@import"https://fonts.googleapis.com/css2?family=Plus+Jakarta+Sans:wght@400;500;600;700;800&family=Inter:wght@300;400;500;600;700;800&family=JetBrains+Mono:wght@400;500;600;700&display=swap";:root{--brand-primary: #4361EE;--brand-primary-dark: #3651D4;--brand-primary-light: #6B83F5;--brand-primary-bg: rgba(67, 97, 238, .08);--brand-secondary: #7C3AED;--brand-accent: #F59E0B;--brand-accent-light: #FCD34D;--success: #10B981;--success-bg: rgba(16, 185, 129, .1);--warning: #F59E0B;--warning-bg: rgba(245, 158, 11, .1);--danger: #EF4444;--danger-bg: rgba(239, 68, 68, .08);--info: #06B6D4;--info-bg: rgba(6, 182, 212, .1);--bg-primary: #FFFFFF;--bg-secondary: #F8FAFC;--bg-tertiary: #F1F5F9;--bg-elevated: #FFFFFF;--bg-sunken: #EFF3F8;--card-bg: #FFFFFF;--card-border: rgba(0, 0, 0, .06);--card-shadow: 0 1px 3px rgba(0, 0, 0, .04), 0 1px 2px rgba(0, 0, 0, .06);--card-shadow-hover: 0 10px 25px -5px rgba(0, 0, 0, .08), 0 8px 10px -6px rgba(0, 0, 0, .04);--card-shadow-lg: 0 20px 40px -10px rgba(0, 0, 0, .1);--text-primary: #0C1222;--text-secondary: #3D4F6F;--text-muted: #8896AB;--text-inverse: #FFFFFF;--font-display: "Plus Jakarta Sans", "Inter", sans-serif;--font-body: "Inter", -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;--font-mono: "JetBrains Mono", "Fira Code", "Cascadia Code", monospace;--input-bg: #FFFFFF;--input-border: #CBD5E1;--divider: #E2E8F0;--sidebar-bg: #0F172A;--sidebar-bg-hover: rgba(255, 255, 255, .06);--sidebar-bg-active: rgba(67, 97, 238, .15);--sidebar-text: rgba(255, 255, 255, .6);--sidebar-text-active: #FFFFFF;--sidebar-accent: #4361EE;--sidebar-border: rgba(255, 255, 255, .08);--sidebar-width: 272px;--navbar-height: 68px;--radius-sm: 6px;--radius-md: 10px;--radius-lg: 14px;--radius-xl: 20px;--radius-full: 9999px;--card-padding: 24px;--border-radius: var(--radius-sm);--border-radius-md: var(--radius-md);--border-radius-lg: var(--radius-lg);--emerald: var(--brand-primary);--emerald-light: var(--brand-primary-light);--gold: 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#718096;--text-inverse: #0C1222;--input-bg: #1E293B;--input-border: #334155;--divider: #1E293B;--sidebar-bg: #060B18;--sidebar-bg-hover: rgba(255, 255, 255, .04);--sidebar-bg-active: rgba(67, 97, 238, .2);--sidebar-border: rgba(255, 255, 255, .06);--bg-dark: var(--bg-primary);--glass-bg: var(--card-bg);--glass-border: var(--card-border);--glass-shadow: 0 1px 3px rgba(0, 0, 0, .3);--glass-hover: var(--bg-tertiary)}*{margin:0;padding:0;box-sizing:border-box}body{font-family:var(--font-body);background:var(--bg-secondary);color:var(--text-primary);min-height:100vh;overflow-x:hidden;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;line-height:1.65;font-size:14.5px;font-feature-settings:"cv02","cv03","cv04","cv11"}h1,h2,h3,h4,h5,h6{font-family:var(--font-display);letter-spacing:-.025em;line-height:1.25;color:var(--text-primary)}h1{font-weight:800}h2,h3{font-weight:700}h4,h5,h6{font-weight:600}a{color:var(--brand-primary);text-decoration:none;transition:color .15s 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20px;background:linear-gradient(135deg,var(--brand-primary),#7C3AED);border-radius:var(--radius-lg);display:flex;align-items:center;justify-content:center;font-family:var(--font-display);font-weight:800;font-size:20px;color:#fff;box-shadow:0 8px 24px #4361ee4d}.login-header h1{font-family:var(--font-display);font-size:28px;font-weight:800;color:var(--text-primary);margin-bottom:6px;letter-spacing:-.03em}.login-subtitle{font-family:var(--font-body);font-size:15px;color:var(--text-muted);font-weight:400;letter-spacing:.005em}.login-card .btn-primary{width:100%;justify-content:center;padding:13px 24px;font-size:14.5px;font-weight:700;margin-top:8px}.login-footer{text-align:center;margin-top:28px;font-family:var(--font-body);font-size:13.5px;color:var(--text-muted);padding-top:20px;border-top:1px solid var(--divider)}.login-footer a{color:var(--brand-primary);font-weight:700}.login-footer a:hover{color:var(--brand-primary-dark)}.error-msg{background:var(--danger-bg);color:var(--danger);padding:12px 16px;border-radius:var(--radius-sm);font-family:var(--font-body);font-size:13px;font-weight:600;margin-bottom:20px;border:1px solid rgba(239,68,68,.15)}.chat-layout{display:flex;height:100%;background:var(--bg-primary)}.chat-sidebar{width:320px;border-right:1px solid var(--divider);display:flex;flex-direction:column;background:var(--bg-primary);flex-shrink:0}.chat-sidebar-header{display:flex;align-items:center;justify-content:space-between;padding:20px 