/* ─────────────────────────────────────────────────────────────────────────────
   RVH-CHAT · STYLESHEET
   Aesthetic: Terminal · Hacker · Brutalist Minimal
   ───────────────────────────────────────────────────────────────────────────── */

@import url('https://fonts.googleapis.com/css2?family=JetBrains+Mono:ital,wght@0,300;0,400;0,500;0,700;1,400&display=swap');

:root {
  --bg:          #0a0a0a;
  --bg2:         #0d1117;
  --bg3:         #161b22;
  --border:      #1a2a1a;
  --border2:     #21262d;
  --green:       #00ff88;
  --green-dim:   #00aa55;
  --green-glow:  rgba(0,255,136,.12);
  --red:         #ff4444;
  --yellow:      #ffd60a;
  --blue:        #58a6ff;
  --text:        #e6edf3;
  --text-dim:    #8b949e;
  --text-muted:  #484f58;
  --font:        'JetBrains Mono', 'Courier New', monospace;
  --radius:      2px;
  --transition:  140ms ease;
}

*, *::before, *::after { box-sizing: border-box; margin: 0; padding: 0; }

html { font-size: 14px; scroll-behavior: smooth; }

body {
  background: var(--bg);
  color: var(--text);
  font-family: var(--font);
  line-height: 1.6;
  min-height: 100vh;
  overflow-x: hidden;
}

/* ── Scrollbar ──────────────────────────────────────────────────────────────── */
::-webkit-scrollbar { width: 4px; height: 4px; }
::-webkit-scrollbar-track { background: var(--bg2); }
::-webkit-scrollbar-thumb { background: var(--green-dim); border-radius: 2px; }
::-webkit-scrollbar-thumb:hover { background: var(--green); }

/* ── Links ──────────────────────────────────────────────────────────────────── */
a { color: var(--green); text-decoration: none; transition: color var(--transition); }
a:hover { color: var(--text); }

/* ── Selection ──────────────────────────────────────────────────────────────── */
::selection { background: var(--green); color: var(--bg); }

/* ═══════════════════════════════════════════════════════════════════════════════
   LAYOUT
   ═══════════════════════════════════════════════════════════════════════════════ */

.app-layout {
  display: grid;
  grid-template-columns: 260px 1fr;
  grid-template-rows: 48px 1fr;
  height: 100vh;
  overflow: hidden;
}

/* ── Topbar ─────────────────────────────────────────────────────────────────── */
.topbar {
  grid-column: 1 / -1;
  display: flex;
  align-items: center;
  justify-content: space-between;
  padding: 0 20px;
  background: var(--bg2);
  border-bottom: 1px solid var(--border);
  z-index: 100;
}

.topbar-logo {
  color: var(--green);
  font-size: 15px;
  font-weight: 700;
  letter-spacing: 2px;
}

.topbar-logo span { color: var(--text-muted); }

.topbar-right {
  display: flex;
  align-items: center;
  gap: 20px;
}

.topbar-user {
  color: var(--text-dim);
  font-size: 12px;
}

.topbar-user strong { color: var(--green); }

/* ── Sidebar ────────────────────────────────────────────────────────────────── */
.sidebar {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  display: flex;
  flex-direction: column;
  overflow: hidden;
}

.sidebar-header {
  padding: 16px;
  border-bottom: 1px solid var(--border);
  flex-shrink: 0;
}

.sidebar-section {
  padding: 12px 16px 4px;
  font-size: 10px;
  color: var(--text-muted);
  letter-spacing: 2px;
  text-transform: uppercase;
}

.sidebar-list {
  flex: 1;
  overflow-y: auto;
  padding: 4px 8px;
}

.conv-item {
  display: flex;
  align-items: center;
  gap: 8px;
  padding: 8px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  transition: background var(--transition);
  border: 1px solid transparent;
  position: relative;
  group: true;
}

