:root{--color-bg:#fafafa;--color-bg-alt:#f2f2f2;--color-surface:#fff;--color-text:#1a1a1a;--color-text-muted:#6b6b6b;--color-accent:#c41230;--color-accent-dark:#8b0f24;--color-border:#e5e5e5;--font-heading:Georgia,"Times New Roman",serif;--font-body:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Arial,sans-serif}*{box-sizing:border-box}body{margin:0;background:var(--color-bg);color:var(--color-text);font-family:var(--font-body);line-height:1.5}h1,h2,h3{font-family:var(--font-heading);font-weight:600;margin:0 0 .4em}.login-wrap{min-height:100vh;display:flex;align-items:center;justify-content:center;padding:24px}.login-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:48px 40px;max-width:380px;width:100%;text-align:center;box-shadow:0 8px 30px rgba(0,0,0,.04)}.login-card h1{font-family:var(--font-body);font-weight:700;font-size:1.3rem;text-transform:uppercase;letter-spacing:.03em;margin-bottom:12px}.login-card p{color:var(--color-text-muted);margin-bottom:28px}.btn-google{display:inline-flex;align-items:center;gap:10px;justify-content:center;width:100%;padding:12px 20px;background:var(--color-accent);color:#fff;border:none;border-radius:6px;font-size:1rem;cursor:pointer;transition:background .15s ease}.btn-google:hover{background:var(--color-accent-dark)}.dashboard{min-height:100vh}.topbar{display:flex;align-items:center;justify-content:space-between;padding:18px 32px;background:var(--color-surface);border-bottom:1px solid var(--color-border)}.brand{font-family:var(--font-body);font-weight:700;font-size:1.15rem;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text)}.brand span{color:var(--color-accent)}.user-info{display:flex;align-items:center;gap:16px;font-size:.9rem;color:var(--color-text-muted)}.btn-signout{padding:8px 16px;background:transparent;border:1px solid var(--color-border);border-radius:6px;color:var(--color-text);cursor:pointer;font-size:.85rem}.btn-signout:hover{background:var(--color-bg-alt)}.content{max-width:1100px;margin:0 auto;padding:40px 32px}.stat-grid{display:grid;grid-template-columns:repeat(3,1fr);grid-gap:24px;gap:24px;margin-bottom:40px}.stat-card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:24px;display:flex;flex-direction:column;gap:6px}.stat-label{font-size:.8rem;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted)}.stat-value{font-size:1.9rem;font-weight:600}.stat-sub{font-size:.8rem;color:var(--color-text-muted)}.panel{background:var(--color-surface);border:1px solid var(--color-border);border-radius:8px;padding:28px}.placeholder-note{color:var(--color-text-muted);font-size:.95rem}.main-nav-links{display:flex;gap:28px}.main-nav-links a{color:var(--color-text-muted);text-decoration:none;font-size:.9rem;font-weight:500;padding-bottom:4px;border-bottom:2px solid transparent}.main-nav-links a:hover{color:var(--color-text)}.main-nav-links a.active{color:var(--color-text);border-bottom-color:var(--color-accent)}.page-header{display:flex;align-items:center;justify-content:space-between;margin-bottom:24px}.page-header h2{margin:0}.btn{display:inline-block;padding:10px 20px;border-radius:6px;font-size:.9rem;border:1px solid transparent;cursor:pointer;text-decoration:none}.btn-primary{background:var(--color-accent);color:#fff}.btn-primary:hover{background:var(--color-accent-dark)}.btn-primary:disabled{opacity:.6;cursor:default}.link-btn{background:none;border:none;color:var(--color-accent);cursor:pointer;font-size:.85rem;padding:0;margin-right:14px}.link-btn:hover{text-decoration:underline}.link-btn-danger{color:#8b8b8b}.link-btn-danger:hover{color:#c41230}.link-btn-sent{color:#4a5d45}.link-btn-sent:hover{color:#33421f}.row-actions{white-space:nowrap}.table{width:100%;border-collapse:collapse;font-size:.92rem}.table th{text-align:left;font-size:.75rem;text-transform:uppercase;letter-spacing:.04em;color:var(--color-text-muted);padding:10px 8px}.table td,.table th{border-bottom:1px solid var(--color-border)}.table td{padding:12px 8px}.table tr:last-child td{border-bottom:none}.badge{display:inline-block;padding:3px 10px;border-radius:100px;font-size:.75rem;text-transform:capitalize;font-weight:500}.badge-draft{background:#f2f2f2;color:#6b6b6b}.badge-sent{background:#fdf0d5;color:#9a6b16}.badge-paid{background:#e7f0e5;color:#4a5d45}.badge-overdue{background:#fbe4e4;color:#c41230}.form{display:flex;flex-direction:column;gap:16px}.form-row{display:grid;grid-template-columns:1fr 1fr;grid-gap:16px;gap:16px}.form-group{display:flex;flex-direction:column;gap:6px}.form-group label{font-size:.85rem;color:var(--color-text-muted)}.form-group input,.form-group textarea{padding:10px 12px;border:1px solid var(--color-border);border-radius:6px;font-size:.95rem;font-family:var(--font-body);background:#fff;color:var(--color-text)}.form-group textarea{min-height:80px;resize:vertical}.client-picker{position:relative}.client-picker-list{position:absolute;z-index:20;top:100%;left:0;right:0;margin:4px 0 0;padding:4px 0;list-style:none;background:#fff;border:1px solid var(--color-border);border-radius:6px;box-shadow:0 8px 20px rgba(0,0,0,.08);max-height:220px;overflow-y:auto}.client-picker-list li{padding:8px 12px;cursor:pointer;display:flex;justify-content:space-between;gap:12px;font-size:.9rem}.client-picker-list li:hover{background:var(--color-bg-alt)}.client-picker-name{color:var(--color-text)}.client-picker-email{color:var(--color-text-muted);font-size:.8rem}@media (max-width:720px){.stat-grid{grid-template-columns:1fr}.topbar{flex-direction:column;gap:12px;align-items:flex-start}.main-nav-links{flex-wrap:wrap;gap:16px}.form-row{grid-template-columns:1fr}.table{display:block;overflow-x:auto}}