/* ============================================================
   AI SSH - Aurora 主题
   现代深色渐变 UI，玻璃拟态 + 氛围光效
   ============================================================ */

:root {
  --bg-primary: #0b0d14;
  --bg-secondary: #10131d;
  --bg-surface: #171b29;
  --bg-hover: #1f2436;
  --bg-elevated: #262c40;
  --border: rgba(148, 163, 184, 0.12);
  --border-light: rgba(148, 163, 184, 0.22);
  --brand: #6C8CFF;
  --brand-2: #8B5CF6;
  --brand-gradient: linear-gradient(135deg, #6C8CFF 0%, #8B5CF6 100%);
  --brand-glow: rgba(108, 140, 255, 0.14);
  --text: #e7eaf3;
  --text-secondary: #a5adc0;
  --text-muted: #6b7488;
  --text-on-brand: #fff;
  --danger: #f0616d;
  --success: #34d399;
  --warning: #fbbf24;
  --info: #38bdf8;
  --font-sans: -apple-system, BlinkMacSystemFont, 'Segoe UI', 'PingFang SC', 'Hiragino Sans GB', 'Microsoft YaHei', sans-serif;
  --font-mono: 'JetBrains Mono', 'SF Mono', 'Fira Code', 'Cascadia Code', monospace;
  --radius: 10px;
  --radius-sm: 6px;
  --radius-lg: 16px;
  --radius-xl: 22px;
  --radius-full: 9999px;
  --shadow: 0 8px 40px rgba(0, 0, 0, 0.45);
  --shadow-sm: 0 2px 12px rgba(0, 0, 0, 0.3);
  --sidebar-w: 268px;
  --transition: 0.22s cubic-bezier(0.4, 0, 0.2, 1);
}

*, *::before, *::after { margin: 0; padding: 0; box-sizing: border-box; }
html, body { height: 100%; }
body {
  display: flex;
  overflow: hidden;
  background: var(--bg-primary);
  color: var(--text);
  font-family: var(--font-sans);
  -webkit-font-smoothing: antialiased;
  position: relative;
}

/* Ambient aurora background */
body::before {
  content: '';
  position: fixed;
  inset: 0;
  z-index: 0;
  pointer-events: none;
  background:
    radial-gradient(600px 400px at 15% 0%, rgba(108, 140, 255, 0.10), transparent 70%),
    radial-gradient(700px 500px at 85% 100%, rgba(139, 92, 246, 0.10), transparent 70%),
    radial-gradient(500px 400px at 60% 20%, rgba(56, 189, 248, 0.05), transparent 70%);
}

::-webkit-scrollbar { width: 8px; height: 8px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: rgba(148, 163, 184, 0.18); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: rgba(148, 163, 184, 0.32); }

/* ===== Sidebar ===== */
.sidebar {
  width: var(--sidebar-w);
  min-width: var(--sidebar-w);
  height: 100vh;
  background: rgba(16, 19, 29, 0.72);
  backdrop-filter: blur(16px);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  flex-shrink: 0;
  transition: margin var(--transition);
  z-index: 50;
}
.sidebar.collapsed { margin-left: calc(-1 * var(--sidebar-w)); }

.sidebar-top {
  padding: 18px 16px;
  display: flex;
  align-items: center;
  justify-content: space-between;
  border-bottom: 1px solid var(--border);
}
.sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 0.2px;
  color: var(--text);
}
.sidebar-logo svg { width: 22px; height: 22px; filter: drop-shadow(0 0 8px rgba(108, 140, 255, 0.5)); }
.sidebar-close {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 15px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.sidebar-close:hover { background: var(--bg-hover); color: var(--text); }

.sidebar-actions { padding: 12px 10px; }
.new-chat-btn {
  width: 100%;
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  padding: 11px 12px;
  background: var(--brand-gradient);
  border: none;
  border-radius: var(--radius);
  color: var(--text-on-brand);
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  box-shadow: 0 4px 20px rgba(108, 140, 255, 0.28);
}
.new-chat-btn:hover { transform: translateY(-1px); box-shadow: 0 6px 26px rgba(108, 140, 255, 0.4); }
.new-chat-btn:active { transform: translateY(0); }

.sidebar-history {
  flex: 1;
  overflow-y: auto;
  padding: 4px 10px;
}
.history-empty {
  padding: 28px 12px;
  text-align: center;
  color: var(--text-muted);
  font-size: 12px;
  line-height: 1.6;
}