.conv-item:hover { background: var(--bg3); border-color: var(--border); }
.conv-item.active { background: var(--green-glow); border-color: var(--border); }
.conv-item.active .conv-title { color: var(--green); }

.conv-prefix { color: var(--green-dim); font-size: 11px; flex-shrink: 0; }
.conv-title { font-size: 12px; color: var(--text-dim); overflow: hidden; text-overflow: ellipsis; white-space: nowrap; flex: 1; }
.conv-delete { opacity: 0; color: var(--text-muted); cursor: pointer; font-size: 14px; padding: 2px 4px; flex-shrink: 0; transition: opacity var(--transition), color var(--transition); }
.conv-item:hover .conv-delete { opacity: 1; }
.conv-delete:hover { color: var(--red); }

.sidebar-footer {
  padding: 12px 16px;
  border-top: 1px solid var(--border);
  flex-shrink: 0;
}

/* ── Main Chat Area ─────────────────────────────────────────────────────────── */
.chat-main {
  display: flex;
  flex-direction: column;
  overflow: hidden;
  background: var(--bg);
}

.chat-messages {
  flex: 1;
  overflow-y: auto;
  padding: 24px 0;
  display: flex;
  flex-direction: column;
  gap: 0;
}

.chat-empty {
  flex: 1;
  display: flex;
  flex-direction: column;
  align-items: center;
  justify-content: center;
  color: var(--text-muted);
  gap: 8px;
  text-align: center;
  padding: 40px;
}

.chat-empty-logo { font-size: 32px; color: var(--green); letter-spacing: 3px; font-weight: 700; }
.chat-empty-sub  { font-size: 12px; color: var(--text-muted); }

/* ── Message ────────────────────────────────────────────────────────────────── */
.message {
  display: flex;
  gap: 16px;
  padding: 16px 24px;
  transition: background var(--transition);
}

.message:hover { background: rgba(255,255,255,.01); }

.message.assistant { background: rgba(0,255,136,.02); }

.msg-avatar {
  width: 28px;
  height: 28px;
  border-radius: var(--radius);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 11px;
  font-weight: 700;
  flex-shrink: 0;
  letter-spacing: 0;
  border: 1px solid;
  margin-top: 2px;
}

.message.user     .msg-avatar { background: var(--bg3); border-color: var(--border2); color: var(--text-dim); }
.message.assistant .msg-avatar { background: var(--green-glow); border-color: var(--green-dim); color: var(--green); }

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

.msg-header {
  display: flex;
  align-items: center;
  gap: 10px;
  margin-bottom: 6px;
}

.msg-name  { font-size: 12px; font-weight: 700; color: var(--text); }
.msg-time  { font-size: 11px; color: var(--text-muted); }
.msg-model { font-size: 10px; color: var(--text-muted); background: var(--bg3); border: 1px solid var(--border); padding: 1px 6px; border-radius: 2px; }

.msg-body { font-size: 13.5px; color: var(--text); line-height: 1.7; }
.msg-body.streaming::after { content: '▊'; color: var(--green); animation: blink .7s step-end infinite; }

