:root {
  --nc-bg: #0d0f18;
  --nc-bg2: #13161f;
  --nc-bg3: #1a1d2b;
  --nc-bg4: #1f2235;
  --nc-border: #2a2e45;
  --nc-text: #dde3f0;
  --nc-muted: #7b849a;
  --nc-primary: #6366f1;
  --nc-primary-hover: #4f51d6;
  --nc-primary-rgb: 99,102,241;
  --nc-green: #10b981;
  --nc-yellow: #f59e0b;
  --nc-red: #ef4444;
  --nc-blue: #3b82f6;
  --nc-shadow: 0 4px 24px rgba(0,0,0,0.5);
}

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

html, body {
  height: 100%;
  background: var(--nc-bg);
  color: var(--nc-text);
  font-family: -apple-system, BlinkMacSystemFont, 'Segoe UI', Roboto, sans-serif;
  font-size: 14px;
}

#app { display: none; }
#app.d-flex { display: flex !important; }

::-webkit-scrollbar { width: 5px; height: 5px; }
::-webkit-scrollbar-track { background: transparent; }
::-webkit-scrollbar-thumb { background: var(--nc-border); border-radius: 4px; }
::-webkit-scrollbar-thumb:hover { background: #3a3f5c; }

.form-control,
.form-select {
  background-color: var(--nc-bg3) !important;
  border: 1px solid var(--nc-border) !important;
  color: var(--nc-text) !important;
  border-radius: 10px !important;
  padding: 9px 13px !important;
  font-size: 13px !important;
  transition: border-color 0.15s !important;
}
.form-control::placeholder { color: var(--nc-muted) !important; }
.form-control:focus,
.form-select:focus {
  background-color: var(--nc-bg3) !important;
  border-color: var(--nc-primary) !important;
  box-shadow: 0 0 0 3px rgba(var(--nc-primary-rgb), 0.15) !important;
  color: var(--nc-text) !important;
}
.form-control:disabled,
.form-select:disabled {
  background-color: var(--nc-bg4) !important;
  opacity: 0.6;
}
.form-select option { background: var(--nc-bg3); }

textarea.form-control { resize: none; }

.form-check-input {
  background-color: var(--nc-bg3);
  border-color: var(--nc-border);
  cursor: pointer;
}
.form-check-input:checked { background-color: var(--nc-primary); border-color: var(--nc-primary); }
.form-check-input:focus { box-shadow: 0 0 0 3px rgba(var(--nc-primary-rgb), 0.15); border-color: var(--nc-primary); }
.form-check-label { color: var(--nc-text); font-size: 13px; cursor: pointer; }

input[type="color"].form-control { padding: 4px 8px !important; height: 40px; cursor: pointer; }

.btn-nc-primary {
  background: var(--nc-primary);
  color: #fff;
  border: none;
  border-radius: 10px;
  padding: 8px 20px;
  font-size: 13px;
  font-weight: 600;
  cursor: pointer;
  transition: background 0.15s;
  white-space: nowrap;
}
.btn-nc-primary:hover { background: var(--nc-primary-hover); }
.btn-nc-primary:active { transform: scale(0.98); }

.btn-nc-ghost {
  background: var(--nc-bg3);
  color: var(--nc-muted);
  border: 1px solid var(--nc-border);
  border-radius: 8px;
  padding: 6px 14px;
  font-size: 12px;
  cursor: pointer;
  transition: all 0.15s;
  white-space: nowrap;
}
.btn-nc-ghost:hover { background: var(--nc-border); color: var(--nc-text); }
.btn-nc-ghost.danger { color: var(--nc-red); border-color: rgba(239,68,68,0.3); }
.btn-nc-ghost.danger:hover { background: rgba(239,68,68,0.1); }
.btn-nc-ghost.blue { color: var(--nc-blue); border-color: rgba(59,130,246,0.3); }
.btn-nc-ghost.blue:hover { background: rgba(59,130,246,0.1); }

