:root{--ink:#172b33;--muted:#6a7c84;--line:#dce7e5;--soft:#f3f8f7;--teal:#0d766e;--teal-dark:#075b55;--mint:#dff3ee;--amber:#b36b00;--danger:#b9363e;--sidebar:250px}*{box-sizing:border-box}body{margin:0;background:#f5f8f7;color:var(--ink);font-family:Inter,Segoe UI,system-ui,-apple-system,sans-serif}.app-shell{min-height:100vh}.app-sidebar{position:fixed;inset:0 auto 0 0;width:var(--sidebar);background:#0c2f32;color:#dff3ef;display:flex;flex-direction:column;z-index:1040;box-shadow:8px 0 30px rgba(7,45,48,.12)}.brand{display:flex;align-items:center;gap:12px;color:#fff;text-decoration:none;padding:22px 20px;border-bottom:1px solid rgba(255,255,255,.1)}.brand:hover{color:#fff}.brand-mark{display:grid;place-items:center;width:38px;height:38px;border-radius:10px;background:#26a69a;color:#fff;font-size:24px;font-weight:800}.brand strong,.brand small{display:block}.brand strong{line-height:1.2}.brand small{color:#96bcb8;font-size:.72rem;margin-top:3px}.sidebar-nav{padding:18px 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rgba(13,118,110,.12)}.form-hint{font-size:.74rem;color:var(--muted);margin-top:4px}.badge{font-weight:650}.badge-expired{background:#fbe6e7;color:#9d1f29}.badge-near{background:#fff0cd;color:#8a5800}.badge-good{background:#e2f4eb;color:#197047}.empty-state{text-align:center;padding:35px 18px;color:var(--muted);border:1px dashed #bfd0cd;border-radius:10px;background:#fbfdfd}.invoice-summary{margin-left:auto;max-width:430px;background:var(--soft);border:1px solid var(--line);padding:15px;border-radius:10px}.summary-row{display:flex;justify-content:space-between;gap:20px;padding:4px 0}.summary-row.grand{border-top:1px solid var(--line);margin-top:7px;padding-top:10px;font-size:1.1rem;font-weight:750}.section-title{font-size:1rem;font-weight:750;margin:0}.filter-bar{background:#fff;border:1px solid var(--line);border-radius:11px;padding:14px;margin-bottom:16px}.cart-editor{background:var(--soft);border:1px solid 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