/* ── Markdown Rendering ─────────────────────────────────────────────────────── */
.msg-body h1,.msg-body h2,.msg-body h3,.msg-body h4 {
  color: var(--text);
  margin: 20px 0 8px;
  font-weight: 700;
  border-bottom: 1px solid var(--border);
  padding-bottom: 6px;
}
.msg-body h1 { font-size: 18px; }
.msg-body h2 { font-size: 16px; }
.msg-body h3 { font-size: 14px; border: none; }
.msg-body h4 { font-size: 13px; border: none; color: var(--green); }
.msg-body p  { margin-bottom: 12px; }
.msg-body ul,.msg-body ol { margin: 8px 0 12px 20px; }
.msg-body li { margin-bottom: 4px; }
.msg-body blockquote {
  border-left: 3px solid var(--green-dim);
  padding-left: 12px;
  color: var(--text-dim);
  margin: 12px 0;
}
.msg-body code {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--green);
  padding: 1px 5px;
  border-radius: 2px;
  font-size: 12.5px;
  font-family: var(--font);
}
.msg-body pre {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 16px;
  overflow-x: auto;
  margin: 12px 0;
  position: relative;
}
.msg-body pre code {
  background: none;
  border: none;
  padding: 0;
  color: var(--text);
  font-size: 13px;
}
.msg-body table {
  width: 100%;
  border-collapse: collapse;
  margin: 12px 0;
  font-size: 13px;
}
.msg-body th { background: var(--bg3); color: var(--green); padding: 8px 12px; border: 1px solid var(--border); text-align: left; }
.msg-body td { padding: 7px 12px; border: 1px solid var(--border); color: var(--text-dim); }
.msg-body tr:hover td { background: rgba(0,255,136,.03); }
.msg-body a { color: var(--blue); }
.msg-body a:hover { color: var(--text); }
.msg-body strong { color: var(--text); font-weight: 700; }
.msg-body em { color: var(--text-dim); }
.msg-body hr { border: none; border-top: 1px solid var(--border); margin: 16px 0; }

/* Code copy button */
.code-block-wrap { position: relative; }
.copy-btn {
  position: absolute;
  top: 8px;
  right: 8px;
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text-muted);
  font-size: 11px;
  font-family: var(--font);
  padding: 3px 8px;
  cursor: pointer;
  border-radius: var(--radius);
  transition: all var(--transition);
  letter-spacing: .5px;
}
.copy-btn:hover { background: var(--green-glow); border-color: var(--green-dim); color: var(--green); }

/* ── Input Bar ──────────────────────────────────────────────────────────────── */
.chat-input-area {
  padding: 16px 24px 20px;
  border-top: 1px solid var(--border);
  background: var(--bg);
  flex-shrink: 0;
}

.chat-input-wrap {
  display: flex;
  gap: 10px;
  align-items: flex-end;
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  padding: 10px 14px;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.chat-input-wrap:focus-within {
  border-color: var(--green-dim);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.chat-input-prefix { color: var(--green-dim); font-size: 13px; flex-shrink: 0; padding-bottom: 2px; user-select: none; }

#message-input {
  flex: 1;
  background: none;
  border: none;
  outline: none;
  color: var(--text);
  font-family: var(--font);
  font-size: 13.5px;
  resize: none;
  min-height: 22px;
  max-height: 180px;
  line-height: 1.5;
}

#message-input::placeholder { color: var(--text-muted); }

.send-btn {
  background: var(--green);
  color: var(--bg);
  border: none;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 700;
  padding: 6px 14px;
  cursor: pointer;
  border-radius: var(--radius);
  letter-spacing: 1px;
  transition: all var(--transition);
  flex-shrink: 0;
  align-self: flex-end;
}

.send-btn:hover:not(:disabled) { background: var(--text); }
.send-btn:disabled { background: var(--bg3); color: var(--text-muted); cursor: not-allowed; }

.input-meta {
  display: flex;
  align-items: center;
  justify-content: space-between;
  margin-top: 6px;
  font-size: 11px;
  color: var(--text-muted);
}

.model-select {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text-dim);
  font-family: var(--font);
  font-size: 11px;
  padding: 3px 8px;
  border-radius: var(--radius);
  cursor: pointer;
  outline: none;
  transition: border-color var(--transition);
}

.model-select:focus { border-color: var(--green-dim); }

/* ═══════════════════════════════════════════════════════════════════════════════
   AUTH PAGES
   ═══════════════════════════════════════════════════════════════════════════════ */

.auth-layout {
  min-height: 100vh;
  display: flex;
  align-items: center;
  justify-content: center;
  padding: 40px 20px;
  background: var(--bg);
  background-image:
    repeating-linear-gradient(0deg, transparent, transparent 39px, var(--border) 39px, var(--border) 40px),
    repeating-linear-gradient(90deg, transparent, transparent 39px, var(--border) 39px, var(--border) 40px);
  background-size: 40px 40px;
  background-color: var(--bg);
}

