:root{--primary: #4f46e5;--primary-hover: #4338ca;--secondary: #6b7280;--success: #059669;--warning: #d97706;--danger: #dc2626;--info: #0891b2;--bg: #f1f5f9;--card-bg: #ffffff;--text: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--sidebar-bg: #1e293b;--sidebar-text: #cbd5e1;--sidebar-active: #4f46e5}*{margin:0;padding:0;box-sizing:border-box}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}.loading-screen{display:flex;align-items:center;justify-content:center;height:100vh;font-size:1.2rem;color:var(--text-muted)}.app-layout{display:flex;min-height:100vh}.sidebar{width:240px;background:var(--sidebar-bg);color:var(--sidebar-text);display:flex;flex-direction:column;position:fixed;top:0;left:0;height:100vh}.sidebar-header{padding:1.5rem;border-bottom:1px solid rgba(255,255,255,.1)}.sidebar-header h2{color:#fff;font-size:1.2rem}.sidebar-links{flex:1;padding:1rem 0}.sidebar-links a{display:flex;align-items:center;gap:.75rem;padding:.75rem 1.5rem;color:var(--sidebar-text);text-decoration:none;transition:all .15s;font-size:.95rem}.sidebar-links a:hover{background:#ffffff0d;color:#fff}.sidebar-links a.active{background:var(--sidebar-active);color:#fff}.sidebar-footer{padding:1rem 1.5rem;border-top:1px solid rgba(255,255,255,.1)}.logout-btn{width:100%}.main-content{flex:1;margin-left:240px;padding:2rem}h1{font-size:1.75rem;margin-bottom:1.5rem}h2{font-size:1.35rem;margin-bottom:1rem}h3{font-size:1.1rem;margin-bottom:.75rem}.card{background:var(--card-bg);border-radius:8px;padding:1.5rem;margin-bottom:1.5rem;border:1px solid var(--border);box-shadow:0 1px 3px #0000000d}.stats-grid{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-bottom:2rem}.stats-card{background:var(--card-bg);border-radius:8px;padding:1.5rem;border:1px solid var(--border);border-left:4px solid var(--primary);box-shadow:0 1px 3px #0000000d}.stats-card-value{font-size:2rem;font-weight:700;color:var(--text)}.stats-card-title{font-size:.85rem;color:var(--text-muted);margin-top:.25rem}.dashboard-sections{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem}.page-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:1.5rem}.header-actions{display:flex;gap:.5rem}.table{width:100%;border-collapse:collapse}.table th,.table td{text-align:left;padding:.75rem .5rem;border-bottom:1px solid var(--border);font-size:.9rem}.table th{font-weight:600;color:var(--text-muted);font-size:.8rem;text-transform:uppercase;letter-spacing:.05em}.table tr:hover td{background:#f8fafc}.msg-preview{max-width:250px;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.badge{display:inline-block;padding:.2rem .6rem;border-radius:999px;font-size:.75rem;font-weight:600;text-transform:uppercase}.badge-draft{background:#e2e8f0;color:#475569}.badge-scheduled{background:#fef3c7;color:#92400e}.badge-sending{background:#dbeafe;color:#1e40af}.badge-sent,.badge-success{background:#d1fae5;color:#065f46}.badge-failed,.badge-danger{background:#fee2e2;color:#991b1b}.badge-pending{background:#f1f5f9;color:#475569}.badge-info{background:#cffafe;color:#155e75}.btn{display:inline-flex;align-items:center;justify-content:center;padding:.5rem 1rem;border:1px solid var(--border);border-radius:6px;font-size:.9rem;font-weight:500;cursor:pointer;transition:all .15s;background:var(--card-bg);color:var(--text);text-decoration:none}.btn:hover{opacity:.9}.btn:disabled{opacity:.5;cursor:not-allowed}.btn-primary{background:var(--primary);color:#fff;border-color:var(--primary)}.btn-primary:hover{background:var(--primary-hover)}.btn-secondary{background:var(--secondary);color:#fff;border-color:var(--secondary)}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn-sm{padding:.3rem .6rem;font-size:.8rem}.btn-block{width:100%}.link-btn{background:none;border:none;color:var(--primary);cursor:pointer;font-size:inherit;padding:0;text-decoration:underline}.form-group{margin-bottom:1rem}.form-group label{display:block;margin-bottom:.35rem;font-weight:500;font-size:.9rem}.form-group small{color:var(--text-muted);font-size:.8rem}input,textarea,select{width:100%;padding:.6rem .75rem;border:1px solid var(--border);border-radius:6px;font-size:.95rem;font-family:inherit;transition:border-color .15s}input:focus,textarea:focus,select:focus{outline:none;border-color:var(--primary);box-shadow:0 0 0 3px #4f46e51a}textarea{resize:vertical}.form-inline{display:flex;gap:.5rem;align-items:end}.form-vertical{max-width:600px}.group-checkboxes{display:flex;flex-wrap:wrap;gap:.75rem}.checkbox-label{display:flex;align-items:center;gap:.35rem;font-size:.9rem;cursor:pointer}.checkbox-label input{width:auto}.detail-list{display:grid;grid-template-columns:auto 1fr;gap:.5rem 1rem}.detail-list dt{font-weight:600;color:var(--text-muted);font-size:.85rem}.detail-list