:root {
  --bg-app: #0A0D14;
  --bg-sidebar: #101522;
  --bg-card: #151C2C;
  --bg-card-hover: #1C263C;
  --bg-input: #121826;
  --border: #212C42;
  --border-focus: #4D6BFE;
  
  --deepseek-blue: #4D6BFE;
  --deepseek-blue-hover: #3D5AFE;
  --deepseek-glow: rgba(77, 107, 254, 0.25);
  
  --text-primary: #F8FAFC;
  --text-secondary: #94A3B8;
  --text-muted: #64748B;
  
  --success: #10B981;
  --warning: #F59E0B;
  --danger: #EF4444;
  
  --think-bg: rgba(77, 107, 254, 0.06);
  --think-border: rgba(77, 107, 254, 0.25);
  --think-text: #93C5FD;

  --font-sans: 'Inter', 'Vazirmatn', -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  --font-mono: 'JetBrains Mono', 'Vazirmatn', 'Fira Code', 'Courier New', monospace;
  
  --safe-bottom: env(safe-area-inset-bottom, 0px);
}


*, *::before, *::after {
  box-sizing: border-box;
  margin: 0;
  padding: 0;
  -webkit-tap-highlight-color: transparent;
  max-width: 100%;
}

html, body {
  width: 100%;
  max-width: 100vw;
  height: 100%;
  height: 100dvh;
  overflow-x: hidden !important;
  overflow-y: hidden;
  font-family: var(--font-sans);
  background-color: var(--bg-app);
  color: var(--text-primary);
  direction: ltr;
  text-align: left;
  position: fixed;
  left: 0;
  top: 0;
  right: 0;
  bottom: 0;
}


/* Authentication Modal */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(10, 13, 20, 0.85);
  backdrop-filter: blur(14px);
  display: flex;
  align-items: center;
  justify-content: center;
  z-index: 9999;
  opacity: 0;
  pointer-events: none;
  transition: all 0.3s ease;
  padding: 20px;
}

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

.modal-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 24px;
  padding: 36px 28px;
  width: 100%;
  max-width: 400px;
  text-align: center;
  box-shadow: 0 24px 48px rgba(0, 0, 0, 0.6);
  animation: modalScale 0.3s ease;
}

@keyframes modalScale {
  from { transform: scale(0.92); opacity: 0; }
  to { transform: scale(1); opacity: 1; }
}

.modal-icon {
  width: 60px;
  height: 60px;
  background: linear-gradient(135deg, var(--deepseek-blue), #7C3AED);
  color: #fff;
  border-radius: 18px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 26px;
  margin: 0 auto 20px;
  box-shadow: 0 8px 24px var(--deepseek-glow);
}

.modal-card h2 {
  font-size: 22px;
  font-weight: 700;
  margin-bottom: 8px;
}

.modal-card p {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.5;
  margin-bottom: 24px;
}

.auth-input-wrapper {
  position: relative;
  margin-bottom: 20px;
}

.auth-input-wrapper i {
  position: absolute;
  left: 16px;
  top: 50%;
  transform: translateY(-50%);
  color: var(--text-muted);
}

.auth-input-wrapper input {
  width: 100%;
  padding: 14px 16px 14px 44px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  border-radius: 14px;
  color: var(--text-primary);
  font-size: 15px;
  font-family: var(--font-sans);
  outline: none;
  transition: all 0.2s;
}

.auth-input-wrapper input:focus {
  border-color: var(--deepseek-blue);
  box-shadow: 0 0 0 3px var(--deepseek-glow);
}

.btn-primary-auth {
  width: 100%;
  padding: 14px;
  background: var(--deepseek-blue);
  color: #fff;
  border: none;
  border-radius: 14px;
  font-size: 15px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 10px;
  transition: all 0.2s;
}

.btn-primary-auth:hover {
  background: var(--deepseek-blue-hover);
  box-shadow: 0 8px 20px var(--deepseek-glow);
}

.auth-error-msg {
  color: var(--danger);
  font-size: 13px;
  margin-top: 12px;
  display: none;
}