.auth-card {
  width: 100%;
  max-width: 420px;
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 40px;
  animation: fadeUp .3s ease;
}

@keyframes fadeUp {
  from { opacity: 0; transform: translateY(16px); }
  to   { opacity: 1; transform: translateY(0); }
}

.auth-logo {
  font-size: 20px;
  font-weight: 700;
  color: var(--green);
  letter-spacing: 3px;
  margin-bottom: 8px;
}

.auth-subtitle { font-size: 12px; color: var(--text-muted); margin-bottom: 32px; }

/* ═══════════════════════════════════════════════════════════════════════════════
   FORM ELEMENTS
   ═══════════════════════════════════════════════════════════════════════════════ */

.form-group { margin-bottom: 18px; }

.form-label {
  display: block;
  font-size: 11px;
  color: var(--text-muted);
  letter-spacing: 1.5px;
  text-transform: uppercase;
  margin-bottom: 6px;
}

.form-label .req { color: var(--green); }

.form-input, .form-select, .form-textarea {
  width: 100%;
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--font);
  font-size: 13px;
  padding: 10px 12px;
  border-radius: var(--radius);
  outline: none;
  transition: border-color var(--transition), box-shadow var(--transition);
}

.form-input:focus, .form-select:focus, .form-textarea:focus {
  border-color: var(--green-dim);
  box-shadow: 0 0 0 3px var(--green-glow);
}

.form-input::placeholder { color: var(--text-muted); }
.form-textarea { resize: vertical; min-height: 100px; line-height: 1.5; }
.form-select { cursor: pointer; }
.form-select option { background: var(--bg2); }

.form-hint { font-size: 11px; color: var(--text-muted); margin-top: 4px; }

.form-row { display: grid; grid-template-columns: 1fr 1fr; gap: 16px; }

/* ── Buttons ────────────────────────────────────────────────────────────────── */
.btn {
  display: inline-flex;
  align-items: center;
  justify-content: center;
  gap: 6px;
  font-family: var(--font);
  font-size: 12px;
  font-weight: 700;
  letter-spacing: 1px;
  padding: 10px 20px;
  border-radius: var(--radius);
  border: 1px solid transparent;
  cursor: pointer;
  transition: all var(--transition);
  text-decoration: none;
  white-space: nowrap;
}

.btn-primary   { background: var(--green); color: var(--bg); border-color: var(--green); }
.btn-primary:hover   { background: #00e07a; color: var(--bg); }
.btn-secondary { background: transparent; color: var(--text-dim); border-color: var(--border2); }
.btn-secondary:hover { background: var(--bg3); border-color: var(--green-dim); color: var(--text); }
.btn-danger    { background: transparent; color: var(--red); border-color: rgba(255,68,68,.3); }
.btn-danger:hover    { background: rgba(255,68,68,.1); border-color: var(--red); }
.btn-sm  { padding: 5px 12px; font-size: 11px; }
.btn-full{ width: 100%; }

/* ── Alerts ─────────────────────────────────────────────────────────────────── */
.alert {
  padding: 10px 14px;
  border-radius: var(--radius);
  font-size: 12px;
  border-left: 3px solid;
  margin-bottom: 18px;
}

.alert-error   { background: rgba(255,68,68,.08);   border-color: var(--red);    color: var(--red); }
.alert-success { background: rgba(0,255,136,.08);   border-color: var(--green);  color: var(--green); }
.alert-info    { background: rgba(88,166,255,.08);  border-color: var(--blue);   color: var(--blue); }
.alert-warn    { background: rgba(255,214,10,.08);  border-color: var(--yellow); color: var(--yellow); }