dd{font-size:.95rem}.group-list{display:flex;flex-wrap:wrap;gap:.5rem}.alert{padding:.75rem 1rem;border-radius:6px;margin-bottom:1rem;font-size:.9rem}.alert-error{background:#fee2e2;color:#991b1b;border:1px solid #fecaca}.empty{color:var(--text-muted);text-align:center;padding:2rem}.loading{text-align:center;padding:3rem;color:var(--text-muted)}.pagination{display:flex;align-items:center;justify-content:center;gap:1rem;margin-top:1rem;font-size:.9rem;color:var(--text-muted)}.login-page{display:flex;align-items:center;justify-content:center;min-height:100vh;background:var(--bg)}.login-card{background:var(--card-bg);border-radius:12px;padding:2.5rem;width:400px;max-width:90vw;border:1px solid var(--border);box-shadow:0 4px 24px #00000014}.login-card h1{text-align:center;margin-bottom:.5rem}.login-card h2{text-align:center;color:var(--text-muted);font-weight:400;margin-bottom:1.5rem}.auth-toggle{text-align:center;margin-top:1rem;font-size:.9rem;color:var(--text-muted)}.inbox-layout{display:grid;grid-template-columns:1fr 1fr;gap:1.5rem;align-items:start}.inbox-list{min-width:0}.inbox-conversation{position:sticky;top:2rem}.conversation-card{display:flex;flex-direction:column;height:calc(100vh - 200px);max-height:600px}.conversation-header{display:flex;justify-content:space-between;align-items:center;padding-bottom:.75rem;border-bottom:1px solid var(--border);margin-bottom:.75rem}.conversation-header h3{font-size:1rem;margin:0}.conversation-messages{flex:1;overflow-y:auto;padding:.5rem 0;display:flex;flex-direction:column;gap:.5rem}.message-bubble{max-width:85%;padding:.6rem .9rem;border-radius:10px;font-size:.9rem;line-height:1.4}.message-bubble.sent{align-self:flex-end;background:var(--primary);color:#fff;border-bottom-right-radius:2px}.message-bubble.received{align-self:flex-start;background:#f1f5f9;color:var(--text);border-bottom-left-radius:2px}.message-meta{font-size:.7rem;opacity:.7;margin-top:.25rem}.message-bubble.received .message-meta{color:var(--text-muted)}.message-bubble.sent .message-meta{color:#fffc}.conversation-reply{padding-top:.75rem;border-top:1px solid var(--border);margin-top:.5rem}.reply-row{display:flex;gap:.5rem;align-items:center;flex-wrap:wrap}.reply-from{width:auto;min-width:120px;max-width:160px;padding:.4rem .5rem;border:1px solid var(--border);border-radius:4px;font-size:.85rem}.channel-selector.compact{display:flex;gap:0;border:1px solid var(--border);border-radius:4px;overflow:hidden;font-size:.8rem}.channel-selector.compact .mode-option{padding:.3rem .6rem;margin:0;cursor:pointer;background:var(--bg);transition:background .15s}.channel-selector.compact .mode-option.active{background:var(--primary);color:#fff}.channel-selector.compact .mode-option input{display:none}.reply-from{width:auto;min-width:120px;max-width:200px;font-size:.8rem}.reply-row input{flex:1}.bulk-actions{display:flex;justify-content:space-between;align-items:center;background:#eef2ff;border-color:#c7d2fe}.bulk-actions select{width:auto}.row-selected{background:#eef2ff!important}.group-badge{display:inline-flex;align-items:center;gap:.25rem}.badge-remove{background:none;border:none;color:inherit;cursor:pointer;font-size:1rem;line-height:1;padding:0;opacity:.7}.badge-remove:hover{opacity:1}.mode-selector{display:flex;gap:0;border:1px solid var(--border);border-radius:6px;overflow:hidden}.mode-option{flex:1;display:flex;align-items:center;justify-content:center;gap:.35rem;padding:.6rem .75rem;cursor:pointer;font-size:.85rem;font-weight:500;border-right:1px solid var(--border);background:var(--card-bg);transition:all .15s}.mode-option:last-child{border-right:none}.mode-option.active{background:var(--primary);color:#fff}.mode-option input{display:none}.contact-picker{max-height:240px;overflow-y:auto;border:1px solid var(--border);border-radius:6px;margin-top:.5rem}.picker-item{display:flex!important;align-items:center;gap:.5rem;padding:.5rem .75rem;border-bottom:1px solid var(--border);cursor:pointer;transition:background .1s}.picker-item:last-child{border-bottom:none}.picker-item:hover{background:#f8fafc}.picker-item.selected{background:#eef2ff}.picker-item input{width:auto;flex-shrink:0}.picker-phone{font-family:monospace;font-size:.9rem;font-weight:500}.picker-name{color:var(--text-muted);font-size:.85rem}.channel-selector{display:flex;gap:0;border:1px solid var(--border);border-radius:6px;overflow:hidden}.campaign-summary{padding:.75rem;background:#f0fdf4;border:1px solid #bbf7d0;border-radius:6px;margin-bottom:1rem;font-size:.9rem;text-align:center}@media(max-width:768px){.sidebar{display:none}.main-content{margin-left:0}.dashboard-sections,.inbox-layout{grid-template-columns:1fr}.stats-grid{grid-template-columns:1fr 1fr}.header-actions{flex-wrap:wrap}}