:root{--primary: #2563eb;--primary-dark: #1e40af;--primary-light: #eff6ff;--surface: #ffffff;--surface-alt: #f8fafc;--text-main: #1e293b;--text-muted: #64748b;--border: #e2e8f0;--shadow-sm: 0 1px 2px 0 rgb(0 0 0 / .05);--shadow-md: 0 4px 6px -1px rgb(0 0 0 / .1), 0 2px 4px -2px rgb(0 0 0 / .1);--shadow-lg: 0 10px 15px -3px rgb(0 0 0 / .1), 0 4px 6px -4px rgb(0 0 0 / .1);--radius-lg: 1rem;--radius-md: .75rem;--radius-sm: .5rem}*{box-sizing:border-box;margin:0;padding:0}body{font-family:Inter,system-ui,-apple-system,sans-serif;background-color:#f1f5f9;color:var(--text-main);line-height:1.5;-webkit-font-smoothing:antialiased}.landing-page{min-height:100vh;display:flex;flex-direction:column;background:radial-gradient(circle at top left,#e0f2fe,transparent 70%),radial-gradient(circle at bottom right,#f0fdf4,transparent 70%)}.content-container{max-width:1200px;margin:0 auto;padding:2rem;width:100%;flex:1;display:grid;grid-template-columns:1fr;gap:3rem;align-items:start}@media(min-width:1024px){.content-container{grid-template-columns:1fr 420px;padding-top:4rem}}.hero-section{display:flex;flex-direction:column;gap:2rem}.brand h1{font-size:3.5rem;font-weight:800;letter-spacing:-.025em;line-height:1;color:#0f172a}.brand h1 span{color:var(--primary)}.brand .tagline{font-size:1.25rem;color:var(--text-muted);font-weight:500;margin-top:.5rem}.description p{font-size:1.125rem;color:var(--text-muted);max-width:600px}.service-links{display:grid;grid-template-columns:repeat(auto-fit,minmax(200px,1fr));gap:1rem;margin-top:1rem}.service-card{display:flex;flex-direction:row;align-items:center;gap:1rem;background:var(--surface);padding:1.25rem;border-radius:var(--radius-md);box-shadow:var(--shadow-sm);text-decoration:none;border:1px solid transparent;transition:all .2s ease}.service-card:hover{transform:translateY(-2px);box-shadow:var(--shadow-md);border-color:var(--primary-light)}.card-icon{width:48px;height:48px;display:flex;align-items:center;justify-content:center;background:var(--primary-light);border-radius:var(--radius-sm);color:var(--primary)}.card-icon svg{width:24px;height:24px}.card-details h3{font-size:1rem;font-weight:600;color:var(--text-main)}.card-details span{font-size:.8rem;color:var(--text-muted)}.footer-bar{text-align:center;padding:2rem;color:var(--text-muted);font-size:.875rem;margin-top:auto}.chat-section{width:100%}.chat-container{background:var(--surface);border-radius:var(--radius-lg);box-shadow:var(--shadow-lg);display:flex;flex-direction:column;height:650px;overflow:hidden;border:1px solid var(--border)}.chat-header{display:flex;justify-content:space-between;align-items:center;padding:1rem 1.5rem;background:var(--surface);border-bottom:1px solid var(--border);color:var(--text-main);font-weight:600}.model-select{font-size:.8rem;padding:.3rem .6rem;border-radius:var(--radius-sm);border:1px solid var(--border);background:var(--surface-alt);color:var(--text-main);cursor:pointer;outline:none}.model-select:focus{border-color:var(--primary)}.btn-settings{background:none;border:none;color:var(--text-muted);font-size:1.1rem;cursor:pointer;padding:.25rem;border-radius:50%;transition:background .2s}.btn-settings:hover{background:var(--surface-alt);color:var(--text-main)}.settings-panel{background:var(--surface-alt);border-bottom:1px solid var(--border);padding:1rem 1.5rem;display:flex;flex-wrap:wrap;gap:1rem}.settings-row{display:flex;flex-direction:column;font-size:.75rem;color:var(--text-muted);gap:.25rem;min-width:120px}.status-badge{font-size:.7rem;font-weight:600;padding:.25rem .6rem;border-radius:999px;text-transform:uppercase;letter-spacing:.02em}.status-bot{background:var(--primary-light);color:var(--primary)}.status-waiting{background:#fef3c7;color:#b45309}.status-human{background:#dcfce7;color:#15803d}.chat-messages{flex:1;overflow-y:auto;padding:1.5rem;display:flex;flex-direction:column;gap:1rem;background:#fafafa}.chat-messages::-webkit-scrollbar{width:6px}.chat-messages::-webkit-scrollbar-thumb{background:#cbd5e1;border-radius:3px}.chat-messages::-webkit-scrollbar-track{background:transparent}.chat-empty{color:var(--text-muted);text-align:center;margin-top:40%;font-size:.95rem}.message{max-width:80%;display:flex;flex-direction:column;gap:.25rem}.message-sender{font-size:.7rem;color:var(--text-muted);font-weight:600;margin-left:.25rem}.message p{padding:.75rem 1rem;border-radius:var(--radius-md);font-size:.95rem;line-height:1.5;box-shadow:var(--shadow-sm)}.message-customer{align-self:flex-end;align-items:flex-end}.message-customer p{background:var(--primary);color:#fff;border-bottom-right-radius:2px}.message-customer .message-sender{margin-right:.25rem;margin-left:0}.message-bot p,.message-operator p{background:var(--surface);color:var(--text-main);border-bottom-left-radius:2px;border:1px solid var(--border)}.chat-input-area{background:var(--surface);border-top:1px solid var(--border);padding:1rem 1.5rem;display:flex;flex-direction:column;gap:.75rem}.btn-human{align-self:flex-start;font-size:.75rem;padding:.4rem .8rem;border:1px solid var(--primary);background:var(--primary-light);color:var(--primary);border-radius:999px;cursor:pointer;font-weight:500;transition:all .2s}.btn-human:hover{background:var(--primary);color:#fff}.chat-input-wrapper{display:flex;gap:.5rem}.chat-input-area textarea{flex:1;resize:none;border:1px solid var(--border);border-radius:var(--radius-md);padding:.75rem;font-size:.95rem;font-family:inherit;outline:none;background:var(--surface-alt);min-height:20px;height:auto;transition:border-color .2s}.chat-input-area textarea:focus{border-color:var(--primary);background:var(--surface)}.btn-send{padding:0 1.25rem;background:var(--primary);color:#fff;border:none;border-radius:var(--radius-md);font-size:.95rem;cursor:pointer;font-weight:600;transition:background .2s;display:flex;align-items:center;justify-content:center}.btn-send:hover:not(:disabled){background:var(--primary-dark)}.btn-send:disabled{opacity:.6;cursor:not-allowed;background:var(--text-muted)}@media(max-width:768px){.chat-container{height:500px}.content-container{gap:2rem;padding:1.5rem}.brand h1{font-size:2.5rem}}