.sidebar-bottom {
  padding: 10px;
  border-top: 1px solid var(--border);
}
.sidebar-item {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 10px 12px;
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
}
.sidebar-item:hover { background: var(--bg-hover); color: var(--text); }
.sidebar-item svg { flex-shrink: 0; opacity: 0.85; }
.status-badge {
  margin-left: auto;
  font-size: 11px;
  font-weight: 500;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 3px 10px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
}
.status-badge.connected {
  color: var(--success);
  background: rgba(52, 211, 153, 0.1);
  border-color: rgba(52, 211, 153, 0.25);
}

/* ===== Main Content ===== */
.main {
  flex: 1;
  display: flex;
  flex-direction: column;
  min-width: 0;
  height: 100vh;
  position: relative;
  z-index: 1;
  background: transparent;
}

/* ===== Main Header ===== */
.main-header {
  display: flex;
  align-items: center;
  padding: 0 18px;
  height: 56px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
  gap: 12px;
  background: rgba(16, 19, 29, 0.6);
  backdrop-filter: blur(14px);
}
.menu-btn {
  background: none;
  border: none;
  color: var(--text-secondary);
  font-size: 20px;
  cursor: pointer;
  padding: 4px 8px;
  border-radius: var(--radius-sm);
  display: none;
  transition: var(--transition);
}
.menu-btn:hover { color: var(--text); background: var(--bg-hover); }

.view-tabs {
  display: flex;
  gap: 3px;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius-full);
  padding: 4px;
}
.view-tab {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 16px;
  border: none;
  border-radius: var(--radius-full);
  background: transparent;
  color: var(--text-muted);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  white-space: nowrap;
}
.view-tab:hover { color: var(--text-secondary); }
.view-tab.active {
  background: var(--brand-gradient);
  color: var(--text-on-brand);
  box-shadow: 0 3px 14px rgba(108, 140, 255, 0.35);
}
.view-tab svg { flex-shrink: 0; }

.header-spacer { flex: 1; }
.header-conn-status {
  display: flex;
  align-items: center;
  gap: 7px;
  font-size: 12px;
  color: var(--text-secondary);
  background: var(--bg-surface);
  border: 1px solid var(--border);
  padding: 5px 12px;
  border-radius: var(--radius-full);
}
.header-conn-status .dot {
  width: 8px;
  height: 8px;
  border-radius: 50%;
  background: var(--text-muted);
  flex-shrink: 0;
  transition: var(--transition);
}
.header-conn-status .dot.connected {
  background: var(--success);
  box-shadow: 0 0 8px rgba(52, 211, 153, 0.6);
  animation: pulse 2s infinite;
}
.header-btn {
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  color: var(--text-secondary);
  font-size: 15px;
  cursor: pointer;
  padding: 7px 11px;
  transition: var(--transition);
  font-family: var(--font-sans);
}
.header-btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-light); }

@keyframes pulse {
  0%, 100% { box-shadow: 0 0 0 0 rgba(52, 211, 153, 0.5); }
  50% { box-shadow: 0 0 0 5px rgba(52, 211, 153, 0); }
}

/* ===== Chat Area ===== */
.chat-area {
  flex: 1;
  overflow-y: auto;
  overflow-x: hidden;
  display: flex;
  flex-direction: column;
}
.messages-container {
  flex: 1;
  max-width: 780px;
  width: 100%;
  margin: 0 auto;
  padding: 12px 24px 24px;
  display: flex;
  flex-direction: column;
  gap: 2px;
}

/* ===== View Panels ===== */
.view-panel { display: none; flex: 1; flex-direction: column; min-height: 0; }
.view-panel.active { display: flex; }