/* App Layout */
.app-layout {
  display: flex;
  height: 100%;
  height: 100dvh;
  width: 100vw;
  max-width: 100vw;
  overflow-x: hidden !important;
  overflow-y: hidden;
}

/* Sidebar */
.sidebar {
  width: 280px;
  max-width: 85vw;
  background: var(--bg-sidebar);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  height: 100%;
  z-index: 100;
  transition: transform 0.3s cubic-bezier(0.4, 0, 0.2, 1);
}


.sidebar-top {
  padding: 20px 18px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
}

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

.brand-badge-icon {
  width: 38px;
  height: 38px;
  background: var(--deepseek-blue);
  color: #fff;
  border-radius: 12px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 18px;
  box-shadow: 0 4px 14px var(--deepseek-glow);
}

.brand-name {
  font-size: 16px;
  font-weight: 700;
  letter-spacing: -0.3px;
  display: block;
}

.brand-subtitle {
  font-size: 11px;
  color: var(--deepseek-blue);
  font-weight: 600;
  display: block;
}

.sidebar-action {
  padding: 0 16px 14px;
}

.btn-new-chat {
  width: 100%;
  padding: 12px;
  background: rgba(77, 107, 254, 0.12);
  color: var(--deepseek-blue);
  border: 1px solid rgba(77, 107, 254, 0.25);
  border-radius: 12px;
  font-family: var(--font-sans);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  transition: all 0.2s;
}

.btn-new-chat:hover {
  background: var(--deepseek-blue);
  color: #fff;
  box-shadow: 0 6px 16px var(--deepseek-glow);
}

.sidebar-section-title {
  padding: 12px 18px 6px;
  font-size: 12px;
  font-weight: 600;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: space-between;
  text-transform: uppercase;
  letter-spacing: 0.5px;
}

.btn-icon-subtle {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 4px;
  font-size: 12px;
  border-radius: 4px;
  transition: color 0.2s;
}

.btn-icon-subtle:hover {
  color: var(--text-primary);
}

.sessions-scroll {
  flex: 1;
  overflow-y: auto;
  padding: 4px 12px 12px;
}

.session-item {
  padding: 10px 14px;
  margin-bottom: 4px;
  border-radius: 10px;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: space-between;
  color: var(--text-secondary);
  font-size: 13px;
  transition: all 0.2s;
}

.session-item:hover {
  background: var(--bg-card);
  color: var(--text-primary);
}

.session-item.active {
  background: var(--bg-card);
  color: var(--deepseek-blue);
  border: 1px solid rgba(77, 107, 254, 0.3);
  font-weight: 600;
}

.session-item-title {
  white-space: nowrap;
  overflow: hidden;
  text-overflow: ellipsis;
  max-width: 170px;
}

.sidebar-footer {
  padding: 14px;
  border-top: 1px solid var(--border);
  background: rgba(16, 21, 34, 0.7);
}

.system-mini-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 10px 12px;
  font-size: 11px;
}

.sys-row {
  display: flex;
  justify-content: space-between;
  margin-bottom: 4px;
}

.sys-row:last-child {
  margin-bottom: 0;
}

.sys-label {
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.sys-val {
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-weight: 600;
}

/* Main Panel */
.main-panel {
  flex: 1;
  display: flex;
  flex-direction: column;
  height: 100%;
  width: 100%;
  max-width: 100%;
  background: var(--bg-app);
  position: relative;
  overflow-x: hidden !important;
  overflow-y: hidden;
}

/* Top Header */
.top-header {
  height: 56px;
  border-bottom: 1px solid var(--border);
  padding: 0 12px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: rgba(10, 13, 20, 0.75);
  backdrop-filter: blur(10px);
  z-index: 50;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden;
}

.header-left, .header-right {
  display: flex;
  align-items: center;
  gap: 8px;
  min-width: 0;
}

.model-selector-pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 4px 8px 4px 10px;
  display: flex;
  align-items: center;
  gap: 6px;
  min-width: 0;
  max-width: 200px;
}

.model-icon {
  color: var(--deepseek-blue);
  font-size: 12px;
  flex-shrink: 0;
}

