@import url("https://fonts.googleapis.com/css2?family=Inter:ital,opsz,wght@0,14..32,400..700;1,14..32,400..600&family=Geist+Mono:wght@400;500&display=swap");:root{--canvas:#F4F5F6;--surface:#FFFFFF;--surface-2:#FAFBFC;--surface-sunken:#EBEDF1;--surface-active:#E6ECF8;--surface-dark:#1C2533;--surface-dark-2:#243044;--surface-dark-3:#30405A;--text:#1A2230;--text-2:#44505F;--text-3:#6B7685;--text-4:#99A3B0;--text-on-dark:#F4F6F8;--accent:#2563EB;--accent-strong:#1D4ED8;--accent-soft:#7CA0F5;--accent-tint:rgba(37,99,235,0.12);--n-50:#F6F8FA;--n-100:#ECEFF3;--n-200:#DCE1E9;--n-300:#C0C8D4;--border:rgba(28,37,51,0.10);--border-strong:rgba(28,37,51,0.20);--success:#1F7A4D;--success-bg:#E2F0E8;--warning:#9A6B12;--warning-bg:#F6ECCF;--danger:#B23A29;--danger-bg:#F6DED7;--font-sans:"Inter",system-ui,-apple-system,sans-serif;--font-mono:"Geist Mono",ui-monospace,monospace;--radius-sm:5px;--radius-md:7px;--radius-lg:9px;--radius-xl:11px;--shadow-sm:0 1px 2px rgba(20,32,30,0.07);--shadow-md:0 4px 12px -4px rgba(20,32,30,0.12)}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:var(--font-sans);background:var(--canvas);color:var(--text);font-size:14px;line-height:1.45}a{color:var(--accent);text-decoration:none}:focus-visible{outline:2px solid var(--accent);outline-offset:2px}.mono{font-family:var(--font-mono)}.tool{min-height:100vh;display:flex;flex-direction:column}.inbox-area{flex:1 1;padding:16px 18px 32px}.inbox-grid{display:grid;grid-template-columns:320px 1fr;grid-gap:16px;gap:16px;height:calc(100vh - 56px - 48px)}@media (max-width:860px){.inbox-grid{grid-template-columns:1fr;height:auto}}.inbox-list{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);display:flex;flex-direction:column;overflow:hidden}.inbox-list-head{padding:12px 14px;border-bottom:1px solid var(--border);font-weight:600;font-size:13px;display:flex;align-items:center;gap:8px}.inbox-list-head .count{margin-left:auto;font-family:var(--font-mono);font-size:10px;color:var(--text-3)}.inbox-thread-list{overflow-y:auto;flex:1 1}.inbox-thread{display:block;text-decoration:none;color:inherit;padding:13px 15px;border-bottom:1px dashed var(--border);cursor:pointer}.inbox-thread:hover{background:var(--surface-2)}.inbox-thread.is-active{background:var(--surface-active);box-shadow:inset 2px 0 0 var(--accent);padding-left:13px}.inbox-thread-head{display:flex;align-items:center;gap:8px}.inbox-thread-name{font-size:13px;font-weight:600;color:var(--text);white-space:nowrap;overflow:hidden;text-overflow:ellipsis}.inbox-thread-time{margin-left:auto;font-family:var(--font-mono);font-size:10px;color:var(--text-3);white-space:nowrap}.inbox-thread-snippet{font-size:12px;color:var(--text-3);overflow:hidden;text-overflow:ellipsis;white-space:nowrap;margin-top:3px}.inbox-thread-unread{display:inline-flex;min-width:18px;height:18px;align-items:center;justify-content:center;font-family:var(--font-mono);font-size:10px;font-weight:700;background:var(--accent);color:#fff;border-radius:999px;padding:0 5px}.chip-hh{font-family:var(--font-mono);font-size:9px;padding:2px 6px;border-radius:3px;background:var(--surface-active);color:var(--accent);letter-spacing:.08em;text-transform:uppercase;border:1px solid var(--accent-soft)}.inbox-detail{background:var(--surface);border:1px solid var(--border);border-radius:var(--radius-xl);display:grid;grid-template-rows:auto 1fr auto;overflow:hidden}.inbox-detail.is-empty{grid-template-rows:1fr;place-items:center}.inbox-detail-head{display:flex;align-items:center;gap:12px;padding:14px 18px;border-bottom:1px solid