/* ===== Welcome Screen ===== */
.welcome {
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  text-align: center;
  flex: 1;
  padding: 80px 24px 60px;
  animation: fadeUp 0.5s ease;
}
.welcome-icon {
  width: 64px;
  height: 64px;
  margin-bottom: 28px;
  position: relative;
}
.welcome-icon::after {
  content: '';
  position: absolute;
  inset: -18px;
  background: var(--brand-glow);
  filter: blur(30px);
  border-radius: 50%;
  z-index: -1;
}
.welcome-icon svg { width: 64px; height: 64px; filter: drop-shadow(0 4px 24px rgba(108, 140, 255, 0.55)); }
.welcome h1 {
  font-size: 27px;
  font-weight: 700;
  margin-bottom: 10px;
  letter-spacing: -0.5px;
  background: linear-gradient(120deg, #ffffff, #a5adc0);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.welcome-sub {
  color: var(--text-secondary);
  font-size: 14px;
  line-height: 1.7;
  max-width: 420px;
  margin-bottom: 36px;
}
.welcome-suggestions {
  display: grid;
  grid-template-columns: 1fr 1fr;
  gap: 10px;
  width: 100%;
  max-width: 440px;
}
.suggestion {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  background: rgba(23, 27, 41, 0.8);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  color: var(--text-secondary);
  font-size: 13px;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  text-align: left;
  backdrop-filter: blur(8px);
}
.suggestion:hover {
  border-color: var(--brand);
  background: var(--brand-glow);
  color: var(--text);
  transform: translateY(-2px);
  box-shadow: 0 8px 24px rgba(108, 140, 255, 0.15);
}
.suggestion-icon {
  font-size: 18px;
  flex-shrink: 0;
  width: 34px;
  height: 34px;
  display: flex;
  align-items: center;
  justify-content: center;
  background: var(--bg-surface);
  border: 1px solid var(--border);
  border-radius: var(--radius);
}
.suggestion-text { line-height: 1.4; }

/* ===== Messages (bubbles) ===== */
.message {
  display: flex;
  padding: 8px 0;
  animation: msgIn 0.25s ease;
}
.message.user { justify-content: flex-end; }
.message.assistant { justify-content: flex-start; }

.msg-content {
  font-size: 14px;
  line-height: 1.7;
  white-space: pre-wrap;
  word-break: break-word;
  color: var(--text);
  max-width: 82%;
  padding: 12px 16px;
  border-radius: var(--radius-lg);
  border: 1px solid var(--border);
}
.message.user .msg-content {
  background: var(--brand-gradient);
  color: #fff;
  border: none;
  border-bottom-right-radius: 6px;
  box-shadow: 0 4px 18px rgba(108, 140, 255, 0.25);
}
.message.assistant .msg-content {
  background: rgba(23, 27, 41, 0.85);
  border-bottom-left-radius: 6px;
  backdrop-filter: blur(8px);
}
.message.error .msg-content {
  color: #fca5a5;
  font-size: 13px;
  background: rgba(240, 97, 109, 0.08);
  border-color: rgba(240, 97, 109, 0.25);
  border-radius: var(--radius);
}

.message.reasoning,
.message.tool-call,
.message.tool-result {
  justify-content: flex-start;
}
.message.reasoning .msg-content,
.message.tool-call,
.message.tool-result {
  background: transparent;
  border: none;
  padding: 0;
  max-width: 100%;
  backdrop-filter: none;
}

/* ===== Markdown Rendering ===== */
.msg-content strong { font-weight: 700; color: var(--text); }
.message.user .msg-content strong { color: #fff; }
.message.user .msg-content .inline-code {
  background: rgba(255, 255, 255, 0.2);
  color: #fff;
  border-color: rgba(255, 255, 255, 0.2);
}
.msg-content .inline-code {
  font-family: var(--font-mono);
  font-size: 13px;
  background: rgba(108, 140, 255, 0.12);
  padding: 2px 7px;
  border-radius: 5px;
  color: #93c5fd;
  border: 1px solid rgba(108, 140, 255, 0.2);
}
.msg-content .code-block {
  margin: 10px 0;
  border-radius: var(--radius);
  overflow: hidden;
  border: 1px solid var(--border);
  box-shadow: var(--shadow-sm);
}
.msg-content .code-header {
  font-size: 11px;
  font-weight: 600;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 6px 14px;
  border-bottom: 1px solid var(--border);
  font-family: var(--font-sans);
  text-transform: uppercase;
  letter-spacing: 0.6px;
}
.msg-content .code-block pre {
  margin: 0;
  padding: 14px 16px;
  background: #0a0c12;
  overflow-x: auto;
}
.msg-content .code-block code {
  font-family: var(--font-mono);
  font-size: 13px;
  color: #d6dce8;
  line-height: 1.6;
  white-space: pre;
}
.msg-content .msg-list {
  margin: 4px 0;
  padding-left: 20px;
  list-style: none;
}
.msg-content .msg-list li {
  position: relative;
  padding: 3px 0;
  color: var(--text-secondary);
}
.message.user .msg-content .msg-list li { color: rgba(255, 255, 255, 0.9); }
.msg-content .msg-list li::before {
  content: '';
  position: absolute;
  left: -14px;
  top: 10px;
  width: 6px;
  height: 6px;
  border-radius: 50%;
  background: var(--brand);
}