.nc-sidebar {
  width: 220px;
  min-width: 220px;
  background: var(--nc-bg2);
  border-right: 1px solid var(--nc-border);
  display: flex;
  flex-direction: column;
  height: 100vh;
  overflow: hidden;
}

.nc-sidebar-logo {
  display: flex;
  align-items: center;
  gap: 10px;
  padding: 14px 16px;
  border-bottom: 1px solid var(--nc-border);
  flex-shrink: 0;
}
.nc-sidebar-logo .logo-icon {
  width: 36px;
  height: 36px;
  border-radius: 10px;
  background: linear-gradient(135deg, #6366f1, #8b5cf6);
  display: flex;
  align-items: center;
  justify-content: center;
  flex-shrink: 0;
}
.nc-sidebar-logo .logo-text {
  font-weight: 700;
  font-size: 15px;
  color: var(--nc-text);
}

.nc-sidebar-nav {
  flex: 1;
  padding: 10px 8px;
  overflow-y: auto;
}

.sidebar-item {
  display: flex;
  align-items: center;
  gap: 9px;
  width: 100%;
  padding: 9px 12px;
  border-radius: 10px;
  font-size: 13px;
  font-weight: 500;
  color: var(--nc-muted);
  background: none;
  border: none;
  cursor: pointer;
  text-align: left;
  transition: background 0.13s, color 0.13s;
  position: relative;
  margin-bottom: 2px;
}
.sidebar-item:hover { background: var(--nc-bg3); color: var(--nc-text); }
.sidebar-item.active { background: rgba(var(--nc-primary-rgb), 0.14); color: var(--nc-primary); font-weight: 600; }
.sidebar-item svg, .sidebar-item i { width: 16px; height: 16px; flex-shrink: 0; }

.nc-sidebar-user {
  padding: 10px;
  border-top: 1px solid var(--nc-border);
  flex-shrink: 0;
}
.nc-sidebar-user .user-card {
  display: flex;
  align-items: center;
  gap: 9px;
  padding: 8px 10px;
  border-radius: 10px;
  background: var(--nc-bg3);
}
.user-avatar {
  width: 32px;
  height: 32px;
  border-radius: 50%;
  background: rgba(var(--nc-primary-rgb), 0.18);
  color: var(--nc-primary);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 12px;
  font-weight: 700;
  flex-shrink: 0;
}

.nc-main {
  flex: 1;
  overflow: hidden;
  display: flex;
  flex-direction: column;
  background: var(--nc-bg);
  min-width: 0;
}

.nc-page { display: none; }
.nc-page.active { display: flex; flex-direction: column; }
.nc-page.active.block-page { display: block; }

.nc-card {
  background: var(--nc-bg2);
  border: 1px solid var(--nc-border);
  border-radius: 14px;
  box-shadow: var(--nc-shadow);
}

.nc-badge {
  display: inline-flex;
  align-items: center;
  padding: 2px 10px;
  border-radius: 999px;
  font-size: 11px;
  font-weight: 600;
}
.nc-badge-waiting { background: rgba(245,158,11,0.14); color: var(--nc-yellow); }
.nc-badge-active { background: rgba(16,185,129,0.14); color: var(--nc-green); }
.nc-badge-closed { background: rgba(100,116,139,0.12); color: #64748b; }
.nc-badge-green { background: rgba(16,185,129,0.14); color: var(--nc-green); }
.nc-badge-gray { background: rgba(100,116,139,0.12); color: #64748b; }
.nc-badge-red { background: rgba(239,68,68,0.14); color: var(--nc-red); }

.stat-card {
  background: var(--nc-bg2);
  border: 1px solid var(--nc-border);
  border-radius: 14px;
  padding: 20px 22px;
  box-shadow: var(--nc-shadow);
}
.stat-num { font-size: 30px; font-weight: 700; line-height: 1; margin-bottom: 6px; }
.stat-label { font-size: 12px; color: var(--nc-muted); }