.model-selector-pill select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 12.5px;
  font-weight: 600;
  outline: none;
  cursor: pointer;
  max-width: 160px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.cwd-pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 8px;
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  max-width: 90px;
  overflow: hidden;
  text-overflow: ellipsis;
  white-space: nowrap;
}

.btn-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  border: 1px solid transparent;
  background: transparent;
  color: var(--text-secondary);
  display: flex;
  align-items: center;
  justify-content: center;
  cursor: pointer;
  font-size: 15px;
  transition: all 0.2s;
  flex-shrink: 0;
}

.btn-icon:hover {
  background: var(--bg-card);
  border-color: var(--border);
  color: var(--text-primary);
}

/* Views Wrapper */
.views-wrapper {
  flex: 1;
  position: relative;
  overflow-x: hidden !important;
  overflow-y: hidden;
  display: flex;
  flex-direction: column;
  width: 100%;
  max-width: 100%;
}

.view-section {
  display: none;
  flex: 1;
  flex-direction: column;
  height: 100%;
  width: 100%;
  max-width: 100%;
  overflow-x: hidden !important;
  overflow-y: hidden;
}

.view-section.active {
  display: flex;
}

/* Chat View */
.chat-viewport {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden !important;
  padding: 16px 12px;
  display: flex;
  flex-direction: column;
  gap: 16px;
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  -webkit-overflow-scrolling: touch;
}


.hero-screen {
  text-align: center;
  margin: auto 0;
  padding: 20px 10px 40px;
}

.hero-glow-logo {
  width: 64px;
  height: 64px;
  background: linear-gradient(135deg, var(--deepseek-blue), #8B5CF6);
  border-radius: 20px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 28px;
  color: #fff;
  margin: 0 auto 18px;
  box-shadow: 0 12px 30px var(--deepseek-glow);
}

.hero-screen h1 {
  font-size: 24px;
  font-weight: 800;
  margin-bottom: 8px;
  letter-spacing: -0.5px;
}

.hero-screen p {
  color: var(--text-secondary);
  font-size: 14px;
  margin-bottom: 28px;
  max-width: 520px;
  margin-left: auto;
  margin-right: auto;
}

.suggestion-grid {
  display: grid;
  grid-template-columns: repeat(auto-fit, minmax(220px, 1fr));
  gap: 10px;
  max-width: 720px;
  margin: 0 auto;
}

.suggestion-pill {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  display: flex;
  align-items: center;
  gap: 12px;
  color: var(--text-secondary);
  font-family: var(--font-sans);
  font-size: 13px;
  cursor: pointer;
  text-align: left;
  transition: all 0.2s;
}

.suggestion-pill i {
  color: var(--deepseek-blue);
  font-size: 16px;
}

.suggestion-pill:hover {
  background: var(--bg-card-hover);
  border-color: var(--deepseek-blue);
  color: var(--text-primary);
  transform: translateY(-2px);
}

/* Messages */
.messages-container {
  display: flex;
  flex-direction: column;
  gap: 20px;
}

.msg-row {
  display: flex;
  gap: 14px;
  max-width: 100%;
}

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

.msg-avatar-circle {
  width: 34px;
  height: 34px;
  border-radius: 10px;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
}

.msg-row.user .msg-avatar-circle {
  background: #3B82F6;
  color: #fff;
}

.msg-row.assistant .msg-avatar-circle {
  background: var(--deepseek-blue);
  color: #fff;
  box-shadow: 0 4px 12px var(--deepseek-glow);
}

.msg-bubble-wrap {
  flex: 1;
  max-width: calc(100% - 48px);
}

.msg-row.user .msg-text-bubble {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px 16px 4px 16px;
  padding: 12px 16px;
  font-size: 14.5px;
  line-height: 1.6;
  color: var(--text-primary);
  display: inline-block;
  float: right;
  word-break: break-word;
  unicode-bidi: plaintext;
  text-align: start;
}

.msg-row.assistant .msg-text-bubble {
  font-size: 14.5px;
  line-height: 1.7;
  color: var(--text-primary);
  word-break: break-word;
  unicode-bidi: plaintext;
  text-align: start;
}

