@import "https://fonts.googleapis.com/css2?family=Inter:wght@300;400;500;600;700&display=swap";:root{--color-primary:#6366f1;--color-primary-hover:#4f46e5;--color-secondary:#ec4899;--bg-app:#0f172a;--bg-panel:#1e293b;--bg-glass:#1e293bb3;--bg-glass-hover:#1e293be6;--bg-input:#334155;--text-primary:#f8fafc;--text-secondary:#94a3b8;--text-muted:#64748b;--border-color:#ffffff1a;--shadow-sm:0 1px 2px 0 #0000000d;--shadow-md:0 4px 6px -1px #0000001a, 0 2px 4px -1px #0000000f;--shadow-lg:0 10px 15px -3px #0000001a, 0 4px 6px -2px #0000000d;--shadow-glow:0 0 15px #6366f180;--space-1:.25rem;--space-2:.5rem;--space-3:.75rem;--space-4:1rem;--space-6:1.5rem;--space-8:2rem;--radius-sm:.375rem;--radius-md:.5rem;--radius-lg:.75rem;--radius-xl:1rem;--radius-full:9999px;--transition-fast:.15s cubic-bezier(.4, 0, .2, 1);--transition-normal:.3s cubic-bezier(.4, 0, .2, 1)}*{box-sizing:border-box;margin:0;padding:0}body{background-color:var(--bg-app);color:var(--text-primary);-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale;font-family:Inter,system-ui,-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;line-height:1.5}.glass-panel{background:var(--bg-glass);-webkit-backdrop-filter:blur(12px);border:1px solid var(--border-color);border-radius:var(--radius-xl);box-shadow:var(--shadow-lg)}.gradient-text{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));-webkit-text-fill-color:transparent;-webkit-background-clip:text;background-clip:text}.btn-primary{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));color:#fff;border-radius:var(--radius-md);padding:var(--space-2) var(--space-4);cursor:pointer;transition:transform var(--transition-fast), box-shadow var(--transition-fast);justify-content:center;align-items:center;gap:var(--space-2);border:none;font-weight:600;display:inline-flex}.btn-primary:hover{box-shadow:var(--shadow-glow);transform:translateY(-2px)}.btn-primary:active{transform:translateY(0)}.input-field{background-color:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-md);padding:var(--space-2) var(--space-3);width:100%;transition:border-color var(--transition-fast), box-shadow var(--transition-fast);font-family:inherit;font-size:1rem}.input-field:focus{border-color:var(--color-primary);outline:none;box-shadow:0 0 0 2px #6366f133}@keyframes fadeIn{0%{opacity:0;transform:translateY(10px)}to{opacity:1;transform:translateY(0)}}.animate-fade-in{animation:fadeIn var(--transition-normal) forwards}::-webkit-scrollbar{width:6px;height:6px}::-webkit-scrollbar-track{background:0 0}::-webkit-scrollbar-thumb{background:var(--bg-input);border-radius:var(--radius-full)}::-webkit-scrollbar-thumb:hover{background:var(--text-muted)}.auth-container{min-height:100vh;padding:var(--space-4);background:radial-gradient(circle at 50% -20%, #6366f126, transparent 60%), radial-gradient(circle at -20% 80%, #ec489926, transparent 60%), var(--bg-app);justify-content:center;align-items:center;display:flex}.auth-card{width:100%;max-width:420px;padding:var(--space-8);gap:var(--space-6);flex-direction:column;display:flex}.auth-header{text-align:center}.auth-header h1{margin-bottom:var(--space-2);font-size:2rem;font-weight:700}.auth-subtitle{color:var(--text-secondary);font-size:.95rem}.auth-form{gap:var(--space-4);flex-direction:column;display:flex}.form-group{gap:var(--space-2);flex-direction:column;display:flex}.form-group label{color:var(--text-secondary);font-size:.875rem;font-weight:500}.auth-submit{margin-top:var(--space-2);width:100%;padding:var(--space-3);font-size:1rem}.auth-footer{text-align:center;margin-top:var(--space-4)}.toggle-auth-mode{color:var(--text-secondary);cursor:pointer;transition:color var(--transition-fast);background:0 0;border:none;font-size:.9rem}.toggle-auth-mode:hover{color:var(--color-primary)}.chat-layout{height:100vh;padding:var(--space-4);gap:var(--space-4);background:radial-gradient(circle at top right, #6366f11a, transparent 40%), radial-gradient(circle at bottom left, #ec48991a, transparent 40%), var(--bg-app);display:flex;overflow:hidden}.chat-sidebar{width:72px;padding:var(--space-4) 