.nc-table { width: 100%; border-collapse: collapse; }
.nc-table thead tr { border-bottom: 1px solid var(--nc-border); }
.nc-table thead th { color: var(--nc-muted); font-size: 11px; text-transform: uppercase; letter-spacing: 0.05em; padding: 10px 16px; text-align: left; font-weight: 600; }
.nc-table tbody tr { border-bottom: 1px solid var(--nc-border); transition: background 0.12s; }
.nc-table tbody tr:last-child { border-bottom: none; }
.nc-table tbody tr:hover { background: var(--nc-bg3); }
.nc-table tbody td { padding: 11px 16px; font-size: 13px; color: var(--nc-text); }

.conv-item {
  padding: 13px 16px;
  border-bottom: 1px solid var(--nc-border);
  cursor: pointer;
  transition: background 0.12s;
}
.conv-item:hover { background: var(--nc-bg3); }
.conv-item.active-conv { background: rgba(var(--nc-primary-rgb), 0.10); border-left: 3px solid var(--nc-primary); }

.filter-btn {
  border-radius: 20px;
  padding: 5px 14px;
  font-size: 12px;
  font-weight: 500;
  cursor: pointer;
  border: 1px solid transparent;
  transition: all 0.15s;
  background: var(--nc-bg3);
  color: var(--nc-muted);
  border-color: var(--nc-border);
}
.filter-btn.active { background: rgba(var(--nc-primary-rgb), 0.14); color: var(--nc-primary); border-color: var(--nc-primary); }
.filter-btn:not(.active):hover { background: var(--nc-border); color: var(--nc-text); }

.msg-wrap {
  max-width: 75%;
  padding: 10px 14px;
  font-size: 13px;
  line-height: 1.55;
  word-break: break-word;
  border-radius: 14px;
}
.msg-visitor { background: var(--nc-primary); color: #fff; border-radius: 14px 14px 4px 14px; align-self: flex-end; margin-left: auto; }
.msg-agent { background: var(--nc-bg3); color: var(--nc-text); border-radius: 14px 14px 14px 4px; align-self: flex-start; border: 1px solid var(--nc-border); }
.msg-ai { background: rgba(16,185,129,0.1); color: #34d399; border-radius: 14px 14px 14px 4px; align-self: flex-start; border: 1px solid rgba(16,185,129,0.2); }
.msg-system { background: var(--nc-bg3); color: var(--nc-muted); border-radius: 8px; text-align: center; font-size: 11px; align-self: center; max-width: 80%; padding: 6px 14px; border: 1px solid var(--nc-border); }
.msg-time { font-size: 10px; opacity: 0.45; margin-top: 4px; display: block; }
.msg-label { font-size: 10px; font-weight: 600; margin-bottom: 3px; display: block; opacity: 0.65; }

.nc-modal-overlay {
  position: fixed;
  inset: 0;
  background: rgba(0,0,0,0.75);
  z-index: 1050;
  display: none;
  align-items: center;
  justify-content: center;
  padding: 16px;
}
.nc-modal-overlay.show { display: flex; }
.nc-modal-box {
  background: var(--nc-bg2);
  border: 1px solid var(--nc-border);
  border-radius: 18px;
  width: 100%;
  max-width: 480px;
  max-height: 90vh;
  overflow-y: auto;
  padding: 28px;
  color: var(--nc-text);
  box-shadow: var(--nc-shadow);
}

.waiting-dot {
  width: 20px;
  height: 20px;
  border-radius: 50%;
  background: var(--nc-red);
  color: #fff;
  font-size: 10px;
  font-weight: 700;
  display: none;
  align-items: center;
  justify-content: center;
}

.login-screen {
  min-height: 100vh;
  background: var(--nc-bg);
  display: flex;
  align-items: center;
  justify-content: center;
  position: relative;
  overflow: hidden;
}