.msg-text-bubble pre, .msg-text-bubble code {
  direction: ltr !important;
  text-align: left !important;
  unicode-bidi: isolate;
}


/* DeepSeek Thinking / Reasoning Card */
.deepthink-card {
  background: var(--think-bg);
  border: 1px solid var(--think-border);
  border-radius: 12px;
  margin-bottom: 12px;
  overflow: hidden;
  transition: all 0.2s;
}

.deepthink-header {
  padding: 9px 14px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  cursor: pointer;
  font-size: 12.5px;
  font-weight: 600;
  color: var(--think-text);
  user-select: none;
}

.deepthink-header-left {
  display: flex;
  align-items: center;
  gap: 8px;
}

.deepthink-content {
  padding: 12px 16px;
  font-size: 12.5px;
  color: var(--text-secondary);
  line-height: 1.6;
  border-top: 1px dashed var(--think-border);
  font-family: var(--font-mono);
  max-height: 280px;
  overflow-y: auto;
  display: none;
  white-space: pre-wrap;
}

.deepthink-card.expanded .deepthink-content {
  display: block;
}

/* Tool execution chip */
.tool-execution-chip {
  background: rgba(33, 44, 66, 0.7);
  border: 1px solid var(--border);
  border-radius: 8px;
  padding: 5px 10px;
  font-size: 11.5px;
  font-family: var(--font-mono);
  color: var(--text-secondary);
  display: inline-flex;
  align-items: center;
  gap: 6px;
  margin-bottom: 8px;
}

.tool-execution-chip i {
  color: var(--warning);
}

/* Markdown Code Blocks */
.msg-text-bubble pre {
  background: #0D1117;
  border: 1px solid var(--border);
  border-radius: 12px;
  padding: 12px 14px;
  margin: 12px 0;
  overflow-x: auto;
}

.msg-text-bubble code {
  font-family: var(--font-mono);
  font-size: 13px;
}

.msg-text-bubble p {
  margin-bottom: 10px;
}

.msg-text-bubble p:last-child {
  margin-bottom: 0;
}

/* Chat Input Dock */
.chat-input-dock {
  padding: 10px 16px calc(12px + var(--safe-bottom));
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
}

.input-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 20px;
  padding: 10px 14px;
  box-shadow: 0 8px 24px rgba(0, 0, 0, 0.4);
  transition: border-color 0.2s, box-shadow 0.2s;
}

.input-card:focus-within {
  border-color: var(--deepseek-blue);
  box-shadow: 0 8px 24px var(--deepseek-glow);
}

.input-features-bar {
  display: flex;
  align-items: center;
  gap: 8px;
  margin-bottom: 8px;
}

.attachment-preview-bar {
  padding: 6px 0 10px;
  display: flex;
  align-items: center;
}

.attachment-chip {
  background: var(--bg-input);
  border: 1px solid var(--border-focus);
  border-radius: 12px;
  padding: 4px 10px 4px 6px;
  display: inline-flex;
  align-items: center;
  gap: 8px;
  font-size: 12px;
  color: var(--text-primary);
  box-shadow: 0 2px 8px rgba(0, 0, 0, 0.3);
}

.attachment-chip img {
  width: 28px;
  height: 28px;
  border-radius: 6px;
  object-fit: cover;
}

.btn-remove-attachment {
  background: transparent;
  border: none;
  color: var(--text-muted);
  cursor: pointer;
  padding: 2px;
  font-size: 12px;
}

.btn-remove-attachment:hover {
  color: var(--danger);
}

.btn-attach {
  font-size: 16px;
  padding: 6px 8px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: 8px;
}

.btn-attach:hover {
  color: var(--deepseek-blue);
  background: var(--bg-input);
}


.feature-chip {
  background: var(--bg-input);
  border: 1px solid var(--border);
  padding: 4px 10px;
  border-radius: 16px;
  font-size: 11.5px;
  font-weight: 500;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
  cursor: pointer;
  transition: all 0.2s;
}

.feature-chip.active {
  background: rgba(77, 107, 254, 0.15);
  border-color: var(--deepseek-blue);
  color: var(--deepseek-blue);
  font-weight: 600;
}