0;border-radius:var(--radius-xl);flex-direction:column;justify-content:space-between;align-items:center;display:flex}.sidebar-top,.sidebar-bottom{gap:var(--space-4);flex-direction:column;display:flex}.nav-item{border-radius:var(--radius-lg);width:48px;height:48px;color:var(--text-secondary);cursor:pointer;transition:all var(--transition-fast);justify-content:center;align-items:center;display:flex}.nav-item:hover{color:var(--text-primary);background:#ffffff0d}.nav-item.active{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));color:#fff;box-shadow:var(--shadow-glow)}.user-avatar{border-radius:var(--radius-full);border:2px solid var(--border-color);object-fit:cover;width:40px;height:40px}.conversations-panel{border-radius:var(--radius-xl);flex-direction:column;width:320px;display:flex;overflow:hidden}.panel-header{padding:var(--space-4);border-bottom:1px solid var(--border-color)}.panel-header h2{margin-bottom:var(--space-4);font-size:1.25rem;font-weight:600}.conversations-list{padding:var(--space-2);flex:1;overflow-y:auto}.conversation-item{align-items:center;gap:var(--space-3);padding:var(--space-3);border-radius:var(--radius-lg);cursor:pointer;transition:background var(--transition-fast);margin-bottom:var(--space-1);display:flex}.conversation-item:hover{background:#ffffff0d}.conversation-item.active{border:1px solid var(--border-color);background:#ffffff1a}.convo-avatar{border-radius:var(--radius-full);background-color:var(--bg-input);width:48px;height:48px}.convo-details{flex:1;min-width:0}.convo-header{justify-content:space-between;align-items:center;margin-bottom:2px;display:flex}.convo-name{white-space:nowrap;text-overflow:ellipsis;font-weight:600;overflow:hidden}.convo-time{color:var(--text-muted);font-size:.75rem}.convo-last-msg{justify-content:space-between;align-items:center;display:flex}.msg-text{color:var(--text-secondary);white-space:nowrap;text-overflow:ellipsis;font-size:.875rem;overflow:hidden}.unread-badge{background:var(--color-secondary);color:#fff;border-radius:var(--radius-full);text-align:center;min-width:20px;padding:2px 6px;font-size:.75rem;font-weight:700}.chat-main{border-radius:var(--radius-xl);flex-direction:column;flex:1;display:flex}.chat-header{padding:var(--space-4);border-bottom:1px solid var(--border-color);justify-content:space-between;align-items:center;display:flex}.chat-recipient{align-items:center;gap:var(--space-3);display:flex}.recipient-avatar{border-radius:var(--radius-full);width:48px;height:48px}.recipient-info h3{font-size:1.1rem;font-weight:600}.status{color:var(--text-muted);align-items:center;gap:6px;font-size:.8rem;display:flex}.status.online:before{content:"";border-radius:var(--radius-full);background-color:#22c55e;width:8px;height:8px;display:inline-block}.icon-btn{color:var(--text-secondary);border-radius:var(--radius-full);cursor:pointer;width:40px;height:40px;transition:all var(--transition-fast);background:0 0;border:none;justify-content:center;align-items:center;display:flex}.icon-btn:hover{color:var(--text-primary);background:#ffffff1a}.chat-messages{padding:var(--space-6);gap:var(--space-4);flex-direction:column;flex:1;display:flex;overflow-y:auto}.message{gap:var(--space-3);max-width:75%;display:flex}.message.sent{flex-direction:row-reverse;align-self:flex-end}.msg-avatar{border-radius:var(--radius-full);align-self:flex-end;width:36px;height:36px}.msg-bubble{padding:var(--space-3) var(--space-4);border-radius:var(--radius-lg);font-size:.95rem;position:relative}.message.received .msg-bubble{background:var(--bg-input);border-bottom-left-radius:4px}.message.sent .msg-bubble{background:linear-gradient(135deg, var(--color-primary), var(--color-secondary));color:#fff;border-bottom-right-radius:4px}.msg-time{color:var(--text-muted);text-align:right;margin-top:4px;font-size:.7rem;display:block}.message.sent .msg-time{color:#ffffffb3}.chat-input-area{padding:var(--space-4);border-top:1px solid var(--border-color);align-items:center;gap:var(--space-2);display:flex}.message-input{background:var(--bg-input);border:1px solid var(--border-color);color:var(--text-primary);border-radius:var(--radius-full);padding:var(--space-3) var(--space-4);flex:1;font-family:inherit;font-size:.95rem}.message-input:focus{border-color:var(--color-primary);outline:none}.send-btn{border-radius:var(--radius-full);width:48px;height:48px;padding:0}