/* ===== Reasoning Block ===== */
.message.reasoning {
  padding: 4px 0;
}
.reasoning-toggle {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 7px 14px;
  font-size: 12px;
  color: var(--text-muted);
  cursor: pointer;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  background: rgba(23, 27, 41, 0.6);
  transition: var(--transition);
  user-select: none;
  width: fit-content;
}
.reasoning-toggle:hover {
  background: var(--bg-hover);
  color: var(--text-secondary);
  border-color: var(--border-light);
}
.reasoning-arrow {
  font-size: 10px;
  transition: transform 0.2s ease;
}
.message.reasoning.expanded .reasoning-arrow {
  transform: rotate(90deg);
}
.reasoning-content {
  display: none;
  padding: 8px 0 8px 16px;
  border-left: 2px solid var(--border-light);
  margin-left: 20px;
  margin-top: 4px;
}
.message.reasoning.expanded .reasoning-content {
  display: block;
}
.reasoning-text {
  font-size: 12px;
  line-height: 1.7;
  color: var(--text-muted);
  white-space: pre-wrap;
  font-family: var(--font-sans);
}

/* ===== Tool Call ===== */
.message.tool-call {
  padding: 6px 0;
}
.tool-header {
  font-size: 12px;
  font-weight: 500;
  color: var(--warning);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tool-header strong { color: var(--warning); }
.tool-args {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-secondary);
  background: rgba(23, 27, 41, 0.7);
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid rgba(251, 191, 36, 0.18);
}
.tool-arg { padding: 1px 0; }
.tool-arg-key { color: var(--warning); opacity: 0.8; }
.tool-arg-val { color: var(--text-secondary); }
.tool-desc {
  font-family: var(--font-sans);
  color: var(--text-muted);
  font-size: 11px;
  margin-bottom: 4px;
  font-style: italic;
}

/* ===== Tool Result ===== */
.message.tool-result {
  padding: 6px 0;
}
.tool-result-header {
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 6px;
  display: flex;
  align-items: center;
  gap: 6px;
}
.tool-result-header strong { color: var(--text-secondary); }
.tool-result-body {
  font-family: var(--font-mono);
  font-size: 12px;
  color: var(--text-muted);
  background: rgba(10, 12, 18, 0.8);
  padding: 10px 14px;
  border-radius: var(--radius);
  border: 1px solid var(--border);
  max-height: 90px;
  overflow: hidden;
  white-space: pre-wrap;
  word-break: break-word;
  transition: max-height 0.35s ease;
  box-shadow: inset 0 2px 8px rgba(0, 0, 0, 0.3);
}
.tool-result-body.expanded {
  max-height: 2400px;
}
.tool-result-toggle {
  font-size: 11px;
  color: var(--text-muted);
  cursor: pointer;
  padding: 5px 0 2px;
  margin-top: 2px;
  transition: var(--transition);
}
.tool-result-toggle:hover { color: var(--info); }

/* ===== Terminal View ===== */
.terminal-view {
  display: flex;
  flex-direction: column;
  flex: 1;
  min-height: 0;
  margin: 14px;
  background: rgba(10, 12, 18, 0.92);
  border: 1px solid var(--border);
  border-radius: var(--radius-lg);
  overflow: hidden;
  box-shadow: var(--shadow);
}
.term-toolbar {
  display: flex;
  align-items: center;
  padding: 10px 16px;
  gap: 12px;
  background: rgba(23, 27, 41, 0.6);
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}
.term-info {
  display: flex;
  align-items: center;
  gap: 10px;
  font-size: 12px;
  color: var(--text-secondary);
}
.term-label {
  font-weight: 700;
  color: var(--text);
  font-size: 13px;
  background: var(--brand-gradient);
  -webkit-background-clip: text;
  -webkit-text-fill-color: transparent;
  background-clip: text;
}
.term-host-badge {
  font-family: var(--font-mono);
  font-size: 11px;
  color: var(--text-muted);
  background: var(--bg-surface);
  padding: 3px 12px;
  border-radius: var(--radius-full);
  border: 1px solid var(--border);
  transition: var(--transition);
}
.term-host-badge.connected {
  color: var(--success);
  border-color: rgba(52, 211, 153, 0.3);
  background: rgba(52, 211, 153, 0.08);
}
.term-actions { margin-left: auto; display: flex; gap: 8px; }
.term-btn {
  display: flex;
  align-items: center;
  gap: 6px;
  padding: 6px 14px;
  border: 1px solid var(--border);
  border-radius: var(--radius);
  background: var(--bg-surface);
  color: var(--text-secondary);
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
}
.term-btn:hover { background: var(--bg-hover); color: var(--text); border-color: var(--border-light); }
.term-btn.danger { border-color: rgba(240, 97, 109, 0.3); color: var(--danger); }
.term-btn.danger:hover { background: rgba(240, 97, 109, 0.1); }
.term-body {
  flex: 1;
  overflow: hidden;
  min-height: 0;
  background: #0a0c12;
}
.term-body #terminal-container {
  padding: 10px;
  height: 100%;
}
.term-statusbar {
  display: flex;
  align-items: center;
  gap: 20px;
  padding: 5px 16px;
  background: rgba(23, 27, 41, 0.5);
  border-top: 1px solid var(--border);
  font-size: 11px;
  color: var(--text-muted);
  font-family: var(--font-mono);
  flex-shrink: 0;
}
.term-status-item { display: flex; align-items: center; gap: 5px; }
.text-success { color: var(--success); }
.text-muted { color: var(--text-muted); }

