send {
  width: 38px;
  height: 38px;
  border-radius: var(--radius-full);
  background: var(--dot-primary);
  border: none;
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
  transition: all var(--transition-fast);
}

.input-container__send:hover {
  background: var(--dot-primary-dark);
}

.input-container__send:disabled {
  background: var(--dot-border);
  cursor: not-allowed;
}

.input-container__send svg {
  width: 18px;
  height: 18px;
}

.chat__disclaimer {
  text-align: center;
  font-size: var(--text-xs);
  color: var(--dot-text-muted);
  margin-top: var(--sp-2);
  max-width: 780px;
  margin-left: auto;
  margin-right: auto;
}

/* --- Memory Panel (slide-in from right) --- */
.memory-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 320px;
  height: 100vh;
  background: var(--dot-surface);
  border-left: 1px solid var(--dot-border-light);
  box-shadow: var(--shadow-lg);
  z-index: 200;
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
}

.memory-panel--open {
  transform: translateX(0);
}

.memory-panel__header {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: var(--sp-4) var(--sp-5);
  border-bottom: 1px solid var(--dot-border-light);
}

.memory-panel__title {
  font-size: var(--text-base);
  font-weight: 600;
}

.memory-panel__content {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-4);
}

.memory-item {
  display: flex;
  align-items: flex-start;
  gap: var(--sp-2);
  padding: var(--sp-3);
  border-radius: var(--radius-md);
  margin-bottom: var(--sp-2);
  background: var(--dot-surface-hover);
}

.memory-item__category {
  flex-shrink: 0;
}

.memory-item__text {
  font-size: var(--text-sm);
  color: var(--dot-text);
  line-height: 1.5;
}

.memory-empty {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  height: 200px;
  color: var(--dot-text-muted);
  font-size: var(--text-sm);
  text-align: center;
  gap: var(--sp-3);
}

/* --- Overlay for panels --- */
.overlay {
  position: fixed;
  inset: 0;
  background: rgba(0, 0, 0, 0.3);
  z-index: 150;
  opacity: 0;
  pointer-events: none;
  transition: opacity var(--transition-base);
}

.overlay--visible {
  opacity: 1;
  pointer-events: auto;
}

/* --- Responsive --- */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    left: 0;
    height: 100vh;
    z-index: 200;
    transform: translateX(-100%);
  }

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

  .topbar__menu-btn {
    display: flex;
  }

  .sidebar__close-btn {
    display: flex;
  }

  .chat__messages {
    padding: var(--sp-4);
  }

  .chat__input-area {
    padding: var(--sp-3);
  }

  .model-slots-bar {
    padding: var(--sp-2) var(--sp-3);
  }

  .slot-section__header {
    display: none;
  }

  .slot-grid {
    gap: var(--sp-1);
  }

  .slot-btn {
    font-size: 10px;
    padding: 2px 6px;
    min-height: 24px;
  }

  .slot-picker {
    width: calc(100vw - 24px);
    left: 12px !important;
  }

  .memory-panel {
    width: 100%;
  }
}

@media (max-width: 480px) {
  .message {
    gap: var(--sp-2);
  }

  .message__avatar {
    width: 28px;
    height: 28px;
  }

  .message__bubble {
    padding: var(--sp-2) var(--sp-3);
    font-size: var(--text-sm);
  }
}

/* --- Checker Side Panel --- */
.checker-panel {
  position: fixed;
  top: 0;
  right: 0;
  width: 300px;
  height: 100vh;
  background: var(--dot-surface);
  border-left: 1px solid var(--dot-border-light);
  box-shadow: var(--shadow-lg);
  z-index: 100; /* below overlay (150) so memory panel etc still work */
  transform: translateX(100%);
  transition: transform var(--transition-base);
  display: flex;
  flex-direction: column;
  pointer-events: auto; /* always clickable, never blocked */
}

.checker-panel--open {
  transform: translateX(0);
}

.checker-panel__body {
  flex: 1;
  overflow-y: auto;
  padding: var(--sp-4);
}

.checker-panel__footer {
  padding: var(--sp-3) var(--sp-4);
  border-top: 1px solid var(--dot-border-light);
}