var(--border)}.inbox-detail-av{width:38px;height:38px;border-radius:999px;background:var(--surface-dark);color:var(--text-on-dark);font-size:13px;font-weight:700;display:inline-flex;align-items:center;justify-content:center}.inbox-detail-name{font-size:14px;font-weight:600}.inbox-detail-sub{font-size:12px;color:var(--text-3)}.inbox-detail-actions{margin-left:auto}.inbox-messages{padding:20px 22px;display:flex;flex-direction:column;gap:14px;overflow-y:auto;background:var(--canvas)}.msg{max-width:78%;padding:9px 13px;border-radius:10px;font-size:13px;line-height:1.5}.msg-meta{font-family:var(--font-mono);font-size:9px;letter-spacing:.1em;text-transform:uppercase;color:var(--text-3);margin-bottom:4px}.msg-lead{align-self:flex-start;background:var(--surface);border:1px solid var(--border);box-shadow:var(--shadow-sm)}.msg-agent{align-self:flex-end;background:var(--surface-dark);color:var(--text-on-dark)}.msg-agent .msg-meta{color:var(--accent-soft)}.msg-human{align-self:flex-end;background:var(--surface);border:1px solid var(--accent)}.msg-human .msg-meta{color:var(--accent)}.inbox-composer{padding:13px 15px;border-top:1px solid var(--border);background:var(--surface-2);display:flex;flex-direction:column;gap:9px}.composer-row{display:flex;gap:8px;align-items:center;background:var(--surface);border:1px solid var(--border-strong);border-radius:var(--radius-md);padding:9px 12px}.composer-row input{flex:1 1;border:0;outline:0;font-family:inherit;font-size:13px;color:var(--text);background:transparent}.composer-row .send{padding:6px 14px;border-radius:var(--radius-sm);border:0;background:var(--accent);color:#fff;font-weight:700;font-size:12px;cursor:pointer}.composer-row.is-disabled{background:var(--surface-sunken);border-style:dashed}.composer-row.is-disabled input{color:var(--text-4)}.composer-row.is-disabled .send{background:var(--n-300);color:var(--n-50);cursor:not-allowed}.composer-note{gap:7px;font-size:12px;color:var(--text-3)}.composer-note,.inbox-empty{display:flex;align-items:center}.inbox-empty{flex-direction:column;justify-content:center;gap:14px;height:100%;text-align:center;padding:24px}.empty-badge{width:64px;height:64px;border-radius:16px;background:var(--surface-active);color:var(--accent);display:grid;place-items:center}.empty-badge svg{width:30px;height:30px}.empty-title{font-size:16px;font-weight:600;color:var(--text)}.empty-sub{font-size:13px;color:var(--text-3);max-width:300px;line-height:1.5;margin:0}.empty-hint{font-family:var(--font-mono);font-size:10px;letter-spacing:.12em;text-transform:uppercase;color:var(--text-4);margin-top:4px}.hh-toggle{display:inline-flex;align-items:center;gap:9px;cursor:pointer;font-size:12px;font-weight:600;color:var(--text-2);-webkit-user-select:none;-moz-user-select:none;user-select:none;background:transparent;border:0;font-family:inherit}.hh-toggle .hh-switch{width:38px;height:22px;border-radius:999px;background:var(--n-300);position:relative;transition:background .18s;flex-shrink:0}.hh-toggle .hh-knob{position:absolute;top:2px;left:2px;width:18px;height:18px;border-radius:999px;background:#fff;box-shadow:var(--shadow-sm);transition:left .18s}.hh-toggle.is-on .hh-switch{background:var(--accent)}.hh-toggle.is-on .hh-knob{left:18px}.hh-toggle.is-on{color:var(--accent)}.hh-toggle:disabled{opacity:.6;cursor:default}.composer-blocked{display:flex;align-items:center;gap:8px;background:var(--warning-bg);border:1px solid var(--warning);color:var(--warning);border-radius:var(--radius-md);padding:10px 12px;font-size:12px}.msg-tick{color:var(--accent);font-weight:600}.msg-agent .msg-tick{color:var(--accent-soft)}.inbox-thread.is-unread .inbox-thread-name{font-weight:700}.inbox-thread.is-unread .inbox-thread-snippet{color:var(--text-2);font-weight:500}