.typing { display: inline-flex; gap: 5px; padding: 6px 0; }
.typing span {
  width: 8px; height: 8px; border-radius: 50%;
  background: var(--brand);
  animation: typingBounce 1.4s infinite;
}
.typing span:nth-child(2) { animation-delay: 0.2s; }
.typing span:nth-child(3) { animation-delay: 0.4s; }
@keyframes typingBounce {
  0%, 60%, 100% { transform: translateY(0); opacity: 0.3; }
  30% { transform: translateY(-5px); opacity: 1; }
}
@keyframes msgIn {
  from { opacity: 0; transform: translateY(6px); }
  to { opacity: 1; transform: translateY(0); }
}
@keyframes fadeUp {
  from { opacity: 0; transform: translateY(14px); }
  to { opacity: 1; transform: translateY(0); }
}

/* ===== Input Area ===== */
.input-area {
  padding: 4px 24px 20px;
  flex-shrink: 0;
}
.input-wrapper {
  max-width: 780px;
  margin: 0 auto;
  display: flex;
  align-items: flex-end;
  gap: 8px;
  background: rgba(23, 27, 41, 0.85);
  border: 1px solid var(--border);
  border-radius: var(--radius-xl);
  padding: 8px 10px;
  transition: var(--transition);
  backdrop-filter: blur(10px);
  box-shadow: var(--shadow-sm);
}
.input-wrapper:focus-within {
  border-color: var(--brand);
  box-shadow: 0 0 0 2px var(--brand-glow), 0 6px 28px rgba(108, 140, 255, 0.15);
  transform: translateY(-1px);
}
.input-wrapper textarea {
  flex: 1;
  background: transparent;
  border: none;
  padding: 8px 6px;
  color: var(--text);
  font-size: 14px;
  font-family: var(--font-sans);
  resize: none;
  outline: none;
  min-height: 26px;
  max-height: 120px;
  line-height: 1.6;
}
.input-wrapper textarea::placeholder { color: var(--text-muted); }

.send-btn {
  width: 40px;
  height: 40px;
  border: none;
  border-radius: var(--radius);
  background: var(--brand-gradient);
  color: #fff;
  cursor: pointer;
  display: flex;
  align-items: center;
  justify-content: center;
  transition: var(--transition);
  flex-shrink: 0;
  box-shadow: 0 3px 14px rgba(108, 140, 255, 0.3);
}
.send-btn:hover { transform: scale(1.06); }
.send-btn:disabled { opacity: 0.35; cursor: not-allowed; transform: none; box-shadow: none; }
.send-btn svg { width: 19px; height: 19px; }

.input-footer {
  max-width: 780px;
  margin: 8px auto 0;
  text-align: center;
  font-size: 11px;
  color: var(--text-muted);
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
}
.input-footer-divider { opacity: 0.5; }

