:root{--bg:#f8fafc;--panel:#ffffff;--border:#e2e8f0;--text:#0f172a;--muted:#64748b;--primary:#0f172a;--primary-text:#ffffff;--accent:#2563eb;--danger:#dc2626;--success:#16a34a}*{box-sizing:border-box}body,html{margin:0;padding:0}body{font-family:-apple-system,BlinkMacSystemFont,Segoe UI,Roboto,Helvetica,Arial,sans-serif;background:var(--bg);color:var(--text);font-size:14px;line-height:1.5}a{color:var(--accent)}.container{max-width:1100px;margin:0 auto;padding:24px}.nav{display:flex;gap:16px;align-items:center;padding:12px 24px;background:var(--panel);border-bottom:1px solid var(--border)}.nav a{color:var(--text);text-decoration:none;font-weight:500;padding:6px 10px;border-radius:6px}.nav a:hover{background:var(--bg)}.nav .brand{font-weight:700;margin-right:auto}.card{background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:20px;margin-bottom:16px}h1{font-size:22px;margin:0 0 16px}h2{font-size:18px;margin:0 0 12px}.btn{display:inline-block;padding:8px 14px;border-radius:8px;border:1px solid var(--border);background:#fff;color:var(--text);cursor:pointer;font-size:14px;font-weight:500}.btn:hover{background:var(--bg)}.btn-primary{background:var(--primary);color:var(--primary-text);border-color:var(--primary)}.btn-primary:hover{background:#1e293b}.btn-danger{background:var(--danger);color:#fff;border-color:var(--danger)}.btn[disabled]{opacity:.5;cursor:not-allowed}input,select,textarea{width:100%;padding:9px 12px;border:1px solid var(--border);border-radius:8px;font:inherit;background:#fff;color:var(--text)}textarea{font-family:ui-monospace,SFMono-Regular,Menlo,monospace}label{display:block;font-weight:500;margin:12px 0 6px}table{width:100%;border-collapse:collapse}td,th{padding:10px 8px;text-align:left;border-bottom:1px solid var(--border);font-size:13px}th{color:var(--muted)}.pill,th{font-weight:600}.pill{display:inline-block;padding:2px 8px;border-radius:999px;font-size:11px;text-transform:uppercase;letter-spacing:.04em}.pill-draft{background:#f1f5f9;color:#475569}.pill-sending{background:#fef3c7;color:#92400e}.pill-sent{background:#dcfce7;color:#166534}.row{display:flex;gap:12px;flex-wrap:wrap}.row>*{flex:1 1;min-width:200px}.muted{color:var(--muted);font-size:13px}.stat{display:flex;flex-direction:column;gap:4px;background:var(--panel);border:1px solid var(--border);border-radius:10px;padding:16px;min-width:140px}.stat .num{font-size:24px;font-weight:700}.stat .lbl{font-size:12px;color:var(--muted);text-transform:uppercase;letter-spacing:.04em}