/* ═══════════════════════════════════════════════════════════════════════════════
   ADMIN LAYOUT
   ═══════════════════════════════════════════════════════════════════════════════ */

.admin-layout { display: grid; grid-template-columns: 220px 1fr; min-height: 100vh; }

.admin-nav {
  background: var(--bg2);
  border-right: 1px solid var(--border);
  padding: 0;
  display: flex;
  flex-direction: column;
}

.admin-nav-logo {
  padding: 24px 20px 16px;
  border-bottom: 1px solid var(--border);
  color: var(--green);
  font-size: 14px;
  font-weight: 700;
  letter-spacing: 2px;
}

.admin-nav-logo small { display: block; color: var(--text-muted); font-size: 10px; font-weight: 400; margin-top: 2px; letter-spacing: 1px; }

.admin-nav-section { padding: 16px 20px 6px; font-size: 10px; color: var(--text-muted); letter-spacing: 2px; text-transform: uppercase; }

.admin-nav-link {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 9px 20px;
  color: var(--text-dim);
  font-size: 13px;
  transition: all var(--transition);
  border-left: 2px solid transparent;
}

.admin-nav-link:hover  { background: var(--bg3); color: var(--text); }
.admin-nav-link.active { background: var(--green-glow); color: var(--green); border-left-color: var(--green); }
.admin-nav-link .icon  { font-size: 14px; }

.admin-main { overflow-y: auto; background: var(--bg); }

.admin-header {
  padding: 24px 32px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
}

.admin-title { font-size: 18px; font-weight: 700; color: var(--text); }
.admin-title span { color: var(--green); }

.admin-content { padding: 32px; }

/* ── Stats Grid ─────────────────────────────────────────────────────────────── */
.stats-grid { display: grid; grid-template-columns: repeat(auto-fit, minmax(180px, 1fr)); gap: 16px; margin-bottom: 32px; }

.stat-card {
  background: var(--bg2);
  border: 1px solid var(--border);
  padding: 20px;
  border-radius: var(--radius);
  transition: border-color var(--transition);
}
.stat-card:hover { border-color: var(--green-dim); }
.stat-value { font-size: 32px; font-weight: 700; color: var(--green); line-height: 1; }
.stat-label { font-size: 11px; color: var(--text-muted); margin-top: 4px; letter-spacing: 1px; text-transform: uppercase; }

/* ── Table ──────────────────────────────────────────────────────────────────── */
.data-table-wrap { background: var(--bg2); border: 1px solid var(--border); border-radius: var(--radius); overflow: hidden; }

.data-table-header {
  padding: 16px 20px;
  border-bottom: 1px solid var(--border);
  display: flex;
  align-items: center;
  justify-content: space-between;
  gap: 12px;
}

.data-table-title { font-size: 13px; font-weight: 700; color: var(--text); }

.data-table { width: 100%; border-collapse: collapse; }
.data-table th { padding: 10px 16px; text-align: left; font-size: 11px; color: var(--text-muted); letter-spacing: 1.5px; text-transform: uppercase; border-bottom: 1px solid var(--border); background: var(--bg3); }
.data-table td { padding: 11px 16px; font-size: 12.5px; border-bottom: 1px solid var(--border); vertical-align: middle; }
.data-table tr:last-child td { border-bottom: none; }
.data-table tr:hover td { background: rgba(0,255,136,.02); }

/* ── Badges ─────────────────────────────────────────────────────────────────── */
.badge {
  display: inline-block;
  padding: 2px 8px;
  font-size: 10px;
  font-weight: 700;
  letter-spacing: .5px;
  border-radius: 2px;
  border: 1px solid;
}
.badge-green  { background: rgba(0,255,136,.1);  color: var(--green);  border-color: rgba(0,255,136,.3); }
.badge-red    { background: rgba(255,68,68,.1);  color: var(--red);    border-color: rgba(255,68,68,.3); }
.badge-yellow { background: rgba(255,214,10,.1); color: var(--yellow); border-color: rgba(255,214,10,.3); }
.badge-blue   { background: rgba(88,166,255,.1); color: var(--blue);   border-color: rgba(88,166,255,.3); }
.badge-gray   { background: var(--bg3);          color: var(--text-muted); border-color: var(--border2); }

