*{box-sizing:border-box}:root{--bg: #f3f6fb;--panel: #ffffff;--panel-soft: #f8fafd;--border: #d9e2ef;--text: #1f2a37;--muted: #607084;--primary: #2563eb;--primary-hover: #1d4ed8;--danger: #dc2626}body{margin:0;font-family:Calibri,Segoe UI,Arial,sans-serif;background:var(--bg);color:var(--text);line-height:1.5}button,input,select{font-family:inherit;font-size:inherit}.app-loading{min-height:100vh;display:grid;place-items:center;text-align:center;gap:12px}.spinner{width:36px;height:36px;border:3px solid #d5deec;border-top-color:var(--primary);border-radius:50%;animation:spin .8s linear infinite}@keyframes spin{to{transform:rotate(360deg)}}.auth-shell{min-height:100vh;display:grid;place-items:center;padding:24px}.auth-card{width:100%;max-width:380px;background:var(--panel);border:1px solid var(--border);border-radius:14px;padding:32px 28px;box-shadow:0 12px 28px #11182714}.auth-card h1{margin:0 0 4px;font-size:1.6rem}.auth-brand{display:inline-flex;align-items:center;gap:10px;margin-bottom:10px}.auth-brand-avatar{width:42px;height:42px;border-radius:50%;object-fit:cover;border:1px solid var(--border);box-shadow:0 4px 14px #1118271f}.auth-brand-name{font-size:1rem;font-weight:700;letter-spacing:.02em;color:#1d4ed8}.auth-subtitle{margin:0 0 18px;color:var(--muted);font-size:.9rem}.auth-tabs{display:flex;gap:8px;margin-bottom:20px}.auth-tabs button{flex:1;padding:9px 0;background:#eef3fb;border:1px solid var(--border);color:#334155;border-radius:8px;cursor:pointer}.auth-tabs button.active{background:var(--primary);border-color:var(--primary);color:#fff}.auth-card form{display:grid;gap:14px}.auth-card label{display:grid;gap:6px;font-size:.88rem;color:#334155}.auth-card input{padding:10px 12px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text)}.auth-card input:focus,.composer input:focus,.profile input:focus,.message-dropdowns 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