.login-bg-orb {
  position: absolute;
  border-radius: 50%;
  filter: blur(80px);
  pointer-events: none;
  z-index: 0;
}
.orb1 {
  width: 420px;
  height: 420px;
  background: rgba(99,102,241,0.18);
  top: -120px;
  right: -80px;
}
.orb2 {
  width: 320px;
  height: 320px;
  background: rgba(139,92,246,0.12);
  bottom: -80px;
  left: -60px;
}

.login-wrap {
  position: relative;
  z-index: 1;
  width: 100%;
  max-width: 400px;
  margin: 0 16px;
  background: var(--nc-bg2);
  border: 1px solid var(--nc-border);
  border-radius: 24px;
  padding: 40px 36px 36px;
  box-shadow: 0 24px 64px rgba(0,0,0,0.6), 0 0 0 1px rgba(255,255,255,0.04);
}

.login-logo {
  display: flex;
  align-items: center;
  gap: 14px;
  margin-bottom: 36px;
}
.login-logo-icon {
  width: 52px;
  height: 52px;
  border-radius: 16px;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  display: flex;
  align-items: center;
  justify-content: center;
  font-size: 22px;
  color: #fff;
  flex-shrink: 0;
  box-shadow: 0 8px 24px rgba(99,102,241,0.4);
}
.login-logo-title {
  font-size: 22px;
  font-weight: 800;
  color: var(--nc-text);
  letter-spacing: -0.3px;
}
.login-logo-sub {
  font-size: 12px;
  color: var(--nc-muted);
  margin-top: 1px;
}

.login-form {
  display: flex;
  flex-direction: column;
  gap: 14px;
}

.login-field {
  position: relative;
  display: flex;
  align-items: center;
}
.login-field-icon {
  position: absolute;
  left: 14px;
  color: var(--nc-muted);
  font-size: 15px;
  pointer-events: none;
  z-index: 1;
}
.login-input {
  width: 100%;
  background: var(--nc-bg3);
  border: 1px solid var(--nc-border);
  border-radius: 12px;
  padding: 12px 14px 12px 42px;
  font-size: 14px;
  color: var(--nc-text);
  outline: none;
  transition: border-color 0.2s, box-shadow 0.2s;
}
.login-input::placeholder { color: var(--nc-muted); }
.login-input:focus {
  border-color: var(--nc-primary);
  box-shadow: 0 0 0 3px rgba(99,102,241,0.18);
}

.otp-input {
  text-align: center;
  font-size: 26px;
  letter-spacing: 12px;
  padding-left: 14px;
  font-weight: 700;
}

.login-pw-toggle {
  position: absolute;
  right: 12px;
  background: none;
  border: none;
  cursor: pointer;
  color: var(--nc-muted);
  font-size: 16px;
  display: flex;
  align-items: center;
  padding: 4px;
  border-radius: 6px;
  transition: color 0.15s;
}
.login-pw-toggle:hover { color: var(--nc-text); }

.login-btn {
  display: flex;
  align-items: center;
  justify-content: center;
  gap: 8px;
  background: linear-gradient(135deg, #6366f1 0%, #8b5cf6 100%);
  color: #fff;
  border: none;
  border-radius: 12px;
  padding: 13px 20px;
  font-size: 15px;
  font-weight: 700;
  cursor: pointer;
  transition: opacity 0.15s, transform 0.15s;
  box-shadow: 0 8px 20px rgba(99,102,241,0.35);
  margin-top: 4px;
}
.login-btn:hover { opacity: 0.92; transform: translateY(-1px); }
.login-btn:active { transform: translateY(0); opacity: 1; }

.login-err {
  text-align: center;
  font-size: 12px;
  color: var(--nc-red);
  background: rgba(239,68,68,0.08);
  border: 1px solid rgba(239,68,68,0.2);
  border-radius: 8px;
  padding: 8px 12px;
  margin: 0;
}

.otp-info {
  text-align: center;
  padding: 16px 0 4px;
}