20px 16px;border-bottom:1px solid var(--divider)}.chat-sidebar-header h3{font-family:var(--font-display);font-size:18px;font-weight:800;color:var(--text-primary);letter-spacing:-.02em}.chat-room-list{flex:1;overflow-y:auto;padding:8px}.chat-room-item{display:flex;align-items:center;gap:12px;padding:12px 14px;border-radius:var(--radius-sm);cursor:pointer;transition:all .15s ease;margin-bottom:2px}.chat-room-item:hover{background:var(--bg-tertiary)}.chat-room-item.active{background:var(--brand-primary-bg);border:1px solid rgba(67,97,238,.15)}.chat-room-icon{width:36px;height:36px;border-radius:var(--radius-sm);background:var(--bg-tertiary);display:flex;align-items:center;justify-content:center;color:var(--text-muted);flex-shrink:0}.chat-room-item.active .chat-room-icon{background:var(--brand-primary);color:#fff}.chat-room-info{flex:1;min-width:0}.chat-room-name{font-family:var(--font-display);font-size:13.5px;font-weight:700;color:var(--text-primary);margin-bottom:2px;letter-spacing:-.01em}.chat-room-last{font-family:var(--font-body);font-size:12px;color:var(--text-muted);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.chat-unread-badge{min-width:22px;height:22px;padding:0 7px;border-radius:var(--radius-full);background:var(--brand-primary);color:#fff;font-family:var(--font-display);font-size:10.5px;font-weight:800;display:flex;align-items:center;justify-content:center;flex-shrink:0}.chat-main{flex:1;display:flex;flex-direction:column;min-width:0}.chat-empty{flex:1;display:flex;flex-direction:column;align-items:center;justify-content:center;gap:12px;color:var(--text-muted)}.chat-empty h3{font-family:var(--font-display);font-size:18px;color:var(--text-secondary);font-weight:700;letter-spacing:-.01em}.chat-empty p{font-size:14px}.chat-header{display:flex;align-items:center;gap:10px;padding:16px 24px;border-bottom:1px solid var(--divider);background:var(--bg-primary)}.chat-header h3{font-family:var(--font-display);font-size:16px;font-weight:800;color:var(--text-primary);letter-spacing:-.02em}.chat-messages{flex:1;overflow-y:auto;padding:20px 24px;display:flex;flex-direction:column;gap:6px}.chat-message{display:flex;align-items:flex-start;gap:10px;max-width:75%}.chat-message.mine{margin-left:auto;flex-direction:row-reverse}.chat-message-avatar{width:32px;height:32px;border-radius:var(--radius-sm);background:linear-gradient(135deg,var(--brand-primary),#7C3AED);display:flex;align-items:center;justify-content:center;color:#fff;font-weight:700;font-size:12px;flex-shrink:0}.chat-message-body{max-width:100%}.chat-message-sender{font-family:var(--font-display);font-size:11.5px;font-weight:700;color:var(--text-secondary);margin-bottom:3px;letter-spacing:.005em}.chat-message-content{padding:10px 16px;border-radius:var(--radius-md);font-family:var(--font-body);font-size:14px;line-height:1.55;background:var(--bg-tertiary);color:var(--text-primary);word-break:break-word;font-weight:450}.chat-message.mine .chat-message-content{background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-dark));color:#fff;border-radius:var(--radius-md) var(--radius-md) 4px var(--radius-md)}.chat-message:not(.mine) .chat-message-content{border-radius:var(--radius-md) var(--radius-md) var(--radius-md) 4px}.chat-message-time{font-size:10px;color:var(--text-muted);margin-top:4px;padding:0 4px}.chat-message.mine .chat-message-time{text-align:right}.chat-input-area{display:flex;align-items:center;gap:12px;padding:16px 24px;border-top:1px solid var(--divider);background:var(--bg-primary)}.chat-input{flex:1;padding:12px 18px;border:1.5px solid var(--input-border);border-radius:var(--radius-full);background:var(--input-bg);color:var(--text-primary);font-family:var(--font-body);font-size:14px;font-weight:450;outline:none;transition:border-color .2s ease,box-shadow .2s ease}.chat-input:focus{border-color:var(--brand-primary);box-shadow:0 0 0 3px var(--brand-primary-bg)}.chat-input::placeholder{color:var(--text-muted)}.chat-send-btn{width:44px;height:44px;border:none;border-radius:50%;background:linear-gradient(135deg,var(--brand-primary),var(--brand-primary-dark));color:#fff;cursor:pointer;display:flex;align-items:center;justify-content:center;transition:all .2s ease;flex-shrink:0;box-shadow:0 2px 8px #4361ee4d}.chat-send-btn:hover:not(:disabled){transform:scale(1.05);box-shadow:0 4px 16px #4361ee66}.chat-send-btn:disabled{opacity:.4;cursor:not-allowed}@media (max-width: 768px){.chat-sidebar{width:260px}}@media (max-width: 640px){.chat-sidebar{display:none}}