.status-indicator {
  margin-left: auto;
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  gap: 6px;
}

.dot-status {
  width: 7px;
  height: 7px;
  border-radius: 50%;
}
.dot-status.green { background: var(--success); }

.input-field-row {
  display: flex;
  align-items: flex-end;
  gap: 8px;
}

.input-field-row textarea {
  flex: 1;
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 14.5px;
  line-height: 1.45;
  resize: none;
  max-height: 140px;
  outline: none;
  padding: 4px 0;
}

.btn-send-round, .btn-stop-round {
  width: 36px;
  height: 36px;
  border-radius: 50%;
  border: none;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 14px;
  flex-shrink: 0;
  transition: transform 0.15s, background 0.2s;
}

.btn-send-round {
  background: var(--deepseek-blue);
  color: #fff;
}

.btn-send-round:active {
  transform: scale(0.92);
}

.btn-stop-round {
  background: var(--danger);
  color: #fff;
}

/* Terminal View */
.terminal-view-header {
  padding: 12px 16px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  background: var(--bg-sidebar);
  gap: 10px;
  flex-wrap: wrap;
}

.screen-picker-wrap {
  display: flex;
  align-items: center;
  gap: 8px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 4px 8px;
}

.screen-picker-wrap select {
  background: transparent;
  border: none;
  color: var(--text-primary);
  font-family: var(--font-sans);
  font-size: 13px;
  outline: none;
  cursor: pointer;
}

.terminal-quick-actions {
  display: flex;
  align-items: center;
  gap: 6px;
}

.btn-action-pill {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 8px;
  font-size: 12px;
  cursor: pointer;
  display: flex;
  align-items: center;
  gap: 6px;
  transition: all 0.2s;
}

.btn-action-pill.danger {
  color: var(--danger);
}
.btn-action-pill.danger:active {
  background: var(--danger);
  color: #fff;
}

.terminal-screen-wrapper {
  flex: 1;
  display: flex;
  flex-direction: column;
  margin: 12px 16px;
  background: #080C14;
  border: 1px solid var(--border);
  border-radius: 14px;
  overflow: hidden;
}

.terminal-titlebar {
  height: 32px;
  background: #101522;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  padding: 0 12px;
  justify-content: space-between;
}

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

.d {
  width: 10px;
  height: 10px;
  border-radius: 50%;
}
.d.red { background: #EF4444; }
.d.yellow { background: #F59E0B; }
.d.green { background: #10B981; }

.term-title-text {
  font-family: var(--font-mono);
  font-size: 11.5px;
  color: var(--text-muted);
}

.terminal-scroll-area {
  flex: 1;
  padding: 12px;
  overflow-y: auto;
}

.terminal-scroll-area pre {
  font-family: var(--font-mono);
  font-size: 13px;
  line-height: 1.6;
  color: #38BDF8;
  white-space: pre-wrap;
  word-break: break-word;
  unicode-bidi: plaintext;
}


/* Mobile Touch Keys Bar */
.touch-keys-bar {
  display: flex;
  padding: 4px 16px;
  gap: 6px;
  overflow-x: auto;
}

.touch-key {
  padding: 6px 12px;
  background: var(--bg-card);
  border: 1px solid var(--border);
  color: var(--text-secondary);
  border-radius: 8px;
  font-family: var(--font-mono);
  font-size: 12px;
  cursor: pointer;
  flex-shrink: 0;
}

.touch-key:active {
  background: var(--deepseek-blue);
  color: #fff;
}

.terminal-input-dock {
  padding: 8px 16px calc(8px + var(--safe-bottom));
  display: flex;
  gap: 8px;
}

.terminal-input-dock input {
  flex: 1;
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 10px;
  padding: 10px 14px;
  color: var(--text-primary);
  font-family: var(--font-mono);
  font-size: 13px;
  outline: none;
}

.btn-send-screen {
  padding: 0 16px;
  background: var(--deepseek-blue);
  color: #fff;
  border: none;
  border-radius: 10px;
  cursor: pointer;
}