/* ── Card ───────────────────────────────────────────────────────────────────── */
.card {
  background: var(--bg2);
  border: 1px solid var(--border);
  border-radius: var(--radius);
  margin-bottom: 24px;
}
.card-header { padding: 16px 20px; border-bottom: 1px solid var(--border); }
.card-title  { font-size: 13px; font-weight: 700; color: var(--text); }
.card-subtitle { font-size: 11px; color: var(--text-muted); margin-top: 2px; }
.card-body   { padding: 20px; }

/* ── Search input ───────────────────────────────────────────────────────────── */
.search-input {
  background: var(--bg3);
  border: 1px solid var(--border2);
  color: var(--text);
  font-family: var(--font);
  font-size: 12px;
  padding: 7px 12px;
  border-radius: var(--radius);
  outline: none;
  width: 220px;
  transition: border-color var(--transition);
}
.search-input:focus { border-color: var(--green-dim); }
.search-input::placeholder { color: var(--text-muted); }

/* ── Toggle ─────────────────────────────────────────────────────────────────── */
.toggle-wrap { display: flex; align-items: center; gap: 10px; }
.toggle { position: relative; width: 36px; height: 20px; flex-shrink: 0; }
.toggle input { opacity: 0; width: 0; height: 0; }
.toggle-slider {
  position: absolute; inset: 0;
  background: var(--bg3); border: 1px solid var(--border2);
  border-radius: 10px; cursor: pointer;
  transition: all var(--transition);
}
.toggle-slider::before {
  content: ''; position: absolute;
  width: 14px; height: 14px;
  left: 2px; top: 2px;
  background: var(--text-muted); border-radius: 50%;
  transition: all var(--transition);
}
.toggle input:checked + .toggle-slider { background: var(--green-glow); border-color: var(--green-dim); }
.toggle input:checked + .toggle-slider::before { transform: translateX(16px); background: var(--green); }

/* ── Modal ──────────────────────────────────────────────────────────────────── */
.modal-backdrop {
  position: fixed; inset: 0;
  background: rgba(0,0,0,.75);
  backdrop-filter: blur(4px);
  z-index: 1000;
  display: flex; align-items: center; justify-content: center; padding: 20px;
  animation: fadeIn .15s ease;
}
@keyframes fadeIn { from { opacity: 0; } to { opacity: 1; } }

.modal {
  background: var(--bg2);
  border: 1px solid var(--border);
  width: 100%; max-width: 520px;
  max-height: 90vh;
  overflow-y: auto;
  animation: modalIn .2s ease;
}
@keyframes modalIn { from { opacity: 0; transform: scale(.96); } to { opacity: 1; transform: scale(1); } }

.modal-header { padding: 20px 24px; border-bottom: 1px solid var(--border); display: flex; align-items: center; justify-content: space-between; }
.modal-title  { font-size: 14px; font-weight: 700; color: var(--text); }
.modal-close  { background: none; border: none; color: var(--text-muted); font-size: 18px; cursor: pointer; padding: 4px; line-height: 1; transition: color var(--transition); }
.modal-close:hover { color: var(--red); }
.modal-body   { padding: 24px; }
.modal-footer { padding: 16px 24px; border-top: 1px solid var(--border); display: flex; justify-content: flex-end; gap: 8px; }

/* ── Animations ─────────────────────────────────────────────────────────────── */
@keyframes blink { 50% { opacity: 0; } }
@keyframes spin   { to { transform: rotate(360deg); } }
.spinner { display: inline-block; width: 14px; height: 14px; border: 2px solid var(--border); border-top-color: var(--green); border-radius: 50%; animation: spin .6s linear infinite; }

