.chat-container{background:#fff;border-radius:12px;box-shadow:0 2px 12px #6576ff14;display:flex;flex-direction:column;max-height:400px;min-height:280px;border:1px solid #e5e9f2;overflow:hidden}.chat-header{background:linear-gradient(135deg,#6576ff,#5a67d8);color:#fff;padding:14px 16px;border-radius:12px 12px 0 0;display:flex;align-items:center;gap:10px;flex-shrink:0}.chat-header-icon{font-size:22px;opacity:.9}.chat-header-title{margin:0;font-size:15px;font-weight:600;letter-spacing:.2px;flex:1}.chat-save-btn{background:#fff3;border:none;border-radius:6px;padding:6px 10px;cursor:pointer;transition:background .2s;margin-left:auto}.chat-save-btn:hover{background:#ffffff4d}.chat-save-btn em{color:#fff;font-size:16px}.chat-timestamp{font-size:11px;color:#8094ae;text-align:center;padding:8px 0;background:#f8f9fc;border-bottom:1px solid #e5e9f2;flex-shrink:0}.chat-messages{flex:1;overflow-y:auto;padding:16px;background:#f8f9fc;min-height:0}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-messages::-webkit-scrollbar-thumb{background:#d0d5dd;border-radius:3px}.chat-messages::-webkit-scrollbar-thumb:hover{background:#b0b5bd}.chat-msg{display:flex;margin-bottom:12px}.chat-msg-left{justify-content:flex-start}.chat-msg-right{justify-content:flex-end}.chat-bubble{max-width:80%;padding:10px 14px;border-radius:16px;font-size:13px;line-height:1.5;word-wrap:break-word}.chat-bubble-left{background:#fff;color:#364a63;border:1px solid #e5e9f2;border-bottom-left-radius:4px}.chat-bubble-right{background:#6576ff;color:#fff;border-bottom-right-radius:4px}.chat-bubble-bot{background:linear-gradient(135deg,#e8f5e9,#c8e6c9);color:#2e7d32;border:1px solid #a5d6a7;border-bottom-right-radius:4px}.chat-sender{font-weight:600;font-size:11px;margin-bottom:4px;display:block}.chat-sender-left{color:#6576ff}.chat-sender-right{color:#ffffffd9}.chat-sender-bot{color:#388e3c}.chat-input-area{display:flex;align-items:center;padding:12px 16px;background:#fff;border-top:1px solid #e5e9f2;gap:10px;flex-shrink:0}.chat-input{flex:1;border:1px solid #e5e9f2;border-radius:20px;padding:10px 16px;font-size:13px;outline:none;transition:border-color .2s,box-shadow .2s}.chat-input:focus{border-color:#6576ff;box-shadow:0 0 0 3px #6576ff1a}.chat-input::placeholder{color:#8094ae}.chat-send-btn{width:38px;height:38px;border-radius:50%;background:#6576ff;border:none;display:flex;align-items:center;justify-content:center;cursor:pointer;transition:background .2s,transform .1s;flex-shrink:0}.chat-send-btn:hover{background:#5a67d8;transform:scale(1.05)}.chat-send-btn:active{transform:scale(.95)}.chat-send-btn i,.chat-send-btn em{color:#fff;font-size:16px}.chat-student-select{padding:10px 16px;background:#f8f9fc;border-bottom:1px solid #e5e9f2;flex-shrink:0}.chat-student-select select{width:100%;padding:10px 14px;border:1px solid #e5e9f2;border-radius:8px;font-size:13px;color:#364a63;background:#f8f9fc;cursor:pointer;outline:none;transition:border-color .2s}.chat-student-select select:focus{border-color:#6576ff}.chat-toggle-btn{color:#6576ff;background:transparent;border:none;padding:8px 14px;display:flex;align-items:center;gap:8px;cursor:pointer;font-size:14px;font-weight:500;transition:background .2s;border-radius:8px}.chat-toggle-btn:hover{background:#6576ff14}.chat-toggle-icon{position:relative;font-size:1.25rem}.chat-unread-badge{position:absolute;top:-8px;right:-8px;background:#e85347;color:#fff;border-radius:50%;min-width:18px;height:18px;display:flex;align-items:center;justify-content:center;font-size:10px;font-weight:700;animation:chatPulse 1.5s infinite}.chat-toast{position:fixed;top:20px;right:20px;z-index:1060;width:320px;background:#fff;border-radius:12px;border-left:4px solid #6576ff;box-shadow:0 4px 20px #0000001f;cursor:pointer;animation:slideIn .3s ease-out;overflow:hidden}.chat-toast-inner{padding:14px 16px;display:flex;align-items:flex-start;gap:12px}.chat-toast-avatar{width:40px;height:40px;border-radius:50%;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-toast-avatar-student{background:#f0f0f0}.chat-toast-avatar-proctor{background:#e8f4ff}.chat-toast-avatar