:root{--color-bg:#f4f6f8;--color-surface:#ffffff;--color-border:#dde3e8;--color-text:#1a2733;--color-text-muted:#5b6b7a;--color-primary:#0a6e6e;--color-primary-dark:#085555;--color-primary-contrast:#ffffff;--color-danger:#b3261e;--color-danger-bg:#fdecea;--color-warning:#a15c00;--color-warning-bg:#fff4e0;--color-success:#1e7d32;--color-success-bg:#e8f5e9;--radius:10px;--shadow:0 1px 3px rgba(20,30,40,0.08),0 1px 2px rgba(20,30,40,0.06);--font-sans:-apple-system,BlinkMacSystemFont,"Segoe UI",Roboto,Helvetica,Arial,sans-serif}*{box-sizing:border-box;-webkit-tap-highlight-color:transparent}body,html{padding:0;margin:0;overscroll-behavior-y:contain}body{background:var(--color-bg);color:var(--color-text);font-family:var(--font-sans);font-size:16px;line-height:1.5;padding-top:env(safe-area-inset-top);padding-bottom:env(safe-area-inset-bottom);min-height:100vh;min-height:100dvh}a{color:var(--color-primary)}.page-loading{display:flex;min-height:100vh;min-height:100dvh;color:var(--color-text-muted)}.btn,.page-loading{align-items:center;justify-content:center}.btn{display:inline-flex;gap:6px;border:1px solid transparent;border-radius:8px;padding:10px 16px;font-size:16px;font-weight:600;cursor:pointer;background:var(--color-primary);color:var(--color-primary-contrast);transition:background .15s ease;min-height:44px}.btn:active{background:var(--color-primary-dark)}.btn:disabled{opacity:.55;cursor:not-allowed}.btn-secondary{background:var(--color-surface);color:var(--color-text);border-color:var(--color-border)}.btn-secondary:active{background:var(--color-bg)}.btn-danger{background:var(--color-danger)}.btn-lg{padding:18px 20px;font-size:19px;border-radius:12px;min-height:56px}.btn-block,.btn-lg{width:100%}label{display:block;font-size:13px;font-weight:600;color:var(--color-text-muted);margin-bottom:6px}input,select,textarea{width:100%;font-family:inherit;font-size:16px;padding:12px 14px;border:1px solid var(--color-border);border-radius:8px;background:var(--color-surface);color:var(--color-text);min-height:48px}input:focus,select:focus,textarea:focus{outline:2px solid var(--color-primary);outline-offset:-1px}.field{margin-bottom:14px}.form-error{background:var(--color-danger-bg);color:var(--color-danger)}.form-error,.form-success{border-radius:8px;padding:10px 12px;font-size:14px;margin-bottom:14px}.form-success{background:var(--color-success-bg);color:var(--color-success)}.card{background:var(--color-surface);border:1px solid var(--color-border);border-radius:var(--radius);box-shadow:var(--shadow);padding:20px}h1{font-size:21px;margin:0 0 4px}.page-subtitle{color:var(--color-text-muted);margin:0 0 20px;font-size:14px}.badge{display:inline-block;padding:3px 10px;border-radius:999px;font-size:12px;font-weight:700;text-transform:uppercase;letter-spacing:.02em}.badge-pending{background:var(--color-warning-bg);color:var(--color-warning)}.badge-approved{background:var(--color-success-bg);color:var(--color-success)}.badge-rejected{background:var(--color-danger-bg);color:var(--color-danger)}.login-shell{min-height:100vh;min-height:100dvh;display:flex;align-items:center;justify-content:center;padding:20px}.login-card{width:100%;max-width:380px}.login-card h1{margin-bottom:4px}.login-card .page-subtitle,.login-card h1{text-align:center}.delivery-shell{max-width:480px;margin:0 auto;min-height:100vh;min-height:100dvh;flex-direction:column}.delivery-header,.delivery-shell{background:var(--color-surface);display:flex}.delivery-header{padding:calc(14px + env(safe-area-inset-top)) 18px 14px;border-bottom:1px solid var(--color-border);align-items:center;justify-content:space-between;position:sticky;top:0;z-index:10}.delivery-body{padding:18px 18px calc(24px + env(safe-area-inset-bottom));flex:1 1}.customer-card{border:1px solid var(--color-border);border-radius:var(--radius);padding:16px;margin-bottom:16px}.customer-card .customer-code{font-size:13px;font-weight:700;color:var(--color-primary-dark);letter-spacing:.03em}.customer-card .customer-name{font-size:21px;font-weight:700;margin:2px 0 8px}.customer-card .customer-meta{font-size:15px;color:var(--color-text-muted);margin:2px 0}.coupon-status-grid{display:grid;grid-template-columns:repeat(3,1fr);gap:10px;margin-top:12px}.coupon-status-grid .item{text-align:center;background:var(--color-bg);border-radius:8px;padding:12px 4px}.coupon-status-grid .item .n{font-size:22px;font-weight:800}.coupon-status-grid .item .l{font-size:11px;color:var(--color-text-muted);text-transform:uppercase}.qr-scan-box{border:2px dashed var(--color-border);border-radius:var(--radius);overflow:hidden;margin-bottom:16px}.helper-text{font-size:13px;margin-top:4px}.empty-state,.helper-text{color:var(--color-text-muted)}.empty-state{text-align:center;padding:40px 20px}