:root{--color-primary: #e85d4a;--color-primary-dark: #c94535;--color-accent: #f5a623;--color-teal: #2bb5a0;--color-teal-light: #e0f5f1;--color-bg: #faf8f5;--color-card: #ffffff;--color-text: #2d2a26;--color-text-muted: #7a756e;--color-border: #e8e4de;--color-input-bg: #f5f2ee;--color-shadow: rgba(45, 42, 38, .08);--color-shadow-lg: rgba(45, 42, 38, .12);--font-body: "Segoe UI", "SF Pro Display", "Helvetica Neue", system-ui, sans-serif;--radius-sm: 8px;--radius-md: 14px;--radius-lg: 22px;--radius-full: 50%;--transition: .2s ease}*,*:before,*:after{box-sizing:border-box;margin:0;padding:0}html{font-size:16px;-webkit-font-smoothing:antialiased;-moz-osx-font-smoothing:grayscale}body{font-family:var(--font-body);color:var(--color-text);background:var(--color-bg);line-height:1.5;min-height:100dvh}button{cursor:pointer;font-family:inherit;border:none;background:none}.auth-loading{display:flex;flex-direction:column;align-items:center;justify-content:center;min-height:100dvh;gap:1rem}.auth-loading-spinner{width:36px;height:36px;border:3px solid var(--color-border);border-top-color:var(--color-primary);border-radius:var(--radius-full);animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.login-page{display:flex;align-items:center;justify-content:center;min-height:100dvh;padding:1.5rem;position:relative;overflow:hidden}.login-bg{position:fixed;top:0;right:0;bottom:0;left:0;pointer-events:none;z-index:0}.login-shape{position:absolute;border-radius:var(--radius-lg);opacity:.12}.login-shape--1{width:280px;height:280px;background:var(--color-primary);top:-60px;right:-40px;transform:rotate(15deg);border-radius:40px;animation:float 12s ease-in-out infinite}.login-shape--2{width:180px;height:180px;background:var(--color-accent);bottom:10%;left:-30px;border-radius:var(--radius-full);animation:float 10s ease-in-out infinite 2s}.login-shape--3{width:120px;height:120px;background:var(--color-teal);top:40%;right:10%;transform:rotate(45deg);border-radius:20px;animation:float 14s ease-in-out infinite 4s}.login-shape--4{width:200px;height:200px;background:var(--color-teal);bottom:-40px;right:30%;border-radius:30px;transform:rotate(-20deg);animation:float 11s ease-in-out infinite 1s}@keyframes float{0%,to{transform:translateY(0) rotate(var(--r, 15deg))}50%{transform:translateY(-20px) rotate(var(--r, 15deg))}}.login-card{position:relative;z-index:1;background:var(--color-card);border-radius:var(--radius-lg);padding:3rem 2.5rem;max-width:420px;width:100%;box-shadow:0 4px 24px var(--color-shadow),0 1px 3px var(--color-shadow);text-align:center}.login-brand{margin-bottom:2.5rem}.login-logo{display:inline-flex;align-items:center;justify-content:center;width:64px;height:64px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;font-size:1.75rem;font-weight:800;border-radius:18px;margin-bottom:1.25rem;box-shadow:0 4px 16px #e85d4a4d}.login-title{font-size:1.625rem;font-weight:700;letter-spacing:-.02em;color:var(--color-text);margin-bottom:.5rem}.login-subtitle{font-size:.9375rem;color:var(--color-text-muted);line-height:1.5}.login-button{display:inline-flex;align-items:center;justify-content:center;gap:.75rem;width:100%;padding:.875rem 1.5rem;background:var(--color-card);border:2px solid var(--color-border);border-radius:var(--radius-md);font-size:1rem;font-weight:600;color:var(--color-text);transition:all var(--transition)}.login-button:hover{border-color:var(--color-primary);box-shadow:0 2px 12px var(--color-shadow);transform:translateY(-1px)}.login-button:active{transform:translateY(0)}.login-button:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.login-button-icon{width:20px;height:20px;flex-shrink:0}.login-footer{margin-top:1.75rem;font-size:.8125rem;color:var(--color-text-muted);line-height:1.5}.chat-page{display:flex;flex-direction:column;height:100dvh;background:var(--color-bg)}.chat-header{display:flex;align-items:center;justify-content:space-between;padding:.75rem 1.25rem;background:var(--color-card);border-bottom:1px solid var(--color-border);flex-shrink:0}.chat-header-brand{display:flex;align-items:center;gap:.625rem}.chat-logo{display:inline-flex;align-items:center;justify-content:center;width:36px;height:36px;background:linear-gradient(135deg,var(--color-primary),var(--color-accent));color:#fff;font-size:1rem;font-weight:800;border-radius:10px}.chat-header-title{font-size:1.0625rem;font-weight:700;letter-spacing:-.01em}.chat-logout{font-size:.8125rem;font-weight:500;color:var(--color-text-muted);padding:.375rem .75rem;border-radius:var(--radius-sm);transition:all var(--transition)}.chat-logout:hover{color:var(--color-primary);background:#e85d4a0f}.chat-logout:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.chat-messages{flex:1;overflow-y:auto;padding:2rem 1.25rem;display:flex;flex-direction:column;align-items:center;justify-content:center}.chat-welcome{text-align:center;max-width:360px}.chat-welcome-icon{display:inline-flex;align-items:center;justify-content:center;width:56px;height:56px;background:var(--color-teal-light);color:var(--color-teal);font-size:1.5rem;font-weight:800;border-radius:16px;margin-bottom:1.25rem}.chat-welcome-title{font-size:1.25rem;font-weight:700;margin-bottom:.5rem;letter-spacing:-.01em}.chat-welcome-text{font-size:.9375rem;color:var(--color-text-muted);line-height:1.6}.chat-input-bar{display:flex;align-items:center;gap:.5rem;padding:.75rem 1rem;background:var(--color-card);border-top:1px solid var(--color-border);flex-shrink:0}.chat-input{flex:1;padding:.75rem 1rem;background:var(--color-input-bg);border:1.5px solid transparent;border-radius:var(--radius-md);font-size:.9375rem;font-family:inherit;color:var(--color-text);transition:all var(--transition)}.chat-input::placeholder{color:var(--color-text-muted)}.chat-input:focus{outline:none;border-color:var(--color-teal);background:var(--color-card);box-shadow:0 0 0 3px #2bb5a01f}.chat-send{display:inline-flex;align-items:center;justify-content:center;width:42px;height:42px;background:var(--color-primary);color:#fff;border-radius:var(--radius-md);flex-shrink:0;transition:all var(--transition)}.chat-send svg{width:18px;height:18px}.chat-send:hover:not(:disabled){background:var(--color-primary-dark);transform:translateY(-1px)}.chat-send:disabled{opacity:.4;cursor:not-allowed}.chat-send:focus-visible{outline:2px solid var(--color-primary);outline-offset:2px}.callback-page{min-height:100dvh;display:flex;align-items:center;justify-content:center}.callback-text{font-size:.9375rem;color:var(--color-text-muted)}@media(min-width:768px){.login-card{padding:3.5rem 3rem}.login-logo{width:72px;height:72px;font-size:2rem;border-radius:20px}.login-title{font-size:1.875rem}.chat-header{padding:.875rem 2rem}.chat-messages{padding:2rem}.chat-input-bar{padding:1rem 2rem}}