* { box-sizing: border-box; margin: 0; padding: 0; }
body { font-family: system-ui, sans-serif; display: flex; min-height: 100vh; background: #f5f7fa; color: #222; }

/* Sidebar */
.sidebar { width: 200px; background: #1a1a2e; color: #ccc; display: flex; flex-direction: column; padding: 0; flex-shrink: 0; }
.sidebar-brand { padding: 20px 16px; font-size: 18px; font-weight: 700; color: #fff; border-bottom: 1px solid #333; }
.nav-list { list-style: none; padding: 8px 0; }
.nav-list li a { display: block; padding: 10px 20px; color: #aaa; text-decoration: none; font-size: 14px; transition: background .15s; }
.nav-list li a:hover, .nav-list li a.active { background: #16213e; color: #fff; }

/* Content */
.content { flex: 1; padding: 28px 32px; overflow: auto; }
h1 { font-size: 22px; margin-bottom: 20px; color: #1a1a2e; }
h2 { font-size: 16px; margin: 24px 0 12px; color: #333; }

/* Table */
table { width: 100%; border-collapse: collapse; background: #fff; border-radius: 8px; overflow: hidden; box-shadow: 0 1px 4px rgba(0,0,0,.07); }
thead tr { background: #f0f2f5; }
th { padding: 10px 14px; text-align: left; font-size: 12px; text-transform: uppercase; letter-spacing: .5px; color: #666; }
td { padding: 10px 14px; font-size: 14px; border-top: 1px solid #f0f0f0; }
tr:hover td { background: #fafbfc; }
.empty { color: #aaa; text-align: center; padding: 28px; }

/* Badges */
.badge { padding: 2px 10px; border-radius: 12px; font-size: 11px; font-weight: 600; text-transform: uppercase; }
.badge-telegram   { background: #e8f4fd; color: #0088cc; }
.badge-whatsapp   { background: #e8f9ef; color: #25D366; }
.badge-webchat    { background: #f0eeff; color: #6c5ce7; }
.badge-active     { background: #e8f9ef; color: #27ae60; }
.badge-inactive   { background: #fef0f0; color: #e74c3c; }
.badge-status-new         { background: #e8f4fd; color: #0088cc; }
.badge-status-contacted   { background: #fff3cd; color: #856404; }
.badge-status-negotiating { background: #e8f9ef; color: #27ae60; }
.badge-status-closed      { background: #f0eeff; color: #6c5ce7; }
.badge-status-inactive    { background: #f0f0f0; color: #999; }
.badge-status-confirmed   { background: #e8f9ef; color: #27ae60; }
.badge-status-pending     { background: #fff3cd; color: #856404; }
.badge-status-cancelled   { background: #fef0f0; color: #e74c3c; }
.badge-status-draft       { background: #f0f0f0; color: #666; }
.badge-status-sent        { background: #e8f4fd; color: #0088cc; }
.badge-status-paid        { background: #e8f9ef; color: #27ae60; }

/* Buttons */
.btn { display: inline-block; padding: 7px 16px; border-radius: 6px; font-size: 13px; font-weight: 500; background: #1a1a2e; color: #fff; text-decoration: none; border: none; cursor: pointer; transition: opacity .15s; }
.btn:hover { opacity: .85; }
.btn-sm { padding: 4px 10px; font-size: 12px; }
.btn-warn { background: #e74c3c; }
.btn-outline { background: transparent; border: 1px solid #1a1a2e; color: #1a1a2e; }
.btn-outline:hover { background: #1a1a2e; color: #fff; }

/* Card */
.card { background: #fff; border-radius: 8px; padding: 20px; box-shadow: 0 1px 4px rgba(0,0,0,.07); margin-bottom: 20px; }
.form-row { display: flex; align-items: center; margin-bottom: 12px; gap: 16px; }
.form-row label { width: 80px; font-size: 13px; color: #666; flex-shrink: 0; }
.form-row input, .form-row select { flex: 1; padding: 7px 10px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; }

/* Toolbar */
.toolbar { margin-bottom: 16px; }
.toolbar input { padding: 8px 12px; border: 1px solid #ddd; border-radius: 6px; font-size: 14px; width: 280px; }

/* JSON pre */
pre.json { background: #f5f7fa; border: 1px solid #e5e7eb; border-radius: 6px; padding: 12px; font-size: 12px; overflow: auto; margin-bottom: 16px; }

.action-bar { margin-top: 20px; display: flex; gap: 12px; }