/* History Page */
.history-page, .settings-page {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden !important;
  padding: 16px 12px calc(20px + var(--safe-bottom));
  max-width: 860px;
  width: 100%;
  margin: 0 auto;
  -webkit-overflow-scrolling: touch;
}

.history-header {
  margin-bottom: 16px;
}

.history-header h2, .settings-page h2 {
  font-size: 19px;
  font-weight: 700;
  margin-bottom: 4px;
}

.history-header p {
  font-size: 13px;
  color: var(--text-secondary);
}

.history-grid {
  display: grid;
  grid-template-columns: 1fr;
  gap: 12px;
  width: 100%;
  max-width: 100%;
}

@media (min-width: 600px) {
  .history-grid {
    grid-template-columns: repeat(auto-fill, minmax(280px, 1fr));
  }
}

.history-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 14px;
  padding: 14px;
  cursor: pointer;
  transition: all 0.2s;
  display: flex;
  flex-direction: column;
  gap: 10px;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

.history-card:hover {
  border-color: var(--deepseek-blue);
  transform: translateY(-2px);
}

.history-card-title {
  font-size: 14px;
  font-weight: 600;
  word-break: break-word;
}

.history-card-meta {
  font-size: 11.5px;
  color: var(--text-muted);
  display: flex;
  flex-direction: column;
  gap: 3px;
}

/* Settings Page */
.settings-card {
  background: var(--bg-card);
  border: 1px solid var(--border);
  border-radius: 16px;
  padding: 16px;
  margin-bottom: 14px;
  width: 100%;
  max-width: 100%;
  overflow: hidden;
}

.settings-card h3 {
  font-size: 14.5px;
  font-weight: 600;
  margin-bottom: 12px;
  display: flex;
  align-items: center;
  gap: 8px;
}

.settings-row {
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 12px 0;
  border-top: 1px solid var(--border);
  font-size: 13px;
  gap: 10px;
  flex-wrap: wrap;
  width: 100%;
  max-width: 100%;
}

.settings-select {
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  padding: 7px 12px;
  border-radius: 8px;
  font-family: var(--font-sans);
  font-size: 12.5px;
  outline: none;
  max-width: 100%;
  cursor: pointer;
}

.btn-secondary {
  padding: 6px 14px;
  background: var(--bg-input);
  border: 1px solid var(--border);
  color: var(--text-primary);
  border-radius: 8px;
  font-size: 13px;
  cursor: pointer;
}

.btn-secondary.danger {
  color: var(--danger);
}

/* Bottom Navigation Bar (Android Mobile) */
.bottom-nav {
  display: none;
  height: 56px;
  background: rgba(16, 21, 34, 0.95);
  backdrop-filter: blur(12px);
  border-top: 1px solid var(--border);
  padding-bottom: var(--safe-bottom);
  z-index: 100;
  width: 100%;
  max-width: 100vw;
  overflow-x: hidden !important;
  position: relative;
}


.bottom-nav-item {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  gap: 3px;
  background: transparent;
  border: none;
  color: var(--text-muted);
  font-family: var(--font-sans);
  font-size: 11px;
  cursor: pointer;
  transition: color 0.15s;
}

.bottom-nav-item i {
  font-size: 16px;
}

.bottom-nav-item.active {
  color: var(--deepseek-blue);
  font-weight: 600;
}

.loading-state {
  text-align: center;
  padding: 30px;
  color: var(--text-muted);
  font-size: 13px;
}

.hide { display: none !important; }

/* Responsive adjustments */
@media (max-width: 768px) {
  .sidebar {
    position: fixed;
    top: 0;
    bottom: 0;
    left: 0;
    transform: translateX(-100%);
    box-shadow: 10px 0 30px rgba(0, 0, 0, 0.8);
  }
  
  .sidebar.open {
    transform: translateX(0);
  }
  
  .bottom-nav {
    display: flex;
  }
  
  .mobile-only {
    display: inline-flex !important;
  }
  
  .chat-viewport {
    padding-bottom: 10px;
  }
}

@media (min-width: 769px) {
  .mobile-only {
    display: none !important;
  }
}