/* ===== Modal ===== */
.modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(5, 6, 10, 0.7);
  backdrop-filter: blur(10px);
  z-index: 100;
  display: none;
  align-items: center;
  justify-content: center;
  animation: fadeUp 0.2s ease;
}
.modal-overlay.open { display: flex; }
.modal {
  background: var(--bg-secondary);
  border: 1px solid var(--border-light);
  border-radius: var(--radius-xl);
  width: 480px;
  max-width: 92vw;
  max-height: 85vh;
  box-shadow: var(--shadow);
  overflow: hidden;
  display: flex;
  flex-direction: column;
  animation: scaleIn 0.25s cubic-bezier(0.34, 1.56, 0.64, 1);
}
@keyframes scaleIn {
  from { opacity: 0; transform: scale(0.94) translateY(10px); }
  to { opacity: 1; transform: scale(1) translateY(0); }
}
.terminal-modal {
  width: 80vw;
  height: 70vh;
}
.modal-header {
  display: flex;
  align-items: center;
  padding: 16px 22px;
  border-bottom: 1px solid var(--border);
  font-size: 14px;
  font-weight: 700;
  gap: 10px;
  background: rgba(23, 27, 41, 0.4);
}
.modal-header-spacer { flex: 1; }
.modal-close-btn {
  background: none;
  border: none;
  color: var(--text-muted);
  font-size: 16px;
  cursor: pointer;
  padding: 4px 10px;
  border-radius: var(--radius-sm);
  transition: var(--transition);
}
.modal-close-btn:hover { background: var(--bg-hover); color: var(--text); }
.modal-body {
  padding: 22px;
  overflow-y: auto;
}

/* ===== Form ===== */
.field { margin-bottom: 18px; }
.field label {
  display: block;
  font-size: 12px;
  color: var(--text-secondary);
  margin-bottom: 7px;
  font-weight: 600;
  letter-spacing: 0.3px;
}
.field input, .field textarea {
  width: 100%;
  background: var(--bg-primary);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 11px 14px;
  color: var(--text);
  font-size: 13px;
  outline: none;
  transition: var(--transition);
  font-family: var(--font-sans);
}
.field input:focus, .field textarea:focus {
  border-color: var(--brand);
  box-shadow: 0 0 0 3px var(--brand-glow);
}
.field input::placeholder { color: var(--text-muted); }
.field-row { display: flex; gap: 14px; }

.btn-primary {
  width: 100%;
  padding: 12px 0;
  border: none;
  border-radius: var(--radius);
  background: var(--brand-gradient);
  color: var(--text-on-brand);
  font-size: 14px;
  font-weight: 600;
  cursor: pointer;
  transition: var(--transition);
  font-family: var(--font-sans);
  box-shadow: 0 4px 18px rgba(108, 140, 255, 0.25);
}
.btn-primary:hover { transform: translateY(-1px); box-shadow: 0 6px 24px rgba(108, 140, 255, 0.35); }
.btn-primary:disabled { opacity: 0.5; cursor: not-allowed; transform: none; }
.btn-primary.danger {
  background: transparent;
  border: 1px solid rgba(240, 97, 109, 0.3);
  color: var(--danger);
  box-shadow: none;
}
.btn-primary.danger:hover { background: rgba(240, 97, 109, 0.1); }

.conn-status {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 13px;
  margin-bottom: 14px;
  animation: msgIn 0.2s ease;
}
.conn-status.success {
  background: rgba(52, 211, 153, 0.1);
  color: var(--success);
  border: 1px solid rgba(52, 211, 153, 0.25);
}
.conn-status.error {
  background: rgba(240, 97, 109, 0.1);
  color: #fca5a5;
  border: 1px solid rgba(240, 97, 109, 0.25);
}

/* ===== Utility ===== */
.hidden { display: none !important; }

/* ===== Responsive ===== */
@media (max-width: 768px) {
  .sidebar { position: fixed; left: 0; top: 0; z-index: 100; box-shadow: var(--shadow); }
  .sidebar.collapsed { margin-left: calc(-1 * var(--sidebar-w)); }
  .menu-btn { display: block; }
  .messages-container { padding: 8px 14px 16px; }
  .input-area { padding: 4px 14px 14px; }
  .msg-content { max-width: 92%; }
  .welcome-suggestions { grid-template-columns: 1fr; }
  .welcome { padding: 60px 16px 40px; }
  .welcome h1 { font-size: 22px; }
  .terminal-view { margin: 8px; }
  .terminal-modal { width: 96vw; height: 80vh; }
  .modal { width: 92vw; }
}
@media (max-width: 480px) {
  .message { padding: 6px 0; }
  .msg-content { font-size: 13px; padding: 10px 13px; }
  .header-conn-status { display: none; }
  .input-footer { font-size: 10px; flex-wrap: wrap; }
}