i{color:#6576ff;font-size:18px}.chat-toast-content{flex:1;min-width:0}.chat-toast-header{display:flex;justify-content:space-between;align-items:center;margin-bottom:4px}.chat-toast-sender{font-size:13px;font-weight:600;color:#364a63}.chat-toast-time{font-size:11px;color:#8094ae}.chat-toast-text{font-size:12px;color:#526484;margin:0;overflow:hidden;text-overflow:ellipsis;white-space:nowrap}.chat-toast-close{background:transparent;border:none;padding:4px;cursor:pointer;opacity:.6;transition:opacity .2s}.chat-toast-close:hover{opacity:1}.chat-toast-close i{font-size:14px;color:#8094ae}@keyframes chatPulse{0%{transform:scale(1)}50%{transform:scale(1.15)}to{transform:scale(1)}}@keyframes slideIn{0%{opacity:0;transform:translate(20px)}to{opacity:1;transform:translate(0)}}.chat-msg-header{display:flex;align-items:center;gap:6px;flex-wrap:wrap;margin-bottom:4px}.chat-msg-time{display:block;font-size:10px;margin-top:6px;opacity:.7}.chat-bubble-right .chat-msg-time{color:#ffffffb3;text-align:right}.chat-bubble-left .chat-msg-time{color:#8094ae}.chat-bubble-bot .chat-msg-time{color:#66bb6a}.chat-recipient{font-size:10px;font-weight:500;padding:2px 6px;border-radius:8px;background:#fff3;color:#ffffffd9}.chat-recipient-all{background:#ffc1074d;color:#fff}.chat-empty{display:flex;flex-direction:column;align-items:center;justify-content:center;padding:40px 20px;color:#8094ae}.chat-empty-icon{font-size:48px;margin-bottom:12px;opacity:.5}.chat-empty-text{font-size:13px;text-align:center}.chat-status{display:flex;align-items:flex-start;gap:10px;padding:10px 14px;margin:0;font-size:12px;border-bottom:1px solid #e5e9f2}.chat-status em{font-size:16px;flex-shrink:0;margin-top:2px}.chat-status-available{background:#e8f5e9;color:#2e7d32}.chat-status-available em{color:#4caf50}.chat-status-busy{background:#fff3e0;color:#e65100}.chat-status-busy em{color:#ff9800}.chat-status-offline{background:#ffebee;color:#c62828}.chat-status-offline em{color:#f44336}.chat-status-content{display:flex;flex-direction:column;gap:2px}.chat-status-title{font-weight:600}.chat-status-queue{font-size:11px;opacity:.9}.chat-status-hint{font-size:11px;opacity:.8;font-style:italic}.chat-settings{background:#fff;border-radius:12px;box-shadow:0 2px 12px #6576ff14;border:1px solid #e5e9f2;overflow:hidden}.chat-settings-header{background:linear-gradient(135deg,#6576ff,#5a67d8);color:#fff;padding:14px 16px;display:flex;align-items:center;gap:10px;font-size:15px;font-weight:600}.chat-settings-header em{font-size:18px;opacity:.9}.chat-settings-close{margin-left:auto;background:#fff3;border:none;border-radius:6px;padding:4px 8px;cursor:pointer;transition:background .2s}.chat-settings-close:hover{background:#ffffff4d}.chat-settings-close em{color:#fff;font-size:14px}.chat-settings-body{padding:16px}.chat-settings-item{display:flex;align-items:center;justify-content:space-between;padding:12px 0}.chat-settings-item:not(:last-child){border-bottom:1px solid #f0f2f5}.chat-settings-label{display:flex;flex-direction:column;gap:2px}.chat-settings-label span{font-size:14px;font-weight:500;color:#364a63}.chat-settings-label small{font-size:12px;color:#8094ae}.chat-settings-divider{height:1px;background:#e5e9f2;margin:8px 0}.chat-settings-btn{padding:8px 16px;border-radius:6px;border:1px solid #e5e9f2;background:#f8f9fc;color:#364a63;font-size:13px;font-weight:500;cursor:pointer;transition:all .2s}.chat-settings-btn:hover:not(:disabled){background:#e85347;border-color:#e85347;color:#fff}.chat-settings-btn-success{background:#4caf50;border-color:#4caf50;color:#fff}.chat-toggle{position:relative;display:inline-block;width:44px;height:24px;flex-shrink:0}.chat-toggle input{opacity:0;width:0;height:0}.chat-toggle-slider{position:absolute;cursor:pointer;top:0;left:0;right:0;bottom:0;background-color:#d0d5dd;transition:.3s;border-radius:24px}.chat-toggle-slider:before{position:absolute;content:"";height:18px;width:18px;left:3px;bottom:3px;background-color:#fff;transition:.3s;border-radius:50%;box-shadow:0 1px 3px #00000026}.chat-toggle input:checked+.chat-toggle-slider{background-color:#6576ff}.chat-toggle input:checked+.chat-toggle-slider:before{transform:translate(20px)}.chat-settings-btn-icon{background:#fff3;border:none;border-radius:6px;padding:6px 10px;cursor:pointer;transition:background .2s}.chat-settings-btn-icon:hover{background:#ffffff4d}.chat-settings-btn-icon em{color:#fff;font-size:16px}