/* ── Responsive ─────────────────────────────────────────────────────────────── */
@media (max-width: 768px) {
  .app-layout { grid-template-columns: 1fr; grid-template-rows: 48px auto 1fr; }
  .sidebar { display: none; }
  .sidebar.open { display: flex; position: fixed; inset: 48px 0 0 0; z-index: 200; width: 280px; }
  .admin-layout { grid-template-columns: 1fr; }
  .admin-nav { display: none; }
  .form-row { grid-template-columns: 1fr; }
}

/* ── Utility ────────────────────────────────────────────────────────────────── */
.text-green   { color: var(--green); }
.text-red     { color: var(--red); }
.text-muted   { color: var(--text-muted); }
.text-dim     { color: var(--text-dim); }
.text-right   { text-align: right; }
.text-center  { text-align: center; }
.mt-0 { margin-top: 0; }
.mt-1 { margin-top: 8px; }
.mt-2 { margin-top: 16px; }
.mt-3 { margin-top: 24px; }
.mb-0 { margin-bottom: 0; }
.mb-1 { margin-bottom: 8px; }
.mb-2 { margin-bottom: 16px; }
.d-flex { display: flex; }
.align-center { align-items: center; }
.gap-1 { gap: 8px; }
.gap-2 { gap: 16px; }
.flex-1 { flex: 1; }
.hidden { display: none !important; }

/* ── Toast notifications ────────────────────────────────────────────────────── */
#toast-container {
  position: fixed; bottom: 24px; right: 24px;
  z-index: 9999; display: flex; flex-direction: column; gap: 8px; pointer-events: none;
}
.toast {
  background: var(--bg2); border: 1px solid var(--border);
  padding: 10px 16px; font-size: 12px; color: var(--text);
  border-radius: var(--radius); pointer-events: auto;
  animation: toastIn .2s ease;
  border-left: 3px solid var(--green);
  max-width: 300px;
}
.toast.error { border-left-color: var(--red); }
.toast.warn  { border-left-color: var(--yellow); }
@keyframes toastIn { from { opacity: 0; transform: translateX(20px); } to { opacity: 1; transform: translateX(0); } }

/* ── Markdown extras ─────────────────────────────────────────────────────── */
.table-wrap { overflow-x: auto; margin: 12px 0; }
.msg-body table { border-collapse: collapse; width: 100%; font-size: 13px; }
.msg-body th, .msg-body td { border: 1px solid var(--border2); padding: 8px 12px; text-align: left; }
.msg-body th { background: var(--bg3); color: var(--green); font-weight: 600; }
.msg-body tr:nth-child(even) { background: rgba(255,255,255,0.02); }
.msg-body .task-item { list-style: none; }
.msg-body .task-item input { margin-right: 6px; accent-color: var(--green); }
.code-block-header { display: flex; justify-content: space-between; align-items: center; padding: 6px 12px; background: var(--bg3); border-bottom: 1px solid var(--border2); }
.code-lang { font-size: 11px; color: var(--text-muted); text-transform: uppercase; }

.table-wrap { overflow-x:auto; margin:12px 0; }
.msg-body table { border-collapse:collapse; width:100%; font-size:13px; }
.msg-body th, .msg-body td { border:1px solid var(--border2); padding:8px 12px; }
.msg-body th { background:var(--bg3); color:var(--green); font-weight:600; }
.msg-body tr:nth-child(even) { background:rgba(255,255,255,0.02); }
.msg-body .task { list-style:none; margin-left:-20px; }
.msg-body .task input { margin-right:6px; accent-color:var(--green); }
.code-block-header { display:flex; justify-content:space-between; align-items:center; padding:6px 12px; background:rgba(0,0,0,0.3); border-bottom:1px solid var(--border2); border-radius:4px 4px 0 0; }
.code-lang { font-size:11px; color:var(--text-muted); text-transform:uppercase; letter-spacing:.05em; }